Many men taking Finasteride for genetic hair loss want to know one thing: can it permanently switch off DHT, the hormone behind male pattern baldness? Dr. John Watts, a Hyderabad-based dermatologist, trichologist, and hair transplant surgeon, answers a viewer question on exactly this -- and the answer is more nuanced than a simple yes or no.
Why DHT Can't Be Blocked Forever
"DHT is a hormone responsible for male secondary sexual characteristics, including male pattern baldness. It cannot be permanently blocked because testosterone can also convert into DHT," Dr. Watts explained.
That conversion from testosterone to DHT happens continuously in the body. Finasteride works by inhibiting this conversion. It doesn't eliminate DHT altogether -- it reduces how much of it your body produces, which is why the medication helps prevent, and sometimes even reverse, hair loss.
What Happens If You Stop Taking Finasteride
Stopping the medication doesn't reset your hair overnight, but the protective effect does fade. Dr. Watts explains that individuals with androgenetic alopecia may begin losing the hair growth they've gained within two to three months of discontinuing Finasteride.
"If the gap between stopping the medication and restarting it is too prolonged, those with a strong family history of genetic baldness may eventually develop the same baldness pattern that runs in their family," he said.
The Bottom Line on Finasteride and DHT
Finasteride is effective in managing and preventing genetic baldness by reducing the influence of DHT. Its effects are not permanent, and results depend on continuing the medication as prescribed. Anyone considering starting, stopping, or restarting Finasteride should do so under the guidance of a dermatologist.
This article is for educational purposes only and is not a substitute for professional medical advice. Consult a qualified dermatologist for diagnosis and treatment.
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Frequently asked questions
Can Finasteride permanently block DHT?
No. Finasteride inhibits the conversion of testosterone to DHT, but this conversion is an ongoing process in the body, so it cannot be permanently blocked.
What happens if I stop taking Finasteride?
Hair loss may resume within two to three months of stopping the medication, according to Dr. Watts.
Will my baldness pattern definitely return if I stop Finasteride?
If you have a strong family history of genetic baldness and stop the medication for an extended period, you may eventually develop the same pattern that runs in your family.
Do I need to keep taking Finasteride to maintain results?
Yes. Dr. Watts explains that its effects are not permanent, so you need to continue using it as prescribed to maintain results.
