DHT is a major cause of male and female pattern hair loss. For the blocking of DHT in the body, apply OZiva Bioactive DHT Blocker7 Hair Oil to your hair before shampooing for hair fall control and hair growth. OZiva Bioactive DHT Blocker7 Hair Oil helps to improve skin penetration of caffeine and 5 alpha reductase control, stimulates strong follicle growth, and helps to reduce hair fall.