Effect of Bleaching and Permanent Wave Manipulation on the Amino Acid Composition of Hair

모발 탈색 및 퍼머넌트 웨이브가 모발의 아미노산 조성에 미치는 영향

  • Ha, Byung-Jo (Department of Dermatic Health Management, Eulji University) ;
  • Kim, Jun-Kwang (Department of Dermatic Health Management, Eulji University)
  • 하병조 (을지대학교 보건과학대학 피부관리학과) ;
  • 김준광 (을지대학교 보건과학대학 피부관리학과)
  • Published : 2008.06.30


Variations of the seventeen amino acids(aspartic acid, threonine, serine, glutamic acid, proline, glycine, alanine, cystein, valine, methionine, isoleucine, leucine, tyrosine, phenylalanine, histidine, lysine, arginine) were analyzed in human hair sample by amino acid auto analyzer(AAA). The effect of bleaching and permanent wave manipulation on the amino acid composition of hair were investigated. Hair samples were collected from 10 males in their thirties. Hair samples were treated with 10 mL of 6 N hydrochloric acid at $110^{\circ}C$ for 24 h and analysed by AAA. The results showed that the amino acid content of normal hair(73.9%) decreased to 71.5% and 69.3% after bleaching and permanent wave treatment, respectively. Furthermore, mean contents of lysine and tyrosine in amino acids showed obviously decreased about 25% by permanent wave and bleaching treatment. On the other hand, serine, cystein, leucine and histidine were not changed.


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