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    Glossary Friction

    resistance encountered when surfaces move against each other

    Friction is the resistance that one surface or object encounters when moving over another. In the context of hair and alopecia, friction can refer to the mechanical stress exerted on hair strands due to rubbing against surfaces like pillows, hats, or even other hair strands, which can lead to hair breakage or loss over time.

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    Research 10 of 1000+

    1. Friction and wear studies of human hair and skin Wear · 2005 · 97 citations
    2. Frictional alopecia of the distal legs: case series and review Dermatology Online Journal · 2016 · 9 citations
    3. Post Herpetic Itch Leading to Frictional Alopecia of Eyebrow and Scalp-A Hitherto Undescribed Phenomenon Indian Dermatology Online Journal · 2023 · 1 citations
    4. Hair-on-hair static friction coefficient can be determined by tying a knot B Biointerfaces 2017
    5. Frictional Alopecia in a Child: An Uncommon Presentation of Lower Limb Hair Loss International Journal of Trichology · 2025
    6. Blinded, Randomized, Quantitative Grading Comparison of Minimally Invasive, Fractional Radiofrequency and Surgical Face-lift to Treat Skin Laxity Archives of Dermatology · 2010 · 115 citations
    7. The efficacy in treatment of facial atrophic acne scars in Asians with a fractional radiofrequency microneedle system 2013 · 51 citations
    8. Fractional Photothermolysis Laser Treatment of Male Pattern Hair Loss Dermatologic Surgery · 2010 · 50 citations
    9. Treatment of acne scars by fractional bipolar radiofrequency energy Journal of cosmetic and laser therapy · 2012 · 48 citations
    10. Current Status of Fractional Laser Resurfacing JAMA Facial Plastic Surgery · 2015 · 44 citations
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    Community 5 of 10

    1. No more hair transplants - a new FDA-cleared fractional laser treatment called FoLix Reddit · 11 Oct 2025
    2. Hair repigmentation of poliosis circumscripta in androgenetic alopecia patient treated with exosomes and fractional picosecond laser Reddit · 4 Mar 2024
    3. Seeing people cure their hairloss in a fraction of the time its taking me to grow a few hairs it killing me Reddit · 25 Apr 2026
    4. Silk pillowcases are such a game changer Reddit · 2 Aug 2023
    5. Finasteride is Good for Heart Health! Reddit · 21 Feb 2024
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