16 citations
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October 2009 in “Xenobiotica” The tested hair dye ingredients do not form harmful oxidized metabolites in the liver.
January 2019 in “Durham e-Theses (Durham University)” Advanced microscopy shows hair damage and keratin proteins' roles, aiding future cosmetic treatments.
1 citations
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December 2022 in “Middle East Journal of Science” Permanent hair dyes use chemicals that react with hydrogen peroxide to create color.
July 2026 in “International Journal of Applied Pharmaceutics” Hair dyes, especially with PPD, can cause skin and rare systemic reactions, and safer alternatives are needed.
Copper levels in green hair decreased significantly after treatment.