New Jersey Barber and Hairstyling Exam 2025 – 400 Free Practice Questions to Pass the Exam

A hair serum primarily serves the purpose of adding shine and reducing frizz. This product is typically formulated with silicones and oils that coat the hair shaft, providing a smooth appearance and a glossy finish. By creating a barrier against humidity, serums can effectively minimize frizz, which is particularly beneficial for individuals with curly or wavy hair, as it helps maintain a polished look throughout the day.

While other options present various benefits associated with hair care, they do not specifically describe the main functional attributes of hair serum. Detoxifying the scalp and promoting hair growth may involve different types of products formulated with specific ingredients to address those issues, while deep cleansing is usually the role of shampoos rather than serums. Thus, the primary function of a hair serum remains its ability to enhance hair's shine and manageability by controlling texture and frizz, making it a valuable addition to hair care routines.