Water in Silicone Emulsifiers

Water-in-silicone (W/Si) emulsifiers appear as milky liquids, gels, or fine dispersions. These specialized emulsifiers enable the formulation of high-performance, water-resistant creams and lotions with a smooth, lightweight texture. They provide excellent stability, a silky after-feel, and improved spreadability, making them ideal for sunscreens, foundations, and long-wear skincare. 

Popular INCI ingredients in this segment include PEG-10 Dimethicone and Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone. As hybrid beauty trends grow, W/Si emulsifiers are increasingly used in multifunctional products. Regulatory considerations around PEG-containing emulsifiers may apply in certain markets focused on clean beauty.