Lactic Acid
乳酸
Also known as: AHA
What it does
- Gentle chemical exfoliation
- Hydrating while exfoliating
- Brightening
Effective concentration
Minimum 5% Optimal 10% Maximum Beneficial 30% (professional)
Gentler than glycolic. Good entry-level AHA.
Evidence
Strong evidenceWell-established AHA with humectant properties.
Skin types
Well suited for: Dry Sensitive Normal
Use with caution: Very Sensitive
Gentlest AHA, good for dry/sensitive skin.
Helps with
Dullness Uneven Texture Dark Spots & Hyperpigmentation Dryness
Interactions
Use with care Retinol
Using together increases irritation risk. Alternate nights.
Irritation potential
Low To Medium
Comedogenic rating
0 / 5
Pregnancy
Generally considered safe during pregnancy
Low concentrations (under 10%) generally considered safe.
Good to know
Best AHA for sensitive/dry skin due to humectant properties. Always use SPF.
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Analyze a productEducational information only — not medical advice. Always patch test and consult a dermatologist for skin concerns.