Dimethicone is a type of silicone commonly used in cosmetics and personal care products. It acts as a skin protectant and moisturizer, providing a smooth, silky feel. Dimethicone helps to create a barrier on the skin, preventing moisture loss and improving the texture of creams and lotions. In addition to its use in skincare, dimethicone is also found in hair care products. It helps to reduce frizz and adds shine by coating the hair strands. This ingredient is generally considered safe for use and is often included in formulations for its emollient properties.