GlowScience HQ

Issue No. 14 — Spring 2026

The skincare reviews that read the label before they read the marketing.

Ingredient-first, bench-tested, and double-checked by board-certified dermatologists — we cut through the actives hype so you can spend on what actually performs on skin.

Browse Reviews How We Test

Independent & reader-supported. We buy every product we review.

Editorial flat-lay of skincare serums and droppers on a linen surface — Vol. 14 — Serums, Sunscreens & Bond-BuildersPlate 01

By the Numbers

Products tested in-lab: 1,284
Dermatologists consulted: 37
Ingredients tracked: 612
Retest cadence: Quarterly

Latest Reviews

Salicylic Acid vs Benzoyl Peroxide: Which Clears Acne Faster?

Salicylic Acid vs Benzoyl Peroxide: Which Should You Use? Both are the most clinically validated OTC acne treatments available. But they work through completely different mechanisms — and work best for different types o

Apr 1, 20261 min readingredient science

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How to Layer Skincare Products in the Correct Order

How to Layer Skincare Products in the Correct Order The order you apply skincare products directly affects how well they work. Apply them wrong and actives won't penetrate, occlusives block absorption, and you may be wa

Apr 1, 20262 min readbuying guides

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How to Get Rid of Hyperpigmentation: Complete 2026 Guide

How to Get Rid of Hyperpigmentation: The Complete Guide Hyperpigmentation — dark spots, post-inflammatory marks, melasma — is among the most searched skin concerns online. Here's what actually works and what the timelin

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Glycolic Acid vs Lactic Acid: Which AHA Should You Use?

Glycolic Acid vs Lactic Acid: A Direct Comparison Both are alpha hydroxy acids. Both exfoliate. But they behave differently on skin — and choosing the wrong one can lead to irritation or underwhelming results. Molecul

Apr 1, 20262 min readingredient science

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Tretinoin vs Retinol: Which Is More Effective and Who Should Use Each?

Tretinoin vs Retinol: The Complete Comparison Both tretinoin and retinol are vitamin A derivatives that increase skin cell turnover and stimulate collagen production. But they're not the same product, and choosing betwe

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How to Fix a Damaged Skin Barrier: Signs and Recovery Steps

How to Fix a Damaged Skin Barrier If your skin suddenly becomes sensitive to products it used to tolerate, feels tight and uncomfortable, or breaks out in rough patches — you likely have a compromised skin barrier. Wh

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AHA vs BHA vs PHA: Which Exfoliant Is Right for You?

AHA vs BHA vs PHA: Which Chemical Exfoliant Should You Use? Chemical exfoliation is one of the most effective tools in skincare — but the alphabet soup of AHA, BHA, and PHA trips up even experienced skincare enthusiasts

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Skincare Ingredients You Should Never Mix (And Why)

Skincare Ingredients You Should Never Mix Layering actives without understanding their interactions can reduce effectiveness, increase irritation, or — in some cases — cause real skin damage. Here's what to keep apart.

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Best Skincare Routine for Acne-Prone Skin: The Evidence-Based Approach

The evidence-based skincare routine for acne-prone skin using salicylic acid, benzoyl peroxide, niacinamide, and SPF — plus what to avoid and when to see a dermatologist.

Apr 1, 20265 min readskin concern guides

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Ingredient Layering Guide: What Not to Mix in Your Skincare Routine

Know which skincare ingredients to avoid using together — retinol and AHA, vitamin C and benzoyl peroxide — and which combos like niacinamide and vitamin C are actually safe.

Mar 31, 20262 min readingredient science

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Skin Barrier Repair Guide: Symptoms, Causes, and How to Fix It

Learn to identify a damaged skin barrier — tight, red, stinging skin — and follow the repair protocol: stop actives, use ceramides, and apply occlusives for 2 to 4 weeks.

Mar 30, 20262 min readskin concern guides

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Niacinamide: Complete Guide to Skincare's Most Versatile Ingredient

Niacinamide (vitamin B3) does it all — barrier repair, pore reduction, sebum control, dark spot fading — and is safe for every skin type. Here is everything you need to know.

Mar 29, 20262 min readingredient science

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