Hairgenics Propidren Hair Growth Shampoo for Thinning and Balding Hair with Biotin , Keratin, and Powerful DHT Blockers to Prevent Hair Loss, Nourish and Stimulate Hair Follicles and Help Regrow Hair.Clinical studies on hair loss have shown that the number one factor in hair loss is the production of dihydrotestosterone or DHT. Our revolutionary hair loss shampoo contains clinically proven DHT blo..