Back to Ingredient Dictionary

TBHQ

Description

TBHQ, or tert-Butylhydroquinone, is a synthetic antioxidant commonly used in cosmetic and skincare formulations. This potent preservative helps extend the shelf life of products by preventing oxidation of oils and fats, which can lead to rancidity and degradation of active ingredients. TBHQ is particularly effective in oil-based formulations and emulsions.

In skincare, TBHQ typically appears in concentrations of 0.1% or less. Its primary function is to maintain product stability and efficacy over time, ensuring that the beneficial ingredients remain active throughout the product's intended lifespan. TBHQ also indirectly contributes to skin health by preventing the formation of potentially irritating compounds that can result from oxidized ingredients.

While TBHQ is generally recognized as safe by regulatory bodies, including the FDA, some concerns have been raised about its potential as a skin sensitizer in certain individuals. As with any preservative, patch testing is recommended for those with sensitive skin or a history of allergic reactions. It's worth noting that TBHQ is not a natural ingredient, which may be a consideration for consumers seeking all-natural skincare options.