Red Seal Cosmetology Practice Exam

What can cause breakage and create a line of demarcation?

1. Overlapping color

2. Using cool water

3. Applying conditioner

4. Trimming ends

The correct answer is: Overlapping color

When coloring hair, it is important to make sure that the color is evenly applied and that there are no overlapping areas. Overlapping color can cause the hair to become overprocessed and damaged, leading to breakage. This can also create a visible line of demarcation, which is a clear line between the colored and natural sections of hair. The other options, such as using cool water, applying conditioner, and trimming ends, do not typically cause breakage or create a line of demarcation. Cool water may help seal the hair cuticle and maintain color, but it would not cause breakage or create a line of demarcation. Similarly, using conditioner and trimming ends are both beneficial for hair health and would not cause breakage or a line of demarcation.