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This study found that Rhodamin B staining of keratin was inconsistent across normal skin, epithelial tumors, and dermatoses, with notable differences in staining intensity between tricho-hyalin and keratohyalin granules.

In this study, ethosomes were found to improve the skin penetration of a model lipophilic drug more effectively than liposomes or hydroethanolic solutions, suggesting a unique mechanism involving the breakdown of vesicles in the skin.

This study found that keratin films made from human hair can potentially substitute for human nail plates in drug permeability studies, but they show higher sensitivity to penetration enhancers compared to bovine hooves.

This study found that rhodamine B penetrated human hair fibers more effectively from an aqueous solution compared to a methanol/ethanol solvent, with penetration depending on hair morphology.

This study found that photochemical and cosmetic chemical oxidation of hair causes surface damage by delipidation and acid formation, which can be characterized and quantified using microfluorometry and X-ray photoelectron spectroscopy.