Morphological Damage Procedures of Hair surface treated with repetitive Oxidation Coloring Agent Lee Myung-Sook1, Chang Byung-Soo2,* 1Researcher, Department of Cosmetology, Hanseo University, Seosan, Chungnam, 31962, Republic of Korea 2Professor, Department of Cosmetology, Hanseo University, Seosan, Chungnam, 31962, Republic of Korea *Corresponding Author: Byung-Soo Chang, Professor, Department of Cosmetology, Hanseo University, Seosan, Chungnam, 31962, Republic of Korea Email: bschang@hanseo.ac.kr
Online published on 8 August, 2019. Abstract Background/Objectives People apply permanent hair dyes in various colors to change their hairstyle or appearance. Frequent dyeing damages the hair cortex and cuticle layer. Method In this study, a permanent coloring agent was applied to normal hair five times consecutively and the damage on the hair surface was observed with a scanning electron microscope (SEM). Findings In this study, the hair surface was continuously damaged as the number of permanent dyeing procedures increased. As the number of permanent dyes applied increased, the surface of the repeatedly dyed hair cracked and was lost in the cells of the cuticle. As the number of dyeing procedures to the same hair increased, the surface area of the scales making up the hair became wider and some broken cells remained attached to the surface of the hair scales. Improvements/Applications Damage to hair due to dyeing was confirmed by scanning electron microscopy. This study indicated that frequent dyeing should be avoided in order to prevent excessive hair damage. Top Keywords Hair, hair dye, permanent colouring agent, SEM, scale, cuticle layer. Top |