Functions both as an emollient and co-emulsifier. It is a light yellow liquid used in personal care formulations for its function as both an emollient and co-emulsifier. It serves as a smooth, dry feeling emollient able to assist the skin in replenishing its natural moisture. Also, Isostearic Acid when neutralized serves as an extremely effective and stable co-emulsifier used in the preparation of Oil in Water, low viscosity emulsion systems. When incorporated in a formulation in place of stearic acid, it reduces the fatty feel to a non-fatty feel.