Fumaric Acid
Fumaric Acid is a buffering ingredient. It’s in 50 products on Poliage, most often shampoo, conditioner and cleanser. Avoid lists on Poliage that include it: none.
Updated October 21, 2026
In plain English
Fumaric acid: used to hold the pH steady.
What it does
Contains Fumaric Acid: buffering
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 33964, accessed October 22, 2026.
Products that contain Fumaric Acid
L’Oréal
Ultra Doux Shampooing réparation intense Érable Guérisseur
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, salicylic acid, coconut derivatives
Dermalogica
Ultracalming Cleanser
Cleanser · Lists coconut derivatives
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