Trichup Thermal Protection Hair Serum provides effective protection against extreme heat generated by heat styling equipment by forming a protective film on the hair cuticle. This makes the hair less prone to breakage and damage. Hair serum leaves hair soft and manageable. Repeated exposure to heat styling tools can damage hair follicles, leading to breakage, brittleness, and hair loss. As a result, hair becomes dull, frizzy, and lifeless. A hair serum is a liquid product usually made with silicone to create a protective layer on the cuticle of the hair to help smooth flyaway hair. This smooth, light-reflecting film makes the serum give your hair a shiny, non-greasy look.