Polydimethylsiloxane is a hydrophobic silicone material with the chemical formula (C2H6OSi)n.

It is non-toxic, but it can cause vascular embolism and brain damage in clinical practice.
nature:
The chemical state of polydimethylsiloxane Dimethicone oil, colorless or light yellow liquid, odorless, high transparency, heat resistance, cold resistance, small viscosity change with temperature, water resistance, small surface tension, thermal conductivity The thermal conductivity is 0.134-0.159W/M*K, and the light transmittance is 100%. Dimethicone is non-toxic and tasteless, with physiological inertness and good chemical stability.
It has good electrical insulation, weather resistance, hydrophobicity, and high shear resistance, and can be used for a long time at -50℃～200℃. With excellent physical properties, it can be directly used for moisture-proof insulation, damping, shock absorption, defoaming, lubrication, polishing, etc. And as defoamer, mold release agent, paint and daily chemical additives.
Polydimethylsiloxane can be mixed with lanolin, stearyl alcohol, cetyl alcohol, glycerol monostearate, Tween, Span and other surfactants to be used as emulsion base. Adding film-forming agents such as PVP, PVA and cellulose derivatives to this product can enhance its protective properties. The drug release and skin penetration properties are faster than porpoise, lanolin and petrolatum.