Polydimethylsiloxane is a kind of high molecular silicone compound, usually called organosilicon. Optically transparent, and in general, is considered inert, non-toxic, non-flammable.. Polydimethylsiloxane is the most widely used silicon-based organic polymer material used in microchannel systems, joint fillers, lubricants and contact lenses in biomems.

The main purpose

It is commonly used as advanced lubricating oil, shockproof oil, insulating oil, defoaming agent, release agent, polishing agent and vacuum diffusion pump oil. In all kinds of silicone oil, methyl silicone oil is the most widely used, is the most important variety of silicone oil, followed by methyl phenyl silicone oil.

In addition, there are ethyl silicone oil, methyl phenyl silicone oil, silicone containing nitrile and so on. Various functional silicone oils and modified silicone oils are mainly used for special purposes.

The role of polydimethylsiloxane in cosmetics

1. Polydimethylsiloxane has good lubrication performance, and can form a layer of uniform waterproof protective film after applying it to the skin, but without any sticky and greasy feeling, and has good luster.
2. The anti-ultraviolet radiation performance is good: it will not cause oxidative deterioration and skin irritation under ultraviolet light.
3. Good antistatic performance: the test shows that the skin static electricity which has been wiped with polysiloxane skin cream is eliminated completely, and has obvious dustproof effect.
4. Good air permeability: even the formation of siloxane film on the skin does not affect sweat discharge.
5. It has the effect of slow release of fragrance and fragrance, so it has a long period of fragrance preservation and high stability. It is chemically inert, and has no adverse effect on other components of cosmetics, especially the active ingredients.
6. Non-toxic, odorless, tasteless, will not cause irritation and allergy to the skin, high safety, has a certain effect on some skin diseases, such as dysphoric eczema neurodermatitis and occupational dermatitis.