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China Surfactant Detergent & Cosmetics ›› 2019, Vol. 49 ›› Issue (7): 476-479.doi: 10.3969/j.issn.1001-1803.2019.07.010

• Analytical methods and testing • Previous Articles     Next Articles

Detection and analysis of thioglycolic acid contents in special hair perm products

LIU Qi,YANG Ling,LIU Cheng-hao,HAN Xiao-qian,ZHANG Hua-jun()   

  1. Beijing Institute of Drug Control, Beijing 102206, China
  • Received:2018-12-27 Revised:2019-06-24 Online:2019-07-25 Published:2019-07-26
  • Contact: Hua-jun ZHANG E-mail:felicity81612@163.com

Abstract:

Thioglycolic acid contents in 48 batches of special hair perm products were detected by HPLC, ion chromatography-conductivity detector and ion chromatography-UV detector. The differences and applicability of the three detection methods were studied. The overall adding data of thioglycolic acid in 48 batches of hair perm products was obtained, and the adding trend was analyzed. The results show that the ion chromatography-UV detector method can effectively eliminate the interference of impurities, and it is similar as the detection method of thioglycolic acid in the current “Safety and Technical Standards for Cosmetics”(2015 edition). It is recommended as a supplementary method. The contents of thioglycolic acid in all special hair perm products meet the upper limit standard established by the industry.

Key words: special hair perm products, thioglycolic acid, high performance liquid chromatography, ion chromatography

CLC Number: 

  • TQ658.3