Dimethylpolysiloxane Dimethylsiloxane is used in food as an anticaking agent which keeps food from clumping. It is also used as an emulsifier which assists in forming food together that normally wouldn’t mix, like oil and water. Dimethylpolysiloxane also works in assisting foam formation. Dimethylsiloxane is commonly used in adhesives, caulk, lubricants, sealants, anti-foaming agents, cosmetics …