For scalp hair, this cycle takes years. For beard hair and other hair around your body, such as your eyebrows, this cycle only lasts a couple months at most. Rogaine’s main function is vasodilation.

However, it can take some time before a person sees any benefits. Rogaine ... 1 mL of solution. People should apply 1 mL of the solution to damp or towel-dried hair and massage it into the scalp ...

As with Rogaine, Propecia works best in younger people with limited hair loss. Results can be seen anywhere from a couple of months to a year after beginning ... M.D., head of clinical research ...