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    GlossaryHair Shaft (Hair fiber)

    visible part of hair extending above the skin's surface

    The hair shaft is the visible part of the hair that extends above the skin's surface. It is composed of three layers: the cuticle (outer layer), the cortex (middle layer), and the medulla (inner layer). The hair shaft is primarily made of keratin, a protein that provides strength and resilience. Understanding the structure of the hair shaft is crucial for professionals in dermatology and cosmetology, as it influences hair health, texture, and response to treatments.

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      community I'm gonna be bald by 20 and I'm not even exagerrating. Wtf do I even do?

      in Chat  77 upvotes 2 years ago
      A 16-year-old is experiencing early male pattern baldness and is considering using Minoxidil now and Finasteride after turning 18. Another user shared a positive experience with topical Minoxidil and Finasteride, noting improvement in hair thickness and no side effects.

      community How obvious is it that I am using hair fibers to thicken my hairline?

      in Product  175 upvotes 4 months ago
      The user uses Toppik hair fibers to thicken their hairline and has switched from finasteride to dutasteride and oral minoxidil, noticing more hair thickening. Most responses indicate the hair fibers are not noticeable, and many suggest the user doesn't need them as their hair looks natural and good for their age.

      community LeBron James has the most mysterious hair

      in Progress Pictures  166 upvotes 1 year ago
      LeBron James likely uses hair transplants and possibly hair fibers or sprays to maintain his hairline, but his crown remains problematic. Despite his wealth, he hasn't fully resolved his hair loss, leading to speculation about his treatments and choices.

      community First pics Jan 2025 Others today

      in Progress Pictures  361 upvotes 9 months ago
      The user experienced significant hair regrowth using finasteride, minoxidil, and microneedling, with plans to continue treatment. They are pleased with the results, noting increased hair density and a restored hairline.