Capryl Glycol is an anti-microbial agent and surfactant that is used in some cosmetics, and that has been thoroughly tested by the FDA to ensure that it is not toxic. Capryl Glycol is known to cause skin irritation in people with sensitive skin, explains Dr. Cynthia Bailey.
Capryl Glycol is also known as 1,2-Octanediol. A study into the effects of 1,2-alkenediols such as Capryl Glycol conducted by the Society of Cosmetic Scientists found that longer-chain 1,2-alkenediols such as 1,2-Octanediol are more likely to irritate the skin than shorter-chain 1,2-alkenediols such as 1,2-hexanediol. People with sensitive skin are advised to read the labels of any cosmetic products carefully before purchasing them, and to avoid potential irritants.