Dimethyl silicone is also known as methyl silicone oil and polydimethy lsiloxane liquid. It appears as colorless transparent viscous liquid, being tasteless, odorless and non-toxic. It is soluble in benzene, toluene, xylene and ethyl ether, partially soluble in ethanol, butanol and acetone, insoluble in cyclohexanol,methanol, paraffin oil and vegetable oil. It has excellent hydrophobic moisture resistance, good light transmission, and chemical stability.Silicone oil is a form of silicone used to give products lubricity, slip, and good feel. It can also serve as a formulation defoamer and help reduce the feeling of greasiness that some creams leave on the skin immediately upon application. In addition, Silicone oil is reported to protect the skin against moisture loss when used in larger quantities. It improves product flow and
spreadability. In combination with other ingredients, silicone oil becomes a good waterproofing material for sunscreen emulsions, and helps reduce the greasiness often seen in high-SPF preparations.