Retinol vs Peptides for Anti-Aging: Which Actually Works, and Should You Use Both?
Retinol vs peptides for anti-aging: what the clinical evidence really shows, how they compare on wrinkles and safety, and whether to use both.
Jun 25, 2026·
Guides
Comprehensive guides on exosome therapy, regenerative skincare treatments, and medical-grade skincare routines.
Best Evidence-Based Treatment for Perioral Dermatitis (and the Ingredients Making It Worse)
Evidence-based perioral dermatitis treatment: why topical steroids worsen it, what actually works (oral tetracyclines, pimecrolimus, azelaic acid).
Jun 25, 2026·
Vitamin C vs Niacinamide for Brightening, Dark Spots and Hyperpigmentation: What the Evidence Shows
Vitamin C vs niacinamide for dark spots, brightening and melasma: how each fades pigment, what the clinical evidence shows, safety, and which to pick.
Jun 25, 2026·
Which Skincare Actives You Should (and Shouldn't) Mix: An Evidence-Based Guide
An evidence-based guide to which skincare actives you can safely mix and which to separate, with honest research grading and a conflict-free routine.
Jun 25, 2026·
How Much Vitamin C and What Niacinamide Percentage Should You Use? Evidence-Based Concentration Guide
How much vitamin C serum and what niacinamide percentage you actually need, with the dosing studies behind 10-20% vitamin C and 4-5% niacinamide.
Jun 25, 2026·
Salicylic Acid vs Glycolic Acid (BHA vs AHA): Which Exfoliant Is Right for Your Skin?
Salicylic acid (BHA) vs glycolic acid (AHA): evidence-based guide to mechanisms, acne, pigment, safety, and which exfoliant fits your skin.
Jun 25, 2026·
Benzoyl Peroxide vs Salicylic Acid for Acne: Which One Should You Use?
Benzoyl peroxide vs salicylic acid for acne: how each works, what the evidence shows, side effects, and which to pick for your skin.
Jun 25, 2026·
Tranexamic Acid vs Hydroquinone for Melasma and Dark Spots: A Head-to-Head Evidence Comparison
Tranexamic acid vs hydroquinone for melasma: head-to-head trial data, mechanisms, side effects, and who each one is for. Evidence-graded, honest.
Jun 25, 2026·
Is Hydroquinone Safe? What the Evidence Says About the Gold-Standard Skin Lightener
Hydroquinone fades melasma and dark spots, but is it safe? An evidence review of cancer fears, ochronosis risk, the FDA rule, and alternatives.
Jun 25, 2026·
How Often Should You Actually Reapply Sunscreen? The Evidence (Including Over Makeup)
How often should you reapply sunscreen? The evidence on the 2-hour rule, applying enough, and reapplying over makeup with powder, spray, and stick.
Jun 25, 2026·
Sebaceous Filaments vs Blackheads: The Difference and What the Evidence Says You Can Actually Do
Sebaceous filaments vs blackheads: how to tell them apart and what salicylic acid, retinoids, and niacinamide can actually do, by the evidence.
Jun 25, 2026·
Closed Comedones: What Actually Works, According to the Evidence (Retinoids vs Salicylic Acid)
Closed comedones (whiteheads): what the evidence says about retinoids vs salicylic acid, plus adapalene, azelaic acid, routines, and safety.
Jun 25, 2026·
Best Evidence-Based Treatment for Keratosis Pilaris: Lactic Acid, Urea and Salicylic Acid Compared
Lactic acid, urea and salicylic acid for keratosis pilaris compared, with honestly graded clinical evidence, a results timeline and safety tips.
Jun 25, 2026·
Post-Inflammatory Erythema (PIE) vs Hyperpigmentation: How to Tell Them Apart and What Actually Fades Red Acne Marks
PIE vs PIH: use the press test to tell red acne marks from brown ones, plus the evidence-graded treatments that actually fade each.
Jun 25, 2026·
Fungal Acne (Malassezia Folliculitis): Evidence-Based Treatment and the Ingredients to Avoid
Fungal acne (Malassezia folliculitis) is treatable yeast, not acne. Evidence-based antifungal treatment, the misdiagnosis trap, and which ingredients to avoid.
Jun 25, 2026·
Is Coconut Oil Good for Your Face? The Comedogenicity Evidence
Coconut oil's comedogenicity rating comes from a rabbit-ear test. See what human studies actually show for acne, dry skin, and eczema.
Jun 24, 2026·
Does Drinking Water Improve Your Skin? What the Studies Show
Does drinking water improve your skin? We review the actual studies: small effects only in under-hydrated people, why moisturizer beats extra glasses.
Jun 24, 2026·
Does Skin Cycling Actually Work? A Dermatologist-Evidence Review
Does skin cycling work? An evidence review of the 4-night exfoliate-retinoid-recovery routine: honest grading, safety, and who it's for.
Jun 24, 2026·
Can You Mix Niacinamide and Vitamin C? The Myth, the Chemistry, the Evidence
The niacinamide and vitamin C 'don't mix' rule is a myth from 1960s lab chemistry. Here is the real chemistry, the evidence, and how to use both.
Jun 24, 2026·
Is Squalane Good for Your Skin? Benefits, Comedogenicity, and Evidence
Is squalane good for skin? An evidence review of benefits, comedogenicity, safety, and how it compares to other hydrators, with honest grading.
Jun 24, 2026·