A Novel Cosmetic Approach to Treat Thinning Hair

    December 2011 in “ British Journal of Dermatology ”
    Michael Davis, Jayakar Thomas, Samuel Van de Velde, Ying L. Boissy, Thomas L. Dawson, R. Iveson, Khiry Sutton
    From the encyclopedia
    Caffeine →

    the stimulant you know and love can be used topically to stimulate hair

    Niacinamide →
    Panthenol →
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    Studysummary The researchers reported that a novel leave-on treatment containing caffeine, niacinamide, panthenol, dimethicone, and an acrylate polymer significantly increased the diameter and improved the mechanical properties of scalp hair fibers, suggesting it may help mitigate thinning hair. Our plain-language summary of this paper — not a Tressless recommendation.
    The study from P&G Beauty & Grooming Research and Development explored a cosmetic treatment (CNPDA) that includes caffeine, niacinamide, panthenol, dimethicone, and an acrylate polymer, aimed at treating thinning hair by increasing hair fiber diameter. The treatment was found to significantly increase hair fiber diameter by 2-5 µm, which equates to an approximate 10% increase in cross-sectional area, and improve the hair's mechanical properties, making it more supple and resistant to breaking. The study demonstrated that the active ingredients penetrated the hair fiber, enhancing both tensile and torsional properties, which could benefit individuals with thinning hair by making it easier to style and less likely to break. However, the study did not mention the number of participants, which is crucial for determining its reliability.
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