Discover Wella Professionals Invigo Blonde Recharge Color Refreshing Shampoo in the shade Cool Blonde. This purple shampoo is the best shampoo for blonde hair colour as it prevents natural or coloured blonde hair from yellowing and helps eliminate any potential brassiness. The nourishing elements in this shampoo hydrate the hair and leave it soft to the touch. The Cool Blonde Color Refreshing Shampoo renews and maintains the brightness and vibrancy of natural or highlighted blondes.