The brands that tested positive for lead levels included well-respected national brands including L’Oreal, Revlon, Avon, and Cover Girl. And high-end brands like Dior and M.A.C. weren’t exempt either. Five of the ten most contaminated lipsticks were manufactured by L’Oreal USA. Perhaps most disturbing, in some ways, is that even the “natural” brand Burt’s Bees had one lip shimmer that tested in the middle range for lead. (Stay away from Toffee if, like me, you love these products.)