Glyoxyl-diureide,
Comfrey root extract.
White, odorless, tasteless crystals or powder.
Allantoin relieves the skin irritation caused by soaps and detergents, acids, and alkalies in oral and skin care products.
It is said to promote wound healing and tissue formation, but is not recognized for that by regulatory agencies.
allantoin: InChI=1/C4H6N4O3/c5-3(10)6-1-2(9)8-4(11)7-1/h1H,(H3,5,6,10)(H2,7,8,9,11)/f/h6-8H,5H2