Organopolysiloxane compounds have been widely used in special products such as skin care, hair care, beauty products and antiperspirants and deodorants. Through a large number of long-term physiological, toxicological and genetic experiments, people have confirmed that some organopolysiloxane compounds are safe, reliable and have excellent properties. For example, they are light-transmitting and anti-ultraviolet, physiologically inert, non-toxic, no odor, and have good properties. Surface activity, these characteristics make organopolysiloxanes more and more widely used in cosmetics. Polysiloxane compounds have many outstanding advantages when used in personal skin care products. Someone compared with a variety of ingredients commonly used in personal care products (Vaseline, white oil, etc.), and found that the viscosity of methyl polysiloxane is 315 × 10-4 (m2 / s). The three aspects of sex and flexibility are the best, and silicone skin care will not block the pores on the skin surface, which can reduce the occurrence of acne. Introducing other functional groups into the polysiloxane molecule can obtain a variety of modified polysiloxanes with better properties. Polyether modified polysiloxane has good surface activity in organic systems or in water. By reducing the surface tension of the liquid, it can play a variety of functions such as wetting and softening. It can also be antistatic, enhance air permeability, and When other cosmetic components are mixed, they can reduce the irritation of the components to the skin and eyes, and are widely used in beauty cosmetics. Adding 0.5% to 1% of polyether-modified polysiloxane in the degreasing detergent can increase the elution rate of oil stains by nearly 30%. Amino-modified polysiloxane with a certain ammonia value can be made into a transparent shampoo with appropriate anionic surfactants. Adding a small amount of amino silicone oil to toothpaste can form a hydrophobic and stable film on the tooth surface, which can effectively prevent tooth staining caused by smoking and caries caused by organic acids, and improve oral hygiene.