What it is
This material is a polyol ester produced by reacting pentaerythritol with a combination of stearic, capric, caprylic, and adipic acids. The blend yields a soft, semi-solid emollient that conditions skin and gives formulas a smooth, structured feel. It is often chosen in cushion sunscreens and makeup to help bind pigments and carry oil-phase components while contributing a pleasant skin feel.
Safety & warnings
Pentaerythrityl ester blends of this kind are generally well tolerated and are not recognized fragrance allergens. Being a richer fatty ester it can feel occlusive at high levels, which acne-prone users may wish to consider, but it is broadly used without notable sensitization concerns.
Origin & sourcing
Synthetic. It is made by esterifying pentaerythritol with a defined mix of fatty and dicarboxylic acids, whose feedstocks may be plant- or petroleum-derived.
Questions everyone asks
What is the role of this ingredient?
It is an emollient that softens and conditions skin and helps bind pigments and structure the oil phase of a formula.
How does it differ from the adipate/caprate/caprylate/heptanoate version?
It uses a slightly different mix of acids, including stearic acid, which tends to make it a richer, more cushioning emollient.