Effective hair regrowth treatment, free ebook for Windows. Modern medical research has focused on ways to reopen and stimulate dead hair follicles, so that hair growth can reoccur naturally, as well as keep the healthy follicles healthy. One ingredient in many hair loss products is minoxidil. Research studies have shown that in about 80 percent of the participants, products containing this ingredient are effective in slowing hair loss loss and, in some, causing regrowth to occur. Research shows that male pattern baldness is the result of the production of DHT, a product of enzyme reaction on testosterone. DHT causes hair follicles to shrink and thus cease producing new hair.