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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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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...
Saw Palmetto: A Hair Growth Miracle? Mixed Evidence, Mixed Results
By Perfect Hair Health Team
Aug 2, 2019

Saw Palmetto: A Hair Growth Miracle? Mixed Evidence, Mixed Results

Saw palmetto reduces DHT levels and may improve hair loss, with one study citing hair regrowth in 38% of men. However, the extract is not as effective as finasteride. Saw palmetto is also unregulated, so there are no best practices for harvesting, manufacturing, or extraction. Consequently, its DHT-...
The Best Diet For Hair Loss? Here’s What Everyone Gets Wrong
By Perfect Hair Health Team
Jul 17, 2019

The Best Diet For Hair Loss? Here’s What Everyone Gets Wrong

The diet-hair loss connection is complicated. A bad diet is more closely linked to telogen effluvium (a form of hair loss) than it is pattern hair loss (androgenic alopecia). Contrary to popular belief, the best foods and diets to stop hair loss will vary for everyone. Here’s why.
Do Scalp Massages Improve Hair Loss From Androgenic Alopecia? (Our 2019 Study)
By Perfect Hair Health Team
May 14, 2019

Do Scalp Massages Improve Hair Loss From Androgenic Alopecia? (Our 2019 Study)

Scalp massages may improve androgenic alopecia (AGA) – with response rates reaching 75%+ by eight months of effort. Some people also see significant hair regrowth. However, the therapy is time-intensive and requires commitment. Diffuse thinners should confirm they have AGA before trying the massages...
Nutrient Deficiencies And Hair Loss: A Master Breakdown
By Perfect Hair Health Team
Jun 19, 2018

Nutrient Deficiencies And Hair Loss: A Master Breakdown

Research shows that severe, prolonged nutrient deficiencies can cause hair loss… but that deficiencies this severe are rare in the first world. Paradoxically, studies also reveal that first-world hair loss sufferers often have low-grade nutrient deficiencies. So what’s the real story? Th...
Brotzu Lotion For Hair Loss? Maybe, Maybe Not. (See Photos)
By Perfect Hair Health Team
May 24, 2018

Brotzu Lotion For Hair Loss? Maybe, Maybe Not. (See Photos)

In 2016, Brotzu Lotion made headlines as a potential hair loss cure. But does this topical actually live up to its hype? Yes and no. On the positives, Brotzu Lotion (now branded as Trinov™) might stop the progression of pattern hair loss. It can also improve alopecia areata. But is it better than mi...
Hair Loss And SIBO: How To Treat Gut Dysbiosis
By Perfect Hair Health Team
Nov 10, 2017

Hair Loss And SIBO: How To Treat Gut Dysbiosis

Is small intestinal bacterial overgrowth (SIB) connected to hair loss? Potentially… especially among the female hair loss sufferers with whom I’ve worked. SIBO may not only drive widespread nutrient deficiencies, but also contribute to diffuse thinning (telogen effluvium). If you’r...
L. Reuteri For Hair Loss: A Complete Review
By Perfect Hair Health Team
Jul 26, 2017

L. Reuteri For Hair Loss: A Complete Review

Lactobacillus reuteri (l. reuteri) may raise testosterone, improve vitamin D synthesis, and increase hair quality (in rats). Once found in 40% of human guts, this bacteria is now only present in a small fraction of people. So if we supplement with l. reuteri, will we experience hair regrowth? This a...
P. Acnes (Bacteria That Causes Acne) Linked To Hair Loss: What To Do About It
By Perfect Hair Health Team
Jun 28, 2017

P. Acnes (Bacteria That Causes Acne) Linked To Hair Loss: What To Do About It

Can the trillions of bacteria living in our gut and skin influence our predisposition to acne and hair loss? Ten years ago, the answer was, “no.” But today researchers are changing their tune. Evidence shows that the non-human bacteria living in (and on) us — known as our microbiome — helps regulate...

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.