Unique cool blondes Préférence Cool Blondes with light-reflecting dyes - for a luminous and refined color. Ultra cool, luminous blondes are enriched with ash and pearl tones and a mask against copper reflections. The formula with the consistency of a transparent gel gives the hair a shade of blonde with cool reflections, enhancing the intensity of the natural accents of the hair color. The nourishing mask enriched with purple dyes neutralizes yellow and copper reflections week after week. The effect lasts up to 6 weeks! Optimal coverage of gray hair.