LOreal Professionnel INOA Ammonia Free Hair Color Permanent color withtechnology for 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 the next color treatment. Hair is softer than before the hair coloring process. Sublime shine. Mix 1 to 1 ratio. Contains no ammonia and no odor.