National Occupational Competency Testing Institute (NOCTI) Cosmetology Practice Exam

What color is used to neutralize unwanted red highlights in hair?

1. Blue

2. Green

3. Purple

4. Yellow

The correct answer is: Green

To neutralize unwanted red highlights in hair, the correct color used is green. In color theory, complementary colors are used to cancel each other out. Colors are represented on a color wheel, and red is directly opposite green. When green is applied to red tones, such as unwanted bright red or coppery highlights, it helps to neutralize them, resulting in a more balanced and natural-looking hair color. While blue, purple, and yellow play roles in color correction as well, they are used for addressing other specific undertones. Blue is commonly utilized to counteract orange tones, purple is effective against yellow tones, and yellow can sometimes enhance warmth but does not neutralize red. Therefore, green is specifically effective for countering red, making it the correct choice.