What is this product? Bleaches work by carefully depigmentation the hair， to produce permanent results， however， achieving the popular cool blonde tones. With Schwarzkopf Professional?s IGORA Blond products you can achieve the perfect blonde hair colour. More info: Anti-yellow-effect formula is active against unwanted gold tones which might occur in conventional bleaching. Simple mixing system for perfect illumination. Unique texture for secure and clear brightening blonde shades.