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GlossaryHair Follicle Bulge (bulge)

specific region housing stem cells for hair growth

The hair follicle bulge is a specific region located in the outer root sheath of the hair follicle. It serves as a reservoir for stem cells that are crucial for hair growth and regeneration, as well as for repairing the skin after injury. This area is essential for the cyclical nature of hair growth and plays a significant role in conditions like alopecia.

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Cells Within the Bulge Region of Mouse Hair Follicle Transiently Proliferate During Early Anagen: Heterogeneity and Functional Differences of Various Hair Cycles

research Cells Within the Bulge Region of Mouse Hair Follicle Transiently Proliferate During Early Anagen: Heterogeneity and Functional Differences of Various Hair Cycles

130 citations, January 1994 in “Differentiation”

Mouse hair follicle cells briefly grow during the early hair growth phase, showing that these cells are important for starting the hair cycle.

research Gsdma3 Mutation Causes Bulge Stem Cell Depletion and Alopecia Mediated by Skin Inflammation

54 citations, December 2011 in “American Journal Of Pathology”

A Gsdma3 mutation causes hair loss due to stem cell damage from skin inflammation.

Expression Patterns of MITF During Human Cutaneous Embryogenesis: Evidence for Bulge Epithelial Expression and Persistence of Dermal Melanoblasts

research Expression Patterns of MITF During Human Cutaneous Embryogenesis: Evidence for Bulge Epithelial Expression and Persistence of Dermal Melanoblasts

43 citations, February 2008 in “Journal of cutaneous pathology”

Melanocyte precursors in human fetal skin follow a specific migration pattern and some remain in the skin's deeper layers.

research Canine Follicle Stem Cell Candidates Reside in the Bulge and Share Characteristic Features with Human Bulge Cells

36 citations, April 2010 in “The journal of investigative dermatology/Journal of investigative dermatology”

Canine hair follicles have stem cells similar to human hair follicles, useful for studying hair disorders.

research Differential Expression of Stem Cell Markers in Human Follicular Bulge and Interfollicular Epidermal Compartments

28 citations, March 2010 in “Histochemistry and Cell Biology”

Different markers are found in stem cells of the scalp's hair follicle bulge and the surrounding skin.

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community M32, almost 3 moths, fin oral 1,25g/daily + min 2xday + keto 2% shapoo 1/week microneedling once a week

in Progress Pictures 31 upvotes 1 year ago

A 32-year-old man has been treating his hair loss with daily oral finasteride (1.25g), twice-daily topical minoxidil, weekly ketoconazole 2% shampoo, and weekly microneedling for almost three months, with no side effects from finasteride. He started with a Hamilton Norwood scale rating of 5 and has seen improvement without experiencing pain by using a 0.8mm needle length for microneedling.

community The Worst Hair Loss Condition You (MAY) have: LPP

in Research/Science 43 upvotes 4 months ago

Lichen Planopilaris (LPP) is an autoimmune condition causing permanent hair loss and fibrosis, often misdiagnosed. Treatments include pioglitazone, topical corticosteroids, anti-inflammatory medication, and Jak inhibitors.

community Hair theory Scar tissue and Verteporfin

in Chat 24 upvotes 7 months ago

A user suggests that deeper microneedling with Verteporfin injections might help regrow hair in areas with scar tissue, alongside a DHT blocker. Another user explains that hair loss might be due to reduced Wnt/β-Catenin signaling and suggests that treatments like Minoxidil, Finasteride, and microneedling could potentially reverse it.

community Micro needling 25 days progress. I’ve been on fin and min for 6 months but micro needling has done SO much more to actually restore my hairline

in Progress Pictures 569 upvotes 10 months ago

A user shared a 25-day progress picture showing significant hairline restoration attributed to microneedling, in addition to using minoxidil and finasteride for 6 months. Other users discussed needle length, frequency, and whether the effects of microneedling are permanent.

community Best Microneedle Lengths To Stimulate Stem Cells

in Microneedling 18 upvotes 1 year ago

Microneedling with needle lengths of 1.5mm to 2.5mm to stimulate hair follicle stem cells for potential hair growth. Using needles longer than 2.5mm is not recommended due to risk of puncturing veins in the scalp. A dermastamp is suggested over a roller.

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