There is Propecia which is a prescription you can obtain from your doctor which only suggests you will keep the hair you still have and comes with side effects. Surgical transplants which are also common. They can be painful, expensive and very time consuming. You can still continue to lose the remaining hair.
Then there is non-surgical hair restoration. It will give you a full head of hair that is 100% human, beautiful, vibrant, blows in the wind. It is virtually undetectable to the human eye and is easy to maintain.