Specially developed high-performing IGORA ROYAL Oil Developer guarantees perfect long-lasting colour results and superior shine. A conditioning, caring peroxide that's optimised to work with the Igora Colour range It comes in 4 strengths: 3% (10 vol) 6% (20 vol) 9% (30 vol) 12% (40 vol) 3% for darker or pastel colouring and for covering 100% white hair; 6% for tone-on-tone colouring, white hair coverage and lightening 1–2 levels; 9% for lifting 2–3 levels (3–4 levels with the Special Blondes), colouring with -00 shades and white hair coverage with the Absolutes; 12% for lifting up to 5 levels and for colouring with the Fashion Lights Key benefits High quality oil developer with increased oil content Effective concentration of active ingredients Colour pigments penetrate faster into the hair More intense colour results Technology The IGORA ROYAL High Definition-Technology features a high definition colour pigment matrix for clearest tone direction, enhanced true-to-taft results, amplified intensity and maximum coverage.