Pennsylvania Cosmetology Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

The recommended shampoo for use on chemically treated hair is a sulfate-free shampoo. Chemically treated hair, whether it has been colored, permed, or relaxed, is often more prone to damage and dehydration. Sulfates, which are commonly found in many shampoos, can be harsh and strip the hair of its natural oils, leading to further dryness and damage.

Sulfate-free shampoos are formulated without these harsh detergents, making them gentler on the hair and scalp. They help to maintain the hair's moisture balance, preserve the integrity of chemical treatments, and minimize color fading. Using a sulfate-free shampoo allows the hair to retain the benefits of the chemical treatment while promoting healthier, more manageable hair.

In contrast, clarifying shampoos are designed to remove product buildup and can be too harsh for chemically treated hair. Moisturizing shampoos provide hydration but may still contain sulfates that can be damaging. Volumizing shampoos typically focus on adding body to the hair and may not provide the specific care needed for chemically treated hair.