Hair loss is typically caused by excess dihydrotestosterone (DHT) in the body. Shapiro MD’s active ingredients target the specific enzyme that converts the male hormone testosterone into DHT, effectively halting the main cause of hair loss. The Shapiro MD Triple Action Shampoo and Conditioner has helped thousands of men and women achieve life changing thicker and fuller hair. In addition to powerful DHT blockers, Shapiro MD’s products contain essential nutrients for a healthy scalp and hair.