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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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Topical Finasteride: The Best Dosage for Maximizing Regrowth and Minimizing Side Effects
By Perfect Hair Health Team
Mar 21, 2022

Topical Finasteride: The Best Dosage for Maximizing Regrowth and Minimizing Side Effects

Since earning FDA approval in 1997, Finasteride has been one of the most widely used hair loss drugs. To avoid potential sexual side effects, many opt for topical finasteride in hopes of isolating the drug’s DHT-reducing effects on the scalp. However, at certain doses, topical finasteride can enter ...
How Long After Stopping Minoxidil Before We Lose Our Hair Gains?
By Perfect Hair Health Team
Mar 10, 2022

How Long After Stopping Minoxidil Before We Lose Our Hair Gains?

Studies show that within 3 months of quitting minoxidil, any new hair growth is lost and, worryingly, our hair loss temporarily worsens before returning to baseline. But encouragingly, new studies are revealing potential ways to mitigate any shedding related to minoxidil withdrawals. In fact, a 2020...
Exercise and Hair Loss: Is There a Connection?
By Perfect Hair Health Team
Mar 10, 2022

Exercise and Hair Loss: Is There a Connection?

Does exercise cause hair loss? And if so, what types of activities should hair loss sufferers avoid? The answers aren’t so straightforward. A 2017 study found that people with androgenic alopecia (AGA) were more likely to exercise longer and harder than those who weren’t balding. At the ...
Three Ways to Improve Minoxidil Results
By Perfect Hair Health Team
Mar 5, 2022

Three Ways to Improve Minoxidil Results

Minoxidil is one of the most widely used hair loss products on the market. And yet, so much about this growth activating “pro-drug” remains unknown. Despite its FDA approval, results are not guaranteed. In fact, around 50% of hair loss sufferers are non-responders. Recent research sugges...
How Long Does a Hair Transplant Last?
By Perfect Hair Health Team
Mar 5, 2022

How Long Does a Hair Transplant Last?

Fifty years ago, studies on hair transplants indicated that transplanted hairs never thin. But a 2020 study now suggests that hair transplants can thin… and even just four years post-surgery. What could explain these conflicting results, and what can we make of the new data? This article uncov...
Fecal Microbiota Transplants (FMT) & Accidental Hair Regrowth: Studies, Anecdotes, & Photos
By Perfect Hair Health Team
Feb 25, 2021

Fecal Microbiota Transplants (FMT) & Accidental Hair Regrowth: Studies, Anecdotes, & Photos

Studies suggest that fecal microbiota transplants (FMTs) can recolonize the gut microbiome, dampen autoimmunity (i.e., allergies), and even save people’s lives from C. difficile infections. Fascinatingly, some people who’ve undergone an FMT have later reported an unintended benefit: hair...
The Microbiome and Hair Loss: A Scientific Review [2021]
By Perfect Hair Health Team
Feb 23, 2021

The Microbiome and Hair Loss: A Scientific Review [2021]

Ten years ago, many researchers dismissed the possibility that gut bacteria could influence hair loss and hair growth. Today, they’re changing their tune. Research teams have now demonstrated that changes to our gut microbiome are linked to both stress-related hair loss and alopecia areata. Fa...
Helminthic Therapy (Hookworms) for Hair Loss? A Scientific Review
By Perfect Hair Health Team
Jan 22, 2021

Helminthic Therapy (Hookworms) for Hair Loss? A Scientific Review

Helminthic therapy is an experimental therapy whereby people voluntarily infect themselves with parasites known as hookworms. It may sound gruesome, but these parasites have been shown to modulate our immune systems and improve autoimmune disorders ranging from allergies to multiple sclerosis. Fasci...
Apple Cider Vinegar (ACV) for Hair Loss: Fact or Fiction?
By Perfect Hair Health Team
Nov 17, 2020

Apple Cider Vinegar (ACV) for Hair Loss: Fact or Fiction?

Health bloggers say that apple cider vinegar (ACV) is great for hair. Why? They claim that ACV is antimicrobial, so it can help fight off microorganisms linked to hair shedding: namely, Malassezia and P. acnes. However, the evidence surrounding ACV and hair loss is much more nuanced. For instance, r...
Vitamin B1 for Hair Loss: Good or Bad for Hair Loss?
By Perfect Hair Health Team
Nov 4, 2020

Vitamin B1 for Hair Loss: Good or Bad for Hair Loss?

Vitamin B1 – also known as thiamine (or thiamin) – is part of the B-complex of vitamins. In mouse models, severe vitamin B1 deficiencies lead to rapid weight loss, neurological decline, and hair loss. However, thiamine repletion studies (as well as studies on humans) suggest that this hair loss seem...

Stop guessing which hair loss
treatments actually work

Instead, just read our cheat sheet

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.