Lactic Acid
Lactic Acid is a humectant and skin conditioning ingredient. It’s in 722 products on Poliage, most often conditioner, exfoliant and lip. Avoid lists on Poliage that include it: none.
Updated October 22, 2026
In plain English
An acid found in fermented milk and made by fermentation. Adjusts pH and, at higher levels, loosens dead surface skin.
What it does
Contains Lactic Acid: buffering
Function listed in CosIng
Contains Lactic Acid: humectant
Function listed in CosIng
Contains Lactic Acid: skin-conditioning
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 34809, accessed October 22, 2026. Also listed as acidum lacticum and alpha hydroxy acid lactic.
Products that contain Lactic Acid
Fenty Beauty
Shake ’N Play Buildable Liquid Blush
Blush · Lists exfoliating acid, silicones
Cosmia
Shampoing à huile d’argan
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, coconut derivatives
Cosmia
Shampoing aux amandes
Lists fragrance, exfoliating acid, sulfates, silicones, coconut derivatives
Cosmia
Shampoing aux œufs
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, coconut derivatives
Cosmia
Shampoing technique color
Lists fragrance, exfoliating acid, sulfates, silicones, chemical UV filters, coconut derivatives
Cosmia
Shampoing technique force
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, coconut derivatives
Cosmia
Shampoing technique repair
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, coconut derivatives
Cosmia
Shampoing technique violet
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, coconut derivatives
PRAVANA
Shampoo
Shampoo · Lists fragrance, fragrance allergens, exfoliating acid, coconut derivatives
Sanex
Shampoo
Lists fragrance, exfoliating acid, sulfates, coconut derivatives
Cien
Shampoo 7 Kräuter
Lists fragrance, exfoliating acid, sulfates, coconut derivatives
Cien
Shampoo for men für normales Haar
Lists fragrance, sulfates, coconut derivatives
Cien
SHAMPOO HAIR FRUITS
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, coconut derivatives
Cosmia
SHAMPOOING et DOUCHE AU SEL MARIN
Lists fragrance, exfoliating acid, sulfates, coconut derivatives
Cien
Shampooing quotidien Fruits & Vitamines
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, coconut derivatives
Fekkai
Shea Butter Conditioner
Conditioner · Lists fragrance, fragrance allergens, drying alcohol, exfoliating acid, salicylic acid, coconut derivatives
Fekkai
Shea Butter Shampoo
Shampoo · Lists fragrance, fragrance allergens, exfoliating acid, salicylic acid, coconut derivatives
Thrive Causemetics
Sheer Strength Lip-Plumping Peptide Gloss
Lip · Lists fragrance, fragrance allergens, exfoliating acid, essential oils
Unilever
Shock, eau de glacier & menthe extrème
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, formaldehyde releasers, coconut derivatives
Unilever
Signal Bain de Bouche Antibactérien Integral 8 Nature Elements Fraîcheur Naturelle 500ml
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, coconut derivatives
Swiss Toniq Geneva
Silk Glove Hand Repair Oil
Lists exfoliating acid, essential oils
Ole Henriksen
Silkfoliant Gentle Tri-Acid Exfoliating Toner for Dark Spots
Toner · Lists fragrance, fragrance allergens, exfoliating acid, essential oils, salicylic acid
Skinfix
Skin Barrier Restoring Gel Cream
Moisturizer · Lists exfoliating acid
True Botanicals
Skin Barrier Sun Shield SPF 30
Sunscreen · Lists exfoliating acid, coconut derivatives
Related guides
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26 statements from the FDA, NHS and DermNet NZ about ingredients used together or in certain situations, each attributed, with no added advice.
Retinoids, AHAs and salicylic acid: what sources say
What DermNet NZ and the FDA say about retinoids, alpha hydroxy acids and salicylic acid: sun sensitivity, irritation, pregnancy and using them together.