Synthetic antioxidant preservative. Protects oils and other lipid formula components from rancidity. Used in microdoses in cosmetics.
Topical application
CWeak evidence. In vitro data, open-label studies, or expert consensus.
The CIR deemed BHT safe at cosmetic concentrations up to 0.5%. Contact allergy is rare. Systemic toxicity concerns relate to food, not cosmetic, use.
Irritation potential
LowAllergen risk
LowPregnancy
SafeSuitable for
BHT is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
BHT suits: oily, dry, sensitive, combination, normal.
Synthetic antioxidant preservative.
The INCI name is BHT.
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