Safe manicures in a posh but inviting joint are Base Coat's specialty. This modern take on the classic nail salon is unique for many reasons, but its big draw is an emphasis on safe, healthy alternatives to conventional manicure products. Base Coat uses all-natural cuticle oil, lotions and scrubs made by local eco-conscious beauty company R.L. Linden; acrylic nails and gel manicures are a no-no, and all polishes used are free of the ultra-toxic "big 5" — formaldehyde, formaldehyde resin, toluene, DBP and camphor. But Base Coat is also an art gallery; owner Tran Wills incorporates Denver-connected artists into each venture she oversees.