Surface Color Dyeing and Dyeing Properties of Natural Hair Dyeing Using Dry Indigo

The purpose of this study is to determine the degree of hair dyeing according to the presence or absence of mordant use and the dyeing time using the dry indigo, the bleached hair sample was pre-mordded in alum (reagent, 5%, owh, on the weight of hair) solution for 10 minutes and then When dyeing at ℃ for 10 minutes, 20 minutes, 30 minutes, and 40 minutes, the maximum absorption wavelength of dyeing on the dry side was 420 nm. The result is as follows. First, when a mordant (Al) was used, the overall color was dyed green, and the L* value was the highest when staining for 10 minutes, followed by 20 minutes and 30 minutes. Also, both a* and b* values were found to be high in the order of 10 minutes, 20 minutes, and 30 minutes. In the case of 40-minute staining, it was the lowest. Second, when no mordant was used, all were dyed in blue green, and the L* values were high for a* and b* values in the order of 10 minutes, 20 minutes, and 30 minutes. In the case of 40-minute staining, it was the lowest. Third, in the case of K/S of the amount of dyeing, the K/S value was higher when alum mordant was not applied, and the K/S value was lower when alum mordant was applied. In both mordant and non-mordant staining, the amount of dyeing increased as the time increased for 10, 20, and 30 minutes of staining, but after 30 minutes, the dyeing was no longer combined and the dye was no longer darkly dyed. It was found that the amount of dyeing and saturation decreased as the time increased.