Milady Cosmetology Practice Exam

What is a common effect of using high-pH shampoos on color-treated hair?

1. Enhances color

2. Prevents dryness

3. Causes fading

4. Makes hair shinier

The correct answer is: Causes fading

Using high-pH shampoos on color-treated hair can lead to fading of the color. This is because high-pH products are more alkaline, which can open the hair cuticle. When the cuticle is raised, color molecules may escape more easily from the hair shaft, resulting in a loss of color vibrancy and overall luster. Color-treated hair typically requires pH-balanced shampoos that help maintain the integrity of the hair cuticle and preserve the color. Using lower pH products can help to close the cuticle and lock in color, thus preventing fading. Therefore, high-pH shampoos are not suitable for color-treated hair, as they can adversely affect the longevity and intensity of the color.