20 citations
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January 2015 in “Journal of cosmetic dermatology” Older people's hair cuticles get more easily damaged and lose protective oils, especially in their 40s and 50s.
2 citations
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October 2022 in “Journal of structural biology” Older thin hair is not just thinner but also has different shape, structure, and stiffness.
February 2025 in “International Journal of Cosmetic Science” Protein carbonylation is a sensitive marker for oxidative damage in hair, especially from light exposure.
59 citations
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November 2015 in “International Journal of Cosmetic Science” Oxidative stress damages hair and contributes to aging, and managing it can help maintain hair health.
4 citations
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November 2016 in “The Journal of Dermatology” Pili torti hair is fragile due to loose keratin filaments and weak disulfide bonds.