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Explore the science behind hair loss and hair growth. Our in-depth articles cover topics ranging from natural remedies to pharmaceuticals to breakthroughs in hair loss science. Want to request an article topic? Contact us.

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How Often Do I Need To Apply Topical Finasteride?
By Perfect Hair Health Team
Feb 23, 2023

How Often Do I Need To Apply Topical Finasteride?

Is a single daily topical finasteride application enough to significantly reduce DHT levels and regrow hair? It depends on the dilution of topical finasteride, the application volume (in mL), the carrier ingredients, how long that topical finasteride is left on the scalp prior to washing it out, and...
How Often Do I Need To Take Oral Finasteride?
By Perfect Hair Health Team
Feb 22, 2023

How Often Do I Need To Take Oral Finasteride?

Oral finasteride is prescribed at 1 mg daily to treat androgenic alopecia (AGA). However, clinical studies suggest that doses as low as 0.2 mg daily can reduce levels of dihydrotestosterone (DHT) nearly the same as 1.0 mg daily doses, and improve hair counts similarly to 1 mg daily. But do these low...
How Long Does Finasteride Stay in Scalp Tissue?
By Perfect Hair Health Team
Feb 20, 2023

How Long Does Finasteride Stay in Scalp Tissue?

Finasteride is an FDA-approved hair loss treatment, with clinical studies showing that the drug lowers levels of the hormone dihydrotestosterone (DHT) by 60-70%, and in doing so, improves outcomes of androgenic alopecia (AGA) for 80-90% of the men who try to the drug. But how long do finasterideR...
How Long Does Finasteride Stay in the Bloodstream?
By Perfect Hair Health Team
Feb 17, 2023

How Long Does Finasteride Stay in the Bloodstream?

Oral finasteride is an excellent option for men wanting a ‘hands-free’ approach to hair maintenance. However, some men decide to temporarily or discontinue use of the drug to troubleshoot side effects, conceive, or even start donating blood. Under these circumstances, how long does finasteride stay ...
What’s the Best Dose of Finasteride for Hair Loss?
By Perfect Hair Health Team
Feb 16, 2023

What’s the Best Dose of Finasteride for Hair Loss?

The best daily dose of finasteride should strike the balance between minimizing drug exposure (and thereby side effect risks) while maximizing drug efficacy (and thereby hair regrowth). While the FDA has approved 1 mg daily doses of finasteride for androgenic alopecia, there’s also evidence th...
What Is Post-Finasteride Syndrome (PFS)? Is It Real? And What Is Its Prevalence?
By Perfect Hair Health Team
Feb 16, 2023

What Is Post-Finasteride Syndrome (PFS)? Is It Real? And What Is Its Prevalence?

Post-Finasteride Syndrome (PFS) is a term used to describe persistent sexual or cognitive side effects from finasteride, even months after quitting the medication. The existence of PFS is hotly debated amongst hair loss researchers, endocrinologists, and dermatologists. In this article, we’ll ...
Can I Make Topical Finasteride By Crushing Pills?
By Perfect Hair Health Team
Feb 15, 2023

Can I Make Topical Finasteride By Crushing Pills?

It’s possible to make homemade topical finasteride by crushing pills. However, some pills have a protective coating that may prevent them from dissolving in a topical. Under these circumstances, any coating must be removed prior to crushing, and even then, not all crushed debris will dissolve. For t...
Can I Make My Own Topical Finasteride?
By Perfect Hair Health Team
Feb 14, 2023

Can I Make My Own Topical Finasteride?

Compounding pharmacies can charge $50-$100 per month to formulate topical finasteride. This has led many users to wonder if they can save money by making topical finasteride at home – either by crushing finasteride pills or diluting pre-purchased topical finasteride. Both options are possible, but r...
If I Am Planning a Family, Should I Stop Taking Finasteride? (Men & Women)
By Perfect Hair Health Team
Feb 7, 2023

If I Am Planning a Family, Should I Stop Taking Finasteride? (Men & Women)

Females using oral finasteride are advised to quit the drug at least one month before conceiving, as well as throughout pregnancy and breastfeeding. But what about men? The evidence is nuanced. Some clinicians claim that finasteride use for men during windows of conception poses no risk to a develop...
Will Finasteride Lower My Libido?
By Perfect Hair Health Team
Jan 24, 2023

Will Finasteride Lower My Libido?

Finasteride is widely regarded as the gold-standard treatment for male pattern hair loss, with 80-90% of men responding favorably to the drug. At the same time, the number one reason people avoid this hair loss medication is the fear of lower libido. Online reports of finasteride’s sexual side effec...

Stop guessing which hair loss
treatments actually work

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You’ll get the facts on nine “natural” and “conventional” hair loss treatments: how they work, how much hair they’ll regrow, their limitations, and what their marketers don’t want you know.