Silicone oil is a colorless, odorless and transparent liquid. It is one of the products with the lowest toxicity in cosmetics. It is non-irritating, non-allergic, non-stinging, and has a neutral reaction to human skin. It is an excellent material for modern cosmetics. There is a large distance between the molecules of silicone oil, the molecular force is much weaker than that of hydrocarbons, the surface tension is low, and it has high surface activity. Therefore, silicone oil has excellent defoaming and anti-foaming properties and good film-forming properties. It is easy to form a very thin film, which is used in cosmetics and applied to human skin, just like a very thin gauze mask, and achieves protection. skin effect. Silicone oil is hydrophobic and insoluble in water. Silicone oil has excellent isolation and lubricity from other substances, and has the performance of blocking moisture without affecting the ventilation. Has a high degree of radiance, adding light to the skin. Moreover, silicone oil has excellent compatibility with other cosmetic raw materials.