Butylated Hydroxytoluene

BHT

Data confidence:High

Function

Antioxidant

EWG Safety Score

7/10High concern

About this ingredient

BHT is a synthetic antioxidant used in cosmetics and personal care products to prevent oxidative degradation of oils, fats, and other susceptible ingredients. It extends product shelf life and maintains stability without providing direct skin benefits. BHT is particularly effective in anhydrous or low-water formulations.

Found in 2+ sunscreens