The Index · Antioxidant
BHT
BHT
BHT is a synthetic antioxidant used to protect oils and formulas from oxidation.
FunctionalFunctional ingredient, not graded for skin benefits
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BHT is a synthetic antioxidant used to protect oils and formulas from oxidation.
What it does
Supports the formula as a antioxidant line item on cosmetic labels.
The evidence
Functional ingredient (not graded for skin benefits): Conventional cosmetic INCI with established use context from CIR/SCCS/manufacturer definitions and INCI databases such as SpecialChem/PubChem[1].
How to use it
Expect this as a supporting INCI line item unless labelled as a featured active.
What it does in the formula
Functional ingredient — not graded for skin benefits
BHT is a synthetic antioxidant used to protect oils and formulas from oxidation.[1]
Safety & limits
Source and region, always
all — Used in cosmetics within conventional leave-on/rinse-off levels; see cited safety literature.[1] CA US EU UK
Sources · 2
Numbered as cited in the text
- [1]Cosmetic Ingredient Review. Cosmetic Ingredient Review safety assessment. CIR (2010)regulator
- [2]SpecialChem. SpecialChem INCI profile: BHT. SpecialChem (2024)other
Revision history
18 Sept 2026Drafted by botTheSkindex Desk