What it is
Glycine Soja Sterols consists of phytosterols isolated from soybean oil, lipid molecules structurally related to the sterols found in skin. In formulations they are valued for their emollient feel and their ability to help reinforce the lipid barrier, contributing to a smoother, more supple skin surface. They can also assist in stabilizing emulsions and improving the spreadability of a product.
Safety & warnings
Plant sterols are generally well tolerated and are not associated with significant irritation at cosmetic use levels. People with soy allergies may wish to be aware of soy-derived ingredients, though highly purified sterol fractions contain little to no protein. It is considered low on the comedogenicity scale.
Origin & sourcing
Naturally derived from the soybean plant (Glycine soja), obtained as a sterol fraction separated from soybean oil.
Questions everyone asks
What does Glycine Soja Sterols do in a sunscreen?
It acts as an emollient and skin-conditioning agent, helping soften the skin and support its lipid barrier while improving the texture of the formula.
Is it safe for people with soy allergies?
Purified sterol fractions contain little to no soy protein, but those with soy sensitivities may prefer to patch test or consult the full ingredient list.