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Did you mean Hair Follicle Infundibulum?

Glossary Hair Follicle Infundibulum

upper part of the hair follicle extending to sebaceous gland

The hair follicle infundibulum is the upper part of the hair follicle, extending from the opening of the follicle at the skin's surface down to the point where the sebaceous (oil) gland attaches. This region is crucial for the passage of sebum and other substances to the skin's surface, and it plays a role in conditions like acne and folliculitis.

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Research

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research Deciphering the functions of the hair follicle infundibulum in skin physiology and disease

38 citations , September 2014 in “Cell and Tissue Research”

This review explores the infundibulum's role and importance in skin diseases and emphasizes the need for further research into its biology and potential therapeutic targeting, but it presents no new findings.

research Early stage alopecia areata is associated with inflammation in the upper dermis and damage to the hair follicle infundibulum

22 citations , June 2013 in “Australasian Journal of Dermatology”

Early stage bald spots are linked to skin inflammation and damage to the upper part of the hair follicle.

research Seborrheic karatosis, a tumor of the infundibular and isthmus of hair follicles: Identification of hair sheath keratins and histopathological features suggesting hair follicle origin.

2 citations , January 1989 in “The Nishinihon Journal of Dermatology”

This study found that seborrheic keratosis lesions contain high levels of hair sheath keratin, suggesting they may originate from the upper hair follicle.

research Single‐Cell Analysis of Late‐Stage Wound‐Induced Hair Follicle Neogenesis Reveals Keratinocyte Heterogeneity and Enrichment of Infundibular Basal Keratinocytes

June 2026 in “Experimental Dermatology”

This study used single-cell RNA sequencing to explore the cellular differences between small and large wound tissues during the hair follicle regeneration stage, revealing variations in keratinocyte subpopulations and extracellular matrix interactions associated with wound size.

Dandruff Is Associated With Perturbations of Hair Follicle Immune Privilege and the Infundibular and Epidermal Immune Microenvironment

research 584 Dandruff is associated with perturbations of hair follicle immune privilege, and the infundibular and epidermal immune microenvironment

November 2022 in “Journal of Investigative Dermatology”

This study observed that dandruff is linked to a weakened immunoprivilege in hair follicles, with reduced Langerhans cells and increased epidermal CD4+ and CD8+ T cell infiltration.

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Community Join

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community Quote from Pelage (PP-405) Spokesperson...

122 upvotes 11 months ago

Pelage is developing a topical hair follicle stem cell therapy, PP405, for non-scarring alopecias like androgenetic alopecia, with Phase III trials planned and a potential market launch by 2027. The treatment may not require continuous use after initial regrowth.

community Fibrosing alopecia in a pattern distribution

in Research/Science 14 upvotes 2 years ago

A user has been experiencing hair loss for 4 years, with treatments like minoxidil, finasteride, and various supplements proving ineffective. They were diagnosed with fibrosing alopecia in a pattern distribution, a condition that may require a combination of anti-inflammatory and hair growth treatments.

community Is Finasteride the only way to reduce scalp DHT?

28 upvotes 10 months ago

A 24-year-old male experienced side effects like low libido and ED after starting finasteride post-hair transplant and is seeking alternatives to reduce scalp DHT. Suggestions include topical finasteride, Xpecia, DHT-reducing shampoos, and switching to dutasteride, with some users reporting fewer side effects with these alternatives.

community Anyone here have a lot of knowledge on hair follicle stem cells and progenitor cells for PP405?

in Chat 4 upvotes 8 months ago

Hair follicle stem cells remain in bald individuals, but progenitor cells do not, raising questions about hair regrowth claims by Pelage. PP405 is discussed as a potential treatment, with skepticism about its effectiveness compared to existing treatments like Minoxidil and Finasteride.

community "Hair Follicle Stem Cells are quiescent 99% of the time and permanently reside in the hair follicle"

in Research/Science 1391 upvotes 1 year ago

Hair follicles are mostly dormant but can be reactivated with treatments like minoxidil, finasteride, and microneedling. A new drug, PP405, shows promise for hair regrowth but may not be available until 2027-2028.

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Learn

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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.