What is the purpose of a hair serum?

The purpose of a hair serum is primarily to add shine and reduce frizz. Hair serums are typically formulated with silicone or other smoothing agents that coat the hair strands, creating a barrier that protects against humidity and environmental damage. This coating not only imparts a glossy shine, enhancing the overall appearance of the hair, but also helps to control frizz by sealing in moisture and preventing the hair from swelling in humid conditions.

While other products serve different functions—like shampoos which cleanse the hair, hair dyes which color the hair, or treatments that focus on strengthening hair strands—serums are specifically designed for enhancing luster and managing frizz. This makes them a popular choice for individuals seeking to achieve sleek and shiny hair while simultaneously combating flyaways.