Violet shampoo is one of the best ways to keep blonde hair looking beautiful and to prevent warmth from becoming too noticeable in your shade. The violet tone in the shampoo combats unwanted yellow in blonde hair, neutralizing it and giving your blonde hair a cooler appearance without the warm brassiness you don't want. What is violet shampoo? Violet shampoo is a toning shampoo containing violet pigment. Violet itself is the complementary tone to yellow, and when both of these colors are present in your hair, a neutral tone results because they effectively cancel each other out. Violet shampoos add violet into your blonde hair to 'tone out' visible yellow and gold tones, helping you to maintain a blonde color that isn't brassy. Not all shampoo is equal Violet shampoos vary widely in how concentrated they are, and even whether specific products are a pure violet tone or actually a mixture of tones. A violet shampoo that isn't as concentrated has a weaker to