Kemon YO GreenSystem 2 Ounce 60 Gram This Tone-on-Tone color provides intense, long-lasting tones with a natural touch. Yo Color System is a complete wellness treatment, a soft yogurt-based mixture with certified organic ingredients. The active ingredients protect, hydrate, and nourishes the hair in the most gentle way. You will find the hair softer and smoother after coloring. With neutral pH, this hair color doesn't lighten your hair shade. It's Fragrance-Free, Paraben-Free, Sles/Sls free, and Silicone Free.