Enriched with our innovative Ceramide A2 technology and Keratin, this 2-in-1 hair color can produce opaque or dimensional results while providing superior gray coverage and vibrant tones. The micro-pigmented formula is available in more than 100 shades, produces even results, and imparts unparalled longevity. Mixing Ratio = 1:1 for Opaque Results or 1:1.5 for Dimensional Results Mix with 10, 20, 30, or 40 Volume Developer Timing: Process for 35 Minutes or 45 Minutes for Resistant Gray hair