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논문 기본 정보

자료유형
학술저널
저자정보
이수비 (영남이공대학교 뷰티스쿨) 장병수 (한서대학교) 김영철 (계명대학교)
저널정보
대한미용학회 대한미용학회지 대한미용학회지 제17권 제4호
발행연도
2021.12
수록면
373 - 380 (8page)

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초록· 키워드

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The current study examined microstructural changes in gray and black-brown hairs before and after permanent hair dyeing using transmission electron microscopy (TEM). A close connection of cuticle cells to the cell membrane complex (CMC) was observed on TEM images of black-brown and gray hairs. A cuticle cell layer comprising the exocuticle and endocuticle was easily distinguished due to the difference in electron density. The cuticle CMC was also composed of two inner and outer β layers with low electron density and one δ layer with high electron density. The cortex was distinguished from the cuticle layer by cuticle CMC and the medulla was distinguished from the cortex. Holes varying in size were observed in the endocuticle of black-brown hair, however their presence in the gray hair was unlikely. The cortical cells of black-brown hair were filled with macrofibrils, melanin granules, and cell debris, with the presence of melanin granules in the intermacrofibrilar matrix and cell debris. The cortex of the gray hair was filled with macrofibrils, and no melanin granules were observed. Dyeing reaction materials were observed as particles with high electron density in the endocuticles, cuticle and cortex CMCs, intermacrofibrilar matrix, and cellular debris in dyed black-brown hair and dyed gray hair. Characteristically, an increase in the thickness of both cuticle and cortex CMCs was observed after dyeing (0.04 μm) compared with that before dyeing (0.02 μm). In addition, in cuticle CMC, the outer β layer was strikingly thickened compared with the inner β layer.

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