Costco Skincare Finds: What's Worth It? | Dermatologist Shops Costco

Dr Dray

AI-assisted summary of Costco Skincare Finds: What's Worth It? | Dermatologist Shops Costco — original source. Check the original for full context.

Source published: 2026-10-05

Key ideas

Preservative systems remain a critical differentiator in body cleansers, where Dr. Dray cautions against isothiazolinones in formulas like Olay Advanced Repair due to contact allergy risks, favoring alternatives preserved without them like Native and Aveeno Skin Relief. (0:40)
Mixing prescription retinoids into tubs of Cetaphil or bottles of AmLactin destabilizes the drug, destroys the product's preservative system, and causes chemical hot spots; active ingredients must be layered sequentially on the skin instead. (4:42)
Flavored lip balms like eos frequently cause delayed-type (Type IV) hypersensitivity that surfaces roughly 48 hours post-application, trapping users in a deceptive cycle of reapplying the allergen to soothe peeling lips. (6:41)
At $18.99, AmLactin's 12% lactic acid formula stands out as one of Costco's best evidence-backed skincare purchases, offering biopsy-proven efficacy for reversing steroid-induced dermal atrophy and age-related purpura. (13:52)

Detailed notes

## Background Published on YouTube by board-certified dermatologist Dr Dray on October 5, 2026, this shopping walkthrough evaluates personal care deals at Costco. According to the video description, Dr Dray examines body washes, moisturizers, serums, shampoos, and hand soaps from brands like Cetaphil, Olay, and Aveeno to share ingredient insights, value evaluations, and whether products like AmLactin are currently on sale.

## TL;DR Dr Dray explores Costco's aisles to evaluate skincare, haircare, and body care items, emphasizing ingredient safety, sensible formulations, and true retail value. She critiques widespread contact allergens such as isothiazolinone preservatives and flavored lip balms while recommending gentle standouts like Aveeno Skin Relief, Skin1004 Centella ampoules, and phenoxyethanol-preserved Pantene. Throughout the trip, she strongly cautions against social media trends of mixing prescription retinoids directly into moisturizer jars, highlighting formulation breakdown and localized irritation risks. Finally, she praises AmLactin Daily Moisturizing Lotion as an evidence-backed powerhouse for dermal remodeling, advising consumers to layer it sequentially with actives rather than attempting DIY compounding.

## Atmosphere & style The video carries the relaxed, unhurried feel of an everyday shopping vlog grounded by authoritative clinical precision. Dr Dray strolls through the warehouse aisles with dry humor and relatable observations about seasonal marketing, but shifts into a direct, no-nonsense educational tone whenever addressing safety hazards like contact dermatitis or improper retinoid mixing. It feels like browsing store shelves alongside a knowledgeable, candid friend who scrutinizes fine-print ingredient labels so you don't waste money or compromise your skin barrier.

## Bulletin - [00:40](https://www.youtube.com/watch?v=J45EyHkphu0&t=40s) Preservative systems remain a critical differentiator in body cleansers, where Dr. Dray cautions against isothiazolinones in formulas like Olay Advanced Repair due to contact allergy risks, favoring alternatives preserved without them like Native and Aveeno Skin Relief. - [04:42](https://www.youtube.com/watch?v=J45EyHkphu0&t=282s) Mixing prescription retinoids into tubs of Cetaphil or bottles of AmLactin destabilizes the drug, destroys the product's preservative system, and causes chemical hot spots; active ingredients must be layered sequentially on the skin instead. - [06:41](https://www.youtube.com/watch?v=J45EyHkphu0&t=401s) Flavored lip balms like eos frequently cause delayed-type (Type IV) hypersensitivity that surfaces roughly 48 hours post-application, trapping users in a deceptive cycle of reapplying the allergen to soothe peeling lips. - [13:52](https://www.youtube.com/watch?v=J45EyHkphu0&t=832s) At $18.99, AmLactin's 12% lactic acid formula stands out as one of Costco's best evidence-backed skincare purchases, offering biopsy-proven efficacy for reversing steroid-induced dermal atrophy and age-related purpura.

## Key takeaways - [00:40](https://www.youtube.com/watch?v=J45EyHkphu0&t=40s) The cosmetic industry's shift away from parabens has increased reliance on isothiazolinone preservatives, which carry a significantly higher risk of contact dermatitis in body washes. - [01:38](https://www.youtube.com/watch?v=J45EyHkphu0&t=98s) Fragrance-free Aveeno Skin Relief Body Wash ($14.99) is highlighted as the safest and highest-value warehouse option for sensitive skin barriers. - [01:49](https://www.youtube.com/watch?v=J45EyHkphu0&t=109s) Clayge Smooth Shampoo and Conditioner uses scalp-soothing licorice root extract and tea tree oil while omitting isothiazolinone preservatives, though its ingredients do not qualify as active anti-dandruff drugs. - [02:38](https://www.youtube.com/watch?v=J45EyHkphu0&t=158s) Kosé's Sekkisei Emulsion is deemed overpriced at $42.99 for a lightweight hydrator, despite the manufacturer's respected track record with budget formulas. - [03:08](https://www.youtube.com/watch?v=J45EyHkphu0&t=188s) Mass-market 'pro-retinol' marketing claims typically refer to retinyl palmitate or retinyl esters, which provide antioxidant benefits but lack the collagen-building efficacy of true retinol. - [04:00](https://www.youtube.com/watch?v=J45EyHkphu0&t=240s) Centella-based hydrating serums visually minimize pores by plumping the surrounding epidermal tissue with moisture rather than physically shrinking pore size. - [04:42](https://www.youtube.com/watch?v=J45EyHkphu0&t=282s) Compounding prescription retinoids directly into moisturizer jars destroys factory homogenization, leading to microbial contamination and concentrated hot spots that induce severe contact dermatitis. - [06:41](https://www.youtube.com/watch?v=J45EyHkphu0&t=401s) Allergic contact cheilitis is driven primarily by balm flavorings and fragrance, creating a delayed 48-hour inflammatory response that consumers frequently misidentify as ordinary winter chapping. - [08:10](https://www.youtube.com/watch?v=J45EyHkphu0&t=490s) Dermatological management of chronic intractable chapped lips requires eliminating all flavored multi-ingredient balms in favor of 100% white petrolatum alongside patch testing. - [09:52](https://www.youtube.com/watch?v=J45EyHkphu0&t=592s) Preservative selections vary within single brands; Pantene Essential Botanicals uses safe phenoxyethanol, whereas the brand's clear clarifying shampoos often retain isothiazolinones. - [13:52](https://www.youtube.com/watch?v=J45EyHkphu0&t=832s) Lactic acid is among the rare non-prescription ingredients with biopsy-confirmed clinical proof of remodeling dermal tissue and strengthening thinning, easily bruised skin. - [14:40](https://www.youtube.com/watch?v=J45EyHkphu0&t=880s) Topical retinoids and exfoliating lactic acid lotions should be layered consecutively on skin rather than pre-mixed in packaging, with application order having minimal impact on therapeutic performance.

## Detailed walkthrough ### [00:00](https://www.youtube.com/watch?v=J45EyHkphu0&t=0s) Body Wash Showdown: Fragrances, Preservatives, and the Thiazolinone Problem

Dr. Dray begins her Costco browsing session in the body wash aisle, jokingly observing that "the main difference between skin care marketed for men... versus not is the presence, I swear, of sandalwood." Skincare targeted toward men almost uniformly relies on heavy, woodsy scents. Her first stop is a three-pack of Harry's Body Wash in the "Wildlands" scent for $15.99. Looking at the ingredient list, she notes that it does not contain isothiazolinone preservatives (such as methylisothiazolinone or methylchloroisothiazolinone), which are notorious contact allergens. While she has never tried this formula herself, she observes that it appears to rely on essential oils from its fragrance blend to function as a preservative system.

She moves next to a new offering: Olay Advanced Repair Serum Body Wash. Given that it comes from Olay, Dr. Dray expects—and promptly confirms—the presence of "the B vitamin of all B vitamins, niacinamide." The formula also boasts shea butter, cocoa butter, vitamin E, and collagen (which functions effectively as a topical humectant and moisturizer). However, she is disappointed to discover that parent company Procter & Gamble formulated it with isothiazolinone preservatives, putting the price at $18. Dr. Dray laments the industry shift away from older preservatives, explaining that "if they just used parabens, then we wouldn't have to worry about thiazolinone contact allergy."

Checking another P&G brand to see whether the preservative strategy carried over, she examines the Native Nourishing Body Wash (Coconut & Vanilla scent). To her relief, the Native formula skips the isothiazolinones entirely while keeping niacinamide. It is currently on promotion at two 34-ounce bottles for $19.99. Finally, she spots her favorite deal among the cleansers: the fragrance-free Aveeno Skin Relief Body Wash for $14.99. She commends it as a much safer, high-value alternative for sensitive skin.

- **Harry's Body Wash (Wildlands scent)**: 3-pack for $15.99; free of isothiazolinone preservatives; relies on essential oil fragrance. - **Olay Advanced Repair Serum Body Wash**: $18; contains niacinamide, shea butter, cocoa butter, vitamin E, and collagen, but spoiled by isothiazolinone preservatives. - **Native Nourishing Body Wash (Coconut & Vanilla)**: 2 x 34 oz bottles for $19.99; contains niacinamide; free of isothiazolinones. - **Aveeno Skin Relief Body Wash**: Fragrance-free; $14.99; highlighted as the standout sensitive skin deal.

---

[01:49](https://www.youtube.com/watch?v=J45EyHkphu0&t=109s) Japanese Haircare & Skincare: Clayge and Sekkisei Emulsion

Dr. Dray spots a new arrival: the Japanese Clayge Smooth Shampoo and Conditioner set, priced at $39.99. Examining the shampoo, she notes soothing ingredients like licorice root extract (glycyrrhizinate) for calming scalp inflammation, alongside tea tree leaf oil. She clarifies that while tea tree oil "shows promise for dandruff," neither ingredient qualifies as an established anti-dandruff active drug; nonetheless, they can help soothe an irritated scalp. The shampoo looks effective for deep cleansing, while the conditioner is designed to reduce strand dryness, fragility, and breakage. Importantly, the line is free of isothiazolinone preservatives. The set markets a complex perfume profile with distinct fragrance progression:

- **Top notes**: Apple and pear - **Middle notes**: Rose and muguet (lily of the valley) - **Base notes**: White floral and musk

Turning to skincare, she notices the return of the Sekkisei Emulsion (a lightweight Japanese lotion) manufactured by Kosé, priced at $42.99. Dr. Dray expresses fondness for Kosé as a brand—pointing out their popular, fragrance-free Softymo Speedy Cleansing Oil—and recalls that the Sekkisei emulsion has a fresh, slightly citrusy aroma. However, at nearly $43, she considers the price tag far too steep for what it offers and recommends passing on it.

---

[03:08](https://www.youtube.com/watch?v=J45EyHkphu0&t=188s) L’Oréal Revitalift and Skin1004 Poremizing Ampoule

Dr. Dray evaluates two facial care options, beginning with L’Oréal Revitalift Triple Power Anti-Aging Moisturizer. She emphasizes that finding a fragrance-free formula from L’Oréal is exceptionally rare, making this $37.99 option worth consideration. The formula includes caffeine to temporarily reduce under-eye puffiness and erythema, as well as capryloyl salicylic acid (LHA), a lipophilic salicylic acid derivative that offers gentle, precise exfoliation. However, she warns shoppers not to fall for marketing jargon regarding "pro-retinol":

> "Don't get confused. That is going to be retinyl palmitate or retinyl ester, which is an antioxidant, cool, but it doesn't do what retinol does as far as wrinkles and collagen."

Next, she highlights the Skin1004 Madagascar Centella Poremizing Fresh Ampoule two-pack, on sale for $21.99. Expressing her enthusiasm for the Korean skincare brand, Dr. Dray states she enjoys "about 99.9% of what I try from them." This lightweight, soothing ampoule contains Centella asiatica and is ideal for calming post-cleansing facial flushing. She points out that any claims about shrinking pores stem strictly from deep hydration: by plumping the surrounding skin, it visually minimizes pore prominence. With generous bottle sizes, the two-pack represents a substantial, long-lasting value.

---

[04:42](https://www.youtube.com/watch?v=J45EyHkphu0&t=282s) Cetaphil Moisturizing Cream & The Dangers of "DIY Retinoid Compounding"

Turning to a warehouse staple, Dr. Dray spots Cetaphil Moisturizing Cream marked down from $19.99 to $15.99. While praising its value, she issues a stern warning against a dangerous skincare trend popular on social media: patients taking prescription retinoids (such as tretinoin, tazarotene, or trifarotene) and squeezing the entire tube into a tub of Cetaphil to create a DIY diluted cream.

```mermaid flowchart TD accTitle: Risks of DIY Compounding Retinoids with Moisturizers accDescr: Diagram illustrating how mixing prescription retinoids into a moisturizer tub causes chemical degradation, contamination, and skin irritation.

subgraph Error["DIY Mistake"] A["Squeeze Prescription Retinoid (Tretinoin, Tazarotene)"] --> B["Mix Directly into Cetaphil Cream Tub"] end

subgraph Failure["Formulation & Stability Breakdown"] B --> C["Disrupts Preservative System (Microbial Contamination Risk)"] B --> D["Destabilizes Active Drug Molecule (Renders Retinoid Ineffective)"] B --> E["Uneven Mechanical Mixing (Clumping of Active Ingredient)"] end

subgraph Consequence["Clinical Consequences"] C --> F["Bacterial / Fungal Growth in Tub"] D --> G["Loss of Therapeutic Efficacy"] E --> H["Hot Spots of Severe Irritation and Patchy Ineffective Zones"] end ```

Dr. Dray breaks down why DIY compounding fails: 1. **Destabilizing Chemistry and Preservatives**: Adding foreign bases ruins the carefully balanced preservative system, inviting microbial contamination and rendering the active medication chemically unstable and ineffective. 2. **Uneven Drug Distribution**: Manual mixing cannot replicate factory homogenization. The medication clumps, leading to "hot spots" of concentrated drug that trigger localized chemical burns and dermatitis, while other areas of the face receive no medication at all.

Her directive is simple: apply topical prescription medication cleanly as directed, let it absorb, and layer plain moisturizer on top as needed. She notes that while the lighter Cetaphil Moisturizing Lotion (which contains niacinamide) is not on sale this month, both formulas are solid choices when used properly.

---

[06:41](https://www.youtube.com/watch?v=J45EyHkphu0&t=401s) eos Super Balm and the Pathophysiology of Allergic Contact Cheilitis

Dr. Dray spots a 5-pack of eos Moisture Super Balm for $16.99, featuring marketing claims of "24 hours of moisture." She jokes that a more accurate label would be "development of allergic contact cheilitis." Clarifying the brand's history, she explains that the infamous backlash eos faced years ago was not unique to their formulation; rather, it reflects a universal risk with any scented lip balm compared to pure 100% white petrolatum.

The primary offender is flavorant—which she defines as simply "lip balm speak for fragrance"—though common culprits also include beeswax, propolis, castor oil, and the camphor and menthol found in Carmex. She walks through why consumers routinely misdiagnose their own lip balm allergies:

When someone suffers from chronic, intractable chapped lips, Dr. Dray emphasizes that dermatologists must suspect contact dermatitis first. Her standard clinical intervention is to eliminate all flavored balms, switch the patient exclusively to plain petroleum jelly, and pursue formal patch testing to isolate the causative allergen.

---

[09:52](https://www.youtube.com/watch?v=J45EyHkphu0&t=592s) Haircare Returns: Pantene Essential Botanicals

Dr. Dray spots the return of the Pantene Essential Botanicals Hydrating Volume Shampoo & Conditioner duo in a new scent profile. Having previously finished full bottles of the range herself, she gives the line high praise as an effective, reliable drugstore option. She points out that although she personally has an excess of large shampoo bottles open at home right now, this formula is particularly notable because it uses phenoxyethanol rather than isothiazolinones. She cautions that shoppers must read ingredient labels carefully, because other traditional Pantene formulas—specifically their clear, colorless clarifying shampoos—still rely on isothiazolinones for preservation.

---

[10:45](https://www.youtube.com/watch?v=J45EyHkphu0&t=645s) Holiday Hand Soap Sneak Peek

As she rounds into the seasonal personal care aisle, Dr. Dray catches sight of the newly arrived Jolly & Bright Hand Soap Collection, featuring updated seasonal bottle illustrations. She pauses to begin examining the formulation and scent lineup for the holiday season.

[10:55](https://www.youtube.com/watch?v=J45EyHkphu0&t=655s) Jolly & Bright Holiday Hand Soap Collection

Dr. Dray spots a festive four-pack of seasonal hand soaps featuring whimsical illustrations of teddy bears, a cat, and mice. Examining the ingredient deck from a dermatological standpoint, she appreciates that the formula relies on phenoxyethanol for preservation rather than sensitizing isothiazolinones. While she hasn't tested these specific soaps to know whether they strip the skin—noting that overly drying hand washes frequently trigger painful hangnails for her—the variety pack includes four distinct holiday fragrances: Candy Cane, Warm Wishes, Balsam Fir, and Winter Berry. She laughs at the mysterious "Warm Wishes" label, noting there is no scent description on the packaging to clue shoppers in, so the brand is "just going to keep you guessing."

Ultimately, Dr. Dray decides against picking them up for herself simply because her household wouldn't finish four large bottles before the holidays pass, leaving decorative bottles lingering long after the season ends. However, at $9.99 for the entire bundle, she considers it an affordable, charming option for shoppers hosting holiday guests or outfitting multiple bathrooms.

- **Set Contents**: Four holiday-themed liquid hand soaps (Candy Cane, Warm Wishes, Balsam Fir, and Winter Berry). - **Preservative System**: Formulated with phenoxyethanol; free of isothiazolinone preservatives. - **Retail Price**: $9.99 for the 4-pack.

---

[11:51](https://www.youtube.com/watch?v=J45EyHkphu0&t=711s) Mrs. Meyer's Clean Day Seasonal Hand Soap 4-Pack

Turning to another multi-pack, Dr. Dray evaluates a seasonal assortment from Mrs. Meyer's priced at $18.49. Her familiarity with these fragrances primarily stems from using the brand’s multi-surface cleaning sprays around the house rather than the hand soaps. At her own sinks, she remains loyal to Dove liquid hand washes because they are reliably moisturizing and gentle on the skin barrier. Examining the seasonal assortment, she enthusiastically praises the Apple Cider scent, gives Elderberry credit for a pleasant fruit note, and calls Iowa Pine "nice and piney," though she admits she personally dislikes Snowdrop.

She points out that this particular set offers a very practical, staggered timeline for household use. Rather than being boxed into purely Christmas-themed scents, a household can transition smoothly across the colder months: starting with Apple Cider in October, moving to Iowa Pine or Elderberry for Thanksgiving and December, and finishing with the crisp, wintery Snowdrop in January. While joking that viewers certainly do not tune into a dermatologist's channel for "home and entertaining" advice, she notes that the variety makes sense for larger families or anyone hosting gatherings through late fall and winter.

- **Featured Scents**: Apple Cider, Iowa Pine, Elderberry, and Snowdrop. - **Cost**: $18.49 for the four-bottle collection. - **Dr. Dray's Everyday Choice**: Dove hand wash, prioritized for its barrier-friendly, non-drying moisturizing base.

---

[13:52](https://www.youtube.com/watch?v=J45EyHkphu0&t=832s) AmLactin Daily Moisturizing Lotion: Clinical Benefits and Layering

Arriving at the skincare aisle staples, Dr. Dray checks the price tag on AmLactin Daily Moisturizing Lotion and discovers its September promotional discount has officially expired. Even at its regular warehouse price of $18.99, she considers it an absolute essential and one of the finest, most evidence-backed formulas Costco carries. Alongside topical retinoids like retinol and adapalene, lactic acid is one of the exceptionally rare over-the-counter ingredients with robust, biopsy-confirmed clinical evidence proving it can remodel skin tissue. Beyond merely smoothing the epidermis, it has been demonstrated to help reverse corticosteroid-induced dermal atrophy and strengthen thinning skin prone to age-related bruising (actinic purpura) on the forearms and backs of the hands.

She frequently champions AmLactin as a multi-purpose anti-aging gem and a premier solution for keratosis pilaris. While primarily used as a body lotion, it can be applied to the face if personal skin tolerance allows, though lactic acid carries some risk of stinging or irritation. Dr. Dray also revisits an earlier caution about DIY skincare hacks: consumers should never squirt a prescription tretinoin or OTC retinoid tube directly into the AmLactin bottle, as destabilizing the emulsion destroys both formulas. Instead, the two should simply be layered sequentially on the skin, where the precise order of application does not significantly alter efficacy.

```mermaid flowchart TD accTitle: How to safely combine AmLactin and topical retinoids accDescr: Diagram illustrating that retinoids and AmLactin should be layered sequentially rather than premixed in the bottle.

subgraph WrongWay ["Incorrect Approach (DIY Mixing)"] W1["Topical Retinoid"] -->|"Do NOT mix inside bottle"| W2["AmLactin Bottle"] W2 --> W3["Compromised Stability & Efficacy"] end

subgraph RightWay ["Dermatologist-Approved Layering"] R1["Clean Skin"] --> R2["Apply First Product (Retinoid or AmLactin)"] R2 -->|"Layer on skin (order does not matter)"| R3["Apply Second Product"] R3 --> R4["Enhanced Hydration & Dermal Remodeling"] end ```

- **Product & Price**: AmLactin Daily Moisturizing Lotion (12% lactic acid formulation) at $18.99. - **Clinical Capabilities**: Biopsy-proven epidermal smoothing, reversal of steroid-induced dermal atrophy, reduction of age-related purpura (senile/actinic bruising), and management of keratosis pilaris. - **Application Advice**: Can be used on the body or tolerated facial skin; layer separately with topical retinoids rather than mixing products together in the container.

## Notable quotes > [00:00](https://www.youtube.com/watch?v=J45EyHkphu0&t=0s) the main difference between skin care marketed for men... versus not is the presence, I swear, of sandalwood. — Dr. Dray

> [00:40](https://www.youtube.com/watch?v=J45EyHkphu0&t=40s) the B vitamin of all B vitamins, niacinamide. — Dr. Dray

> [00:40](https://www.youtube.com/watch?v=J45EyHkphu0&t=40s) if they just used parabens, then we wouldn't have to worry about thiazolinone contact allergy. — Dr. Dray

> [01:49](https://www.youtube.com/watch?v=J45EyHkphu0&t=109s) shows promise for dandruff — Dr. Dray

> [03:08](https://www.youtube.com/watch?v=J45EyHkphu0&t=188s) Don't get confused. That is going to be retinyl palmitate or retinyl ester, which is an antioxidant, cool, but it doesn't do what retinol does as far as wrinkles and collagen. — Dr. Dray

> [04:00](https://www.youtube.com/watch?v=J45EyHkphu0&t=240s) about 99.9% of what I try from them. — Dr. Dray

> [06:41](https://www.youtube.com/watch?v=J45EyHkphu0&t=401s) 24 hours of moisture — Dr. Dray

> [06:41](https://www.youtube.com/watch?v=J45EyHkphu0&t=401s) development of allergic contact cheilitis. — Dr. Dray

> [06:41](https://www.youtube.com/watch?v=J45EyHkphu0&t=401s) lip balm speak for fragrance — Dr. Dray

> [10:55](https://www.youtube.com/watch?v=J45EyHkphu0&t=655s) just going to keep you guessing. — Dr. Dray

> [11:51](https://www.youtube.com/watch?v=J45EyHkphu0&t=711s) nice and piney — Dr. Dray

## Mentioned Harry's Body Wash, Olay Advanced Repair Serum Body Wash, Procter & Gamble, Native Nourishing Body Wash, Aveeno Skin Relief Body Wash, Clayge Smooth Shampoo and Conditioner, Sekkisei Emulsion, Kosé, Softymo Speedy Cleansing Oil, L'Oréal Revitalift Triple Power Anti-Aging Moisturizer, Skin1004 Madagascar Centella Poremizing Fresh Ampoule, Cetaphil Moisturizing Cream, Cetaphil Moisturizing Lotion, eos Moisture Super Balm, Carmex, Pantene Essential Botanicals Hydrating Volume Shampoo & Conditioner, Jolly & Bright Hand Soap Collection, Mrs. Meyer's Clean Day Seasonal Hand Soap, Dove, AmLactin Daily Moisturizing Lotion, Costco, Dr. Dray

## Video description Join dermatologist Dr. Dray for a Costco skincare shopping trip! She browses Costco’s selection of skincare, body care, hair care, and personal care products, offering a dermatologist’s perspective on ingredients, formulas, and prices. Which Costco skincare products are actually worth buying, and which ones might be better left on the shelf?

From body washes and moisturizers to serums, shampoos, conditioners, and hand soaps, Dr. Dray takes a closer look at popular products from brands like Olay, Aveeno, Native, Cetaphil, L’Oréal, Skin1004, and more. She discusses what to look for in product formulations, evaluates the value of Costco skincare deals, and shares insights to help you make informed choices without overspending.

She also checks whether AmLactin is on sale this month!

Shop smart and find out which Costco skincare and beauty products are worth your money.

TIMESTAMPS

0:00 Harry’s Body Wash 0:40 Olay Advanced Repair Serum Body Wash 1:13 Native Nourishing Body Wash 1:38 Aveeno Skin Relief Body Wash 1:49 Clayge Smooth Shampoo & Conditioner Set 2:38 Sekkisei Emulsion Moisturizer 3:08 L’Oréal Revitalift Triple Power Anti-Aging Moisturizer 4:00 Skin1004 Poremizing Fresh Ampoule 4:43 Cetaphil Moisturizing Cream 6:41 eos Moisture Super Balm 9:52 Pantene Essential Botanicals Hydrating Volume Shampoo & Conditioner 10:45 Jolly & Bright Hand Soap Collection 11:50 Mrs. Meyer’s Hand Soap 13:52 Is AmLactin on Sale This Month?

#Costco #CostcoSkincare #SkincareShopping #Dermatologist #DrDray #CostcoFinds #SkincareReview #DrugstoreSkincare #AffordableSkincare #BodyCare #AntiAgingSkincare #SkincareIngredients #BeautyShopping

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[Source](https://www.youtube.com/watch?v=J45EyHkphu0)

中文简报

皮肤科医生逛Costco：哪些护肤品真正值得买？ Dr Dray实地走访Costco，评估了护肤、护发及身体护理产品，重点关注成分安全性、配方合理性与实际性价比。她指出了异噻唑啉酮类防腐剂和有香味的润唇膏等常见接触性过敏原，同时推荐了温和表现优异的产品，如Aveeno Skin Relief、Skin1004积雪草安瓶以及以苯氧乙醇防腐的Pantene。此外，她强烈告诫不要盲从社交媒体将处方维A酸直接混入整罐保湿霜中的做法，强调这会破坏配方并增加局部刺激风险。最后，她盛赞AmLactin日常保湿乳液是经实证支持促进真皮重塑的强效产品，建议消费者按顺序分层叠涂活性成分，而非自行混合调配。防腐体系是身体清洁产品的一大关键区别点；由于存在接触性过敏风险，Dr. Dray告诫避免使用Olay Advanced Repair等含有异噻唑啉酮配方的产品，更推崇Native和Aveeno Skin Relief等不含该类成分的替代品。 (0:40) 将处方维A酸混入整罐Cetaphil或整瓶AmLactin中会破坏药物稳定性、摧毁产品的防腐体系并导致化学热点（局部浓度过高）；活性成分应在皮肤上按先后顺序分层涂抹。 (4:42) 像eos这类有香味的润唇膏常常会引发迟发型（IV型）超敏反应，通常在涂抹约48小时后显现，导致使用者陷入为了缓解脱皮而不断重新涂抹过敏原的恶性循环。 (6:41) 售价18.99美元的AmLactin 12%乳酸配方是Costco最具实证支持的护肤好物之一，经活检证实其具有逆转激素引起的皮肤萎缩及老年性紫癜的功效。 (13:52)

Reading summary

Evaluating Costco personal care offerings, dermatologist Dr. Dray highlights evidence-backed active ingredients while warning shoppers against common preservative allergens, misleading anti-aging marketing, and hazardous social media DIY formulation trends. Preservative Choices and Contact Allergens in Cleansers and Balms (0:00) When evaluating cleansers and lip products, Dr. Dray emphasizes the risk of contact dermatitis driven by preservatives and fragrances. She advises avoiding isothiazolinones (such as methylisothiazolinone), notorious contact allergens found in products like Olay Advanced Repair Serum Body Wash ($18) and certain clarifying shampoos. In contrast, she highlights safer alternatives preserved without isothiazolinones, including Harry's Body Wash ($15.99 for three), Native Body Wash ($19.99 for two 34-ounce bottles), the phenoxyethanol-based Pantene Essential Botanicals and Jolly & Bright hand soaps ($9.99 for four), and her top sensitive-skin recommendation, fragrance-free Aveeno Skin Relief ($14.99). A similar allergic risk occurs in lip care. Addressing multi-packs like eos Moisture Super Balm ($16.99), Dr. Dray notes that flavorants, beeswax, and essential oils frequently trigger allergic contact cheilitis. Unlike immediate hypersensitivity reactions that produce immediate hives or swelling, this delayed Type IV hypersensitivity takes approximately 48 hours to manifest as peeling, cracking, and burning. Patients routinely mistake the resulting inflammation for simple dryness and reapply the product, perpetuating a chronic cycle that generally requires discontinuing scented balms in favor of plain white petrolatum. Differentiating Marketing Jargon from Ingredient Performance in Facial Care (3:08) Dr. Dray assesses facial care staples by separating genuine ingredient functionality from promotional framing. She commends L’Oréal Revitalift Triple Power Moisturizer ($37.99) for offering a rare fragrance-free formulation featuring caffeine for temporary puffiness reduction and capryloyl salicylic acid (LHA) for gentle exfoliation. However, she warns consumers that its advertised "pro-retinol" consists of retinyl palmitate or retinyl esters—antioxidants that do not replicate the collagen-building or wrinkle-reducing capabilities of true retinol. She also evaluates Korean and Japanese imports available in the warehouse. While she views Kosé's Sekkisei Emulsion as excessively priced at $42.99 for its benefits, she praises the Skin1004 Madagascar Centella Poremizing Fresh Ampoule ($21.99 for two). She explains that the Centella asiatica formulation effectively calms post-cleansing facial redness, clarifying that its pore-minimizing claim stems from deep epidermal hydration that plumps surrounding skin rather than an actual structural reduction in pore size. The Formulation Hazards of DIY Retinoid Compounding (4:42) Responding to a viral social media trend where users squeeze prescription retinoids (such as tretinoin, tazarotene, or trifarotene) directly into tubs of Cetaphil Moisturizing Cream ($15.99), Dr. Dray issues an urgent clinical warning. She explains that manual mixing cannot duplicate pharmaceutical homogenization, leaving high-concentration "hot spots" that induce chemical burns and dermatitis alongside untreated zones receiving no active medication. Furthermore, introducing prescription drugs into commercial moisturizer bases disrupts the manufacturer's preservative equilibrium, elevating the risk of bacterial and fungal contamination while chemically destabilizing and inactivating the retinoid molecule. She advises patients never to premix topical prescription medications into jars of Cetaphil or bottles of AmLactin, but instead to apply the retinoid cleanly to the skin, let it absorb, and layer the plain moisturizer sequentially on top. Clinical Evidence and Structural Remodeling with Lactic Acid (13:52) Dr. Dray identifies AmLactin Daily Moisturizing Lotion ($18.99) as one of the most effective, clinically supported formulations available in the warehouse. Formulated with 12% lactic acid, it represents one of the rare over-the-counter ingredients supported by biopsy-confirmed evidence showing structural remodeling of skin tissue. Beyond exfoliating and serving as a standard treatment for keratosis pilaris, lactic acid has demonstrated clinical utility in thickening thinning skin, reversing topical corticosteroid-induced dermal atrophy, and mitigating senile or actinic purpura (age-related bruising on forearms and hands). While it carries a slight potential for stinging and irritation, Dr. Dray notes it can be applied to both the body and tolerant facial skin, reinforcing that combining it with topical retinoids should be done by layering sequentially rather than blending within the container. Dr. Dray concludes that warehouse savings require careful label screening, advising shoppers to prioritize proven actives like lactic acid and plain moisturizers while bypassing overpriced emulsions, overhyped retinoid derivatives, and sensitizing preservative systems.

Source quotes

[0:00] Dr. Dray: the main difference between skin care marketed for men... versus not is the presence, I swear, of sandalwood. [0:40] Dr. Dray: the B vitamin of all B vitamins, niacinamide. [0:40] Dr. Dray: if they just used parabens, then we wouldn't have to worry about thiazolinone contact allergy. [1:49] Dr. Dray: shows promise for dandruff [3:08] Dr. Dray: Don't get confused. That is going to be retinyl palmitate or retinyl ester, which is an antioxidant, cool, but it doesn't do what retinol does as far as wrinkles and collagen. [4:00] Dr. Dray: about 99.9% of what I try from them. [6:41] Dr. Dray: 24 hours of moisture [6:41] Dr. Dray: development of allergic contact cheilitis. [6:41] Dr. Dray: lip balm speak for fragrance [10:55] Dr. Dray: just going to keep you guessing. [11:51] Dr. Dray: nice and piney

Original transcript

[0:00] The main difference between skin care [0:02] marketed for men, not that this is two [0:04] for men, but for men versus not is the [0:08] presence, I swear, of sandalwood. It [0:10] always has like woodsy scents. This [0:13] month we have the three pack of Harry's [0:15] body wash. [0:17] Uh all the wild [0:19] wild land scent. $15.99. [0:23] This does not have the thiazolinone [0:26] preservatives, which are common [0:27] allergens. [0:29] I've never used this before, [0:31] but uh [0:32] it appears to rely, [0:35] from what I can glean, on the essential [0:37] oils for the fragrance as a [0:39] preservative. So, this is new. Of [0:42] course, it's from Olay, so you know [0:44] automatically it's going to have, you [0:46] guessed it, the B vitamin of all B [0:48] vitamins, niacinamide, shea butter, [0:51] cocoa butter, vitamin E, and lipids with [0:54] collagen, which is moisturizing in skin [0:57] care products, but Olay, Procter & [1:01] Gamble, snuck in the thiazolinones. $18. [1:04] It's too bad. See if they just used [1:07] parabens, then [1:09] we wouldn't have to worry about [1:11] thiazolinone contact allergy. Now, I'll [1:13] be curious to see if the Native body [1:16] wash also has [1:18] the thiazolinone. [1:20] No, they don't. So, Native is also owned [1:24] by Procter & Gamble, also has [1:26] niacinamide. [1:28] Uh and this is on sale. The two 34-oz [1:32] bottles for $19.99 this month. [1:35] Coconut and vanilla. [1:38] I really like this one, the sensitive [1:41] skin relief body the skin relief body [1:43] wash from Aveeno, fragrance-free, [1:45] $14.99. [1:47] So, this is a much better deal. This is [1:49] new. We have a Japanese shampoo and [1:51] conditioner. The shampoo has licorice [1:54] root, which is good for calming down [1:57] inflammation. It also has tea tree leaf [2:00] oil, which shows promise for dandruff. [2:02] And so, nothing really of established as [2:05] an anti-dandruff, though those things [2:07] can help. [2:09] This looks like it'd be decent at [2:10] cleansing the scalp, and then the [2:12] conditioner would cut down on breakage [2:14] and fragility and dryness of the strand. [2:17] This is nice, though, cuz there are no [2:18] thiazolinones, so you don't have to [2:20] worry about that. [2:21] Claims to have [2:23] fragrance progression, with the top note [2:25] of apple, pear, a middle of rose and [2:28] muguet, [2:30] and then a lasting white floral and [2:32] musk. [2:35] Interesting. $39.99 for this. [2:38] This Japanese lightweight emulsion, aka [2:41] a lightweight lotion, is back. [2:44] I've I've tried this. I really like the [2:46] Kose brand. It does have fragrance. It's [2:49] kind of a citrusy almost aroma, if I [2:51] remember correctly. [2:53] Um but I do really like this brand. They [2:55] have a fragrance-free cleansing oil, the [2:58] Speedy Softymo one. But this is $42.99. [3:02] I think that's pretty steep, honestly. I [3:05] would pass on that. Then this month, we [3:07] have a fragrance-free [3:09] Revitalift. Fragrance-free from L'Oreal [3:12] is rare. This has caffeine, which can [3:15] temporarily improve redness under the [3:17] eyes. It can improve puffiness for some [3:19] people. [3:20] This also has capryloyl salicylic acid, [3:23] that's a modified form of salicylic acid [3:26] that kind of more precisely exfoliates. [3:29] It does not have retinol in it. They [3:31] like to say pro-retinol, [3:33] um but don't get confused. That is going [3:35] to be retinal palmitate or retinal [3:37] ester, [3:38] which uh is an antioxidant, cool, but it [3:41] doesn't do what retinol does as far as [3:44] wrinkles and collagen, [3:46] or what retinol can do. [3:48] $37.99, though, that that looks like [3:51] it'd worth trying. [3:53] Simply because it's a fragrance-free [3:55] facial moisturizer. [3:57] Um and L'Oreal is usually pretty good [3:59] when they avoid fragrance. Now, I've [4:01] talked about this before. This has to be [4:02] one of my favorite Korean brands. I get [4:04] along really well and uh very much enjoy [4:08] about 99.9% [4:09] of what I try from them, including this [4:12] pore-mizing fresh ampoule set. This is [4:15] great to put on after cleansing just to [4:17] kind of soothe the skin, especially [4:20] um if you get a little flushing and [4:21] blushing. It's It's very calming. It's [4:23] hydrating. And it because it's [4:26] hydrating, it will, like any [4:27] moisturizing ingredient, diminish the [4:30] appearance of pores. [4:31] It um is on sale right now, $21.99 for [4:35] these two bottles. And that's a pretty [4:37] sizable amount in that bottle. It will [4:40] last a long time. [4:42] Cetaphil Moisturizing Cream is really uh [4:46] a great value here, $15.99, normally [4:49] $19.99. Now, a word of warning. I see [4:52] people get tempted or intrigued by or [4:54] led to believe that it is okay to take [4:57] your [4:59] retinoid, like your tretinoin, your [5:01] tazarotene, your trifarotene, or any [5:03] prescription medication and squeeze it [5:07] into here and make a jar of moisturizer [5:10] with that ingredient in it. Doesn't work [5:12] that way. You basically render the [5:15] medication ineffective and you screw up [5:18] the preservative chemistry, so it can [5:21] cause all kinds of problems. The [5:23] ingredients will no longer be guaranteed [5:26] to be stable. And then, of course, when [5:28] preservatives go off, not only does [5:30] ingredient stability become [5:32] questionable, but then you have to worry [5:33] about contamination. So, don't do that. [5:35] Just put on your topical medications and [5:38] then apply moisturizer as needed. People [5:41] get really focused on, like, can I layer [5:43] this with that and this and that and [5:45] this and that? And 99.99999% [5:48] of the time the answer is yes, provided [5:50] you tolerate it. But, um people don't [5:53] seem to bat an eye at the claim that you [5:55] can just put a [5:57] a medication into a tub of cream and get [6:00] the same thing. The other issue with [6:02] doing that, um as a side note, the [6:04] lotion version is not on sale this [6:06] month, but this is also good. It's a [6:07] little more lightweight. These do have [6:10] uh niacinamide, but what I was going to [6:11] say is when you do that, you also have a [6:14] problem with patchy application because [6:17] you're not going to have the active drug [6:19] evenly distributed into the formula, [6:21] right? Uh because it's not it's not [6:24] meant, you know, it hasn't been [6:25] formulated that way. So, you're going to [6:28] get clumps of the drug that are going to [6:30] deposit on the skin in a real [6:32] concentrated fashion, and then other [6:34] areas of the skin where you're not going [6:35] to get anything. So, you're going to [6:36] have hot spots of irritation. It's just [6:39] not It's just not the way to do it. We [6:41] have the five tubes of EOS Super Balm, [6:45] 24 hours of moisture, {question mark} uh [6:49] development of allergic contact [6:51] cheilitis, $16.99. [6:54] Uh if you're not allergic to flavorants, [6:55] uh [6:56] um then, you know, you might like these. [6:58] You know, uh several years ago, the [6:59] contact cheilitis issue arose for EOS, [7:03] and people thought it was a problem with [7:04] them. It's not a problem with them per [7:06] se, it's a problem with all [7:08] non-straight-up petroleum jelly lip [7:10] balms. Uh is that you can develop [7:12] allergy to ingredients in them, and [7:14] flavorant is is one of the most common. [7:16] Flavorant is um [7:18] lip balm speak for fragrance. [7:21] You can easily develop an allergy to [7:23] that, and I warned about this a lot [7:25] because what happens is uh allergic [7:27] contact dermatitis, especially the first [7:30] couple of rounds you're dealing with it, [7:32] it's a delayed type hypersensitivity. [7:34] You know, over time, if you keep [7:35] exposing yourself to it, it just [7:37] intensifies, and the onset is a lot more [7:40] rapid, but [7:41] what happens with allergic contact [7:43] dermatitis is your immune system becomes [7:45] sensitized to an ingredient. In this [7:47] case, we'll say flavorant. And then [7:49] every time that ingredient is put on the [7:52] skin, uh within about 48 hours, you [7:54] usually develop a rash. It's not [7:56] immediate, though. It's not an immediate [7:58] media type hypersensitivity. See, there [8:00] are several different [8:03] varieties and categories of allergic [8:05] reaction. [8:07] And what we're talking about when we [8:08] talk about contact dermatitis is going [8:11] to be a delayed type hypersensitivity, [8:14] as opposed to immediate type [8:15] hypersensitivity, where you get exposed [8:17] to something you're allergic to, and [8:19] usually what you get is um hives, [8:22] swelling, you can get anaphylaxis, [8:24] wheezing. [8:26] That is acute, happens very quickly. [8:28] This is a delay, and the reason I'm [8:30] pointing that out is because people do [8:32] not make the connection. Because you put [8:34] it on and the immediate gratification [8:37] piece is there. It feels good, it [8:39] softens the dryness, everything feels [8:41] better. But within about 2 days, your [8:43] lips are even worse for wear than they [8:45] ever were to begin with, but you don't [8:47] make the connection, so you reapply this [8:50] if you're allergic to something. And [8:52] it's not just the flavorant/fragrance, [8:54] although that is a very common culprit. [8:56] Can be propolis, it can be castor oil, [8:58] it can be beeswax. [9:00] Um [9:01] you know, uh Carmex is notorious for [9:04] this problem because they put camphor [9:06] and menthol in there, which also can be [9:09] culprits. So, um straight-up plain [9:12] petroleum jelly is the best bet. And [9:14] people say, "Well, my lips don't feel [9:17] moisturized right away with that." Um [9:19] okay, but your lips, if you are allergic [9:22] to a lip balm, are going to feel more [9:25] moisturized at first, and then they're [9:27] going to they're going to get [9:28] increasingly irritated and dry as a [9:30] result of the allergy. So, when somebody [9:32] has stubborn dry, chapped lips that [9:35] don't seem to [9:36] go away, [9:38] you've got to suspect contact [9:39] dermatitis, and then you recommend to [9:42] just switch to plain petroleum jelly in [9:45] the meantime before patch while patch [9:47] testing can be pursued to figure out [9:49] what it is, if anything, the person is [9:52] allergic to. Look who's back, you guys, [9:54] here at Costco. We have a This time new [9:57] scent of the Pantene Essential [9:59] Botanicals shampoo and the conditioner. [10:03] I love this shampoo and conditioner. As [10:06] a side note, I used it several years [10:07] ago. I actually finished the entire [10:10] bottle of shampoo and conditioner. I'm [10:11] not in the market for [10:13] shampoo right now cuz I have several [10:15] large bottles in progress of different [10:17] scents. Um but these are really good and [10:20] they don't have the thiazolinones. Some [10:22] Pantene shampoos do, though, so you have [10:25] to read the ingredients. These do not. [10:27] It's just a good basic shampoo and [10:29] conditioner. Um for example, I believe, [10:32] I could be wrong, but I think the [10:33] Pantene [10:35] See, this one's got phenoxyethanol. It's [10:37] okay. [10:38] Maybe they've phased it out, but a lot [10:40] of the Pantene shampoos, like that clear [10:43] colorless one, they have the [10:44] thiazolinones. New this month, we have [10:47] the Jolly and Bright hand soap [10:49] collection back with a new lineup of [10:53] uh illustrations, and I think they are [10:55] adorable. I like the little teddy bears [10:59] uh and the little cat and the mice. [11:02] That's sweet as well. These do not have [11:05] thiazolinones in them, either. They have [11:07] phenoxyethanol, which is great. Um I've [11:09] never used one of these hand soaps [11:11] before to comment on its performance as [11:13] far as does it dry out your hands? Cuz [11:15] some hand soaps I find to be drying and [11:17] end up drying out. I end up getting [11:19] hangnails, actually, as a result. But, [11:21] um you get candy cane, warm wishes, [11:25] balsam fir, and winter berry. What is [11:28] warm wishes? Do they give a [11:30] description of that? [11:33] They do not. I'm just going to keep you [11:34] guessing. That's really cute though. I'm [11:37] not going to go through four bottles of [11:39] hand soap and then I won't want to throw [11:41] them. But they're that um how much are [11:43] these? [11:45] Oh, $9.99. That's a good price for all [11:48] that festive holiday hand soap. You also [11:51] have Mrs. Meyer's hand soaps as well. I [11:54] love the apple cider scent. I do not [11:57] personally care for the snowdrop. And [12:00] I'm specifically speaking to my [12:01] experience using these as counter spray, [12:04] you know, the multi-surface spray. I [12:06] don't actually buy the hand soap [12:08] uh much not because it's bad or [12:10] anything. I just I have my Dove hand [12:13] soap and I'm not really interested in [12:15] deviating from those cuz the scents are [12:17] too good and the formula is nice and [12:19] moisturizing. Nonetheless, [12:22] um we have Yeah, I highly recommend the [12:24] apple cider scent. It's very good. I [12:26] personally don't like snowdrop. I don't [12:29] believe I've ever scented it. I I don't [12:30] believe I've ever smelled the [12:31] elderberry. [12:34] Oh, elderberry's got a nice berry. I [12:37] wouldn't know it was elderly, but [12:42] Iowa pine is nice and piny. [12:45] Um I know I like these as multi-surface [12:48] sprays, but yeah, I've used their hand [12:50] soaps before and they're pretty good. [12:52] So, how much are they asking for this? [12:56] $18.49. [12:58] Here we are in October. You can do the [13:00] apple cider [13:02] and then you can you know, transition [13:04] over to elderberry or pine for the [13:07] holidays and then you transition into [13:09] January with the like other scents that [13:12] are wintery, you know, they're not in [13:15] your face summer, but they're not [13:17] necessarily a slam dunk Christmas [13:20] holiday season scent. You know what I [13:21] mean? So, I think this is actually more [13:24] pragmatic as far as a scent selection [13:27] unless you have a lot of people in your [13:29] house and you go through a lot of hand [13:31] soap and you're going to go through [13:32] those four bottles or you're having a [13:34] big big family gatherings over the [13:36] holidays. Yeah, then get the cuter [13:38] packaging. [13:39] Um that's not a dermatologic [13:41] recommendation. It's just a home and [13:44] entertaining tip as though I'm a expert [13:46] on that. You guys do not tune in here [13:49] for that, but [13:50] unsolicited wreck nonetheless. And just [13:53] like that, September came and went and [13:56] the AmLactin is no longer on sale. This [13:59] is still [14:01] a must get here in my opinion. 18.99. [14:05] This is one of the few skin care [14:07] products, you guys, aside from, you [14:09] know, [14:10] retinol and then of course adapalene [14:12] that you can hang your hat on showing [14:15] objectively like biopsy confirmed [14:18] improvement in not just the epidermis, [14:21] okay? Not just like surface smoothness. [14:23] Although that's nothing to That's [14:25] nothing to, you know, side eye. That [14:27] Those are all desirable targets, [14:29] epidermal stuff. But it actually can [14:32] reverse dermal atrophy related to [14:34] corticosteroid use. People who get [14:37] age-related bruising, for example, on [14:39] the backs of the hands. This is like one [14:41] of the few things out there and I always [14:43] point it out as an anti-aging gem [14:45] because [14:46] you can put it on the face if you [14:48] tolerate it. It can be a little [14:49] irritating. You can use it with topical [14:52] retinoid. Just don't put your retinoid [14:55] directly in there, okay? Like we were [14:56] talking about earlier, don't squeeze the [14:58] tretinoin in the bottle and think that [14:59] you have a retinoid lactic acid lotion. [15:03] No, it doesn't work that way. [15:04] But you can layer them. The order [15:06] doesn't matter so much. [15:09] And this this will really hydrate your [15:12] skin. If you tolerate it on the face, [15:15] I use it on the body. It's excellent for [15:16] keratosis pilaris. I mean, in my [15:18] opinion, this is This is one of the best [15:21] things here. I routinely purchase this [15:23] myself. Yeah, it's a good price here [15:25] nonetheless. [15:42] >> [music]