Cyclomethicone is a silicon-based cyclic compound that is derived from the natural elements silicon and oxygen. It is a popular ingredient in cosmetics and personal care products due to its ability to impart a soft, silky feel to the skin and hair, and its ability to help carry oils and nutrients to the skin and hair without leaving a greasy feeling.
Imparts soft silky feel to the skin Excellent spreading Leaves no oily residue or build up Detackification Non-greasy
Suitable for most skin types, including congested, dry, or sensitive skin types, as well as skin types that may have damaged skin barrier integrity.
Some people may experience minor irritation of the skin and eyes.
Avoid using on broken or irritated skin.
Commercially D5 is produced from dimethyldichlorosilane. Hydrolysis of the dichloride produces a mixture of cyclic dimethylsiloxanes and polydimethylsiloxane.
Safe for cosmetic use.
Unacceptable
Cyclomethicone is a volatile silicone that evaporates quickly after application, leaving behind a silky, smooth finish. It is often used in hair care products to add shine and reduce frizz, and in skin care products to improve the appearance of scars and reduce irritation. Cyclomethicone D4 is rarely used as a cosmetic ingredient. D4 can also be present at very low residual levels (generally <0.1%) in D5 and D6, since it is used as a starting material in the production of those cyclomethicones. During this manufacturing process, virtually all of the material is consumed leaving only a tiny amount of D4. The EU’s Scientific Committee on Consumer Safety (SCCS) reviewed the safety of D4 and D5 in 2010 and concluded that cyclomethicones (D4 and D5) do not pose a risk for human health when used in cosmetic products. The Government of Canada concluded that siloxane D5 and D6 are not harmful to human health. However, they concluded that only siloxane D4 may cause harm to the environment or its biological diversity. Cyclomethicone has been associated with several concerns, including enhanced skin absorption, persistence and bioaccumulation, use restrictions, organ system toxicity (non-reproductive), endocrine disruption, developmental/reproductive toxicity, and ecotoxicology.
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