염모제의 성분 특성 및 사용횟수에 따른 모발손상도 연구

Hair Damage According to Type of Hair Dye Components Used

This study was conducted to assess the level of hair damage according to type of hair dye components used and to prepare fundamental data for promoting healthy hair. Samples came from a 14-year-old girl whose hair had never been dyed. It was cut into 20cm lengths at a point 5㎝ away from the scalp. Each sample weighed 2g. The hair samples were dyed once, twice, and three times with eight kinds of hair dyes and dried naturally. The cuticles were observed with SEM to examine hair damage. To evaluate the damage of hair observed with SEM, 5 levels of damage were classified. Ten professors of hairdressing in the Department of Cosmetology evaluated the samples. There were significant differences in hair damage according to the number of times the hair was dyed. The level of damage was greatest in hair dyed with chemical henna and lowest in hair dyed with the squid ink.