Trihydroxystearin is the triester of glycerin and hydroxystearic acid. It is used as a skin conditioning agent, solvent and viscosity regulator in cosmetic formulations in concentrations of up to 5%(1-2).
(1) Bährle-Rapp, M. (2012). Springer Lexikon Kosmetik und Körperpflege (Springer Encyclopedia of Cosmetics and Personal Care). 4th revised and expanded edition. Springer(2) Andersen FA (ed). Final Report on the Safety Assessment of Trihydroxystearin. Int J Toxicol. 2000;19(Suppl 1):89-94.
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