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Octadecyl Di-T-Butyl-4-Hydroxyhydrocinnamate

What Octadecyl Di-T-Butyl-4-Hydroxyhydrocinnamate is & what it does

Octadecyl Di-T-Butyl-4-Hydroxyhydrocinnamate is a hindered phenolic compound used in cosmetic formulas as an antioxidant. In skincare and sunscreen products its role is to protect the formula itself from oxidation, helping to preserve oils, fragrances, and other oxidation-sensitive ingredients. A notable property is that it functions as a stabilizer for the product rather than as an active skincare ingredient.

What does Octadecyl Di-T-Butyl-4-Hydroxyhydrocinnamate do in skincare?

It functions as an antioxidant whose main job is to protect the formula itself from oxidation. By guarding oils, fragrances, and other sensitive ingredients, it helps keep the product stable over time. It is a formulation stabilizer rather than a skincare active.

Is Octadecyl Di-T-Butyl-4-Hydroxyhydrocinnamate safe?

It is used as a stabilizing antioxidant at low levels in cosmetic and industrial formulas. As with any ingredient, overall safety depends on concentration and the finished product. If you have specific sensitivities, reviewing the full ingredient list or patch testing is advisable.

Is Octadecyl Di-T-Butyl-4-Hydroxyhydrocinnamate natural or synthetic?

It is a synthetic compound, a hindered phenolic antioxidant produced through chemical manufacturing. It is not obtained directly from a plant or animal source. Its structure is designed specifically for antioxidant stabilization.

Sunscreens with Octadecyl Di-T-Butyl-4-Hydroxyhydrocinnamate

We rate 12 sunscreens that contain it, showing the top 10 by overall score:

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