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    GlossaryHair Medulla

    innermost layer of a hair strand, often containing air spaces

    The hair medulla is the innermost layer of a hair strand, often composed of soft, spongy cells that may contain air spaces. While its exact function is not fully understood, it is thought to contribute to the hair's overall strength and may play a role in the hair's ability to insulate. Not all hair types have a medulla, and its presence can vary between individuals and even among different hairs on the same person.

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      community My hair became curly after 9 months on fin + min. How common is this?

      in Update  69 upvotes 1 day ago
      Hair texture changes, such as hair becoming curly, are common when using treatments like finasteride and minoxidil. Users report various experiences with these treatments, including changes in hair density and texture, with some using additional products like alfatrodial, fluridil, and pyrilutamide for hair maintenance.

      community Bryan Johnson and his Hair routine, what's the point?

      in Hair Systems  24 upvotes 2 days ago
      Dutasteride and high-dose Minoxidil are the primary treatments maintaining hair, with additional supplements and therapies like red light offering minimal extra benefit. The discussion criticizes promoting expensive hair care products when basic medications are doing most of the work.

      community Hair transplant #1 7 month update

      in Is this regrowth?  4 upvotes 2 days ago
      The user started oral minoxidil and finasteride two months after a hair transplant and plans to switch to dutasteride, using Nizoral and Mossi shampoos. They are considering a second transplant in Tijuana and using hair fibers and mousse for styling while waiting for medication effects.