BLONDIFIER GLOSS professional concentrate treatment 400 ml BLONDIFIER GLOSS professional concentrate treatment 400 ml is a professional concentrate treatment for blonde hair. It is formulated with a blend of natural ingredients, including keratin, argan oil, and wheat protein, to deeply nourish and strengthen the hair. This treatment helps to protect against breakage and split ends, while enhancing shine and smoothness. It also helps to reduce the appearance of brassiness and yellow tones, leaving the hair looking brighter and healthier.