Dimethicone Copolyol

Safety Information

The safety of dimethicone copolyols has been assessed by the Expert Panel on Ingredient Safety. The Expert Panel evaluated the scientific data and concluded that the dimethicone copolyols were safe for use as cosmetic ingredients. In 2003, as part of the scheduled re-evaluation of ingredients, the Expert Panel considered available new data on dimethicone copolyols and reaffirmed the above conclusion.

These polymers were, at most, slightly toxic when administered orally or dermally in a single dose. Dimethicone copolyols were not primary skin or ocular irritants and gave no evidence of subchronic oral toxicity. Clinical studies showed that the dimethicone copolyols were neither primary skin irritants nor sensitizers when tested at a 100% concentration.

Dimethicone copolyols may be used in cosmetics and personal care products marketed in Europe according to the general provisions of the Cosmetics Regulation of the European Union.

Link to the EU Cosmetic Regulation:


Dimethicone Copolyol

What Is It?

Dimethicone copolyol is a general term used for a group of polymers made from dimethicone and polyoxyethylene and/or polyoxypropylene. In cosmetics and personal care products, dimethicone copolyols are used in the formulation of hair sprays, wave sets, hair conditioners, shampoos, shaving products, and some makeup and skin care products.

Why Is It Used?

The following functions have been reported for the dimethicone colpolyols.

Scientific Facts

Dimethicone copolyols belong to a class of chemicals referred to as the silicones. Silicones are resistant to chemical, physical, biological and microbiological degradation within the realm of preparation, storage, and use in cosmetics and personal care products.