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<p>Human hair serves not only as an aesthetic attribute and an expression of individuality but also as a natural barrier against environmental stressors, notably ultraviolet (UV) radiation. However, exposure to UV radiation, particularly UV-B (0.35&#xa0;W/m²), leads to degradation of hair proteins, causing visible and structural damage. The present study aimed to develop effective chemical strategies to protect human hair from UV-induced damage. Hair samples of various types and age groups (10, 25, and 45 years) from both males and females were exposed to UV-B radiation, and the protective effects of two bioactive compounds, vitamin E and γ-oryzanol, were evaluated. Results demonstrated that untreated hair suffered extensive structural damage under UV-B exposure, whereas treatment with vitamin E and γ-oryzanol reduced protein loss by up to 50% compared to controls. The γ-oryzanol emulsion exceeded vitamin E film in attenuating UV-B radiation damage to hair fibers. Structural and morphological assessments using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), spectrofluorometry, and gas chromatography-mass spectrometry (GC-MS) revealed significant preservation of hair integrity in treated samples, with notably greater protection observed in female hair samples. These findings highlight the potential of natural UV-absorbing compounds as sustainable, cost-effective agents for mitigating UV-induced hair damage. This work contributes to the development of protective strategies that maintain hair health and appearance under environmental stress.</p>

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Protective potential of vitamin E and gamma-oryzanol composition against ultraviolet rays-induced scalp hair damage

  • 期刊论文

  • 发表日期：

    2026年5月27日

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  • Gul Afza,
  • Saman Muddasser,
  • Sajjad Hussain Sumrra,
  • Mudassar Zafar,
  • Mujahid Farid,
  • Muhammad Zubair

摘要

Human hair serves not only as an aesthetic attribute and an expression of individuality but also as a natural barrier against environmental stressors, notably ultraviolet (UV) radiation. However, exposure to UV radiation, particularly UV-B (0.35 W/m²), leads to degradation of hair proteins, causing visible and structural damage. The present study aimed to develop effective chemical strategies to protect human hair from UV-induced damage. Hair samples of various types and age groups (10, 25, and 45 years) from both males and females were exposed to UV-B radiation, and the protective effects of two bioactive compounds, vitamin E and γ-oryzanol, were evaluated. Results demonstrated that untreated hair suffered extensive structural damage under UV-B exposure, whereas treatment with vitamin E and γ-oryzanol reduced protein loss by up to 50% compared to controls. The γ-oryzanol emulsion exceeded vitamin E film in attenuating UV-B radiation damage to hair fibers. Structural and morphological assessments using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), spectrofluorometry, and gas chromatography-mass spectrometry (GC-MS) revealed significant preservation of hair integrity in treated samples, with notably greater protection observed in female hair samples. These findings highlight the potential of natural UV-absorbing compounds as sustainable, cost-effective agents for mitigating UV-induced hair damage. This work contributes to the development of protective strategies that maintain hair health and appearance under environmental stress.