An InStyle writer with color-treated blonde hair reviews the Davines Heart of Glass Silkening Shampoo, a blue toning shampoo ...

Enter the best blue shampoo. When brassiness appears, colored hair takes on unwanted warm hues, including orange or red tints to brown hair and yellow or gold in ashy blonde tresses. The best blue ...

as they fade. Enter blue shampoo. Similar to purple shampoos, which keep blonde hair bright, blue shampoos are specifically designed to color-correct dyed brunette hair, says Paul Cucinello ...