Schwarzkopf Igora Royal Oil Developer 40 Vol 12%, 33.8 Oz

For coloring up to 2-3 levels lighter with the Color of Rhapsody, Harmony, Lust, Perfection and Serenity. For lightening 3-4 levels with 10- series. Recommended application for 10- series: natural base 7-0 and lighter. For lightening 4-5 levels with 12- series. Recommended application for 12- series: natural base 6-0 and lighter.