Removes permanent, semi-permanent and temporary hair colours.Removes colour and product build-up.Allows you to re-colour immediately.If your hair has been subjected to high lifting tints or bleaches your natural pigment has been lightened and altered. It will not be possible to restore your natural hair colour pigment by using ColourB4. In these instances (and if your original natural colour is desired) you should re-colour your hair (initially) using a semi-permanent hair colourant which is one shade lighter than your original colour.Please ensure you follow the included safety and how-to instructions carefully.