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Hair Bleaching and Degree of Damage by Thermal Treatment

  • Textile Coloration and Finishing
  • Abbr : Text. Color. and Finish.
  • 2019, 31(3), pp.155-164
  • DOI : 10.5764/TCF.2019.31.3.155
  • Publisher : The Korean Society Of Dyers And Finishers
  • Research Area : Engineering > Fiber Engineering > Dyeing Engineering
  • Received : August 24, 2019
  • Accepted : September 16, 2019
  • Published : September 27, 2019

Yu Rim Seong 1 KANG Eun Ju 1 Im soon yea 1

1동신대학교 뷰티미용학과

Accredited

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˚C or lower)’ was the greatest, followed by ‘plant hair dye(180˚C or lower)’ and ‘permanent hair dye(200˚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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