Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate. May Contain: CI 77891 ●
TL;DR. This ingredient is an antioxidant stabilizer used to slow rancidity, color shift, and odor change in oils, waxes, polymers, and finished formulas. It protects the formula rather than acting as a skin antioxidant benefit ingredient.
What does Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate. May Contain: CI 77891 do in a cosmetic formula?
This ingredient is an antioxidant stabilizer used to slow rancidity, color shift, and odor change in oils, waxes, polymers, and finished formulas. It protects the formula rather than acting as a skin antioxidant benefit ingredient.
Is Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate. May Contain: CI 77891 clean?
From a clean-beauty perspective, this ingredient has friction because it is a synthetic hindered phenolic antioxidant related to the same stabilization category as debated synthetic formula protectants. It is generally used at very low levels and is not known as a common sensitizer, but it is not a clean-standard staple.
Is Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate. May Contain: CI 77891 sustainable?
This material is typically petrochemical-derived and has low water solubility with limited ready biodegradability data, so its environmental profile is less aligned with low-persistence design. Its role is formula preservation and shelf-life extension, but the sourcing and end-of-life story are not especially strong.
Is Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate. May Contain: CI 77891 COSMOS-approved?
This ingredient is not typically permitted under COSMOS-natural or COSMOS-organic standards. It has weak Green Chemistry alignment because it is synthetic, not readily renewable, and not clearly readily biodegradable, even though it can help reduce product waste by slowing oxidation.
How does Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate. May Contain: CI 77891 work chemically?
The molecule is a high-molecular-weight, sterically hindered phenolic antioxidant that donates hydrogen to interrupt free-radical oxidation chains in lipid and polymer phases. It is oil-dispersible, used at low stabilizing levels, and is generally chosen for heat and oxidative stability rather than water-phase performance.
Last updated 2026-05-13