Say hello to cool colour with the schwarzkopf professional goodbye yellow neutralizing wash, an anti yellow shampoo that will neutralise underlying warm tones.. Schwarzkopf professional's first highly pigmented, anti brass ph 4.5 shampoo, the goodbye yellow neutralizing wash combines purple and blue direct dyes to neutralise unwanted yellow undertones whilst gently cleansing the hair.. A combination of colour deposits and active washing substances allows for neutralising, cleansing and care in a single step, leaving hair fresh and your colour cool and refreshed in between salon visits.. Use 1 2 times per week for tonal maintenance, or daily for maximum tonal deposit. Leave on for up to 5 minutes. Wear protective gloves and protect clothing before use.. Sulphate free.