FAQs
 
 
 
 
What is the maximum safe use level for Tenox TBHQ antioxidant in cosmetic/personal care products?
 
The Cosmetic, Toiletry, and Fragrance Association (CTFA) Cosmetic Ingredient Review (CIR) panel have reviewed the safety of t-butyl hydroquinone. They concluded that “t-butyl hydroquinone may be safely used as a cosmetic ingredient at concentrations not to exceed 0.1 percent” (J. Am. Coll. Toxicol. 10(1), 1991).