It is simply not possible Neither is it scientifically proven. We need to understand that hair turning gray is not a disease. It is a natural process. What happens is when people start getting gray hair they become conscious and start plucking them. Since the hair is already in a process of turning gray people assume hair is turning gray because of being plucked. A hair is like a tree. It has its roots inside the scalp. Pulling a hair out is like pulling a tree out of the soil along with its roots. How can we say that pulling a tree out of the soil will cause more trees to grow?. (Author by:, "Dr. Khawar Nazir Dermatologist Lahore").