Glycine soja, also known as the wild soybean, is an annual plant in the legume family. Extracts from Glycine soja seeds are rich in amino acids, protein, vitamins, and minerals. In cosmetics and personal care products, Glycine soja protein functions as a skin and hair conditioning agent. It can be used in both skin and hair care products to improve moisture retention and provide nourishment.  It also provides hair with a beautiful glossy, shiny look.

Studies have also found that Glycine soja protein can inhibit the formation of proteinases, enzymes that breakdown proteins. It is thought that Glycine soja protein can prevent degradation of the proteins collagen and elastin in the skin. Since collagen and elastin are responsible for maintaining skin strength and elasticity, Glycine soja protein may provide an anti-aging effect when applied to the skin. There is also research suggesting that Glycine soja protein can promote hair growth. For this reason, Glycine soja protein is used in hair care products to improve texture and strengthen hair that has been damaged