March 2021 in “CRC Press eBooks” Photography is essential for tracking hair disease progression, especially with consistent lighting and documenting specific scalp areas.
April 2026 in “Science & Justice” Hair analysis can confirm drug use but can't accurately measure how much was taken.
36 citations
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October 2014 in “Langmuir” Bleaching hair removes its protective top layer and exposes more hydrophilic groups, changing its chemical surface and affecting how it interacts with products.
3 citations
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October 2022 in “Clinical, Cosmetic and Investigational Dermatology” The 532 nm laser effectively reduces facial vascular and pigmented lesions, with the VISIA system reliably assessing treatment results.
June 2025 in “Albus Scientia” MC1R gene variations affect skin, hair color, UV sensitivity, and melanoma risk.
7 citations
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September 2004 in “International Journal of Cosmetic Science” Blond hair lightens more with visible light directly, while ultraviolet light lightens it after washing by damaging other hair parts.
September 2010 in “대한화장품학회지(J. Soc. Cosmet. Scientists Korea)” The study developed a reliable method to measure active ingredients in hair nourisher products using HPLC.
January 2020 in “대한미용학회지” Permanent hair dye reduces sulfur content in both gray and black-brown hair.
3 citations
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March 2019 in “Journal of Pigmentary Disorders”
January 2026 in “Inflammation and Regeneration” Two-photon microscopy improves skin imaging but faces safety and cost challenges for clinical use.