Ingredients

Evidence-reviewed skincare ingredients. What they do, how to use them, and whether they actually work.

Not medical advice. Content is based on personal experience and published research. Always consult a qualified dermatologist before starting any new treatment or regimen.

Concern

Verdict

Evidence

Editor Tried

Acne & Sensitive Skin

Hypochlorous Acid (HOCl)

Evidence: Moderate

A low-drama antimicrobial calming spray.

Antioxidants

Astaxanthin

Evidence: Emerging

A carotenoid with better ingestible data.

Worth Exploring

Resveratrol

Evidence: Emerging

Promising antioxidant, still not foundational.

Rosehip Oil

Evidence: Moderate

A nourishing oil, not a scar cure.

Worth Exploring

Vitamin E (Tocopherol)

Evidence: Moderate

A supportive antioxidant and emollient.

Worth Exploring

Exfoliants

Glycolic Acid

Evidence: Strong

The strongest common AHA.

Lactic Acid

Evidence: Moderate

Gentler AHA with hydration overlap.

Mandelic Acid

Evidence: Moderate

Slow AHA often better tolerated.

PHAs — Gluconolactone & Lactobionic Acid

Evidence: Moderate

The gentlest exfoliant category.

Worth Exploring

Salicylic Acid

Evidence: Strong

The oil-soluble pore clearer.

Hydration, Barrier & Microbiome

Beta-Glucan

Evidence: Emerging

A soothing hydrator with repair logic.

Centella Asiatica / Madecassoside (Cica)

Evidence: Moderate

The calming K-beauty workhorse.

Ceramides, Cholesterol & Fatty Acids

Evidence: Strong

The barrier-repair lipid trio.

Ectoin

Evidence: Moderate

A stress-protection ingredient worth watching.

Worth Exploring

Hyaluronic Acid

Evidence: Moderate

A hydration binder, not a filler.

Panthenol (Pro-Vitamin B5)

Evidence: Strong

A simple barrier-support ingredient that earns its place.

Polyglutamic Acid (PGA)

Evidence: Emerging

A humectant with more marketing than evidence.

Postbiotics & Fermented Ingredients

Evidence: Emerging

Microbiome marketing needs receipts.

Snail Mucin (SCSM)

Evidence: Moderate

Hydrating, soothing, not scar-erasing magic.

Squalane

Evidence: Emerging

A lightweight seal for hydration.

Urea

Evidence: Strong

The unsexy dry-skin workhorse.

Peptides, Firming & Growth Factors

Argireline (Acetyl Hexapeptide-3)

Evidence: Moderate

Expression-line softener, not Botox.

Worth Exploring

Biomimetic & Multi-Peptide Complexes

Evidence: Emerging

Potentially useful, often impossible to audit.

Worth Exploring

EGF, Growth Factors & Mimetics

Evidence: Moderate

Interesting, expensive, evidence-limited.

Worth Exploring

GHK-Cu (Copper Peptides)

Evidence: Moderate

Repair-signalling peptide with real caveats.

Worth Exploring

Matrixyl (Palmitoyl Pentapeptide-4)

Evidence: Moderate

The classic collagen-signal peptide.

Worth Exploring

Peptides (Overview)

Evidence: Moderate

Useful support, not injectable-level lifting.

Worth Exploring

Pigmentation & Brightening

Alpha Arbutin

Evidence: Moderate

A gentler tyrosinase-targeting brightener.

Azelaic Acid

Evidence: Strong

The underrated active for redness, acne and pigment.

Ferulic Acid

Evidence: Moderate

The stabiliser behind stronger antioxidant formulas.

Glutathione

Evidence: Emerging

Overmarketed for skin whitening.

Kojic Acid

Evidence: Moderate

Effective in theory, irritating in practice.

Licorice Root Extract

Evidence: Moderate

A soothing brightener with uneven standardisation.

Niacinamide

Evidence: Strong

Barrier-supporting brightener with unusually broad use.

Tranexamic Acid (TXA)

Evidence: Moderate

A pigmentation calmer, not a bleach.

Vitamin C (L-Ascorbic Acid)

Evidence: Strong

A proven antioxidant that is formulation-sensitive.

Protection

Zinc Oxide / Mineral SPF

Evidence: Strong

The non-negotiable pigment and aging step. For melasma or pigment-prone skin, look for a tinted, iron-oxide mineral formula specifically - plain (white-cast) mineral SPF blocks UV but not visible light, which is a separate, documented melasma trigger.

Retinoids

Adapalene

Evidence: Strong

The acne retinoid that behaves better.

Bakuchiol

Evidence: Moderate

Retinol-adjacent, not retinol-equivalent.

Retinal (Retinaldehyde)

Evidence: Moderate

One step closer to retinoic acid.

Retinol

Evidence: Moderate

The classic OTC retinoid.

Tretinoin

Evidence: Strong

The prescription retinoid with the receipts.

Supplements & Ingestibles

Collagen (Oral / Ingestible)

Evidence: Moderate

More plausible than topical collagen, still not magic.

Targeted

Caffeine

Evidence: Emerging

Good for puffiness, not all dark circles.

The Debunk Shelf

CBD / Cannabidiol (Skincare)

Evidence: Emerging

Regulatory and evidence caveats, not a miracle calmer.

Colloidal Gold

Evidence: Limited

Luxury sparkle with weak skin-benefit evidence.

Crystal-Infused Skincare

Evidence: Emerging

No credible skin mechanism.

Oxygen-Infused Skincare

Evidence: Emerging

Oxygen claims are usually marketing fog.

Plant Stem Cells

Evidence: Limited

Plant cells cannot become human skin cells.

Volume, Plumping & Regenerative

Collagen (Topical)

Evidence: Emerging

Hydrates; does not rebuild lost collagen.

Exosomes

Evidence: Emerging

Promising clinic category, messy consumer category.

Worth Exploring

PDRN (Polydeoxyribonucleotide)

Evidence: Moderate

Regenerative science, topical marketing problem.

Worth Exploring

Volufiline (Sarsasapogenin)

Evidence: Emerging

Facial fat-growth claims are not proven.

Worth Exploring