Urea is mainly used in our perm products. It facilitates the perming process by allowing perm actives to easily penetrate the hair cuticles. However, Urea can have multiple uses in cosmetic products. When used in the formulation of skin care products, Urea is a humectant and increases the water content of the top layers of the skin. It also slows the loss of moisture from a product during use. Sometimes it functions as pH buffer and minimizes the change in the acid/base balance of a product when other ingredients are added to that product.