"I can tell when all my blondesKate Hudson, Scarlett Johansson, Uma Thurmanhave spent a lot of time in the pool because their hair gets a faint green tinge," says L.A. hairstylist David Babaii. Sound familiar? Try using a detox shampoo and
conditioner (like Fekkai Marine Clean Detox shampoo, $23; fekkai.com.) for a couple of weeks to eliminate the residual offender.