Creation myth: While working at Barneys New York, Carney was mixing her own nail polish colors at home. When customers started asking about her manicures, she realized she’d found a market. In 2009 she debuted RGB in 10 classic colors and followed up with seasonal collections. Toast (right), from 2009, is still a best-seller.
Key ingredients: The products are known for what they don’t contain: formaldehyde, toluene, DBP, formaldehyde resin, and camphor.
Recent developments: A nail- care collection, including acetone- and acetate-free soy-based color-removal pads, and an ongoing collaboration with green celebrity manicurist Jenna Hipp.
Where to buy: Tenoverten (tenoverten.com); Reformation (thereformation.com)