An old drug originally meant to treat osteoporosis could help millions get hair back.
And in the future we should be able to control it with a pill.
Anti-baldness treatments available today work by stimulating hair follicle health or slow down hair loss. There is no available method that promotes the growth of new hair, however. You might have heard of hair transplants, but this typically involves transplanting hair from another area of the hair, like the back of the head, to the bald area of the head