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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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Does Wegovy Cause Hair Loss?
By Cassie Hopton, PhD
Jun 19, 2026

Does Wegovy Cause Hair Loss?

GLP-1 medications like Ozempic and Wegovy are transforming weight loss and diabetes care, but increasing reports of hair loss have raised concerns. Are these treatments really causing shedding, or is something else at play? In this article, we examine the current evidence, explore the possible mecha...
Does Semaglutide Cause Hair Loss?
By Cassie Hopton, PhD
May 22, 2026

Does Semaglutide Cause Hair Loss?

GLP-1 medications like semaglutide have transformed obesity and diabetes treatment, helping millions lose weight and improve metabolic health. But some users report an unexpected side effect: hair shedding. Is semaglutide actually responsible? In this article, we explore the scientific evidence, the...
Does Dandruff Cause Hair Loss?
By Cassie Hopton, PhD
May 15, 2026

Does Dandruff Cause Hair Loss?

Dandruff is more than a cosmetic nuisance: it often reflects scalp inflammation that can disrupt the hair cycle. While dandruff itself doesn’t directly cause hair loss, it may trigger shedding and worsen conditions like pattern hair loss. Understanding the root cause of dandruff and treating it effe...
The Misleading Results Of The Pumpkin Seed Oil-Hair Loss Study
By Perfect Hair Health Team
Dec 16, 2025

The Misleading Results Of The Pumpkin Seed Oil-Hair Loss Study

People looking for natural solutions to hair loss often stumble upon pumpkin seed oil. After all, many articles claim that a 2016 study showed this supplement can regrow hair. But these articles are missing a key detail: that 2016 study wasn’t on pumpkin seed oil; it was on an herbal blend. Wh...
Topical Latanoprost For Hair Loss: Results, Doses, & Side Effect Concerns
By Perfect Hair Health Team
Dec 15, 2025

Topical Latanoprost For Hair Loss: Results, Doses, & Side Effect Concerns

For androgenic alopecia, clinical studies suggest that ~0.1 mg daily of topical latanoprost can improve hair counts, with visual improvements occurring in 30-50% of hair loss patients over 6-8 months. Telehealth brands are prescribin doses 10-20 times higher than what was clinically studied, thus po...
Nutrafol Review: Half-Truths, Cherrypicked Data, & Misleading Study Results
By Perfect Hair Health Team
Nov 8, 2025

Nutrafol Review: Half-Truths, Cherrypicked Data, & Misleading Study Results

Nutrafol is a hair loss supplement praised by media, endorsed by doctors, and supported by clinical studies. At first glance, it seems like the perfect option for anyone interesting in fighting hair loss naturally. Unfortunately, during our investigation, we found that (1) Nutrafol’s 2018 clin...
Vitamin B1 for Hair Loss: Good or Bad for Hair Loss?
By Perfect Hair Health Team
Nov 8, 2025

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...
Which Vitamin Deficiences Can Cause Hair Loss?
By Sarah King, PhD
Dec 11, 2024

Which Vitamin Deficiences Can Cause Hair Loss?

Hair loss is a complex issue influenced by various factors, including vitamin deficiencies. We explored the impact (or lack thereof) of deficiencies in five vitamins – Vitamin D, Biotin, Vitamin B12, Vitamin E, and Vitamin A – on hair health and whether supplementation can aid hair regrowth. While d...
Zinc Supplements For Hair Loss: A Hard Look Into The Science
By Sarah King, PhD
Apr 25, 2024

Zinc Supplements For Hair Loss: A Hard Look Into The Science

Zinc is a popular trace element found in hair growth supplements. Animal studies suggest that zinc is required for healthy hair cycling. Human studies suggest that zinc deficiencies can cause hair loss from telogen effluvium. One study found that zinc sulfate might help with non-descript hair loss i...
Understanding Evidence Quality | How Hair Loss Companies Cheat Clinical Trials
By Perfect Hair Health Team
Sep 6, 2023

Understanding Evidence Quality | How Hair Loss Companies Cheat Clinical Trials

In this guide, we’ll expose how big-brand companies in the hair loss industry cheat their clinical study results – all so they can convince hair loss sufferers to buy products that probably won’t work for them. Due to a broad definition of “hair loss” and “hair growth&#...

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.