How long does it take for treatment to work?

It may take up to three months before you start noticing any improvement in your hair loss. In addition, it can take up to one year to see the full benefits and to tell whether finasteride is working for you. Do not be concerned as this is expected. Also, you’ll need to keep taking finasteride to retain any benefits. When you stop taking it, your hair loss returns over the course of several months (usually 6 to 9 months).