• If the desired color is darker than the natural color, the process should be carried out with 10 volume.
• If the desired color is the same as the natural color or 1-2 shades lighter, the process should be carried out with 20 volume.
• If the desired color is 2-3 shades lighter than the natural color, the process should be carried out with 30 volume for lightening.
• If the desired color is 3-4 shades lighter than the natural color, the process should be carried out with 40 volume.
• If a color that is 5 shades or more lighter is desired, the process should be carried out with a powder lightener.
• 10 Volume completely colors gray hair. It does not lighten the base color. It is used for coloring after hair lightening or for pastel colors and darker hair colors.
• 20 Volume completely colors gray hair. It is used for coloring the same tone or for lightening hair 1-2 shades. The degree of lightening may vary depending on the percentage of gray hair. It should be used for the base color and similar shades. It lightens the base color up to 1-2 shades. If the base color is darker than chestnut, the degree of lightening is reduced by ½ tone.
• 30 Volume is used for coloring hair with less than 50% gray hair. It lightens the base color up to 2-3 shades. If the base color is darker than chestnut, the degree of lightening is reduced by ½ tone. It is used for vibrant color applications.
• 40 Volume is used for coloring hair with very little gray hair. It lightens the base color up to 3-4 shades. If the base color is darker than chestnut, the degree of lightening is reduced by ½ tone. It is used for light color applications.