The 4.1.1 Violet Shampoo is the ideal treatment for blonde, grey, or bleached hair. Its special violet formula effectively neutralizes unwanted yellow tones, leaving a clear, cool shade. At the same time, the shampoo contains a valuable combination of moisturizing and smoothing ingredients that make the hair supple and give it new shine. Thanks to integrated UV filters, the hair is additionally protected from the harmful effects of sunlight. The result is visibly stronger, more voluminous, and softer hair – completely residue-free.