Process color for 45 minutes to ensure maximum gray coverage. IGK Kits will not lighten previously colored hair, you can only match or darken your current shade. If you're lightening virgin hair, choose a shade no more than 1-2 levels lighter than your natural hair color. Still unsure? Get the right color for your hair with our Shade Finder. Charcoal Hair Color, Chocolate Cherry Hair Color, Lavender Grey Hair, Chocolate Cherry Hair, Charcoal Hair, Virtual Consultation, Violet Hair Colors, Cherry Hair Colors, Parting Hair