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    GlossaryIsthmus of Hair Follicle

    region between the infundibulum and bulge area of hair follicle

    The isthmus of the hair follicle is a specific region located between the infundibulum (the upper part of the follicle) and the bulge area (where stem cells reside). This section plays a crucial role in the structural integrity and function of the hair follicle, including the anchoring of the hair shaft and the regulation of hair growth cycles.

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      community The MPB itch aka DHT itch is very real.

      in Chat  9 upvotes 3 years ago
      Hair loss itch is caused by DHT attacking follicles and stimulating nerves. Finasteride users who respond well don't experience this itch.

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

      in Research/Science  123 upvotes 4 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.
      If You Have DUPA, PLEASE READ THIS: Everyone Should Be Scalp Biopsied

      community If You Have DUPA, PLEASE READ THIS: Everyone Should Be Scalp Biopsied

      in Research  830 upvotes 1 year ago
      Scalp biopsies are crucial for diagnosing hair loss conditions like Diffuse Unpatterned Alopecia (DUPA) and retrograde hair loss, as treatments like finasteride and dutasteride may not be effective if other conditions are present. Combining PPAR-GAMMA agonists with retinoids could improve treatments for conditions like Lichen Planopilaris.

      community Microneedling depth. Does one length fit all areas of the scalp? Maybe not.

      in Microneedling  52 upvotes 4 years ago
      Microneedling depth should be customized based on hair type and scalp area, with many users finding 0.5-0.6mm effective for miniaturized hairs to avoid damage. Users report varying pain levels and results, with some preferring shorter needle lengths and others using longer ones like 1.75mm for scalp health and density improvement.