Polyhydroxystearic Acid

A soft and malleable amber wax naturally derived from vegetable sources. It allows minerals to be very finely dispersed, which can improve SPF, decrease the white cast in sunscreens, and increase the color expression in pigmented products.
Functions
Origin
Polyhydroxystearic Acid

Overview

Polyhydroxystearic acid is a soft and malleable amber wax that functions primarily as an emulsifier and a dispersing agent.

Naturally derived from vegetable sources, this ingredient is commonly used as a dispersant for the sunscreen minerals zinc oxide and titanium dioxide, as well as for pigments, such as iron oxides and mica. Polyhydroxystearic acid allows the minerals to be very finely dispersed, which can improve SPF and decrease the white cast in sunscreens and increase color expression in pigmented products.

This ingredient also works as an emulsifier – mainly in water-in-oil emulsions or as a supporting emulsifier in oil-in-water emulsions.