January 2025 in “The Analyst” Calcium oxalate was found in human hair and could help detect certain health conditions.
15 citations
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August 2020 in “Analytical chemistry” Hair lipids do not protect against humidity.
40 citations
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May 2016 in “Proceedings of the National Academy of Sciences of the United States of America” Changes in keratin make hair follicles stiffer.
September 2025 in “Cosmetics” Lipid content and structure affect water absorption in different hair types.
2 citations
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July 2023 in “Cosmetics” Surfactants in shampoos and conditioners remove some but not all lipids from hair, and more research is needed to understand their full impact.