TBHQ is a synthetic antioxidant used to prevent fats and oils from going rancid, thereby extending the shelf life of products. It is commonly found in processed foods and some cosmetic formulations. Its primary role is to stabilize ingredients susceptible to oxidation.
NoneAntioxidantVeganEvidence: Medium
BenefitNone 0 / 4
RiskModerate 1.5 / 4
Irritation
Systemic exposure
Sensitization
Rated by SpottyLabs' ingredient methodology, independent of brands.
Things to watch
Potential for skin irritation in sensitive individuals
Possible endocrine disruption concerns at high levels
Spot questionable ingredients in seconds
SpottyLabs scans any skincare product and rates every ingredient for benefit, risk and safety. Free and independent — no brand is paying us.
In cosmetics, TBHQ acts as an antioxidant to prevent the degradation of oils and fats, which helps maintain product stability and extend shelf life.
Is TBHQ safe for skin?
TBHQ is generally considered safe for topical use in cosmetics at low concentrations. However, some individuals with sensitive skin may experience irritation.
Spotty Labs