Iowa Cosmetology Practice Exam

What is the primary purpose of a hair bleach?

1. To condition the hair

2. To lighten the natural color of the hair

3. To enhance shine

4. To permanently wave the hair

The correct answer is: To lighten the natural color of the hair

The primary purpose of hair bleach is to lighten the natural color of the hair. Hair bleach contains strong chemical agents, typically hydrogen peroxide or ammonia, which work to break down the natural pigments in the hair shafts. This process of oxidation effectively removes or alters the existing color, resulting in a lighter shade. Hair bleach can be used on its own or as a part of a broader coloring process to achieve various shades, from subtle highlights to dramatic platinum looks. Understanding the fundamental chemical reactions that bleach performs is critical for anyone in the cosmetology field, as it directly impacts the effectiveness and safety of hair coloring services.