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The ingredient, explained

Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate

A published safety assessment explicitly covers PENTAERYTHRITYL TETRA-DI-T-BUTYL HYDROXYHYDROCINNAMATE.

Antioxidant
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Ingredient guide

What it is and what it does

Benzenepropanoic acid, 3‚5-bis-1‚1-dimethylethyl--4-hydroxy-, 2‚2-bis[[3-[3‚5-bis-1‚1-dimethylethyl--4-hydroxyphenyl]-1-oxopropoxy] methyl]-1‚3-propanediyl ester

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

Antioxidant
Limits oxidation, including deterioration of formulation ingredients. This label alone does not show a clinical antioxidant effect in skin.

Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

A closer look

What the research shows

Safety assessment

The panel evaluated dermal absorption, human sensitization and animal toxicity and accepted the described cosmetic antioxidant uses.

What this does not tell us

Published safety assessment, not an efficacy trial. Its conclusion is limited to the reported cosmetic uses and concentrations, and relies partly on group read-across where individual data are missing. It does not establish current regulatory status or guarantee tolerance for every formulation. Antioxidant here describes preservation of cosmetic formulation; human anti-aging efficacy is not established.

Sources for this summary. DOI 10.1177/1091581818803326 ↗

Research review checked Oct 1, 2026

Read exact local candidate abstracts first; select identity-relevant papers; targeted primary PubMed/publisher searches. This is not an exhaustive systematic review.

Ingredient research is not proof that a product containing this ingredient works.

Read the 1 selected study

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Products containing this ingredient

All 112 products ↗

From the Serenfold edit. Linked by the ingredient list, without an efficacy ranking.

Names and identifiers

Registry identity

Benzenepropanoic acid, 3‚5-bis-1‚1-dimethylethyl--4-hydroxy-, 2‚2-bis[[3-[3‚5-bis-1‚1-dimethylethyl--4-hydroxyphenyl]-1-oxopropoxy] methyl]-1‚3-propanediyl ester

INCI name on ingredient lists
PENTAERYTHRITYL TETRA-DI-T-BUTYL HYDROXYHYDROCINNAMATE
CAS registry number
6683-19-8
EC number
229-722-6
Other recorded names (1)
  • PENTAERYTHRITYL TETRA-DI-T-BUTYL HYDROXYHYDROCINNAMATE [+/-

Sources for this ingredient record