CAS No. 97-59-6
EC No. 202-592-8
Synonyms 5-Ureidohydantoin; 5-Ureido-Hydantoin; Allantoin; Glyoxyldiureide; Paxyl; Urea, (2,5-dioxo-4-imidazolidinyl)-; Ureidohydantoin; (2,5-dioxo-4-imidazolidin-4-yl) urea; DL-Allantoin-5-13C,1-15N; Glyoxylic(acid) diureide; (2,5-Dioxo-4-imidazolidinyl)urea; Glyoxyldiureid; Hydantoin,5-ureido


​Allantoin is use​d as an active ingredient in a lot of cosmetics with several beneficial effects including: a moisturizing and keratolytic effect, increasing the water content of the extracellular matrix and enhancing the desquamation of upper layers of dead skin cells, increasing the smoothness of the skin; promoting cell proliferation and wound healing; and a soothing, anti-irritant, and skin protectant effect by forming complexes with irritant and sensitizing agents.

ALLANTOIN is frequently present in toothpaste, mouthwash, and other oral hygiene products, in shampoos, lipsticks, ant​i-acne products, sun care products, and clarifying lotions, various cosmetic lotions and creams, and other cosmetic and pharmaceutical products.

Shelf Life

Under proper storage conditions, the shelf life is 36 months

Health & Safety

Detailed information on the product described can be found in our relevant Health and Safety Information (Material Safety Data Sheet).