PoreIQExfoliants & acne · Exfoliating acids
Lactic Acid
A gentler alpha hydroxy acid that exfoliates while also helping the skin hold on to water.
- Also listed as
- AHA
- Best for
- Dry skin · Beginners to acids · Dullness
- When to use
- PM
- Pairings
- 1 combinations checked
What it is
Lactic acid is a larger AHA than glycolic acid, so it absorbs more slowly and tends to be less irritating. It also has humectant properties, which makes it a common first acid for dry or sensitive skin.
Benefits
- Gentle surface exfoliation
- Hydrating as well as exfoliating
- Brighter, softer-feeling skin
Watch-outs
- Still increases sun sensitivity
- Can sting on broken or very sensitive skin
How to use it
Use at night 2–3 times a week, then moisturize. Avoid the same night as retinoids or other acids.
Can you mix lactic acid with…
Frequently asked questions
What does lactic acid do for skin?
A gentler alpha hydroxy acid that exfoliates while also helping the skin hold on to water.
Is lactic acid gentler than glycolic acid?
Generally yes. Its larger molecule absorbs more slowly, so most people find it less irritating.
Similar ingredients
General cosmetic information, reviewed against public guidance such as the American Academy of Dermatology. Patch test new products. For medical concerns, see a dermatologist. Last updated 2026-10-22.