INCI · other · CIR review pending · used in 57 products
Tromethamine
Tromethamine (INCI: Tromethamine; CAS 77-86-1) is a small helper ingredient used in cosmetic formulations primarily to regulate and stabilize product pH. It has an alkaline pH and is used to neutralize acidic ingredients. Its chemical name is 2-Amino-2-(hydroxymethyl)-1,3-propanediol, and it carries a Cosmetic Restrictions classification of III/61.
Evidence level
strongEWG score
—Comedogenic
—Category
other● Benefits
Tromethamine helps set and maintain the correct pH of cosmetic formulations by acting as an alkaline buffering and masking agent. By neutralizing acidic components, it ensures product stability and optimal performance of other ingredients.
buffering
● Cautions
