Loreal Inoa Permanent Haircolor 5.15/5BRv ODS2 No Ammonia 2.1 Ounce 60 Milliliters High Resist A permanent color with ODS2 technology for uncompromised comfort and contains no ammonia and no odor. Inoa color lightens up to 3 levels in 35 minutes and covers up to 100% of white hair. Easy to mix and apply. Leaves hair feeling intensely nourished and hydrated until next color treatment leaving hair is softer than before hair coloring process with sublime shine. Mix 1 to 1 ratio. *This is a professional product and should be used only by a trained individual. The seller is not liable for any adverse outcome resulting from the use of this product.