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Ingredient · INCI reference

Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate

This is an antioxidant stabilizer that protects sunscreen formulas from oxidation and helps preserve their performance.

What it is

A hindered-phenol antioxidant used at low levels to protect a formula's oils and active ingredients from oxidation. By scavenging the radicals that cause rancidity and breakdown, it helps maintain product stability, color, and the performance of light- or air-sensitive actives.

Safety & warnings

Used at very low levels as a formula stabilizer and generally regarded as well tolerated.

Origin & sourcing

Synthetic hindered-phenol antioxidant.

Questions everyone asks

What does this ingredient do?

It is an antioxidant that protects the formula's oils and actives from oxidizing and breaking down.

Is it a skincare active?

No, it works behind the scenes to keep the product stable rather than treating the skin.

Sources & references

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