Caprylhydroxamic acid is an amino acid (organic compounds that are essential building blocks of life) derived from coconut oil.
It’s a gentle preservative that ensures product safety. We use caprylhydroxamic acid in combination with caprylyl glycol and glycerin to provide gentle, broad spectrum antimicrobial preservation in some of our products.
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 Caprylhydroxamic Acid Caprylyl Glycol with a score of 1.