Sunscreen Layers Drive 80% of Skincare Pilling, Clinical Study Shows

Dr Dray

Rubbing sunscreen over moisturizers disrupts protective UV film formation and causes most pilling, requiring users to eliminate underlying layers and press formulas into skin.

AI-assisted summary of Why Your Skincare Is Pilling (And How to Stop It) — original source. Check the original for full context.

Source published: 2026-08-18

Key ideas

A clinical study revealed that sunscreen is the primary driver of skincare pilling, accounting for approximately 80% of observed pilling occurrences when layered over base products. (3:00)
Pilling is heavily influenced by individual skin biology, occurring significantly more often on skin characterized by lower hydration, lower sebum levels, higher pH, and smoother measured texture. (4:50)
Physical application technique directly impacts film stability: linear back-and-forth rubbing generated the highest rate of pilling, whereas patting or pressing minimized product shearing. (7:23)
Unexpectedly, applying foundation over sunscreen reduced or resolved existing pilling events, likely due to added hydration and film-forming agents binding the underlying layers. (11:31)

Detailed notes

## Background Published on YouTube by board-certified dermatologist Dr. Dray on August 18, 2026, this video examines why skincare products ball up or flake on the face and how to prevent it. Drawing on a clinical study, the presentation reviews the role of individual skin biology, product layering, application mechanics, and the reasons why sunscreen is the most frequent culprit behind pilling.

## TL;DR Dr. Dray breaks down clinical research investigating why skincare products pill, revealing that sunscreen applied over existing layers accounts for roughly 80% of observed pilling events. The research demonstrates that individual skin parameters—such as lower hydration, reduced sebum production, and higher pH—predispose skin to pilling just as much as formulation incompatibility. Furthermore, friction from linear and circular rubbing significantly shears setting films compared to gentle patting or pressing motions. While pilling may not necessarily negate the absorption of standard active serums, it severely compromises the uniform barrier required for sun protection. To resolve the issue, she advises simplifying morning routines, applying sunscreen directly to bare skin if necessary, and refining application technique rather than skipping sunscreen.

## Atmosphere & style The presentation carries Dr. Dray's signature evidence-based, clinical, and approachable demeanor, cutting through internet skincare myths with scientific pragmatism. The narrative moves logically from personal annoyance to scientific breakdown and actionable advice, punctuated by dry humor as she addresses audience fears about product reviews. It feels like an educational, demystifying consultation that replaces the guesswork of complex beauty routines with practical dermatological common sense.

## Bulletin - [03:00](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=180s) A clinical study revealed that sunscreen is the primary driver of skincare pilling, accounting for approximately 80% of observed pilling occurrences when layered over base products. - [04:50](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=290s) Pilling is heavily influenced by individual skin biology, occurring significantly more often on skin characterized by lower hydration, lower sebum levels, higher pH, and smoother measured texture. - [07:23](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=443s) Physical application technique directly impacts film stability: linear back-and-forth rubbing generated the highest rate of pilling, whereas patting or pressing minimized product shearing. - [11:31](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=691s) Unexpectedly, applying foundation over sunscreen reduced or resolved existing pilling events, likely due to added hydration and film-forming agents binding the underlying layers.

## Key takeaways - [00:56](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=56s) Skincare pilling occurs when cosmetic formulations ball up or flake across the skin's surface rather than setting into a cohesive film. - [02:03](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=123s) A clinical study evaluating 528 women with a history of pilling found that approximately 41% experienced pilling during standardized multi-step application testing. - [03:00](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=180s) Sunscreen was identified as the greatest culprit behind pilling because its polymers and film-forming agents must establish an unbroken surface layer that is easily disrupted. - [04:50](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=290s) Product pilling is not merely a cosmetic formulation defect, but a dynamic interaction involving the user's specific skin hydration, oiliness, pH, and texture. - [06:07](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=367s) Adding extra hydrating serums or heavy moisturizers under sunscreen to counter dry skin often backfires, creating excessive slip and worsening pilling. - [06:07](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=367s) There are no universally incompatible ingredient pairings; product interactions vary significantly depending on vehicle types, emulsion bases, and skin traits. - [07:23](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=443s) Linear back-and-forth rubbing causes the most friction and pilling, functioning like an eraser that shears setting films off the skin. - [07:23](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=443s) Mineral sunscreens containing zinc oxide or titanium dioxide tend to pill more frequently than chemical filters because they require more mechanical pressure to spread. - [09:07](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=547s) Rigid wait times between routine steps lack clinical evidence, but letting viscous or wet layers settle before applying sunscreen helps prevent physical disruption. - [10:18](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=618s) While active skincare serums that pill may still partially absorb, sunscreen pilling directly compromises the uniform barrier required for reliable UV protection. - [11:31](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=691s) Layering foundation over sunscreen significantly decreased pilling episodes in clinical testing, counter to the belief that makeup inherently disrupts sunscreen films. - [12:59](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=779s) The same skincare product can perform seamlessly on one individual and pill heavily on another due to variations in epidermal barrier biology and surface oils. - [13:34](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=814s) Simplifying the morning routine by applying sunscreen directly to a clean face can resolve pilling, as modern sunscreens already contain moisturizing vehicle bases. - [13:34](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=814s) While cutting down the amount of serum or cream applied reduces pilling, sunscreen volume must never be decreased below the recommended amount needed to reach labeled SPF. - [13:34](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=814s) Pilling should never prompt skipping sunscreen entirely; instead, consumers should adjust application technique or remove underlying skincare steps.

## Detailed walkthrough ### [00:00](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=0s) What Is Skincare Pilling?

Board-certified dermatologist Dr. Dray introduces the frustrating and common issue of skincare pilling: that annoying moment when applying a serum or moisturizer, following it with sunscreen, and getting ready for foundation, only to find small balls or flakes rolling up across the skin. People often worry that their expensive products are simply wiping away, failing to absorb, or becoming completely ineffective, wondering what causes it and how to prevent it.

Dr. Dray explains that pilling occurs when a skincare or cosmetic formula balls up or flakes on the skin's surface, behaving "sort of like well the pills of lint or material that form on an old sweater." While there is surprisingly little scientific literature on pilling due to the overwhelming variety of cosmetics, constantly changing formulations, and diverse skin types, she highlights an illuminating new study that specifically investigated product incompatibility, individual skin traits, and application techniques.

[02:03](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=123s) The Study Breakdown

Dr. Dray walks through the clinical setup of the newly published study, which recruited 528 female participants in China aged 20 to 49 with Fitzpatrick skin phototypes II through IV. A key inclusion criterion was that all participants self-identified as having previously experienced skincare pilling, meaning researchers deliberately evaluated an affected cohort rather than individuals who had never had the problem. Overall, roughly 41% of participants experienced pilling during the testing.

The investigators established a thorough baseline by evaluating physiological skin parameters before testing: - Skin hydration - Skin oiliness and sebum production - Skin surface pH - Skin texture - Transepidermal water loss (TEWL) - Desquamation (the medical term for skin flaking or shedding)

Participants then systematically applied layered skincare routines—beginning with various product bases, followed by sunscreen, and concluding with foundation—while researchers monitored each step for pilling events and categorized the participants' physical application techniques.

```mermaid flowchart TD accTitle: Skincare Pilling Study Protocol accDescr: Sequence of physiological testing and tiered product application evaluated in the research study.

subgraph Baseline ["Baseline Measurements"] A["Assess Skin Characteristics<br/>(Hydration, Sebum, pH, Texture, TEWL, Desquamation)"] end

subgraph Testing ["Layering & Application Tracking"] B["Step 1: Base Skincare Products<br/>(Serums / Moisturizers)"] C["Step 2: Sunscreen Application<br/>(Track Application Method & Pilling)"] D["Step 3: Foundation Application<br/>(Track Pilling Events)"] end

A --> B B --> C C --> D ```

[03:00](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=180s) Sunscreen Was the Biggest Culprit

The study’s standout finding was that sunscreen was the absolute greatest driver of skincare pilling. Researchers documented hundreds of pilling events during sunscreen application alone. In stark contrast, foundation layered over skincare produced substantially fewer issues: approximately 80% of all observed pilling occurrences took place when sunscreen was smoothed over another skincare base.

Dr. Dray clarifies that this does not mean sunscreen is defective or that people should stop wearing it, emphasizing that sunscreen remains one of the most critical steps in any skincare routine. Rather, sunscreens are uniquely formulated to build a uniform, protective film across the skin to block ultraviolet radiation. When additional products and mechanical friction disrupt this film, the formula easily balls up. Sunscreen ingredients—such as mineral particles, polymers, and film-forming agents—heavily influence dry-down behavior. The researchers observed that inorganic filters like zinc oxide and titanium dioxide may clash with underlying water-based formulas. However, the study did not pinpoint any single "villain" ingredient guaranteed to pill on every user, though Dr. Dray notes this aligns with her personal experience of encountering more pilling with mineral sunscreens than with chemical filters.

[04:50](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=290s) The Role of Skin Characteristics

A crucial insight from the research is that skincare pilling is not purely a product formulation defect; the recipient's underlying skin biology plays an enormous role. Because skin is an active, dynamic surface rather than an inert canvas, individual variations in lipid content, hydration, pH, and cell turnover heavily dictate whether products adhere or pill.

According to the study, participants who experienced product pilling consistently presented with distinct baseline skin qualities: - Lower skin hydration levels - Lower sebum (oil) production - Higher skin pH - Smoother measured skin texture

Dr. Dray cautions viewers against oversimplifying these findings into absolute rules: dry skin does not guarantee pilling, nor does oily skin make someone completely immune. Nevertheless, it demonstrates why a sunscreen that works flawlessly during one of Dr. Dray's product reviews might still pill on someone else's skin.

[06:07](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=367s) Layering Fallacies: Dry Skin and Product Pairing

A common reaction among people with dry skin is to pile on extra moisturizers or rich serums beneath sunscreen to offset dryness, assuming that extra moisture will stop the flaking. Dr. Dray warns that adding more layers often backfires, creating a "perfect storm" for severe pilling.

The study tested multiple types of skincare bases under sunscreens and discovered that no single base was universally responsible for sunscreen pilling. The notion that "product A plus product B equals pilling" is an oversimplification. The real interaction depends on a complex interplay of polymer types, emulsifiers, oils, water volume, mineral concentrations, dry times, and individual skin traits. Consequently blanket claims online declaring that you should "never use this serum under that sunscreen" fail to account for how differently identical pairings perform across different individuals.

[07:23](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=443s) How You Apply Your Products Matters

Beyond products and skin chemistry, the physical technique used to apply formulas plays a massive role in pilling. Researchers categorized four primary application motions: - Patting - Pressing - Circular rubbing - Linear (back-and-forth) rubbing

The highest frequency of pilling occurred with rubbing, particularly back-and-forth linear rubbing. Dr. Dray likens this friction to rubbing an eraser over paper until rubber shavings roll up—once a formula begins setting into a film, friction shears it off the surface.

She recommends abandoning vigorous rubbing or facial massage in favor of gently distributing the product and lightly patting or pressing it in with the finger pads. She also points out that mineral sunscreens with zinc oxide or titanium dioxide naturally require far more effort and pressure to spread smoothly than fluid chemical filters, which may explain why mineral sunscreens are so frequently implicated in pilling.

[08:53](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=533s) Waiting Between Layers

Dr. Dray turns to one of the most widely debated pieces of skincare advice: whether consumers need to wait a specific number of minutes between layers before applying their next product.

[09:07](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=547s) Waiting Between Products and Application Dynamics

Dr. Dray addresses the common internet advice instructing people to wait exactly 30 seconds after applying moisturizer before putting on sunscreen, exclaiming, "Oh my gosh, where are they coming up with these?" While giving skincare products time to settle makes theoretical sense to reduce pilling, the study she reviewed did not establish any specific waiting period as an evidence-based preventative measure. What can be reasonably deduced, however, is that both the number of product layers and how wet the skin remains between those layers strongly influence the likelihood of pilling.

To illustrate, she contrasts two distinct layering routines. In one scenario, someone applies a thick, viscous, slippery, water-based hydrating serum, immediately follows it with a mineral sunscreen, and rubs vigorously back and forth; this combination is a prime recipe for pilling. In the contrasting scenario, someone applies a thin, water-based liquid that is not overly viscous, quickly pats it into the skin, and then carefully applies a chemical sunscreen with gentle, precise technique. These differing product textures, moisture levels, and application approaches collectively explain why one method balls up while the other applies seamlessly.

[10:18](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=618s) Does Pilling Mean Your Products Aren't Working?

When products start balling up, people naturally wonder whether their skincare is completely failing to penetrate or if their sunscreen is useless. For non-sunscreen active products, pilling does not automatically mean that the beneficial ingredient failed to absorb into the skin; it simply leaves the exact degree of penetration unknown. The study itself did not test or measure product performance, ingredient delivery, or overall UV protection values under pilling conditions.

However, when it comes to sunscreen, Dr. Dray firmly warns that pilling should be assumed to degrade efficacy. Sunscreen must form an unbroken, uniform protective film across the skin to shield against UV radiation. If vigorous rubbing produces visible little balls, that material is either sunscreen rolling right off the skin or sunscreen that never adhered in the first place. The result is an uneven, patchy layer that cannot deliver the advertised protection.

```mermaid flowchart TD accTitle: Impact of Pilling on Skincare vs Sunscreen accDescr: Flowchart contrasting how product pilling affects standard non-sunscreen skincare penetration versus sunscreen film integrity and UV protection.

subgraph StandardSkincare["Non-Sunscreen Products"] A["Active Serum / Moisturizer Pills"] --> B["Active ingredients may still absorb partially"] B --> C["Performance impact is unquantified but possible"] end

subgraph SunscreenLayer["Sunscreen Application"] D["Sunscreen Balls Up / Pills"] --> E["Protective film disrupted into patches"] E --> F["Compromised, uneven UV protection"] end ```

[11:31](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=691s) The Surprising Effect of Foundation on Sunscreen Pilling

A frequent question Dr. Dray receives is how to apply makeup over sunscreen without disrupting the sun protection layer. Conventional wisdom suggests that piling foundation over an already vulnerable sunscreen would pull up the product and worsen pilling. Surprisingly, the study found the exact opposite: applying foundation over sunscreen actually reduced the total number of pilling events. Out of hundreds of observed sunscreen pilling episodes, the vast majority decreased or resolved entirely once foundation was smoothed over the top.

Dr. Dray cautions viewers not to treat this as an ironclad excuse to slap foundation over every bad sunscreen application, noting that the researchers themselves could only speculate on why this happened. Potential explanations include: - Film-forming ingredients in the foundation may create a secondary barrier that helps bind and anchor the sunscreen layer down. - Added hydration from the foundation formula might help the underlying sunscreen adhere better to the stratum corneum. - Foundation ingredients may interact chemically or physically with the layers underneath to smooth out the overall film.

[12:59](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=779s) Why the Same Product Pills for One Person but Not Another

Viewers often confront Dr. Dray after buying a product she reviewed favorably, frustrated because it pilled on their face: "Dr. Dray reviewed this skincare product and claimed it caused no pilling... Is she a liar?" She jokingly reassures the audience, "I'm not," but explains that product reviews must be taken with a grain of salt because individual skin biology varies drastically.

Personal physiological factors alter how formulas behave: - Variations in sebum production (oiliness vs. dryness) - Baseline skin hydration levels - Individual skin surface pH - Texture and epidermal barrier differences

A product that settles perfectly on one person's face can easily ball up on someone with different surface chemistry and moisture levels.

[13:34](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=814s) Practical Dermatology Tips to Eliminate Skincare Pilling

To proactively minimize pilling, Dr. Dray lays out actionable adjustments to routine design and physical application:

1. **Keep the routine simple:** Strip down excessive steps instead of applying seven separate layers beneath sunscreen. If pilling is persistent, try applying sunscreen directly to a clean, bare, dry face. Sunscreens are already formulated in moisturizing lotion, cream, or hydrating gel bases that curb transepidermal water loss; many are functionally moisturizers with UV filters. Serums are fine if they work, but they are unnecessary if they trigger product friction. 2. **Use less product—except for sunscreen:** While dispensing smaller amounts of toners, serums, and creams stops excess product from balling up on the surface, this rule must never be applied to sunscreen. People frequently under-apply SPF, which causes sun protection to fail. A generous layer is mandatory to achieve the labeled SPF rating. 3. **Allow products to settle using common sense:** While there is no universal waiting window, local climate dictates dry time. In humid environments, products take much longer to dry down naturally without heat or airflow, requiring more patience before the next layer. 4. **Modify application technique:** Ditch aggressive back-and-forth circular rubbing. Instead, gently spread products in a single direction, pat them into the surface, or press them down with the palms. 5. **Pinpoint product combinations:** Pilling is frequently an issue of chemical incompatibility between specific formulations rather than a single bad product. 6. **Never abandon sunscreen:** If an SPF formula pills, modify or remove the serums and moisturizers underneath first, or refine the application technique, before discarding a sunscreen you otherwise enjoy.

[16:02](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=962s) Study Limitations and Final Takeaway

Dr. Dray highlights several key caveats about the research. The study evaluated a cohort of women aged 20 to 49 from China who had a documented history of experiencing skincare pilling. Because the participants were preselected for having pilling-prone routines or skin, the findings cannot be assumed to apply universally across all demographics, skin types, or cosmetic formulations. Furthermore, the researchers did not isolate single, specific ingredients responsible for causing pilling.

Despite these limitations, the roughly two-year-old paper represents an important early step in understanding the science of pilling. Dr. Dray emphasizes that more research is needed to evaluate different ethnic populations, formula textures, and specific wait-time variables. She closes by reminding viewers that skincare pilling is extremely common and frustrating, encouraging them to share which product combinations tend to ball up on their skin, and signs off with her signature farewell: "don't forget sunscreen and subscribe."

## Notable quotes > [00:00](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=0s) sort of like well the pills of lint or material that form on an old sweater. — Dr. Dray

> [06:07](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=367s) perfect storm — Dr. Dray

> [06:07](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=367s) product A plus product B equals pilling — Dr. Dray

> [06:07](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=367s) never use this serum under that sunscreen — Dr. Dray

> [09:07](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=547s) Oh my gosh, where are they coming up with these? — Dr. Dray

> [12:59](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=779s) Dr. Dray reviewed this skincare product and claimed it caused no pilling... Is she a liar? — Dr. Dray

> [12:59](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=779s) I'm not — Dr. Dray

> [16:02](https://www.youtube.com/watch?v=NvJ3AIUW9X0&t=962s) don't forget sunscreen and subscribe. — Dr. Dray

## Mentioned Dr. Dray, China, Zinc oxide, Titanium dioxide, YouTube, Amazon, LikeToKnowIt, Instagram, Pinterest, Facebook, Twitter, TikTok

## Video description If your skincare keeps pilling, this video from dermatologist Dr. Dray explains why it happens and how to stop those annoying little balls and flakes from forming on the skin. New research suggests that pilling is influenced not only by the products being used, but also by skin hydration, oiliness, pH, skin texture, product layering, and application technique.

The study discussed in this video found that sunscreen was the biggest promoter of pilling, particularly when applied over another skincare product. The research also found that rubbing products into the skin, especially with back-and-forth or circular motions, was associated with more pilling.

Dr. Dray discusses what skincare pilling actually means, whether pilling indicates that skincare is not absorbing, why the same sunscreen may pill on one person but not another, whether you should wait between skincare products, and how to apply sunscreen without disrupting the protective film.

The video also explains why simplifying a skincare routine, using appropriate amounts of product, allowing products to settle, and gently spreading or pressing products into the skin may help reduce pilling.

TIMESTAMPS:

0:00 Introduction 0:56 What Is Skincare Pilling? 2:03 The Study 3:00 Sunscreen Was the Biggest Culprit 4:50 Your Skin May Also Play a Role 6:07 Dry Skin Doesn't Necessarily Mean You Need More Products 7:23 How You Apply Your Products Matters 8:53 Should You Wait Between Products? 10:18 Does Pilling Mean Your Products Aren't Absorbing? 11:31 What About Foundation? 12:59 Why Does the Same Product Pill for One Person but Not Another? 13:34 Tips for Stopping Skincare Pilling 16:02 What This Study Doesn't Tell Us 17:XX Final Takeaway

KEY TOPICS: skincare pilling, skin pilling, sunscreen pilling, why does my sunscreen pill, how to stop skincare pilling, how to stop sunscreen from pilling, skincare layering, sunscreen application, skincare routine, skincare mistakes, product pilling, makeup pilling, foundation pilling, skincare products balling up, sunscreen balling up, skincare not absorbing, dry skin, skin hydration, skin pH, skincare application technique, dermatologist skincare advice.

Pilling does not necessarily mean that a skincare product is ineffective or that you have chosen the wrong products. The interaction between the formulation, your skin, the amount applied, the products underneath, and your application technique can all play a role.

Most importantly, pilling is not a reason to skip sunscreen. If sunscreen is causing pilling, changing the products underneath it and adjusting application technique may help.

If you've experienced skincare pilling, Dr. Dray would love to know which products tend to pill for you and what tricks have helped.

Subscribe for evidence-based dermatology, skincare reviews, ingredient explanations, sunscreen advice, and practical skincare tips.

This video discusses research findings for educational purposes and is not a substitute for individualized medical advice.

FTC: This video is not sponsored. Links are commissionable, meaning I may earn commission from purchases made through links.

💜Shop my Amazon store https://o.bttn.io/0BwiPWFIZLG 💜Follow me on liketoknowit https://www.liketoknow.it/drdrayzday 💜Social media Instagram @drdrayzday Pinterest https://www.pinterest.com/drdrayzday/ Facebook @DrDrayzDay Twitter: @drdrayzday Tiktok: @drdrayzday

Disclaimer: This video is not intended to provide diagnosis, treatment or medical advice. Content provided on this Youtube channel is for informational purposes only. Please consult with a physician or other healthcare professional regarding any medical or health related diagnosis or treatment options. Information on this Youtube channel should not be considered as a substitute for advice from a healthcare professional. The statements made about specific products throughout this video are not to diagnose, treat, cure or prevent disease.

[Source](https://www.youtube.com/watch?v=NvJ3AIUW9X0)

中文简报

临床研究显示：叠加防晒霜导致了80%的护肤品搓泥现象在保湿霜上摩擦涂抹防晒霜会破坏紫外线防护成膜并引发大部分搓泥，需要使用者精简底层护肤品并采用按压方式涂抹。 Dr. Dray深入分析了一项探究护肤品为何搓泥的临床研究，指出在已有护肤层上叠加防晒霜占所观察到搓泥现象的约80%。研究表明，皮肤自身参数（如水合度较低、皮脂分泌较少以及pH值较高）与配方不兼容一样，都会导致皮肤更容易搓泥。此外，相较于轻拍或按压动作，直线和打圈摩擦产生的摩擦力会显著剪切正在形成的保护膜。虽然搓泥并不一定会抵消普通活性精华的吸收，但它会严重破坏防晒所需的均匀屏障。为解决这一问题，她建议简化晨间护肤步骤，必要时直接在素颜皮肤上涂抹防晒霜，并改进涂抹手法，而不是直接放弃防晒。一项临床研究显示，防晒霜是护肤品搓泥的主要诱因，在打底产品上叠加使用时，占所观察到搓泥情况的约80%。 (3:00) 搓泥受个体皮肤生理状态的显著影响，在水合度较低、皮脂分泌较少、pH值较高且测量质地较平滑的皮肤上发生频率明显更高。 (4:50) 物理涂抹手法直接影响成膜稳定性：直线来回揉搓产生的搓泥率最高，而轻拍或按压则能最大程度减少产品受剪切破坏。 (7:23) 出人意料的是，在防晒霜上涂抹粉底液反而减少或解决了现有的搓泥现象，这可能是由于粉底增加的水分和成膜剂绑定了底层产品。 (11:31)

Reading summary

Reviewing clinical research on cosmetic flaking, dermatologist Dr. Dray explains that skincare pilling is driven by an interplay between product film formation—particularly in sunscreens—individual skin physiology, and mechanical friction, rather than single isolated ingredients. Sunscreen Film Disruption and Efficacy Risks (3:00) In a clinical study evaluating 528 women aged 20 to 49 with a history of pilling, roughly 41% experienced pilling during multi-step product testing. Sunscreen emerged as the primary driver, accounting for approximately 80% of all observed pilling occurrences when smoothed over underlying skincare products. Dr. Dray notes that sunscreens are formulated to build a uniform, protective film across the skin to block ultraviolet radiation. When physical friction or incompatible layers disrupt this setting process, the formula balls up. While inorganic mineral filters like zinc oxide and titanium dioxide frequently clash with water-based formulas due to their spreading resistance, the study identified no universal villain ingredient. Dr. Dray highlights a critical functional concern regarding product efficacy. While active serums that pill may still partially absorb into the skin, pilled sunscreen directly compromises sun protection. Because ultraviolet defense requires a continuous barrier, visible clumping signals an uneven, patchy film that cannot be assumed to deliver its labeled UV rating. Biological Skin Traits Drive Product Compatibility (4:50) The study indicated that pilling is not solely a formulation defect; individual skin physiology plays a substantial role. Participants who experienced product pilling consistently exhibited distinct baseline parameters: lower skin hydration, lower sebum production, higher surface pH, and smoother measured skin texture. Dr. Dray notes that these biological variations explain why an identical product can apply seamlessly on one person while balling up on another. These findings also counter common layering habits among people with dry skin. Consumers often respond to dryness by layering heavy serums and moisturizers beneath their sunscreen. However, Dr. Dray cautions that adding excessive layers often backfires by creating an unstable mixture of conflicting polymers, emulsifiers, oils, and water. The study demonstrated that no single base product universally caused sunscreen to pill, invalidating broad claims that specific product pairings are inherently incompatible for everyone. Application Friction and the Counterintuitive Makeup Effect (7:23) The mechanical motion used during application directly affects product stability. Investigators evaluated four techniques—patting, pressing, circular rubbing, and linear back-and-forth rubbing—finding that linear rubbing produced the highest rate of pilling. Dr. Dray compares this motion to an eraser on paper, where lateral shear forces peel the setting film away from the skin surface. She advises replacing vigorous rubbing and massage with gentle spreading, patting, or pressing. Regarding wait times, Dr. Dray points out that the study found no evidence-based rule prescribing rigid waiting intervals, such as 30 seconds, though the overall moisture level and texture dynamics between layers influence stability. Surprisingly, applying foundation over sunscreen was found to reduce or resolve pilling occurrences, contrary to the expectation that an extra layer would worsen flaking. Dr. Dray reports the researchers' working theories: foundation film-formers may anchor the sunscreen down, its added moisture might assist adhesion to the stratum corneum, or its ingredients may physically smooth the underlying layer. Dermatologist Strategies for Modifying Routines (13:34) To eliminate pilling, Dr. Dray advises paring routines down to fewer steps. Because sunscreens are formulated in moisturizing lotion, cream, or gel vehicles that prevent transepidermal water loss, they can be applied directly to clean, bare skin if underlying serums cause friction. When adjusting application amounts, Dr. Dray emphasizes that users should reduce the volume of toners, serums, and moisturizers, but never decrease the amount of sunscreen applied, as adequate coverage is required to achieve the labeled SPF. She also recommends accounting for climate, noting that high humidity delays dry-down times and requires more patience before adding layers, and suggests troubleshooting application technique before discarding a preferred sunscreen. The evaluated study has clear limitations: its cohort was restricted to Chinese women aged 20 to 49 with Fitzpatrick skin types II through IV who already had a history of pilling, and it did not directly quantify UV protection levels or isolate specific causal ingredients. Dr. Dray concludes that further research is required across broader demographics, diverse cosmetic textures, and specific wait-time variables to better understand product interactions.

Source quotes

[0:00] Dr. Dray: sort of like well the pills of lint or material that form on an old sweater. [6:07] Dr. Dray: perfect storm [6:07] Dr. Dray: product A plus product B equals pilling [6:07] Dr. Dray: never use this serum under that sunscreen [9:07] Dr. Dray: Oh my gosh, where are they coming up with these? [12:59] Dr. Dray: Dr. Dray reviewed this skincare product and claimed it caused no pilling... Is she a liar? [12:59] Dr. Dray: I'm not [16:02] Dr. Dray: don't forget sunscreen and subscribe.

Original transcript

[0:00] Well, hey guys, welcome back. If you're [0:01] new here, I'm Dr. Dre. I'm a [0:03] board-certified dermatologist. If you've [0:05] ever applied your skin care products and [0:07] then as you're applying them, you notice [0:09] these little balls or flakes start [0:11] peeling up off the surface of the skin. [0:13] You've experienced skin care peeling. [0:15] It's super frustrating. Maybe you put on [0:17] a moisturizer or a serum and then your [0:19] sunscreen and then you're going to put [0:20] your foundation on and you're like, "Why [0:22] are these little balls coming up all [0:24] over the place? Is my skin care just [0:26] coming off? Is it actually absorbing [0:28] properly? Is it even working at this [0:30] point? And importantly, how can I stop [0:32] this from happening? We actually have [0:33] some newer interesting research on this [0:36] very topic. A recent study looks [0:37] specifically at skincare pilling, not [0:39] only for different products, but also [0:41] they examine skin qualities, [0:43] characteristics, as well as the way in [0:45] which people apply products. They have [0:48] some really interesting findings, and [0:49] I'm excited to share these with you all [0:51] in the hopes of helping you guys out [0:52] when it comes to encountering this [0:54] frustrating outcome. Pilling is when a [0:57] skincare or makeup product forms these [0:59] little flakes or balls. It's almost like [1:01] the product is rolling up off the [1:03] surface of the skin. Sort of like well [1:05] the pills of lint or material that form [1:08] on an old sweater. A lot of people [1:10] notice it as they're actually rubbing [1:12] product in. And there are a lot of [1:14] theories as to why this happens. And [1:16] I've done videos in the past on tips and [1:18] tricks and strategies. But given this [1:21] newer paper that has come out that I've [1:23] found, I want to get into some of what [1:24] they really found with regards to [1:26] product type incompatibility, unique [1:29] aspects of your skin that might be [1:30] playing a role, the product most likely [1:33] to cause peeling, and importantly, [1:35] things that seem to show promise for [1:38] reducing peeling. Frankly, there's not a [1:40] lot of research on skinincare pilling. [1:42] As you can imagine, there are thousands [1:45] and thousands and thousands of not just [1:47] different skin care products, but makeup [1:49] products, new ones coming out all the [1:50] time. Not to mention, everyone's skin is [1:53] very, very different. This study is [1:55] great because it actually tried to [1:57] isolate and look at some of these very [1:59] specific aspects of skinincare products [2:01] and skincare product application. The [2:03] study included 528 women ranging in age [2:06] anywhere from 20 to 49 from China. They [2:10] had Fitzpatrick photoype 2 through 4. [2:13] And importantly, these were individuals [2:15] who identified themselves as [2:17] experiencing skinincare pilling. So in [2:19] other words, they didn't look at people [2:21] who had never encountered this before. [2:23] So that's important to factor in going [2:24] in. But about 41% of the participants [2:27] experienced peeling throughout the [2:29] study. The researchers first measured [2:30] characteristics of their skin type, [2:32] their oiliness, skin hydration, skin pH, [2:35] skin texture, water loss, and [2:37] desquamation, which is just the medical [2:39] term for the skin peeling. Then the [2:41] participants applied different skin care [2:43] products followed by sunscreen and then [2:45] foundation. And the researchers actually [2:47] assessed the amount of peeling with each [2:49] step. And they recorded how exactly the [2:51] participants went about applying the [2:53] products, like were they rubbing it in [2:54] in circles or patting it in. So this [2:56] allowed them to look at skincare product [2:58] peeling from a couple of different [2:59] angles. And one of the most interesting [3:01] findings was that sunscreen was actually [3:03] the number one promoter of skincare [3:05] product peeling. There were actually [3:07] hundreds of peeling events with [3:09] sunscreen application alone. By [3:11] comparison, there were far fewer peeling [3:13] events when foundation was applied over [3:16] a base. Whereas about 80% of the [3:18] observed peeling events actually [3:20] happened when sunscreen was applied onto [3:23] some other product base. This doesn't [3:25] mean that sunscreen is inherently [3:27] defective or should never ever be [3:29] applied over another product. Sunscreen, [3:31] it's one of the most important aspects [3:33] of your skinincare routine. Let's get [3:35] that straight. It tells us that [3:36] sunscreen formulations may be [3:38] particularly vulnerable to peeling under [3:40] certain conditions. And one of the [3:42] reasons for this is that sunscreen is [3:44] formulated to form this relatively even [3:46] and uniform film on the surface of the [3:49] skin. And that film is part of what [3:50] allows sunscreen to provide consistent [3:53] protection of the surface of the skin. [3:55] So when you start rubbing additional [3:56] products over that film, theoretically [3:58] you can disrupt it. Some sunscreen [4:00] formulations contain certain ingredients [4:02] like mineral particles, polymers, and [4:04] film forming agents. This might all [4:06] contribute to how a given sunscreen [4:08] product dries down and performs in [4:10] conjunction with other products. The [4:11] researchers specifically pointed out [4:13] that sunscreens formulated with zinc or [4:15] titanium dioxide might end up being more [4:18] incompatible with certain other skin [4:21] care products of water-based [4:22] formulation. However, the study didn't [4:25] identify a single ingredient or set of [4:27] ingredients that was consistently [4:29] reproducibly associated with peeling. In [4:32] other words, I wouldn't look at the [4:33] ingredient list and be like, that's 100% [4:36] going to pill on my skin. But it does [4:38] sort of confirm what I have noticed over [4:40] the years when I do get sunscreen [4:43] peeling, which happens to me from time [4:45] to time, tends to be with mineral [4:47] sunscreen formulas. Let me know in the [4:49] comments if that's the case for you as [4:50] well. But your skin itself and its [4:53] unique makeup might actually be a [4:55] driving factor for skincare product [4:56] peeling as well. The researchers [4:58] identified that people who seem to [5:00] experience peeling had some particularly [5:03] notable consistent features about their [5:05] skin. Those who experienced product [5:07] pilling were a lot more likely to have [5:09] lower skin hydration levels. They were [5:11] also more likely to have lower oil [5:14] levels, sebum production, higher skin [5:16] pH, and a smoother skin texture on [5:20] measurement. That doesn't necessarily [5:21] mean, however, that having dry skin [5:24] guarantees you're going to get peeling [5:25] and having oily skin protects you from [5:27] peeling. It's obviously going to be a [5:29] lot more nuanced, but it does suggest [5:31] that skincare product peeling is not [5:33] something that is solely related to the [5:36] product by itself. It might boil down to [5:38] you, the individual, which now you guys [5:40] should keep in mind anytime you watch me [5:42] review a sunscreen and I say, "It didn't [5:44] cause me any peeling." Well, on my skin, [5:46] no. But that's not a guarantee that it [5:48] couldn't happen for you. Remember, [5:50] you're not applying skincare products to [5:52] a completely inert surface. Skin's got [5:54] its own unique water content. lipids, [5:57] oils, pH, varying levels of [6:00] desquamation, aka ongoing shedding. So, [6:02] all of these things likely have some [6:04] influence on whether or not a product [6:06] pills or not. If you're thinking, okay, [6:08] my skin is dry, so I'm just going to use [6:10] moisturizer to combat that before [6:13] applying sunscreen, and it probably [6:15] won't peel, I'd be a little more [6:16] cautious. Adding more products isn't [6:18] necessarily the best approach to [6:20] reducing the likelihood of peeling. In [6:22] fact, adding more layers of different [6:24] products often creates the perfect [6:27] storm, if you will, for even more [6:29] product peeling. In this study, they [6:31] used multiple product bases to the skin [6:34] before applying sunscreen. And they [6:37] didn't notice any association with one [6:40] particular base over another with [6:42] sunscreen peeling. In other words, it's [6:44] definitely not as simple as product A [6:46] plus product B equals sunscreen pilling. [6:48] the same sunscreen, the same base [6:51] formulation, that pairing can perform [6:53] entirely different on someone else's [6:55] skin. So, sometimes people will say, [6:57] "Never use this serum under a sunscreen [7:00] or never use this with that sunscreen." [7:02] Not necessarily consistent. The reality [7:05] is going to be a lot more complicated. [7:07] It's likely influenced by product [7:08] textures, the polymers utilized, film [7:11] formers, different oils in the formulas, [7:13] their water content, the concentration [7:16] of certain ingredients like zinc or [7:18] titanium dioxide. The dry time might [7:20] influence that as well. And of course, [7:22] features unique to your skin. Speaking [7:24] of unique, everyone has their own [7:26] approach to physically putting product [7:28] on their face. Some people pat it in, [7:30] some people rub it in in a circular [7:32] motion. The researchers took a look at [7:34] four basic patterns of applying skincare [7:37] products. Patting, pressing, rubbing in [7:39] circles, and rubbing in a linear back [7:41] and forth motion. The greatest number of [7:43] peeling events actually happen with [7:45] rubbing, particularly linear rubbing. [7:48] That makes a lot of sense. That's kind [7:49] of like what you do when you erase [7:51] something and then you get those little [7:52] eraser balls coming up. Although [7:54] nowadays, do people even write with [7:56] pencils? So, I don't even know if that's [7:58] something that you guys relate to. [8:00] Basically, when a product has formed a [8:01] film on the skin, friction is going to [8:04] lead to some peeling perhaps in certain [8:07] circumstances. So, in other words, if [8:09] you're constantly encountering this [8:10] issue of peeling, you might actually try [8:12] a different application approach from [8:14] rubbing the product in back and forth [8:16] like that. Instead, you might try just [8:18] gently spreading the product across the [8:20] surface of the skin and then patting it [8:22] in or pressing it in with your finger [8:24] pads. You don't need to massage the [8:25] product in. That being said, if you've [8:27] ever applied mineral sunscreens, you [8:29] know, they require a bit more effort [8:31] usually to get on the surface of the [8:33] skin. They don't spread as easily as a [8:36] chemical sunscreen. So perhaps this is [8:38] also another contributing factor to why [8:41] they have observed or believe that [8:43] sunscreens with zinc or titanium [8:45] dioxide, aka mineral sunscreens, are [8:48] more likely. They require a bit more [8:49] effort to get them to spread on the [8:51] skin. A group, a bit more rubbing, in [8:53] other words. Now, here's another really [8:55] common line of questioning and often [8:58] given advice, and that is, well, it's [9:00] best to wait a certain defined amount of [9:02] time in between different product [9:05] layerings. People will say, for example, [9:07] wait 30 seconds after applying your [9:09] moisturizer, before applying your [9:11] sunscreen. It's like, oh my gosh, where [9:12] are they coming up with these? And while [9:14] allowing a product to settle in theory [9:16] makes sense for reducing the likelihood [9:18] of peeling, this study did not establish [9:21] a specific waiting period to prevent [9:23] product peeling. I say it's fair to [9:25] assume, however, that the greater the [9:27] number of layers of different products [9:29] and the wetter they are in between [9:31] application, that likely influences the [9:34] overall chances that you're going to get [9:36] some degree of product peeling. For [9:38] example, if you apply a thick, viscous, [9:42] water-based, slippery, hydrating serum [9:45] and then very quickly apply a mineral [9:47] sunscreen on over it and you rub it back [9:49] and forth, I think you're a lot more [9:51] likely to get peeling than you would be, [9:54] say, for example, if you applied more of [9:56] a water-based thin liquid that wasn't as [9:59] viscous or thick. you patted it into the [10:01] skin very quickly and then you applied a [10:03] chemical sunscreen on over it and you [10:05] were real careful and precise with your [10:07] application, then I think yeah, you're [10:09] those are two different application [10:11] approaches and product type layerings [10:13] that I think probably together will all [10:16] explain why one leads to peeling more [10:18] likely than the other. Now, here's [10:20] another line of questioning. Does [10:21] peeling mean that my products are not [10:23] working? Is my sunscreen not protecting [10:26] my skin? When it comes to non sunscreen [10:28] products, pilling itself doesn't [10:31] necessarily tell you that the ingredient [10:33] that you're interested in, at least [10:35] didn't make its way onto your skin and [10:37] down into your skin. It doesn't tell us [10:40] automatically how much of that [10:41] ingredient made it there. And the study [10:43] that we're discussing today, they [10:45] actually did not do any kind of [10:47] measurements to see how peeling [10:50] influenced product performance, [10:52] ingredient penetration, and overall sun [10:54] protection values. I think it's really [10:56] important, however, to lean on the side [10:59] of saying it really does reduce the [11:02] efficacy of sunscreen. If we just think [11:04] about how sunscreen works and how it [11:06] needs to work, we want our sunscreen to [11:08] form a uniform protective film across [11:11] the surface of the skin. If you're [11:13] vigorously rubbing the sunscreen back [11:14] and forth, you're getting those little [11:16] balls coming up. You can just assume [11:18] that that's areas of the skin where [11:20] either you didn't get any sunscreen [11:22] going down, where it's peeling up in a [11:24] ball, or it's at least taking it off, [11:26] meaning you've got patchy application. [11:28] The goal with sunscreen application is [11:30] an even consistent layer. Now, here's a [11:33] really surprising thing that they found. [11:35] One of the most common questions I get [11:37] is, "How do I apply makeup over [11:39] sunscreen?" And while I still don't have [11:41] a perfect evidence-based answer for you, [11:43] this study did provide us a little bit [11:45] of information that might be of interest [11:48] to you guys out there who often ask [11:50] this. You might assume that adding [11:52] foundation on top of sunscreen could [11:54] worsen all of this take some of your [11:56] sunscreen off. And yes, while it's true [11:58] the researchers did not measure how the [12:01] use of different products layered with [12:03] affected the overall sun protection [12:06] layer that you got, what it did show is [12:08] that foundation application over [12:10] sunscreen actually reduced the number of [12:13] peeling events of the hundreds of [12:15] sunscreen peeling events observed. They [12:17] found that the vast majority were [12:19] reduced or resolved after foundation was [12:22] applied. I don't want to overstate that. [12:24] Oh, go ahead and use a foundation. it's [12:26] going to solve all of your peeling [12:27] issues. And the researchers don't really [12:29] know why this happened. They speculate [12:31] that some of the ingredients in the [12:33] foundations might actually form the [12:34] secondary film over the sunscreen to [12:37] keep it on the skin better. Perhaps [12:39] maybe they provide a little bit of [12:41] hydration that allows the sunscreen to [12:43] better adhere. Or maybe they influence [12:45] how other products under the sunscreen [12:47] interact with that sunscreen film [12:49] forming outcome. In other words, I would [12:51] not look at this as a universal [12:52] skinincare rule. If you're getting [12:54] peeling of your sunscreen in the [12:55] morning, put foundation on over it. [12:57] It'll solve it. But it is an interesting [13:00] insight. And I think this study helps [13:01] answer another question, and that is why [13:03] is it that Dr. Dre reviewed this skin [13:06] care product and claimed it caused no [13:08] peeling? I bought it fully confident [13:10] that she was not lying and it peeled on [13:12] my skin. Is she a liar? I'm not. But it [13:15] could also be related to the fact that [13:17] we have different skin characteristics [13:19] and skin types. and it not peeling on my [13:22] skin is not a guarantee that it won't [13:23] peel on your skin. Differences in sebum [13:26] production, skin hydration, skin pH, all [13:29] seem to play a role in the likelihood of [13:31] peeling events. In other words, take my [13:33] reviews with a grain of salt. Let's get [13:35] down to some of the more practical [13:37] points, though. What could you actually [13:39] do proactively to reduce skin care [13:41] pilling? Number one, what I always [13:44] advocate, keep your routine simple. [13:46] Fewer products, less likely you're going [13:48] to get peeling. You don't necessarily [13:50] need seven layers under your sunscreen. [13:52] I also want to remind you guys if you [13:54] are using moisturizer and like this [13:57] study pointed out that may be a lot more [13:59] likely to cause peeling for you with [14:01] sunscreen applied on over. Remember that [14:03] sunscreen is moisturizing. It is [14:06] formulated in either a lotion or a cream [14:08] or a hydrating gel base. So it should [14:10] reduce transepidermal water loss. Brands [14:12] will often get very clever with the [14:14] marketing and call it a moisturizer with [14:17] sunscreen. If you enjoy additional [14:20] serums like I do under your sunscreen [14:22] and you don't have any issues, there's [14:24] no reason to stop. But if you're [14:25] constantly encountering this peeling [14:27] issue, it might be a good time to say, [14:29] you know what, I'm going to try just [14:31] putting this on a bare face, a bare dry [14:34] face. Number two, use less product. [14:37] That's a good approach for the other [14:38] skinincare products. We don't need [14:40] mounds and and a ton to go on the [14:43] surface of the skin. However, you don't [14:44] want to use less sunscreen product. In [14:47] fact, that's one of the reasons why [14:48] sunscreen fails. You need to get a thick [14:51] layer of sunscreen on in order to [14:52] achieve that SPF on the label. And you [14:55] know, like I said, one of the reasons [14:56] sunscreen fails is that people don't [14:58] apply enough. Less is better for other [15:01] products perhaps in reducing peeling, [15:03] but that's not an option with sunscreen. [15:05] You might try giving products a little [15:07] time to settle. Again, there's no [15:09] defined period of time that helps, [15:12] harms, is necessary. You're going to [15:14] have to use your best judgment. It's [15:16] likely going to be influenced not only [15:18] by the product that you're using, but [15:20] also your environment. I live in a very [15:22] humid climate. It takes forever for [15:24] things to dry if left to their own [15:27] devices without some external heat or [15:29] wind source. Try just gently spreading [15:31] products on, patting them in, or [15:33] pressing them into the skin. Also, pay [15:35] attention to what products are seeming [15:38] to be associated with you getting [15:39] peeling. It's likely specific [15:42] combinations of products that you're [15:43] using that are also playing a role. [15:46] Finally, to emphasize, do not sacrifice [15:48] your sunscreen to pilling. If a [15:50] sunscreen is otherwise good for you, you [15:53] like it, you love it. I would look at [15:55] changing some of the application [15:56] techniques, some of the other things [15:57] that you're using along with the [15:59] sunscreen before completely bailing on [16:01] the sunscreen itself. There are also, of [16:03] course, some limitations to this study [16:05] that are important to factor in. It's a [16:07] relatively large study. They were all [16:09] women ages 20 to 49 from China. And they [16:13] all came from a background of [16:15] experiencing product pilling. In other [16:17] words, if you've never experienced [16:18] pilling and anytime I mention it, you're [16:20] like, "What the heck is she even talking [16:21] about? I don't believe her that that [16:22] happens." This is probably not even [16:24] relevant to you. Okay? You probably [16:26] didn't even click into this video. So, [16:28] we're good there. Uh, you know, assuming [16:29] you clicked in cuz you get pilling and [16:31] you're annoyed by it, then it will be [16:33] relevant to you perhaps. In other words, [16:34] we should not assume that the results [16:36] are universally applicable. And there [16:38] isn't a specific ingredient that was [16:40] identified to be contributo to pilling. [16:43] But this research is an early step to [16:46] understanding why it is that this [16:48] happens. We need more research looking [16:49] at different skin types, different [16:51] populations, different product [16:52] formulations, maybe addressing the [16:54] weight time technique. Anyways guys, I [16:56] wanted to share that with you all cuz I [16:58] recently stumbled across it. It's about [17:00] 2 years old and I was like, I have got [17:02] to share this with my audience cuz this [17:04] is one of the most frequent things that [17:05] pops up in the comment section is like, [17:07] why is my skincare pilling? And like I [17:09] said, I've made a lot of videos on this [17:11] and this really brings an additional [17:13] educational piece into things that [17:15] hopefully helps you guys out in [17:16] identifying why this might be happening [17:18] for you and cutting down on the [17:20] likelihood that it happens to you in the [17:21] future cuz it's super frustrating. I [17:23] hope you all enjoyed today's video. If [17:25] so, give it a thumbs up, share with your [17:27] friends, and as always, don't forget [17:28] sunscreen and subscribe. I'll talk to [17:30] you guys tomorrow. Bye. [17:33] [music] [17:46] [music]