CAS# 68554-70-1

Description:

POLYMETHYLSILSESQUIOXANE: Polymethylsilsesquioxane is a polymer formed by the hydrolysis and condensation of methyltrimethoxysilane. It is used in skin care and hair care products for its lubricating and water repellant abilities.

As Polymethylsilsesquioxane is a silicones ingredients, many research has connected silicones to cancer and organ failure. Although it is generally considered to be a hazardous ingredient when injected into the skin or body, but not when applied topically. Many studies find silicones, including Polymethylsilsesquioxane, to be safe when used in the body as well, including a study published in the New England Journal of Medicine, in which after a 14 year study of over 1,000 women with breast implants, a team of researchers and doctors concluded that “we did not find an association between silicone breast implants and connective-tissue diseases, defined according to a variety of standardized criteria, or signs and symptoms of these diseases.”

Cosmetic Function(s):

• Opacifying Agent