What stands out upon entering Mai Dang's nail salon, located on a busy street in Berkeley, Calif., is what's missing — the stinging smell of polish, remover and other nail products. That wasn't always the case. For a decade, Dang suffered from the effects of the chemicals she used at work every day.
"When you do nails, workers get itchy skin and watery eyes," says Dang, 40. She also used to have frequent headaches, and one of her workers developed asthma. So when she heard about an opportunity to improve the safety at her salon, she signed up.