The skin is the first line of defense against toxins, environmental aggressors, the sun, pollution germs, bacteria, and more. For that reason, it is constantly fighting off free radicals, damaging toxins, and anything else that can potentially impair it, which is why antioxidants should be a staple in every skincare routine. But unfortunately, even some of the daily products we use on the skin can unknowingly be problematic. "This includes some deodorants, most perfumes, which are very toxic and filled with hundreds of hidden carcinogens, and even some oils that are loaded with synthetic fragrance," says esthetician Amber Rose Johnson of Facial Lounge.