Developed by board-certified dermatologist Alex Khadavi, MD, Revivogen is a safe and natural approach to hair loss and thinning hair that addresses male and female pattern baldness at its source. Revivogen blocks the production of DHT, a side effect of excess testosterone that causes the hair to fall out and leaves any regrowth finer and softer. By blocking the production of DHT, Revivogen helps reduce the rate of hair fallout. Revivogen also shields the existing hair, both protecting it against testosterone and environmental factors and creating a fuller appearance. With Revivogen Scalp Therapy, Bio-Cleaning Shampoo and Thickening Conditioner, visible results can be expected in as little as 60 days.