“…Considering other ingredients, let's look at the example of one topical skin care product, AnteAge Serum, promoted by an anesthesiologist and currently on the market and positioned for sale to estheticians, physicians, and other health care providers: Second, although cetyl ethylhexanoate is considered to be safe for use in skin care products when diluted, the chemical itself causes irritation of the skin (Fiume et al, 2015) and therefore as a stay-on, constantly used skin care chemical, may induce inflammation. Third, carbomer has been shown to be cytotoxic when applied to the skin (Guo et al, 2015). Fourth, in one study of polyisobutene, in vitro application was shown to promote a cancer-like cellular transformation (Cosmetic review panel, 2008).…”