August 2025 in “Al-Salam Journal for Medical Science” This paper reviews current knowledge about the structural formation and classification of steroid hormones, highlighting the importance of understanding their role in health and disease. It also identifies research gaps and suggests future studies to improve clinical practices and treatment plans.
52 citations
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February 2005 in “Biopolymers” In this study, chemical treatments during permanent hair straightening were found to randomize proteins in the cortex, aiding in the reconnection of disulfide bonds during oxidation.
7 citations
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August 2018 in “Journal of cosmetic dermatology” This study found that chemical hair straightening significantly reduced hair curl and improved smoothness and shine, but did not significantly affect transverse fissures or split ends, indicating potential benefits with some side effects.
January 2017 in “Durham e-Theses (Durham University)” This study developed new label-free imaging methods to analyze human hair, identifying distinct chemical environments within cuticle layers and changes in hair structure caused by depilatories, while showing that the treatments tested did not significantly affect skin cell differentiation or proliferation.
September 2025 in “Sahel Journal of Life Sciences FUDMA” This study reported that albino Wistar rats exposed to chemical hair straighteners showed significant hair fiber damage and scalp skin deterioration, which worsened with repeated and prolonged application, highlighting the cytotoxic potential of these products and potential systemic risks.