Viviscal Professional understands the science of hair growth from the inside and outside. Viviscal Professional Thin to Thick Shampoo promotes the appearance of healthy looking, beautiful hair growth. Why Viviscal Professional Thin to Thick Shampoo? Cleanses the scalp and hair to promote the appearance of healthy looking hair growth* Promotes thicker looking hair with Ana:Tel, a proprietary complex containing clinically tested ingredients derived from natural sources, such as pea sprouts and grape seeds Nourishes with Biotin, Collagen Keratin Free from SLS, SLES, Parabens Artificial Colors Suitable for everyday use and all hair types including dry, damaged, color treated, fine and thin hair Botanical fragrance leaves hair infused with a refreshing scent that lasts