Idaho Cosmetology Licensure Practice Exam

The term "double-process" in hair coloring specifically refers to the technique of lightening the hair first and then applying a toner or color. This method is often used to achieve a lighter hair color or to add a specific tone after the initial bleaching process.

In this approach, the first step involves using bleach or a lightening agent to lift the natural pigment from the hair. Once the desired level of lightness is achieved, a toner or preferred hair color is applied to enhance or neutralize the tone, resulting in a more vibrant or balanced color. This technique is especially common for achieving blonde shades, pastel colors, or correcting brassy tones.

Understanding this process is important for cosmetologists, as it allows them to create the desired results while maintaining the integrity of the hair. This two-step process is distinct from other hair coloring methods, which may involve simultaneous application or only one step without the need to lighten the hair first. The focus on both lightening and toning is what clearly defines the "double-process" terminology in hair coloring techniques.