With premature hair loss, the hair fails to grow back, and at an earlier pre-set age than with normal hair loss. Each hair follicle on our body has a genetically pre-determined number of times it will replace itself. For most people, this pre-set number is adequate to last a lifetime. Other people will notice a little thinning of the hair usually beginning in the forties or fifties. This type of hair loss is programmed into our DNA, and onset of hair loss typically begins in the late teens and in the twenties, and is associated with elevated levels of a type of testosterone.
Men usually notice localized balding, either at the temples, the top of the head, or at the crown.
Women usually notice thinning on the top first, but then see that their hair is beginning to thin all over. Again, as with hair loss associated with normal aging, hair is lost at a normal rate. The lost hair simply doesn't grow back, which is why the process occurs over a long period of time. It is believed that the solution, applied to the affected areas of the scalp twice daily, dilates the blood vessels feeding the hair follicles, and stilmulates regrowth of hair as a result. If it works for you, continued use for the rest of your life is required to keep the regrown hair.