Study on Hair Damage Caused by Treatment Method When Applying Circular Iron Heat Permanent for Women's Hair from Korea and China

June 2016

Eun Young Kim, Jee Young Jung, Kyoung Sook Ko

silicon circular iron heat permanent hair damage hair thickness

TLDR Using silicon circular iron on Korean women's hair increases hair thickness the most.

The study investigated hair damage resulting from the use of silicon circular iron heat permanents on women's hair from Korea and China. It was found that the direct permanent method using silicon circular iron on Korean women's hair resulted in the highest level of hair thickness, measured at 0.0355. The research aimed to understand the effects of different treatment methods on hair damage, focusing on the comparison between Korean and Chinese hair.

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