research Protein disulphide isomerase-mediated grafting of cysteine-containing peptides onto over-bleached hair 28 citations , December 2011 in “Biocatalysis and biotransformation” PDI helps restore over-bleached hair's strength and structure by attaching special peptides.
research Evaluation of Cysteic Acid in Bleached Hair Using Infrared Spectroscopy 8 citations , January 2016 in “Journal of fiber science and technology” Bleaching hair increases cysteic acid levels in a predictable way.
research Internal structure changes in bleached black human hair resulting from chemical treatments: A Raman spectroscopic investigation 4 citations , August 2014 in “Journal of molecular structure” Chemical treatments on bleached black hair change its internal structure by breaking and reforming bonds, and treatments with hydrolyzed eggwhite protein help repair it.
research Unveiling the link between surface physicochemistry and nanomechanical behavior in bleached and UV-irradiated human hair fibers March 2026 in “Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials” Bleaching and UV exposure significantly damage hair.
research Cyclic combing of untreated and bleached human hair: Analysis of the time‐dependent breakage of hair through recording the formation of fibre fragments September 2025 in “International Journal of Cosmetic Science” Friction causes hair breakage during combing, and fragment count predicts hair strength.