What Is It?

Simethicone is a grey, viscous liquid. In cosmetics and personal care products, Simethicone is used in bath, body, hair and skin care products.

Why Is It Used?

In cosmetics and personal care products, Simethicone is an ingredient that is used to reduce the tendency of finished products to generate foam when shaken.

Scientific Facts

Simethicone is a mixture of dimethylpolysiloxane and hydrated silica. Dimethylpolysiloxane is approved by the FDA for use as a direct and indirect food additive.

Safety Information

The Food and Drug Administration (FDA) and permits the use of Simethicone as an ingredient in Over-the-Counter (OTC) antacid and antiflatulent products. Cosmetic Ingredient Review (CIR) has deferred evaluation of this ingredient because the safety has been assessed by FDA. This deferral of review is according to the provisions of the CIR Procedures.

Simethicone is used in ointment bases, as an antifoaming agent and as a prosthetic aid (soft tissue).

Link to FDA Code of Federal Regulations for Simethicone…

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

Link to the EU Cosmetic Regulation:…

More Scientific Information

When used as an antiflatuent agent in OTC drugs, Simethicone acts as an anti-foaming agent reducing the surface tension of gas bubbles, causing them to combine into larger bubbles in the stomach that can be passed more easily by burping. Simethicone may also be called simeticone.


Find out more about the regulation of over-the-counter drugs by the Food and Drug Administration

OTC Drug Home Page:…

Information about OTC Drug monographs:

Find out more about the regulation of Food Additives by the Food and Drug Administration

Food Ingredients and Packaging:

Food Contact Substances:…

Substances Generally Recognized As Safe (GRAS):

Search the Code of Federal Regulations

EU Cosmetics Inventory