Description: 100% active cyclic silicone polymer blend consisting of siloxane D4 (cyclotetrasiloxane) and siloxane D5 (cyclopentasiloxane). Cyclic silicones are low-molecular weight silicones and are not viscous but very fluid and often used as solvents. Linear silicones (e.g. dimethicone) are large high-molecular polymers that are viscous and more oil-like. Clear to slightly hazy liquid, odorless. Very low water solubility (20 micrograms/L), soluble in alcohol, mixable in oils. CAS: 556-67-2, 541-02-6 INCI Name: Cyclotetrasiloxane, cyclopentasiloxane Properties: Rapidly evaporates without cooling the skin, leaving the skin dry with a talc treated feeling. Ideal carrier for makeup, other color cosmetic skin creams, deodorants & stick products without the oily feel. Has excellent stability & aesthetics. Use: Typical use level 1-10% (up to 50% possible), add to oil phase of formulas but do not heat over 50°C (125°F). Can also be mixed into emulsions after the temperature drops to 50°C (125°F). For external use only. Applications: Color cosmetics, creams, deodorants, sticks, hair care products.