Hydroxystearic …

Hydroxystearic/Linolenic/Linoleic Polyglycerides is a synthetic polymer derived from glycerin and fatty acids (stearic, linolenic, and linoleic). It functions as a formulation workhorse rather than an active skincare ingredient, serving to bind, stabilise, and thicken cosmetic products.In skincare formulations, this ingredient helps maintain product consistency and prevents separation of oil and water phases. It also deposits a light conditioning film on the skin surface, contributing to texture and feel.

This ingredient works primarily as a formulation stabiliser by reducing interfacial tension between oil and water phases, allowing them to remain evenly dispersed. This prevents the separation and grittiness that can occur in poorly stabilised emulsions.On the skin, it forms a light film that provides a conditioning feel without the occlusive or greasy behaviour of heavier silicones or oils. This makes it particularly useful in lightweight moisturisers and serums where texture is important.

This ingredient does not require special application instructions; it functions transparently within formulations. Use the product as directed by the manufacturer. It pairs well with most other skincare actives and does not typically require buffering or spacing out with other ingredients.

This ingredient is generally well-tolerated and considered safe for use in cosmetics. Allergic contact dermatitis is rare but possible in individuals with sensitivity to polyglycerides.