LOreal Professionnel INOA Ammonia Free Hair Color 2.1oz (6.1/6B) Dark Ash Blonde Permanent color with ODS2 technology and no ammonia offers 6 weeks of intense hydration and nutrition. Gets your optimized scalp comfort. Lightens up to 3 levels in 35 minutes. Covers up to 100% of white hair. Easy to mix and apply. Leaves hair feeling intensely nourished and hydrated untill next color treatment. Hair is softer than before hair coloring process. Sublime shine. Mix 1 to 1 ratio.