If you wouldn't eat it, why put it on your hands? That's the general principle behind simply Green Day Spa, which takes great pains to ensure that its manicures and pedicures (plus a suite of other beauty treatments, including facials) are good for the earth and good for the body. All of the products Simply Green uses are proudly free of the laundry list of polysyllabic, very scary-sounding chemicals that go into conventional nail supplies: DBA, toluene, formaldehyde, parabens, and phthalates. The nail polish remover is acetone-free; the polishes are vegan; the lotions and oils are organic; and nothing is tested on animals. And, yes, the nail technicians are just as good as they are elsewhere. Maybe because they're not inhaling chemicals all day?