Cyclomethicone

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

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.

Country of Origin: USA

Raw material source: Dimethyldichlorosilane and water

Manufacture: Cyclomethicone is made from dimethyldichlorosilane which is produced by powdered silicon (silicone dioxide) and methyl chloride. Dimethyldichlorosilane is then hydrolyzed to give a hydrolysate mixture of polysiloxanes. In a polymerization reaction with water the polysiloxanes are then polymerized to a cyclic polymer (cyclomethicone) consisting of either 4 siloxane units (cyclotetrasiloxane) or 5 siloxane units (cyclopentasiloxane).

Animal Testing: Not animal tested

GMO: GMO free (does not contain plant-derived components)

Vegan: Does not contain animal-derived components

Documents: SDS, Fact Sheet, Sample Recipe, Certificate of Analysis