The Expert Panel for Cosmetic Ingredient Safety (Panel) assessed the safety of 44 monoglyceryl monoesters that are structurally constituted as the esterification products of glycerin and carboxylic acids (the majority of which are fatty acids); 36 of these monoesters were previously reviewed by the Panel, and 8 are reviewed herein for the first time. Most of the monoglyceryl monoesters have several reported functions in cosmetics, but the most common function among the ingredients is skin conditioning agent; a few are reported to function only as surfactant–emulsifying agents. The Panel reviewed relevant new data, including frequency and concentration of use and considered the data from previous Cosmetic Ingredient Review reports. The Panel concluded that these ingredients are safe in cosmetics in the present practices of use and concentration described in this safety assessment.
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