5 citations
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November 2003 in “PubMed” This study found that chemical and photochemical oxidative processes modify the main classes of proteins in hair, confirmed through microspectrophotometric, fluorescence microscopy, and electrophoretic methods.
June 2002 in “Science of aging knowledge environment” This study suggests that the oncogene c-Myc can induce DNA damage by increasing reactive oxygen species, potentially overriding p53 and contributing to genetic instability in cancer cells.
May 2026 in “International Journal of Cosmetic Science” This study found that UV radiation exposure during a simulated Brazilian summer caused more significant mechanical damage to natural hair than bleaching, although both caused comparable structural alterations, with double bleaching leading to the most severe protein degradation.
30 citations
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September 2018 in “International Journal of Cosmetic Science” In this study, researchers observed that cosmetic peroxide bleaching causes oxidative damage and protein loss in human hair, not only affecting the cuticle but also deeper cortical structures, correlating with bleaching severity.
10 citations
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March 2005 in “International Journal of Cosmetic Science” This study found that photochemical and cosmetic chemical oxidation of hair causes surface damage by delipidation and acid formation, which can be characterized and quantified using microfluorometry and X-ray photoelectron spectroscopy.