Marc Anthony Grow Long Scalp Hair Serum. Healthy looking hair starts at the scalp. Formulated with Rosemary Oil to help strengthen hair fibre at the root; the foundation for stronger, longer growing hair. While a Caffeine, Ginseng, and Biotin conditioning blend helps protect your lengths from future breakage. Hair is left strong, frizz free and shiny. The intense conditioning blend helps protect your lengths from future breakage. Hair is left stronger, frizz free and shiny. Does not grow new hair. For all hair types