18 citations
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January 2008 in “Sen'i Gakkaishi” This study observed that repeated perm treatments decrease disulfide bonds in hair due to their conversion largely into cysteic acid, affecting the waving efficiency depending on the reduction agent used.
April 2025 in “International Journal of Cosmetic Science” This study found that using 1,4-butylenediamine bismaleimide for hair perming through thiol-Michael click chemistry offers comparable efficiency to conventional oxidative methods, with enhanced durability and reduced damage to hair fibres, preserving mechanical, color, and surface properties.
3 citations
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January 2009 in “Sen'i Gakkaishi” This study found that using a bicomponent reduction system with TGA and DTDG for hair straightening limited hair damage by forming only thiol groups, while a TGA-only system formed more damaging mixed disulfide groups.
This study suggests that human hair keratin-based gradient hydrogels incorporating silver ions may serve as promising dermal templates for wound healing, demonstrating favorable mechanical properties, cell interaction, and antibacterial activity.
January 2024 in “Molecules (Basel. Online)” In this study, researchers examined juglone's potential as a restoring agent for hair keratin damaged by permanent or bleaching treatments, finding that juglone formed Michael adducts with cysteine residues, leading to a more regular hair surface as observed via IR spectroscopy and SEM analysis.