It is an all-natural multi-functional ingredient system for preservative-free and self-preserving cosmetics. It is a skin conditioning agent, emollient, and emulsifier.
The Environmental Working Group (EWG's) Skin Deep is the world's largest personal care product safety guide. They rate ingredients according to their hazard score on a 0-10 scale from low to high hazard. For example, they give water a score of 0.
Accordingly they have rated Glyceryl Undecylenate with a score of 2.