Finasteride, sold under the name "Propecia"
The main active ingredient "finasteride" is the main actor of the medication for baldness sold under the name "Propecia".
Finasteride fights against an enzyme that is in charge of activating the "testosterone" hormone and turning it into DHT.
Given that the active testosterone (DHT) is considered to be one of the main causes of the weakening of hair and hair loss, less DHT means that hair loss will also be less.
However, this molecule does not work on all kinds of baldness.
Finasteride is one of the treatments of choice for many dermatologists only at the first phases of androgenic alopecia and to stabilise alopecia for men aged between 18 and 41. It has not been demonstrated as being effective for hair loss at the final stage.
As it is a medicine, it has side effects, such as erectile dysfunction, ejaculation problems, decrease in libido and a depressed mood.
Moreover, it creates a dependency since, once the treatment has been started, it cannot be suspended. Otherwise, the person would go back to the initial stage between a period of 9 months and a year.