Textile Coloration and Finishing (한국염색가공학회지)

The Korean Society of Dyers and Finishers (한국염색가공학회)
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Hair Bleaching and Degree of Damage by Thermal Treatment

열처리에 의한 모발의 퇴색 및 손상도 연구

  • Seong, Yu Rim (Department of Cosmetology, Dong Shin University) ;
  • Kang, Eun Ju (Department of Cosmetology, Dong Shin University) ;
  • Lim, Sun Nye (Department of Cosmetology, Dong Shin University)
  • 성유림 (동신대학교 뷰티미용학과) ;
  • 강은주 (동신대학교 뷰티미용학과) ;
  • 임순녀 (동신대학교 뷰티미용학과)
  • Received : 2019.08.24
  • Accepted : 2019.09.16
  • Published : 2019.09.27
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Abstract

This study comparatively analyzed hair bleaching and degree of damage by the temperature of a heating tool after coloring hair with a permanent, semi-permanent or plant hair dye. According to analysis by spectrophotometer, 'semi-permanent hair dye' was the highest, followed by 'permanent hair dye' and 'plant hair dye' in terms of changes in $L^*$ values. In terms of changes in hair shape when analyzed using FE-SEM, 'semi-permanent hair dye($150^{\circ}C$ or lower)' was the greatest, followed by 'plant hair dye($180^{\circ}C$ or lower)' and 'permanent hair dye($200^{\circ}C$ or lower)'. Therefore, it is reasonable to flat iron hair at low temperature. According to the test, amino acid values gradually decreased in both bleached and colored hair. The results obtained through TGA-based thermal analysis confirmed that as brightness increases, hair moisture contents decrease. This study aimed to protect hair by suggesting a correct use of a flat iron by the hair dye type during hair coloring. It appears that the study results would help hairdressers minimize hair damage by using a hair dye at proper temperature.

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References

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