jerry,  for about a year and a half and have not seen even the smallest amount of regrowth. My hair only started visibly growing after doubtfully trying out the natural techniques to re-grow lost hair. http://www.pearlscorniche.com/.  I would sincerely & highly recommend this easy to follow step-by-step guide with pictures to anyone who is suffering from hair loss right now. Anyway, its also a cheaper and effective way of regrow-ing lost hair compared to those unnatural ways which may involve harsh chemicals that may have side effects. Good Luck !