What Is "dimethicone"?

Dimethicone is a moisturizing agent that treats and prevents itching and skin irritation, according to Drugs.com. It is for external use only and should not be put into the eyes, mouth or nose. If dimethicone accidentally reaches the eyes, mouth or nose, flushing with cool water is recommended.

Dimethicone is an emollient found in many name brand moisturizers, according to Drugs.com. After using the cream topically, the area should not be wrapped. Hands should be washed after handling dimethicone.

Emollients are substances that soften and moisturize the skin. Since dry skin is caused by a loss of water, emollients trap water in the skin by forming an oily layer on the top of the skin, explains WebMD. Dimethicone is not to be used on any broken skin, and it is best used regularly and after bathing or showering while the skin is still damp.

Side effects that can occur with use include itching, burning and stinging. If allergic reaction symptoms occur, medical advice should be sought. These symptoms include rash, hives, tightness in the chest and swelling of face, tongue or lips.