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배선향 ( ) - 진주보건대학 피부미용과
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Abstract
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This study investigated the changes of hair cuticle shape by means of scanning Electron Microscope (SEM) after coloring, and bleaching, according to different types of chemicals (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 coloring, and bleaching with hair chemicals.
Repeating the performance of coloring and bleaching, though at low temperature, was more major harmful factor than high temperature.
The hair bleached by a chemical of pH 11.0 at 25℃ had much bigger splayed scales than the colored hair at 25℃ three times.
This result reveals that a chemical of pH 11.0 for bleach damages hair severely leaving splayed and cracked in the whole hair, and makes column wrinkled scales regardless of temperature.
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 bleaching, coloring 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.
It is also considered that more study is needed to minimize the hair damage, maintaining the satisfactory result of bleach through the methods of lowering pH or chemicals and of reducing the treatment time of coloring or bleaching.
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KeyWords
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원문 및 링크아웃 정보
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등재저널 정보
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