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영어

This research was measured highlights and damage of hair dye with making 3-Step hairdye to reduce damage of hair.The hair damage caused by an alkaline agent and an oxidizing agent were studied a way to minimize. Measured the highlight of the hair dye by Color reader, the absorbance by using methylene blue and the hair damage. And　I tested the tensile strength of the hair. In Comparison of the control and test group, confirmed that highlight of the hair and hair damage was enhanced. This hair damage was due to excessive swelling of the hair cuticle by the alkali agent. And also this damage was caused by micropore occurrence as the melanin pigment granules destruction by the oxidizing agent was generated. Therefore, the way to dye hairs through 3-Step hairdye is the appropriate treatment methods to increase highlights of the hair and reduce the hair damage. 3-Step hairdye will soon be considered to be used as a way to reduce the hair damage in hair salon.