This professional system fuses beauty and science, creating an easy-to-use, three-stage therapy process for hair regrowth for men. It is free of formaldehyde, sulfates and parabens. Consisting of a shampoo, treatment, and conditioner, it naturally blocks the enzyme that causes 95% of hair loss in men. The user shampoos his hair, then applies the treatment, leaving it on for five minutes, then rinses. The final stage is to condition, which helps restore shiny, soft, thick and healthy hair. Visit www.zenagen.com.