Abstract
This study applied a bleaching agent. which is commonly used in the beauty salons, to the hair of normal adult women, collected the hair immediately and 10 days and 20 days from the bleaching, were investigated the degree of degradation of the hair by using scanning and transmission electron microscopes. The surface of hair just after bleaching was observed to be similar to that of normal hair, showing no split or damage of scale. In the hair of 10 days after bleaching, however, the scale came off. From this time, scale on the cuticular layer of hair began to be separated. In 10 days from bleaching, the scale on the cuticular layer was separated from hair and some cytoplasm of cuticular cells was broken into pieces or fell off. The cell remains made the surface coarse and uneven. At this period, damaged scales had a sharp end. In the hair of 20 days after bleaching, scale fell off from the whole surface of the hair and the surface looked rough. On the bleached hair, many vacuoles were formed in the endocuticle of cuticular cells. As a result, deformation caused by the formation of vacuoles in cuticles broke up the cuticular cells.
정상성인 여성의 머리카락에 미용실에서 일반적으로 시술하는 탈색제를 사용한 다음 탈색직후, 탈색 후 10일, 20일이 경과한 머리카락을 채취하여 머리카락의 손상정도를 고배율의 투과 및 주사전자현미경으로 관찰하였다. 탈색직후 머리카락의 표면은 정상 머리카락과 비슷한 상태로 관찰되었으며 비늘이 분리되거나 손상됨 없이 나타났다. 탈색 후 10일 경과된 머리카락은 비늘이 분리되어 있고 일부 큐티클세포의 세포질은 조각이 나 있거나 떨어져 나갔다. 이 시기에 머리카락은 비늘이 떨어져 나가면서 표면에 세포부스러기들이 그대로 부착되어 있고, 비늘의 모양은 끝 쪽이 날카로운 모양을 하고 있었다. 탈색 후 20일이 경과된 머리카락은 표면 전체가 비늘의 분리에 의해서 거칠게 나타났다.
