Youn-Duk Kim

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Human hairs experience damage and restoration processes consistently because of various external and internal factors. To analyze degrees of hair damage, morphological studies based on electron microscopy (EM), and biochemical studies based on protein and lipid analysis have been proposed and are widely used. Among them, morphological analysis through EM is(More)
BACKGROUND Hair dryers are commonly used and can cause hair damage such as roughness, dryness and loss of hair color. It is important to understand the best way to dry hair without causing damage. OBJECTIVE The study assessed changes in the ultra-structure, morphology, moisture content, and color of hair after repeated shampooing and drying with a hair(More)
BACKGROUND Diverse causes of extrinsic damage to the hair shaft have been documented and can be roughly divided into physical and chemical causes. Chemical causes of hair damage include bleaching, hair dyeing, and perming. OBJECTIVES The goal of this study was to investigate differences in patterns of serial damage in Asian, White European (WE), and(More)
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