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POLYHYDROXYSTEARIC ACID

Description

Polyhydroxystearic acid is a versatile and effective ingredient in skincare formulations, particularly in oil-based products and sunscreens. This synthetic polymer is derived from stearic acid, a naturally occurring fatty acid, and undergoes a process of hydroxylation and polymerization. Its primary function is as a dispersing agent and stabilizer, helping to maintain the uniform distribution of particles within a formulation.

In sunscreens, polyhydroxystearic acid plays a crucial role in preventing the agglomeration of inorganic UV filters such as zinc oxide and titanium dioxide. This ensures even coverage and optimal sun protection. The ingredient also contributes to the smooth application and improved aesthetics of sunscreen products, reducing the white cast often associated with mineral sunscreens.

Polyhydroxystearic acid exhibits emollient properties, enhancing the skin feel of products and providing a silky, non-greasy texture. It is compatible with a wide range of cosmetic ingredients and can improve the stability and shelf life of formulations. While generally considered safe for topical use, it is always advisable to patch test new products containing this ingredient, especially for individuals with sensitive skin.