All products are independently selected by our editors. If you buy something, we may earn an affiliate commission. The best purple shampoo can prolong the brightness of bleached hair for months ...

Unfortunately, dyed hair likes to slowly creep back toward that brassy yellow over time. That's where purple ... clean slate before applying,” Bertucci says. Bertucci likes this shampoo from ...

Every blonde knows that the best way to maintain your hair dye is to use the best purple shampoo. If you love the look of ...