The Index · Antioxidant stabilizer
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Pentaerythrityl Tetra-Di-t-Butyl Hydroxyhydrocinnamate
Hindered phenolic antioxidant (Tinuvin/Irganox-type) that protects oils and formula color.
FunctionalFunctional ingredient, not graded for skin benefits
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Hindered phenolic antioxidant (Tinuvin/Irganox-type) that protects oils and formula color.
What it does
Stabilizes lipids and fragrances against oxidation; not positioned as a skin antioxidant active like tocopherol vitamin claims.
The evidence
Functional ingredient (not graded for skin benefits): Established industrial/cosmetic antioxidant; skin “anti-aging” claims would be overreach. Credible chemical identity and cosmetic-use context come from CIR/SCCS/manufacturer INCI definitions and databases such as SpecialChem/PubChem[1].
How to use it
Expect this as a supporting INCI line item unless labeled as a featured active.
What it does in the formula
Functional ingredient — not graded for skin benefits
Hindered phenolic antioxidant (Tinuvin/Irganox-type) that protects oils and formula color.[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]SpecialChem. SpecialChem INCI profile: Pentaerythrityl Tetra-Di-t-Butyl Hydroxyhydrocinnamate. SpecialChem (2024)other
- [2]Cosmetic Ingredient Review. Hindered phenols context. CIR (2014)regulator
Revision history
18 Sept 2026Drafted by botTheSkindex Desk