-Revives cool, sensual brunette tones with sophisticated shine. Helps to even out yellowish or orange fading. Prevents dull hair color. Optimal on level 6-7, from level 4-5 will lead to good results as well. Hair/Scalp Type For all hair types. How to Use Work through wet hair. - For a soft reviving hue or for daily use, leave on for only 2 minutes and rinse. - For intensive color refreshing, leave on for up to 5 minutes and rinse. - Use weekly to only slightly refresh color. Technology - MicroPROtec with direct dyes provide quick and even distribution for optimal care and color refreshment. - Luminescine: transforms non-visible UV light into visible light for a magnificent brilliance.