Is Dimethicone Bad for Skin?
It is not harmful to the human body, but it is not suitable for pregnant women.

The substance is prepared from a dimethyldichlorosilane as the main raw material. It is added to the cosmetics and other personal care related products in daily life. This substance has good compatibility with alcohols. This substance is harmless to the human body, but cosmetics also contain other irritating substances, so pregnant women should avoid using them.

In addition to direct use of polydimethylsiloxane, in order to disperse methyl silicone oil well, it is convenient for dipping, spraying and improving efficiency. It can also be formulated into three types: solution type, lipid type and emulsion type. It and its derivatives are high-quality raw materials for cosmetics, have good skin care functions, and belong to synthetic oils in cosmetic raw materials. This product is non-toxic, non-irritating to skin and mucous membranes, but irritating to eyes, generally recognized as safe.
Extended information:

Polydimethylsiloxane is a food-grade defoamer, which can be used in medicine, food brewing, and defoaming during fermentation. Because it is non-toxic and does not cause physiological reactions in the human body, it is also used as a medical defoamer for the treatment of acute pulmonary edema and flatulence. The substance called silicone (Silicones, or silicone oil) in pharmacy monographs is a general term for a class of organosilicon oxide polymers.

Dimethicone is only one of its commonly used pharmaceuticals. In addition, there are ethyl silicone oil, methyl phenyl silicone oil, wax-containing silicone oil and so on. In the tablet polishing agent insect wax, a small amount of this product is often added to enhance the brightness and moisture resistance of one-sided.

In the ointment, this product is an ideal hydrophobic base because of its good lubricity, easy to apply, does not stain clothes, and does not hinder the normal function of the skin. It is often used in combination with an oily base to make a protective ointment to prevent the irritation or corrosion of water-soluble substances, acids, and lye.