PSI Barbering Practice Exam

What is the process called when hair color is oxidized by removing hydrogen?

1. Oxidation

2. Reconstruction

3. Reduction

4. Neutralization

The correct answer is: Reduction

The process of oxidizing hair color through the removal of hydrogen is known as reduction. In chemistry, reduction refers to a reaction where the oxidation state of an atom or molecule decreases, which often involves the gain of electrons or the removal of hydrogen. In the context of hair coloring, when color molecules undergo reduction, they lose hydrogen, enabling the lightening of hair color. This process is key in various hair coloring techniques, particularly when lightening hair or altering its pigments. By understanding reduction in relation to hair color, professionals can manipulate the hue and depth of the color effectively. Other processes mentioned do not pertain to this specific reaction in hair coloring. Oxidation typically refers to the addition of oxygen or the removal of electrons and hydrogen, which is the opposite of what happens during reduction. Reconstruction involves restoring the hair's integrity, often focusing on damage repair, while neutralization refers to balancing pH levels, particularly in chemical processes like perming or relaxing.