Glyceryl Mono Undecylenate is an ester of glycerin and undecylenic acid, which combines the moisturisation from glycerine along with the antimicrobial properties of undecylenic. Glyceryl Mono Undecylenate is a 100% vegetable ingredient that offers skin re-fatting for ultimate moisturzation. It perform an important function to enhance the working ability of Cosmetic products as an cosmetic ingredient. Glyceryl Mono Undecylenate is a penetration enhancer we recommend that it only be used with natural, skin safe, ingredients as it may enhance the penetration levels of other ingredients, as well. It also offers protection against Gram-positive and Gram negative bacteria, fungi, yeast and mold. Unlike some other common organic salts.