천연치자(gardenia jasminoides Ellis) 황색소와 전해수를 이용한 모발의 염색 및 변화 연구

Abstract

This study attempted to analyze hair dyeing using gardenia(gardenia jasminoides Elis) yellow pigment and electrolyzed water and the changes effected in hair color. The study results found the following: First, in a skin prick test, the results were negative in all 20 clinical trial participants. Therefore, the safety of the natural substance was confirmed. Second, in terms of the dyeing properties of 10 minute-heated hair, the experimental group was higher in L* and b* and lower in a* than the control group. In addition, 20 minute-heated hair was slightly higher in L* and b* and lower in a* than hair heated for 10 minutes. Third, in terms of dyeing concentration (K/S), 20 minute-heated hair was higher than hair heated for 10 minutes in all categories. Fourth, regarding changes in hair, tensile strength was higher in the experimental group than in the control group. In the experimental group, the 10 minute-heated hair was higher than hair heated for 20 minutes in terms of tensile strength. In non-dyed hair, however, tensile strength further increased in hair heated for 20 minutes. Regarding the cuticle, the surface was smoother in the experimental group than in the control group in all categories (10 minute and 20 minute-heated hair).