PURA D'OR Hair Thinning Therapy Shampoo is a clinically tested formula proven to help strengthen, minimize breakage and reduce hair thinning. This exclusive blend of key active ingredients helps to improve volume, thickness, shine, split ends and a healthy looking scalp. Niacin, Biotin, Argan Oil, and other natural ingredients help to invigorate and purify the scalp, while encouraging strand strength and resiliency. Free from harsh chemicals, environmentally responsible, hypo-allergenic, vegan, and cruelty free.