earticle

영어

In this study, EM, which has a low pH of 3.4 and a great antioxidant effect on controlling free oxygen radicals’ oxidation, and contains amino acids and organic acids nourishing hair, was used for the various treatments (non, pre, after-treatment, permanent solution add, and pre&permanent solution add&after-treatment) for damaged hair(permanent & dyeing) in heat permanent wave procedures to compare and analyze wave shapes and physical(wave formation rate, tensile strength, and elongation) and morphological(hair thickness and cuticle changes of hair). The results showed that adding EM to permanent solution has better effects in heat permanent wave procedures than EM non-treatment does. This indicated that EM’s properties, a low pH and a powerful antioxidant effect, play an instrumental role in inhibiting the oxidation of residual oxygen free radical and preventing protein loss by nourishing hair with various minerals, organic acids, and amino acids. Therefore, this study presented that adding EM into permanent solution in heat permanent wave procedures of chemically damaged hair is effective in minimizing hair damage and side effect and improving hair.