Pantene Pro-V Infinite Length Leave-On Hair Serum is a serum for dry, damaged hair that strengthens the hair and its ends, making it look healthier after just one application. Enriched with niacinamide and vitamin E, this leave-in treatment provides moisture and helps repair damaged hair and split ends. The product melts instantly into the hair and revitalizes every single inch of it. For the best results, use it as part of the complete hair care routine along with other Pantene Pro-V Infinite Length hair care products.