An innovative ammonia-free method called Inoa offers intense hydration. L'Oreal Professional has achieved the unthinkable: a total rethinking of the traditional coloring process, along with the creation of a unique performance oxidation coloring that is odorless, free of ammonia, and optimally respectful of the scalp and fibers. 35 minutes to lighten up to three tones Complete coverage of white hair Over time, consistency and flawless hold of the Inoa color Thirty-five minutes of exposure Combination: 1 + 1 (60 ml Oxidant Inoa Cream + 60 ml Inoa). Application: Start at the roots and work your way up to the tips. Emulsify and rinse well until the water is clear. Use an Inoa Post shampoo to finish. Combine 1/2 tube of your shade with 1/2 tube of the foundation shade for the best coverage for white hair (1, 2, 3, 5, 6, 7, 8, 9, 10).