The silicone oil products commonly used in cosmetics mainly include dimethyl silicone oil, methyl phenyl silicone oil, annular silicone oil, hydroxyl silicone oil, polyether silicone oil and long chain alkyl modified silicone oil. The outstanding properties of silicone oil used in cosmetics are mainly waterproof, lubricating, spreading, film forming and compatibility. Silicone oil has low surface tension, good lubrication on the skin, combined with the appropriate viscosity, so that the other components of cosmetics are easy to disperse and form a fine, uniform skin protective film on the skin, prevent skin dryness, wrinkles, but also to ensure the normal breathing of the skin and treat dermatitis and eczema. The protective film can also extend the role of active ingredients in cosmetics, effectively extend the role of nutrition cream and medicine cream, silicone oil hydrophobicity so that cosmetics added with silicone oil will not be easily lost due to washing or sweating. Silicone oil and most of the cosmetic additives have a good compatibility, good compatibility and compatibility so that the formula of cosmetics has a greater choice, easy to develop different types of advanced cosmetics. The viscosity of silicone oil, so that it can cooperate with petroleum jelly, paraffin, beeswax, lanolin, etc., to obtain non-sticky products.