Silicones are tough. Technically, silicones aren’t inherently dangerous. Linear cyclical silicones, like dimethicones or your MFA codes, are not dangerous to human health or the environment.
Nonetheless, some manufacturers keep away from them altogether as a result of they do not actually have a health-forward standpoint level—in skincare, they make lotions really feel good and silky; in hair care, they supply a superficial coating across the strand and make it really feel clean and glossy. However they do not present vitamins or moisture, and so they have a tendency to stay on hair and pores and skin.
“So it modifications consumer conduct in a very fascinating means,” notes Engler. “If you’re utilizing a hair cream that has a dimethicone in it, it would not rinse out of the hair all that straightforward, after which you must be tremendous aggressive while you’re washing your hair.” Identical goes for pores and skin: “When you’re utilizing a face cream that has one among these silicones, you are going to must be form of aggressive to get it off, or it isn’t all going to return off, after which it would clog pores,” Engler provides. We digress.
Nonetheless! There’s a class of nonlinear silicones, known as cyclic silicones, that do truly construct up in our waterways. Some examples are cyclotetrasiloxane (D4), cyclopentasiloxane (D5), cyclohexasiloxane (D6), and cyclomethicone. The extra you wash and elegance with these silicones, the extra they bioaccumulate in our water supply once they swirl down the drain. Learn up on silicones here.