BHT
Synthetic antioxidant preservative. Protects oils and other lipid formula components from rancidity. Used in microdoses in cosmetics.
Protection
Evidence by route
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.
Tolerability and safety
Irritation potential
LowAllergen risk
LowPregnancy
SafeSkin types
Suitable for
OilyDrySensitiveCombinationNormal
Frequently asked questions
Is BHT safe during pregnancy?
BHT is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is BHT for?
BHT suits: oily, dry, sensitive, combination, normal.