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Permanent Wave 및 Tint 에 의한 Hair Scale 의 변화
배선향,최경임 한국미용학회 2001 한국미용학회지 Vol.7 No.2
This study investigated the changes of hair cuticle shape by means of scanning Electron Microscope(SEM) after permanent waving, coloring, according to different types of chemicals(perm, dye, bleach)and of temperatures(25℃, 50℃). The subjects were Korean students in their twenties who did not go on a diet, took no drugs, and had virgin hair. Virgin hair remained dense without being splayed off the scale, overlapped in a regular basis, and clear of the boundary between scales. But, the scale of hair cuticle had been splayed, separated, and lost by permanent waving, coloring with hair chemicals. The hair cuticle that was permanent waved at 25℃ once and three times showed almost virgin hair, and the cuticle of hair permanent waved at 50℃ once was just a little splayed, so it seemed that perm treatment frequency and the permanent wave lotion with low pH were not major factors at low temperature. However, repeating the performance of coloring though at low temperature, was more major harmful factor than high temperature. The hair cuticle of hair permanent waved at 50℃ three times and the cuticle of hair colored at 25℃ once showed a similar damage degree. Therefore, it is believed that a chemical for color brines a more detrimental effect on hair than a chemical for perm. So, a chemical for bleach is more harmful to hair than a chemical for color. Under the same condition of chemical treatment time, treatment temperature, and treatment frequency, the cuticle is damaged more severely to the order of coloring, and permanent waved, and the effect of pH for hair damage is bigger than that of temperature at 50℃ below. As a result of this experiment, it is shown that the investigation with SEM provides a fundamental information on the measurement of hair damage.