This Schwarzkopf product is a gentle wash pre-treatment that offers a complete neutralization of yellow tones at the time of washing. Created to ensure that blonde tones are maintained and do not lose colour, enhancing all its qualities. Designed mainly to care for hair with warm and yellow tones, eliminating them and giving way to cool blondes. It combines purple and blue pigments, helping at the same time the cleaning process without sulphates and with a balanced pH. Recommended for use in beauty salons or hairdressers, and to maintain the blonde colour. It helps to tone down unwanted tones, can refresh balayage highlights and create a slate grey effect. This corresponds to the 300ml bottle. It can be used by women and men with highlights, grey hair or ashy discolourations or who wish to minimize yellow tones.