Schwarzkopf Igora Royal Hair Color 60ml 4-0 Medium Brown Schwarzkopf Professional’s heritage colour brand IGORA ROYAL brings you true colour in High Definition with uncompromising coverage and unbeatable retention. Developed with colourists for colourists IGORA ROYAL lets your creativity run free providing you with the tools to transform imagination into reality, with true-to-tuft colour results for ultimate reliability – even under the most challenging conditions. How To Use Usage for shades with up to 100% white hair coverage: Use Igora Royal 3%, 6%, 9% or 12% Developer. Mixing ratio 1:1 Apply on dry hair. Allow to develop for 30 – 45 minutes. Rinse well. Shampoo and neutralize with BC Bonacure Color Save products.