Illinois Cosmetology Practice Exam 2025 – All-in-One Guide to Master Your Licensing Test!

Hair serum is commonly used to treat split ends due to its specific formulation that provides nourishment and moisture to the hair. Serums typically contain a blend of silicones, oils, and other beneficial ingredients that help to smooth the hair cuticle, reduce frizz, and enhance shine, making them effective for managing split ends. By coating the hair strands, serums create a protective barrier that can temporarily seal split ends, making the hair appear healthier and more polished.

In contrast, hair gel is primarily used for styling and holds the hair in place but does not address the health of the hair or split ends. Hairspray is also a styling product used to fix a hairstyle in place rather than treat the hair's condition. Hair mousse adds volume and texture but is not formulated to repair or treat damage like split ends. Thus, the properties and intended use of a hair serum make it the ideal choice for treating split ends effectively.