The Lab

No BS skincare science

Minimalist adult acne routine products on a neutral surface including a salicylic acid serum, azelaic acid tube and a ceramide moisturizer routines

Adult acne routine 2026: evidence-based step-by-step plan

Adult acne routine for 2026: a dermatology-backed AM and PM plan for hormonal breakouts, with actives by skin type, evidence and product picks.

July 23, 2026

Two minimalist lactic acid serum bottles on a clean neutral surface representing budget Sunday Riley Good Genes dupes product-reviews

Sunday Riley Good Genes dupes: 6 budget alternatives

Sunday Riley Good Genes dupes compared: 6 budget lactic acid serums that match the results, with prices, concentrations and peer-reviewed evidence.

July 22, 2026

Two premium skincare bottles side by side on a clean neutral surface, illustrating a Drunk Elephant vs Dr. Dennis Gross comparison product-reviews

Drunk Elephant vs Dr. Dennis Gross: which is worth it

Drunk Elephant vs Dr. Dennis Gross compared by formula, price and results: vitamin C, peptides, glycolic peel pads and honest buying picks.

July 17, 2026

Two Korean skincare bottles side by side on a clean light surface, illustrating a COSRX vs Beauty of Joseon comparison product-reviews

COSRX vs Beauty of Joseon: which K-beauty brand fits your routine in 2026

COSRX vs Beauty of Joseon compared by formula, price and skin fit: snail mucin vs rice and ginseng, gentle actives and honest buying picks.

July 16, 2026

Skincare serum bottle and pipette on a neutral surface, illustrating actives used to treat melasma routines

Melasma skincare: evidence-based actives that fade pigment

A dermatology researcher explains which melasma actives work, from tranexamic acid and azelaic acid to sunscreen, with the clinical evidence behind each.

July 15, 2026

Two minimalist skincare serum bottles side by side representing a The Ordinary versus The Inkey List comparison product-reviews

The Ordinary vs The Inkey List: which dupe brand wins 2026

Independent The Ordinary vs The Inkey List comparison: pricing, INCI transparency, actives lineup and beginner fit, with peer-reviewed sources and clear picks.

July 10, 2026

Two gentle drugstore skincare bottles arranged side by side representing a Cetaphil versus Avene comparison for sensitive skin product-reviews

Cetaphil vs Avene: which sensitive skin classic actually wins in 2026

Independent Cetaphil vs Avene comparison for sensitive skin: cleansers, moisturizers, thermal spring water, price and evidence, with clear picks by concern.

July 10, 2026

Two luxury Japanese skincare bottles side by side on a clean light surface, illustrating a Tatcha vs SK-II comparison product-reviews

Tatcha vs SK-II: Is Luxury J-Beauty Worth $200 in 2026

Tatcha vs SK-II compared by formulation: galactomyces vs Pitera, per-ml cost, the real science on fermented ferment filtrate, and who should splurge in 2026.

July 9, 2026

Two drugstore skincare bottles side by side on a clean surface representing a CeraVe versus La Roche-Posay barrier brand comparison product-reviews

CeraVe vs La Roche-Posay: barrier brands head to head

Independent CeraVe vs La Roche-Posay comparison: ceramides, niacinamide, thermal water and prebiotics, with peer-reviewed evidence and skin-type fit.

July 3, 2026

Pale yellow azelaic acid serum on a fingertip against a clean ceramic surface, illustrating a comparison of azelaic acid concentrations ingredients

Azelaic acid 10% vs 20%: which one do you need

Azelaic acid 10% vs 20%: which strength suits acne, rosacea and dark spots, how the OTC and prescription tiers differ, and how to use each safely.

July 2, 2026

Two skincare serum bottles side by side on a clean white surface, illustrating a chemical exfoliant comparison between a BHA and an AHA ingredients

Salicylic acid vs glycolic acid: BHA or AHA in 2026

Salicylic acid (BHA) or glycolic acid (AHA)? A dermato-cosmetic breakdown of how each exfoliant works, which skin type it suits, and how to use them safely.

June 30, 2026

White cream textures layered on a soft background symbolising skin barrier lipids ingredients

Ceramides 1, 2 and 3: which ratio repairs your barrier

Ceramides 1, 2 and 3 do different jobs in your skin barrier, and the 3:1:1 ratio with cholesterol and fatty acids is the one with real evidence. Honest guide.

June 30, 2026

Glass dropper bottle of peptide serum on a clean neutral surface representing a signal peptide treatment ingredients

Peptide categories: signal, carrier, enzyme, neuro

The four peptide families in skincare decoded: signal, carrier, neurotransmitter and enzyme-inhibiting, with the evidence behind Matrixyl and copper peptides.

June 29, 2026

Clear serum dropper bottle with water droplet on a blue gradient surface symbolising hydration ingredients

Hyaluronic acid molecular weight: HMW vs LMW vs oligo

HMW vs LMW vs oligo hyaluronic acid: HMW sits on top to hold water, LMW slips deeper to plump, oligo stays near the surface. Evidence based guide.

June 29, 2026

Amber dropper bottle of vitamin C serum next to fresh citrus on a clean surface ingredients

Vitamin C: L-ascorbic acid vs derivatives, which actually works in 2026

L-ascorbic acid is the gold standard, but SAP, MAP, THD ascorbate and ethyl ascorbic acid all have their place. Evidence-based vitamin C comparison.

June 27, 2026

Amber dropper bottle of niacinamide serum on a neutral surface representing vitamin B3 skincare ingredients

Niacinamide overhyped? The truth dermatologists rarely tell you

Niacinamide is everywhere, but is it as life changing as the marketing says? Evidence-based review of what it does, at what dose, and when it disappoints.

June 26, 2026

Two amber dropper serum bottles on a white surface representing retinol and retinal comparison ingredients

Retinol vs retinal: which one works better in 2026

Retinol vs retinal explained: retinal is one step closer to retinoic acid and works faster, while retinol is gentler and cheaper. Evidence-based comparison.

June 25, 2026

Hand holding a skincare bottle and reading the small-print INCI ingredient list on the back label guides

How to Read an INCI List: Decode Skincare in 5 Minutes

Learn how to read an INCI list fast: the descending-order rule, the 1% line, hero actives and the marketing tricks the ingredient list quietly hides.

June 23, 2026

Close-up of even, healthy skin texture on a cheek, illustrating faded post-inflammatory acne marks after an evidence-based routine routines

Cicatrices d'acné : estompez les taches post-inflammatoires

The best products for acne scars and post-inflammatory marks: which actives fade them, what only a dermatologist can fix, and how long it really takes.

June 23, 2026

Dropper serum bottle on a clean surface, representing a peptide treatment serum ingredients

Peptides in skincare: are they worth the hype?

What peptides actually do in skincare, the evidence behind Matrixyl and copper peptides, why most serums underdose them, and how to spot one worth buying.

June 18, 2026

A small jar of eye cream with a fingertip dab beside it, set against a clean neutral background to illustrate a targeted eye care routine routines

Best Eye Creams: Do You Even Need One? What Dermatologists Say

A dermatology-graded guide to eye creams: whether you need one, which ingredients actually work for dark circles, puffiness and fine lines, and the best picks.

June 17, 2026

Minimalist skincare bottles with bright caps arranged on a clean neutral surface guides

Is Drunk Elephant Worth the Price? An Honest Ingredient Review

An evidence-first Drunk Elephant review: the Suspicious 6 marketing, hero products that earn their price, the overpriced skips, and who should actually buy.

June 16, 2026

Blue tin of classic cream and clear oil droplets on a glass surface, representing mineral oil as a skincare occlusive science

Mineral oil in skincare: the truth behind Nivea's favourite ingredient

What mineral oil and petrolatum do in skincare, whether they are safe, the cancer and pore-clogging myths, and the cosmetic vs industrial grade split.

June 13, 2026

Bathroom shelf with cosmetic bottles and clinical glassware, representing the science behind preservatives in skincare science

Are parabens safe? What the science actually says

Parabens, preservatives, endocrine disruptors, the 2004 Darbre study, FDA and EU rulings, the short chain vs long chain split, and what to use instead.

June 12, 2026

Clear gel serum spread on a glass surface, representing the silky slip silicones give to skincare formulas ingredients

Silicones in skincare: are they safe? The dimethicone debate

What silicones actually do in skincare, whether dimethicone is safe, the pore-clogging myth, the D4/D5 environmental rules, and how to read a label.

June 11, 2026

A clear plant-based bakuchiol serum dropper held above a leaf, illustrating bakuchiol as a natural retinol alternative ingredients

Bakuchiol vs Retinol: Is the Natural Alternative as Effective?

Bakuchiol vs retinol, compared on real evidence. Efficacy, side effects, sun sensitivity, pregnancy and which one fits your skin, with peer-reviewed sources.

June 8, 2026

Lineup of Korean skincare bottles on a clean light surface, illustrating a simple COSRX routine guides

COSRX : Top produits K-beauty classés par efficacité

COSRX guide ranking the brand's best K-beauty products by formulation, from Snail 96 Mucin to the BHA liquid, plus dupes, routine stacks and honest skips.

June 6, 2026

Minimalist clear skincare bottles on a clean light surface, illustrating a simple Japanese hydration routine guides

Hada Labo Complete Guide: Japan's Best-Selling Skincare Ranked

Hada Labo guide ranking Japan's best-selling lines by formulation: Gokujyun, Shirojyun, Premium and more, plus how to layer them properly.

June 4, 2026

Gentle cream cleanser dispensed onto a fingertip against a clean neutral background, illustrating a sensitive skin cleansing routine routines

Best Cleansers for Sensitive Skin: Gentle Formulas Ranked

A formulation analyst ranks the best cleansers for sensitive skin by surfactant type, pH and soothing actives, with picks for rosacea and eczema.

June 3, 2026

Pale yellow azelaic acid serum textured on a fingertip against a clean ceramic background, illustrating an azelaic acid skincare routine ingredients

Azelaic Acid: The Most Underrated Ingredient for Acne and Rosacea

Azelaic acid quietly outperforms most actives for acne, rosacea and dark spots. A guide to concentrations, products and what the evidence really shows.

June 3, 2026

Creamy fragrance-free barrier moisturiser in a ceramic bowl, representing a ceramide-rich skincare product ingredients

Ceramides explained: why your skin barrier needs them

What ceramides actually do, the nine types in skincare, why the 3:1:1 ratio matters, and how to choose a barrier cream that works, with evidence.

June 1, 2026

Soft pink ceramic bowl with a creamy fragrance-free moisturiser, used as part of a gentle rosacea skincare routine skin-types

Rosacea skincare routine: what to use and what to avoid

A dermato-cosmetic guide to building a rosacea skincare routine. The ingredients to avoid, the actives that actually calm flushing, and how to layer them.

June 1, 2026

Amber dropper serum bottle on a marble surface, used for fading dark spots and hyperpigmentation routines

Sérums hyperpigmentation : meilleurs anti-taches 2026

A dermato-cosmetic guide to the best serums for hyperpigmentation and dark spots. Which actives fade pigment, how to layer them, and what the evidence says.

May 29, 2026

Fluid sunscreen tube and texture swatch on a clean surface, illustrating common SPF myths science

SPF : 10 erreurs que vous faites avec la crème solaire

A dermatologist breaks down 10 stubborn SPF myths, from base tans and SPF 100 to indoor exposure and chemical filters, with the actual evidence behind each.

May 29, 2026

Jar of petroleum jelly next to a moisturiser bottle on a marble bathroom counter routines

Slugging with Vaseline: what dermatologists actually think

A dermato-cosmetic review of slugging with petroleum jelly. What occlusion does to your barrier, who should try it, and how to do it without breakouts.

May 29, 2026

Skincare bottles arranged in a neat row representing a four-night skin cycling routine routines

Skin cycling: does this TikTok trend actually work?

A dermatology-graded review of skin cycling. What the 4-night protocol does for your barrier, what the evidence says, and how to build a smarter version.

May 28, 2026

A row of anti-aging serums and a sunscreen bottle on a neutral surface, illustrating evidence-based skincare science

Best anti-aging ingredients ranked by clinical evidence

An evidence-graded ranking of the best anti-aging ingredients in skincare, from tretinoin and SPF to peptides, bakuchiol and overhyped extracts.

May 27, 2026

Two cleansing bottles, an oil based balm and a foaming gel, lined up on a clean bathroom shelf science

Double cleansing: is it worth it? What the science says

Is double cleansing actually backed by science? A formulation-led guide to oil and water cleansers, who benefits, common mistakes, and what evidence shows.

May 27, 2026

Amber glass dropper bottle of vitamin C serum on a white marble surface ingredients

Sérum Vitamine C : Formes, concentrations et efficacité

A dermato-cosmetic guide to vitamin C serums: which form to choose (L-ascorbic acid vs derivatives), ideal concentration, pH, and how to layer in your routine.

May 25, 2026

Two skincare bottles side by side on a white surface, illustrating an ingredient comparison ingredients

Salicylic acid vs benzoyl peroxide: which is better for acne?

Salicylic acid or benzoyl peroxide? A dermato-cosmetic breakdown of how each ingredient works, which acne type it suits, and how to combine them safely.

May 24, 2026

Flat lay of acne skincare routine products including a salicylic acid cleanser, adapalene tube and a non-comedogenic moisturizer routines

Acne Skincare Routine: Dermatologist-Approved Products Ranked

A complete acne skincare routine that works. Dermatologist-approved AM and PM steps, ingredient picks by acne type, and the products ranked A by SkinScore.

May 22, 2026

Lineup of Korean skincare bottles and a sheet mask on a clean light surface routines

K-beauty Routine Explained: What Science Actually Supports

Dermato-cosmetic deep dive into the K-beauty routine: 4 essential steps backed by science, 6 optional layers, and how to build your own.

May 21, 2026

Row of identical pharmacy-style serum bottles with minimalist labels on a clean white surface guides

The Ordinary Complete Guide: Every Product Ranked and Reviewed

The Ordinary guide ranking every major product by formulation, evidence and skin-type fit. Best buys, biggest skips, conflicts to avoid and a routine builder.

May 18, 2026

Dropper of hyaluronic acid serum next to a glass of water and a moisturizer jar on a clean surface ingredients

Acide hyaluronique : 5 erreurs qui assèchent votre peau

Hyaluronic acid mistakes can dry out your skin instead of hydrating it. Learn the 5 most common errors, the science behind them, and how to fix your HA routine.

May 16, 2026

Fluid sunscreen tube next to gel and matte texture swatches on a clean surface routines

Best Sunscreen for Oily Skin: No White Cast, No Grease

The best sunscreen for oily skin combines SPF 30 to 50, fluid texture, non-comedogenic filters and sebum control. Ingredient breakdown and application tips.

May 11, 2026

Two moisturizer jars side by side representing a luxury vs drugstore comparison product-reviews

La Mer vs CeraVe: the 350 EUR Question Answered by Science

La Mer vs CeraVe: formulation, ceramides vs Miracle Broth, per-gram cost, derm consensus, and the verdict on whether the 350 EUR is worth it.

May 10, 2026

Close-up of skincare product labels showing ingredient lists with fragrance and parfum listed science

Fragrance in Skincare: The Hidden Allergen in 60% of Products

Fragrance is the most common allergen in skincare. Which ingredients to avoid, how EU and US rules differ, and the best fragrance-free picks by category.

May 6, 2026

Two amber serum dropper bottles on a white surface representing niacinamide and vitamin C compatibility science

Niacinamide and vitamin C together: the myth is debunked

Can you mix niacinamide and vitamin C? Modern dermatology says yes. The 1960s lab study behind the myth, peer-reviewed evidence, and how to layer both.

May 3, 2026

Skincare products arranged in correct routine order on a bathroom shelf routines

Skincare Routine Order: Morning & Night Sequence That Works

The correct skincare routine order, AM and PM. Layering science, active ingredient conflicts, and a step-by-step sequence dermatologists actually recommend.

April 24, 2026

Skincare products arranged on a light surface with focus on ingredient labels, representing pregnancy-safe skincare analysis safety

Pregnancy-Safe Skincare: The Complete 2026 Ingredient Guide

Which skincare ingredients to avoid during pregnancy, which are safe to keep, and the evidence from ACOG, NHS, and SCCS behind each decision.

April 22, 2026

Close-up of a skincare INCI ingredient list being scanned with a finger, representing comedogenic ingredient checking ingredients

Comedogenic Ingredients: The Complete 2026 List With Ratings

Top 25 comedogenic ingredients ranked on the Fulton scale, plus the ingredients wrongly feared (mineral oil, dimethicone) and the INCI position rule.

April 22, 2026

Best moisturizers for dry skin arranged on a white bathroom shelf with ceramide cream jars routines

Best Moisturizers for Dry Skin: Dermatologist Picks Ranked

Dermatologist-ranked best moisturizers for dry skin, scored by formulation. Ceramide creams, drugstore vs luxury picks, and what ingredients actually work.

April 21, 2026

Two skincare moisturizer bottles side by side representing CeraVe vs Cetaphil comparison product-reviews

CeraVe vs Cetaphil: which moisturizer is actually better?

Independent CeraVe vs Cetaphil comparison. Ceramides, niacinamide, INCI lists, clinical evidence and skin-type fit, with AAD and peer-reviewed sources.

April 16, 2026

Dropper bottle with golden serum on a clean surface, representing retinol skincare ingredients

Retinol for beginners: how to start without wrecking your skin

A science-backed guide to retinol. Which strength to pick, how to apply it, what to avoid, and why most people fail in the first month.

April 14, 2026

Serum bottle with laboratory flask, symbolising science-backed skincare ingredient research ingredients

Is niacinamide safe? What dermatology research actually says

Clinical evidence on niacinamide safety: 18 RCTs reviewed, adverse event rates, contraindications, pregnancy data, and concentration response curves.

April 12, 2026