ABSTRACT
Today’s consumers expect high-performance as well as multifunctional and safe products. Cosmetic products must deliver more attributes today than ever before. They must moisturize, protect skin from sun damage, provide the best possible emolliency, and have appealing tactile properties. Nylon microspheres (orgasol) have been used for many years in makeup and skin-care products because of their spheroid structure. Polyamides have a good resistance to many solvents, such as chlorinated solvents, aliphatic hydrocarbons, aromatic solvents, alkali, and acid. In addition, in principle, the polyamides are very inert and therefore suitable for use with a large variety of active ingredients. Polyamide powders and especially Orgasol have a porous structure which is very profitable for the formulator, which seeks a delivery system for active ingredients. Impregnation is a combination of the two previously described phenomena: adsorption and absorption.
