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Sorbeth-30 Tetraisostearate

What Sorbeth-30 Tetraisostearate is & what it does

Sorbeth-30 Tetraisostearate is a synthetic ester made by reacting ethoxylated sorbitol with isostearic acid. In cosmetic and sunscreen formulas it functions as an emollient and as a solubilizer or emulsifier, helping to blend oily and water-loving ingredients into a smooth, stable product. Its oily, spreadable texture also contributes to a softer, more cushioned skin feel.

What does Sorbeth-30 Tetraisostearate do in skincare?

Sorbeth-30 Tetraisostearate works as an emollient and as a solubilizer or emulsifier. It helps blend oil-based and water-based ingredients into a smooth, stable formula and adds a soft, cushioned skin feel. In sunscreens it can help keep UV filters and other oily components evenly dispersed.

Is Sorbeth-30 Tetraisostearate comedogenic?

There is limited public comedogenicity data specific to this ester, so a firm rating cannot be given. It is an oily, large-molecule ingredient used at modest levels, and how a product behaves on acne-prone skin depends on the full formula. If you are sensitive to richer textures, patch testing is reasonable.

Is Sorbeth-30 Tetraisostearate natural or synthetic?

Sorbeth-30 Tetraisostearate is synthetic. It is made by reacting ethoxylated sorbitol with isostearic acid, a fatty acid that can be plant or animal derived. The result is a manufactured ester designed for consistent cosmetic performance.

Sunscreens with Sorbeth-30 Tetraisostearate

We rate 9 sunscreens that contain it:

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