Using henna on gray hair has always been possible, but somewhat difficult. Henna has a harder time attaching to gray hair because of changes in the protein base of gray hair. After years of research, Light Mountain has developed a two-step product, Color the Gray! that effectively colors most gray hair. Available in eight shades, our color chart will help you determine which shade is appropriate for you. Inside the box are two treatments: Step 1 is applied first to condition the gray hair, thus aiding the acceptance of the final color treatment. Step 2, the final treatment, seals in the color. Color the Gray! is the first and only natural hair coloring treatment system for gray hair that does not rely on any chemical agents.