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Glossary Perifollicular

area surrounding hair follicle

Perifollicular refers to the area surrounding a hair follicle. In medical and dermatological contexts, this term is often used to describe conditions or observations, such as inflammation or fibrosis, that occur around the hair follicles. For example, perifollicular inflammation is a common feature in certain types of hair loss, like alopecia areata, where the immune system attacks the hair follicles.

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research Extracellular Vesicles for Androgenetic Alopecia: Current Evidence, Mechanisms, and Clinical Prospects

September 2026 in “International Journal of Nanomedicine”

This review discusses the potential of extracellular vesicles as a minimally invasive treatment for androgenetic alopecia, but emphasizes that most research is still in preclinical stages and more clinical trials are needed.

research Exosome-Based Therapies: Protocol Development for Androgenetic Alopecia

November 2025 in “Journal of Craniofacial Surgery Open”

This study highlights exosome-based therapies as promising treatments for androgenetic alopecia, detailing protocol development, quality control measures, and clinical application examples, with mesenchymal stem cell-derived exosomes improving hair density in a case study without adverse effects.

research The Central Role of Fibroblasts in Androgenic Alopecia: a systematic umbrella review and meta-meta-analysis

January 2026 in “Open MIND”

This upcoming review will investigate the role of hair follicle fibroblasts in androgenetic alopecia, focusing on their interactions with androgens and impact on cellular signaling and fibrosis.

research Next Generation Therapeutics for Androgenetic Alopecia

January 2026 in “OSF Preprints (OSF Preprints)”

In this study, researchers presented a novel therapeutic approach for androgenetic alopecia combining AR-PROTAC degradation with regenerative strategies and evaluated the potential of GT20029 as a topical treatment, proposing a three-phase protocol and future research hypotheses.

research LB965 Follicular trochanters: A potential mechanism for stem cell depletion in scarring alopecia

June 2020 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study found that fibrosis-associated trochanters in central centrifugal cicatricial alopecia are enriched with hair follicle stem cells and may indicate a disrupted stem cell niche contributing to scarring.

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community Reducing Fibrosis in Hair Loss: Topical Pirfenidone

59 upvotes 5 months ago

Topical pirfenidone is highlighted as an effective anti-inflammatory and anti-fibrotic treatment for hair loss, particularly in addressing perifollicular fibrosis, which may enhance the effectiveness of standard treatments like finasteride and minoxidil. The user also uses calcipotriol, MCT oil, ciclopirox shampoo, and benzoyl peroxide shampoo as part of their regimen.

community Dental Cavitations, Inflammatory Cytokines (RANTES/CCL5) and Hair Loss

2 months ago

Dental cavitations and their potential link to hair loss through systemic inflammation. The user experienced hair regrowth after dental surgery, suggesting a connection between oral health and hair loss, but this theory is not widely accepted or proven.

community PP405 Won’t Work: Follicle Is Miniaturized, Fibrosed, And Missing Key Support Cells

7 months ago

PP405 is ineffective for miniaturized, fibrosed hair follicles in androgenetic alopecia. AMP303 may activate hair follicle stem cells, but minoxidil and finasteride are still the main treatments.

community Microneedling Is Useless, Dangerous, and Overhyped

1 upvotes 3 months ago

Microneedling is debated as a hair loss treatment, with some arguing it is ineffective and potentially harmful, while others claim it enhances absorption of treatments like minoxidil and can be effective when combined with other methods. Alternatives like tretinoin are suggested for better results without the risks associated with microneedling.

community Why does the same hormone grow your beard and destroy your hairline?

44 upvotes 4 months ago

DHT promotes beard growth but causes scalp hair loss due to inflammation and fibrosis. Treatments like finasteride and minoxidil help with hormonal signals and blood flow but don't address underlying inflammation.

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learn Follicusan

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