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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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Reishi Mushroom For Hair Loss: The Problem With This DHT Blocker
By Perfect Hair Health Team
Oct 7, 2020

Reishi Mushroom For Hair Loss: The Problem With This DHT Blocker

As a hair loss treatment, reishi mushroom’s popularity seems more rooted in marketing than in scientific evidence. Studies show that reishi mushroom extract may lower DHT levels and suppress prostate growth – two things closely linked to male pattern hair loss. However, these studies were done...
Vitamin B12, Hair Loss, & Methylation: Does This Vitamin Improve Hair Growth?
By Perfect Hair Health Team
Sep 16, 2020

Vitamin B12, Hair Loss, & Methylation: Does This Vitamin Improve Hair Growth?

Does vitamin B12 help regrow hair? Mechanistically, a lot of evidence suggests yes: vitamin B12 is important for DNA synthesis, hemoglobin production, and methylation – all of which play a role in healthy hair growth. Unfortunately, studies also show that people with and without hair loss have simil...
Vitamin E For Hair Loss: Fact Versus Fiction (Tocopherols & Tocotrienols)
By Perfect Hair Health Team
Jul 23, 2020

Vitamin E For Hair Loss: Fact Versus Fiction (Tocopherols & Tocotrienols)

Vitamin E is an essential nutrient and antioxidant, but its usefulness to treat hair loss is incredibly limited. Studies show that vitamin E supplements can improve hair loss caused by nutrient deficiencies, and that topical vitamin E might increase local antioxidant activity in the scalps of people...
Selenium & Hair Loss: How This Mineral Hurts (And Helps) Our Hair
By Perfect Hair Health Team
Jul 23, 2020

Selenium & Hair Loss: How This Mineral Hurts (And Helps) Our Hair

Only 15% of people worldwide are at risk of a selenium deficiency – most of whom are in rural pockets of China, Tibet, and Siberia. Moreover, only a fraction of that 15% will have a selenium deficiency severe enough to cause hair loss. Ironically, selenium is one of the most popular ingredients insi...
Alopecia Areata: Causes, Treatments, & Why It’s Reversible | 2020 Review
By Perfect Hair Health Team
Jul 14, 2020

Alopecia Areata: Causes, Treatments, & Why It’s Reversible | 2020 Review

Alopecia areata (AA) is an autoimmune form of hair loss that impacts 2% of people worldwide. It’s caused by an unknown driver of inflammation that disrupts hair follicle stem cells, leading to slick-bald patches and (sometimes) exclamation-mark hairs. Fascinatingly, AA can spontaneously revers...
Iodine For Hair Loss? Think Twice About Supplementing
By Perfect Hair Health Team
Jul 9, 2020

Iodine For Hair Loss? Think Twice About Supplementing

Less than 10% of Americans are iodine deficient, and even fewer have a hair loss disorder caused by low iodine intake. Ironically, iodine is a trace element featured in many top-selling hair loss supplements, allegedly to help support the thyroid. This article separates fact versus fiction about iod...
Vitamin A (Beta Carotene, Retinol) For Hair Health: Worth Avoiding?
By Perfect Hair Health Team
Jul 2, 2020

Vitamin A (Beta Carotene, Retinol) For Hair Health: Worth Avoiding?

Less than 1% of Americans are deficient in retinol (vitamin A). Even still, vitamin A and its precursors are featured in dozens of popular hair loss supplements. What most people don’t realize is that long-term vitamin A supplementation is actually associated with an increased risk of mortalit...
Biotin For Hair Loss: Why This Supplement Is Overhyped & Oversold
By Perfect Hair Health Team
Jun 1, 2020

Biotin For Hair Loss: Why This Supplement Is Overhyped & Oversold

When it comes to hair loss supplements, biotin is king. Unfortunately, biotin’s popularity resides more so in clever marketing than in sound science. Studies have shown that biotin levels don’t differ between people with and without hair loss. Moreover, in the U.S., biotin deficiencies s...
Diffuse Thinning: Causes, Implications, And Steps For Regrowth (See Photos)
By Perfect Hair Health Team
Jan 10, 2020

Diffuse Thinning: Causes, Implications, And Steps For Regrowth (See Photos)

Diffuse thinning is a presentation of hair loss linked to androgenic alopecia, stress, and a variety of chronic conditions. If you’re dealing with diffuse hair loss, this article reveals its common causes, and a step-by-step guide toward identifying which causes are most relevant to you. The g...
Grey Hair: What Causes It, And Can It Be Reversed? A Scientific Analysis
By Perfect Hair Health Team
Oct 1, 2019

Grey Hair: What Causes It, And Can It Be Reversed? A Scientific Analysis

Gray hair is believed to be caused by (1) the accumulation of free radicals, and (2) the loss of antioxidant activity in the hair follicle bulb. This leads to a loss of melanocyte stem cells and thereby melanocytes (pigment-producing cells). Once believed to be irreversible, there are now several re...

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.