Tert-Butylhydroquinone
What is Tert-Butylhydroquinone?
Tert-Butylhydroquinone (TBHQ) is a synthetic phenolic antioxidant primarily used as a preservative in cosmetics and personal care products to prevent oxidation and rancidity of oils and fats. It functions by scavenging free radicals and inhibiting lipid peroxidation, thereby extending shelf life and maintaining product stability. In skincare, it appears infrequently and at low concentrations, often in formulations containing unsaturated lipids.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Antioxidant
Slows oxidation of oils, fragrances, and sensitive actives to improve shelf life and reduce rancidity or color change; sometimes also supports skin protection from oxidative stress.
Preservative
Protects the product from microbial contamination during storage and use, helping maintain safety, stability, and shelf life.