What Glycolic Acid does
It dissolves the bonds holding dull surface cells together, so skin sheds them faster. Over time that means smoother texture and brighter tone.
Its very small molecular size means deeper, faster penetration than lactic or mandelic acid — more results, more irritation.
Worth using if…
- Dullness and rough texture
- Sun-damaged skin
- Uneven tone on non-sensitive skin
Safety & watch-outs
- Increases sun sensitivity — daily SPF is required.
- Deeper skin tones should be cautious with high-strength peels; irritation can leave pigmentation behind.
- Do not layer with retinoids on the same night when you are starting out.
Glycolic Acid in pregnancy: Ask your doctor
Low-strength AHAs are generally viewed as lower concern than retinoids or high-strength salicylic acid, but peels are a different question. Ask your clinician.
Fungal acne (): does not feed it
AHA — not a fatty acid. The fungal-acne yeast feeds on fatty acids roughly C11–C24 and the esters built from them, so what matters in a finished formula is the whole list, not one ingredient.
Check a whole formula for malassezia triggers →Comedogenic rating: 0/5 · non-comedogenic
Non-comedogenic. Ratings come from the published Fulton scale, which was measured on rabbit ears rather than human faces — treat it as a rough signal, not a verdict on a finished formula.
Check a whole formula for pore cloggers →Common questions
Glycolic or lactic acid?
Lactic is gentler and more hydrating; glycolic is stronger and faster. Start with lactic if your skin is reactive.
Informational only, not medical advice. Written from public regulatory and dermatology references (EU Cosmetics Regulation annexes, SCCS opinions, CIR reviews, published Fulton-scale data). Concentration, formula and your own skin all change the outcome — consult a clinician for personal concerns.
Related ingredients
All ingredient explainers
AllantoinAlpha ArbutinAvobenzoneAzelaic AcidBakuchiolBenzoyl PeroxideCentella Asiatica ExtractCeramidesCoconut OilDimethiconeGlycerinL-Ascorbic AcidLactic AcidNiacinamidePanthenolPeptidesRetinolSalicylic AcidSodium HyaluronateSqualaneTitanium DioxideTranexamic AcidUreaZinc Oxide