RE-START color anti-brassiness purple drops 50 ml RE-START color anti-brassiness purple drops 50 ml is a professional salon haircare product used to reduce brassiness in blonde and silver hair. It is formulated with purple pigments that neutralize unwanted yellow and orange tones, leaving a cool and natural-looking tone. It can be used on natural, bleached, or highlighted hair. It is suitable for all hair types and is free of sulfates and parabens.