North Dakota Cosmetology Practice Exam 2026 – 400 Free Practice Questions to Pass the Exam

The purpose of a neutralizing shampoo is to re-balance the pH level of hair. After chemical processes like perming or relaxing, hair can become either too alkaline or too acidic. Using a neutralizing shampoo helps to restore the hair to its natural pH level, which is typically around 4.5 to 5.5. This restoration is essential for maintaining the health and integrity of the hair, as it can prevent damage, reduce frizz, and enhance overall appearance.

Other options, such as adding moisture or enhancing hair color, do not directly relate to the primary function of a neutralizing shampoo. While some shampoos might offer moisturizing properties or color-enhancing effects, the distinct role of a neutralizing shampoo is specifically tied to pH balance, making it essential after certain hair treatments. Clarifying buildup on the scalp is also not the primary purpose; that function is typically associated with different types of cleansing shampoos.