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 platinum locks and want to reverse those unwanted, warm and brassy hues ...

But now, black shampoo has entered the equation, this is what people are saying this will do for grey or blonde hair. There are only a few black shampoos on the market at present, but if people ...

Which is where colour-depositing shampoos can come in. From neutralising brassy tones in blonde hair to ... the whole hog with a box dye) then a colour-depositing hair mask could be the answer.