Refuels, Soothes, Replenishes Supercharged by the drop! 84% of women said their scalp was less visible after 8 weeks of use. * A concentrated gel serum is specially designed for noticeable hair thinning and a sensitive scalp that uses a gentle yet extra-potent Superpower blend combined with plant-derived actives Rosemary Extract and Apple Cider Vinegar for thicker-, denser- and stronger-looking hair.