The hair regrowth results are incredible because Kerave Hair is a complete hair regrowth system. No other hair regrowth product compares to the combined power of the clinically proven hair regrowth spray and the incredible hair vitality supplement. The Kerave Hair Regrowth System is the result of decades of research and development, which resulted in the ideal balance of nature and science. Our formula works not only to grow new, thicker hair in a matter of days, but also works from the inside out to strengthen the hair follicle. Say yes to your healthy, shiny and beautiful new head of hair!