Unveiling the Link Between Surface Physicochemistry and Nanomechanical Behavior in Bleached and UV-Irradiated Human Hair Fibers

In this study, researchers observed that even a single session of hair dyeing can damage hair fibers, with significant worsening of mechanical properties and protein composition after three or more consecutive treatments, emphasizing the need to consider the cumulative impacts of dyeing on hair health.

Atomic Force Microscopy is a more accurate way to assess hair damage and the effect of cosmetic treatments.

In this study, hydrophobic interactions were found to primarily drive deposition on virgin hair, while electrostatic interactions were more significant for bleached hair, highlighting different target moieties for hair conditioning products.

This paper reviews the surface degradation of hair and describes how combining 18-MEA with specific surfactants can maintain hydrophobicity on bleached and weathered hair surfaces.

This study showed that chemical and mechanical treatments significantly alter the nanoscale surface properties of hair, affecting its roughness, mechanical stiffness, adhesion, and surface potential.

This review examines hair cosmetics, including shampoos and conditioners, for their formulations and effects, but reports no new clinical findings; it emphasizes the importance of dermatologist knowledge in treating diverse hair conditions.

This study concluded that bleach treatment partly transforms the hydrophobic top layer of human hair cuticles into a hydrophilic surface with clustered cysteic acid, visualized at the nano-scale using dynamic Chemical Force Microscopy.

This study identified two types of calcium in human scalp hair, with one type highly variable between individuals, potentially impacting the analysis of environmental and medical factors related to hair calcium.

Hair treatments like bleaching increase friction by exposing tiny pores on the hair surface.