A very efficient HASE (Hydrophobically-modified Alkali Soluble Emulsion) thickener / rheology modifier for difficult-to-thicken surfactant systems, such as, amino acid surfactants or other sulfate-free shampoos and exhibits efficient suspending capabilities in high viscosity formulations. It is typically used in a variety of applications, such as, shampoo, body wash, shower gel, skin cleanser, face cleanser, and hair gels. INCI: Acrylates/Steareth-20 Methacrylate Crosspolymer.