By now, nearly 500 cosmetic manufacturers should have received the Environmental Working Group's (EWG's) survey asking whether their products contain the trace contaminant 1,4-dioxane. According to the group's database, at least 8,000 products on the market contain ethoxylated ingredients and may be contaminated with the chemical, which is a suspected carcinogen—although according to various experts, not at levels of concern from cosmetic products.
