December 2023 in “Journal of molecular structure” This study found that hair membrane fluidity is low in the cuticle but high in the cortex and medulla, with treatments like ionic surfactants and oleic acid increasing fluidity in hydrated hair; however, dehydration significantly reduces fluidity throughout the hair.
43 citations
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July 1994 in “Journal of Cell Science” This study found that the extraction-resistant structures in hair, feathers, and hagfish teeth are due to ε-(γ-glutamyl)lysine cross-linked proteins, emphasizing their role in maintaining the integrity of these materials.
2 citations
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November 2009 in “Korean journal of chemical engineering” This study found that the nonionic surfactant Brij 78 stabilized cationic minoxidil microparticles against aggregation, maintaining their substantivity in the presence of excess anionic surfactant.
15 citations
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February 1999 in “The anatomical record” This study found that defective cross-linking in hair cuticles is observable in a minority of mouse hair mutants, suggesting different proteins are involved in cross-linking across cell types.
2 citations
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April 2008 in “Journal of Dispersion Science and Technology” This study observed that including cationic minoxidil particles in a shampoo facilitated notable hair growth promotion despite a negative surface charge after rinsing, likely due to ionic interactions with the skin.