"If their hair picks up natural pigment from the [sun's rays], it can turn their hair brassy as well. It's a good idea to balance everything out with a blue shampoo." As someone who's dyed her ...

Our top pick is Amika Bust Your Brass Blonde Purple ... a bottle blonde, or have graying hair, brassiness always creeps in between color touch-ups. Even with the best hair care products and ...