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research The Hair Follicle Bulge: A Niche for Adult Stem Cells

19 citations , July 2011 in “Microscopy and Microanalysis”

This article reviews the role of adult stem cells in tissue homeostasis and wound repair, focusing on their regulation within the murine hair follicle's specialized niche, but it presents no new findings.

research 14-3-3σ Is Required for Club Hair Retention

8 citations , March 2010 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study found that weakened anchorage of hair shafts, associated with the abnormal expression of 14-3-3σ, may contribute to alopecia in Er/+ mice.

research Loose anagen hair of childhood: The phenomenon of easily pluckable hair

85 citations , February 1989 in “Journal of The American Academy of Dermatology”

This case report describes a newly identified condition called loose anagen hair of childhood, characterized by easily pluckable hair in two young boys, with variable duration and no scalp inflammation or scarring.

research A rare pediatric case of loose anagen hair syndrome

January 2026

Loose anagen hair syndrome in children may improve with age, but treatment results vary.

Interest of Silybum Marianum Extract, Manganese PCA, and Lespedeza Capitata Extract in a New Anti-Hair Loss Serum to Stimulate Hair Growth and Prolong Anagen Phase

research 586 Interest of Silybum marianum extract, Manganese PCA and Lespedeza capitata extract in a new anti-hair loss serum to stimulate hair growth and prolong anagen phase

November 2022 in “Journal of Investigative Dermatology”

In this study, a serum containing Silybum marianum extract, Manganese PCA, and Lespedeza capitata extract improved hair growth and prolonged the anagen phase in a human scalp skin model.

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Community Join

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community Everything you ever wanted to know about Pelage Pharma's PP405: how it works and what to expect

126 upvotes 3 months ago

PP405 may encourage earlier hair growth and slightly increase visible hair count but does not reverse hair follicle miniaturization in male pattern baldness. It does not address damage to the dermal papilla or broken Wnt signaling.

community Nice product I discovered, thought I would share.

in Treatment 456 upvotes 1 year ago

A product that makes hair look thicker and healthier without promoting regrowth. Discussions include treatments like minoxidil, finasteride, red light therapy, and a serum with caffeine and peptides, with mixed effectiveness opinions.

community Hair Shaft Diameter and Density Comparison

13 upvotes 4 weeks ago

The conversation discusses differences in hair shaft diameter and density between thinning and denser areas on the scalp. Treatments mentioned include Minoxidil, finasteride, and dutasteride.

community FDA Policy Shift Explained: What It Actually Means for PP405, VDPHL-01, Breezula and Hair Loss Drug Timelines

in Research/Science 42 upvotes 6 months ago

The FDA policy change may speed up approval for hair loss drugs like PP405, VDPHL-01, and Breezula by potentially eliminating the need for a second confirmatory Phase 3 trial. Approval timelines could be as early as 2028 for some treatments if Phase 3 results are strong.

community Recent trials investigating mesenchymal stem cell derived exosomes demonstrate significant increases in anagen duration and hair shaft caliber by upregulating Wnt/beta-catenin pathways.

4 upvotes 3 weeks ago

Exosomes from mesenchymal stem cells can increase hair growth by enhancing anagen duration and hair shaft thickness through the Wnt/beta-catenin pathway. Phase 2 trials show improved hair counts over 24 weeks.

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Learn

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learn Thymosin Beta 4

learn Cetirizine

How does cetirizine reduce inflammation linked to hair loss? Cetirizine is proposed to lower prostaglandin D2 and raise prostaglandin E2 around hair follicles; three small trials of a compounded 1% topical report modest increases in hair density and shaft thickness, with minoxidil doing better head-to-head. Topical cetirizine is off-label and unapproved for hair loss, and the evidence is too thin to call it effective or safe.

learn Hair Multiplication

extract, clone, and reinsert your own hair cells

learn Osteopontin

signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss

learn Adenosine

nucleoside used for hair regrowth stimulant properties

learn Valproic acid

an anticonvulsant repurposed for hair loss via histone inhibition

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Clinics

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Experts

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SMP Specialist
Hairo Fallas
Newark, NJ, United States

Hairo Fallas