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research Stress-induced sympathetic hyperactivation drives hair follicle necrosis to trigger autoimmunity

November 2025 in “Cell”

This study found that acute stress can cause rapid hair loss by triggering necrosis in hair follicle cells and initiating autoimmunity, revealing a mechanism where stress-induced nerve activity leads to tissue damage and immune system activation.

Histopathological Evaluation of the Effect of Low-Level Laser Therapy on Prevention of Hair Follicle Necrosis in Experimental Cryosurgery-Induced Wounds in Rats

research Histopathological evaluation of the effect of low level laser therapy on prevention of hair follicle necrosis in experimental cryosurgery indued wounds in rats

May 2021 in “Journal of Dermatology and Cosmetic”

This study found that using low-power lasers on cryosurgery-induced wounds in rats can prevent hair follicle necrosis and increase hair follicle numbers, with the experimental group showing significantly more hair follicles than the control group across all time points studied.

research Keratin 17 modulates hair follicle cycling in a TNFα-dependent fashion

169 citations , May 2006 in “Genes & Development”

This study found that keratin 17 and TNFα play interdependent roles in regulating hair follicle cycling, with TNFα required for the anagen–catagen transition and its ablation partially rescuing hair cycling defects in K17-null mice.

research Analysis of Apoptotic Cell Death in Human Hair Follicles In Vivo andIn Vitro

140 citations , December 1998 in “Journal of Investigative Dermatology”

Apoptosis in hair follicles varies by growth phase, with TGF-β possibly starting the catagen phase.

research Exploring Differentially Expressed Genes by RNA-Seq in Cashmere Goat (Capra hircus) Skin during Hair Follicle Development and Cycling

61 citations , April 2013 in “PloS one”

This study identified numerous genes that change expression across the anagen, catagen, and telogen stages of cashmere goat hair follicle development, highlighting key signaling pathways involved.

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Community Join

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community NMN Promotes Cell Proliferation and Hair Growth by Reducing Oxidative Stress

14 upvotes 2 years ago

NMN shows promise in promoting hair growth by reducing oxidative stress and weakening androgens. It may be a beneficial addition to hair loss treatments like Minoxidil and Finasteride.

community Crazy body/facial hair on minoxidil - what to do?

4 upvotes 2 months ago

The user experienced significant hairline improvement using 10mg oral minoxidil and 0.5mg dutasteride daily but also saw increased body and facial hair growth. They are considering reducing the minoxidil dose due to side effects and exploring laser hair removal options.

community Dental technician is convinced that he has found the cause of pattern hair loss

314 upvotes 2 years ago

A dental technician claims malocclusion causes pattern hair loss due to poor scalp circulation. Users debate this, noting treatments like finasteride, minoxidil, and microneedling focus on DHT and blood flow.

community Daily Mail article - How I REVERSED my balding. My barber called my thick head of hair a 'miracle'... this is exactly how I did it:

in Finasteride/Dutasteride 1 upvotes 1 year ago

Finasteride and a hair transplant were used to reverse hair loss, leading to thicker hair and increased confidence. The user received compliments on their improved appearance.

community DIY Dutasteride Mesotherapy....THE ULTIMATE EXPERIMENT WITH RESULTS!

154 upvotes 5 years ago

User tried DIY Dutasteride Mesotherapy for hair loss due to unsatisfactory Finasteride results. Used mesotherapy injection gun and liquid dutasteride for better results and fewer side effects.

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Learn

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learn Neem Oil

natural substance from Neem tree with medicinal and pesticidal properties

learn Stem Cell Factor

learn Niacinamide

How does Niacinamide support the hair follicle’s nutrition? Niacinamide nourishes hair follicles by boosting energy production and supporting antioxidant defenses.

learn oleic acid

How does Oleic Acid support hair follicle strength and growth? Oleic acid strengthens hair follicles by enhancing hydration and reducing inflammation.

learn zinc PCA

Why is zinc important for preventing hair loss and supporting hair follicle function? Zinc is crucial for hair follicle health, supporting growth and repair processes.

learn Scalp Micropigmentation

Will scalp micropigmentation damage my existing hair or follicles? Scalp micropigmentation does not damage existing hair or follicles.

learn Osteopontin

What role does Osteopontin play in protecting and repairing hair follicles? Osteopontin protects and repairs hair follicles by signaling cells to survive and recover.

learn Hair Transplant

Hair transplantation moves DHT-resistant follicles from a donor area (back and sides of the scalp) into thinning or bald areas. The transplanted hair is generally permanent, though surrounding native hair can keep thinning.

learn Latanoprost

glaucoma medication with hair follicle stimulant effects

learn Verteporfin

chemical that might completely regrow follicles from hair transplant extractions

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Clinics

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Experts

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SMP Specialist
Hairo Fallas
Newark, NJ, United States

Hairo Fallas