Distribution of a haircolor product over the mid-lengths and ends following the application to the regrowth area.

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.

This is also known as oxydative haircolor and has permanent results. It simultaneously lightens and deposits.

An element that releases oxygen. It breaks down into water and oxygen. The value of hydrogen peroxide is expressed in the percentage of pure hydrogen peroxide or the volume of releasable oxygen.

Example: 6% or 20-volume

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.

The depth of the haircolor. Measured level 1, the darkest shade, through level 10, the lightest shade.

A mild alkaline agent that has the advantage of not having an unpleasant odor, compared to ammonia.

Uses a numbered level system and a numbered and lettered tonal system.

Agent capable of releasing oxygen, which acts on another component to modify it.

A gas with no smell, color, or flavor, present in the air. It is an active principle in any oxidative haircolor phenomenon, such as lightening.

Distinguishes a color as being warm or cool.

The necessary time for haircolor to process.

Mandatory allergy test applied 48 hours prior to an oxidative haircolor.