Delaware Cosmetology and Barbering Practice Exam

When selecting a shampoo for clients with color-treated hair, a sulfate-free formulation is crucial because sulfates can strip the hair of its natural oils and lead to the fading of color. Sulfates are strong cleansing agents that create lather; however, they can be too harsh for color-treated hair, which is often more vulnerable and requires gentle care to maintain its vibrancy and health. Using a sulfate-free shampoo helps preserve the color and shine of the hair while still providing adequate cleansing without causing damage or excessive dryness.

Other formulations, such as those with strong cleansing agents or clarifying shampoos, are typically too aggressive for color-treated hair, as they can further strip away color and moisture. A fragrance-free formulation, while possibly beneficial for sensitive skin, does not specifically address the needs of color-treated hair and is not a primary concern for preserving hair color.