Optical Evaluation of Internal Damage to Human Hair Based on Second Near-Infrared Window Polarization Microscopy

May 2024 in “ International Journal of Cosmetic Science ”

Tomonobu M. Watanabe, Seiko Ueda, Saki Ishida, Go Shioi, Junichi Kaneshiro, Michi Magari

circular polarization microscopy near-infrared optics second NIR window laser scanning transmission microscope cortex lithium bromide heat treatment polarizability NIR infrared light hair cortex hair damage

Studysummary This study found that using near-infrared optics, specifically in the second NIR window, allows for effective noninvasive evaluation of intra-hair damage caused by cosmetic treatments, demonstrating distinct damage types and changes in hair condition due to chemical or thermal processes.

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Research cited in this study

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