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Hair dye products are made with chemicals that may be harmful. Thus, natural hair dyes could become increasingly popular, especially dyes from henna or Lawsonia inermis L. dry leaves. However, dyeing from Lawsonia inermis L. leaves is effortful, time consuming and easily fading after washing. The objectives of this study were to find out the effectiveness of solvents for extraction of Lawsonia inermis L. fresh leaves on the intensity of hair color and color persistency after washing by using the following solvents; hot water, white whiskey 40 degrees, lemon juice with boiled water, and limewater. The data were expressed as means and subjected to one-way Analysis of Variance (ANOVA), Repeated Measures ANOVA and Descriptive discussion.
The most effective of solvents was hot water which was significantly different from other solvents in the level of p < .05, followed by lemon juice with boiled water, white whiskey 40 degrees, and limewater, respectively. The color intensity depended on the time consuming of soaking hair. Color persistency was best with hot water, lemon juice with boiled water; while whiskey 40 degrees was effectively similar to the other in the percentage of 79.21, 78.87, and 75.76, respectively. For limewater the percentage was only 67.51.
Hair dyeing from Lawsonia inermis L. fresh leaves by hot water was the most effectiveness of solvents for hair color intensity and persistency which could be applied in self-hair dyeing because the procedure is easy, convenient, and effective.
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