It give a perfect finish with a color result that is even from roots to ends The hair is left in superb condition with a brilliant shine It provides long lasting color Loreal Inoa Ammonia Free ODS2 Hair Color 60g/2oz (4,0) aka 4.0/4NN permanent color with ODS2 technology with uncompromised comfort. Lightens up to 3 levels in 35 minutes. Covers up to 100% of white hair. Loreal Inoa hair color contains no ammonia and enriched with oils and delivers outstanding color to the heart of the hair. INOA leaves hair feeling conditioned with sublime color radiance until your next color appointment. Experience our ultimate in luxury color, with improved comfort during the development time and no odor. These color tubes are imported from Europe and display in European System of shade numbers. They contain the same color as US counterpart. The European shade number is listed first, as it appears on the package; matching US shade is listed after "aka" which is an abbreviation for Also Known As.