Ammonia gas solution in water. Gas composed of nitrogen and hydrogen. It has the property of opening the hair strand by slightly lifting its scales, which facilitates the penetration of haircolor agents.
A process that consists of massaging the haircolor mixture from the regrowth area. With INOA ODS², the emulsion begins by massaging the color at the regrowth area through the mid-lengths and ends with a small amout of luke-warm water.