Decamethylcyclopentasiloxane (D5) is an organosilicon compound with the formula [(CH3)2SiO]5. It is a colorless and odorless liquid that is slightly volatile. The compound is classified as a cyclomethicone. Such fluids are commonly used in cosmetics, such as deodorants, sunblocks, hair sprays and skin care products. It is becoming more common in hair conditioners, as it makes the hair easier to brush without breakage. It is also used as part of silicone-based personal lubricants.

Product Name	Decamethylcyclopentasiloxane
CAS NO.	541-02-6
Melting point	-44oC
Boiling point	89-90oC
Density	0.958g/mL at 25oC
Chemical Structure
Usage	Widely used in cosmetics and body care products, it has good compatibility with most alcohols and other cosmetic solvents
Storage	Normal Temperature

Application :
1.It is applied in personal care products, flavoring agents, hair spray, cleansing cream, skin cream, lotion, lipstick, bath oil, cosmetics and other nursing products.
2.It is applied in bath oil, shaving products, cosmetics, nail polish, powder make-up, perfume, Cologne and shaving cream.