LOreal Professionnel INOA Ammonia Free Hair Color 2.1oz (4/4N) Brown Get 6 weeks of intense hydration and nutrition with Loreal's INOA hair color. This permanent color is with ODS2 technology and zero ammonia offers uncompromised 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 until next color treatment. Hair is softer than before the hair coloring process. Sublime shine. Mix 1 to 1 ratio. ATTENTION: These products require professional expertise. The seller is not liable for any adverse outcome resulting from the use of this product.