Excel color, tone-on-tone coloring, ammonia-free, goes away with washes. It replaces the old ammonia-free Color Excel. BENEFITS: Enhances the natural foundations. Subtle, but visible color. Refresh the tone in the mids and ends. Conceal the first gray hairs. HOW TO USE: An easy and fast service: act in 20 min. Increased cost-effectiveness, each tube allows for 2 applications. 1. Mix: 1+2. 35 ml* color + 70 ml activator. 2. Apply with a brush or applicator bottle. 3. Exposure time: 20 min. + 10 min. for resistant white hair. 70 ml tube for 2 applications.