Iowa Cosmetology Practice Exam

A suitable product to repair split ends is hair serum or oil. These types of products are specifically formulated to provide moisture, nourishment, and protection to the hair strands. Hair serums or oils contain ingredients that can penetrate the hair cuticle, helping to seal split ends and reduce their appearance. They often include silicones or natural oils that coat the hair, providing a smooth finish while also helping to prevent further damage from environmental factors or heat styling.

In contrast, conditioning shampoos are primarily used for cleansing the scalp and hair while providing some moisturizing benefits but are not specifically targeted for repairing split ends. Hair mousse is designed to add volume and texture to the hair and does not address split end repair. Hair spray is typically used for holding hairstyles in place and does not have any reparative properties for damaged hair. Therefore, hair serum or oil is the most appropriate choice for addressing and repairing split ends effectively.