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Formulation Study of Natural Hair Dye with Lac
Fu -Mei Chien
陳崇裕(Chon-Yu Chen )
lac, hair dye, natural dyes
|Issue Date: ||2012-12-11 15:16:31 (UTC+8)|
Natural hair dye is the future trend in hair color market. In this study, we compared different extraction methods to explore the extraction yield of natural color from the lac. Another purpose was to find the better formula for color and mordant dyeing by matching colors experiment and mordant dyeing experiment, and for the colorfastness to washing. Besides assessing efficacy of nature hair dye, finally, we colored white hair and performed skin allergy evaluation.
The experimental result revealed that the better extraction yield of lac was 0.25％with water by ultrasound-assisted extraction. We also found that ultrasonic degumming method had higher lac quantity percentage which was 3.401% ( the degumming solution is 95% ethanol, and then used ultrasound-assisted extraction method with solvent of water). In color formula examintaion, C4 formula had good presentation (lac 2.5%＋Hematoxylin2.5%＋Xanthan gum1.5%＋pure water 93.5%). The better mordant dyeing formula was AM3（lac 2.5%＋Hematoxylin 2.5%＋Ferrous sulfate heptahydrate 1%＋Xanthan gum1.5%＋pure water 92.5%）. The better result of testing for colorfastness to washing was AM3 formula（ lac 2.5%＋Hematoxylin2.5%＋Ferrous sulfate heptahydrate 1%＋Xanthan gum1.5%＋pure water 92.5%）. AM3 formula also had great color permeability for hair. Meanwhile, C4 formula had better hair color in dyeing result（lac 2.5%＋Hematoxylin 2.5%＋Xanthan gum1.5%＋pure water93.5%）for elderly white-hair, and the result was yellow. The better colorfast effect after three times washing for white hair was provided by C4 formula（lac2.5%＋Hematoxylin2.5%＋Xanthan gum1.5%＋pure water 93.5%）. In allergy testing, AM3 formula developed slight skin allergy reaction in 20% subjects. This formula needs further adjustment in order to meet the requirement of allergy. In contrast, C1 and C4 formulas revealed no skin allergy. Future work should encompass how to cover white hair with darker color successfully by nature hair dye.
|Appears in Collections:||[Graduate School of Applied Arts & Design] Thesis and Dissertation|
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