本研究以薑黃粉末添加水及1,3 丁二醇染髮後，以1%沒食子酸溶液作為媒染劑進行薑黃 色素染受損髮及白髮評估。實驗顯示，薑黃加水染受損髮的A 配方在8 次洗髮後，CIE L＊值 為58.6±0.5，跟媒染的B 配方L＊值(53.1±0.6)及添加1,3 丁二醇經過媒染後的C 配方L＊值 (42.3±0.1)有明度上的顯著性差異(P>0.05)。而薑黃加水染白髮經過6 次洗髮的C1 配方，其 CIE L＊值為77.0±1.3 顯著 (P>0.05) 高於薑黃加1,3 丁二醇的C2 配方(73.9±0.7)，及加入果膠 酵素的C3 配方(72.4±0.4)；在6 次洗髮後的C1、C2 與C3 配方，CIE b*值分別為54.3±1.2、 60.3±2.0、60.5±1.3，此數值顯示薑黃添加1,3 丁二醇染髮後，能幫助色素滲透於頭髮中產生 鮮豔的黃色，而沒食子酸溶液作為媒染劑能增加頭髮的染色堅牢度，因此實驗證明薑黃可運 用於半永久性染髮劑中作為黃色色素使用。

This study examines and evaluates the effects of three different types of turmeric colorants on damaged hair and white hair. Turmeric powder was mixed with water, 1,3-Butanediol, and 1% gallic acid as mordant to make up the three colorants. In the test on damaged hair, Colorant A, which is turmeric mixed with water, gave the hair a CIE L* value of 58.6±0.5 after 8 washes. Colorant B (turmeric mixed with water, with 1% gallic acid added as mordant) yielded a CIE L* value of 53.1±0.6, and Colorant C (turmeric mixed with water and 1,3-Butanediol, with 1% gallic acid added as mordant) returned a CIE L* value of 42.3±0.1. The CIE L* value of Colorant A is significantly different (P>0.05) from the CIE L* values of Colorant B and C. In the test on white hair, after 6 washes, Colorant C1 (turmeric mixed with water) returned a CIE L* value of 77.0±1.3, Colorant C2 (turmeric mixed with 1,3-Butanediol) returned a CIE L* value of 73.9±0.7, and Colorant C3 (turmeric mixed with 1,3-Butanediol and pectinase) returned a CIE L* value of 72.4±0.4. The CIE L* value of Colorant C1 is significantly higher (P>0.05) than the CIE L* values of Colorant C2 and C3. The CIE b* value for C1, C2, and C3 after 6 washes was 54.3±1.2, 60.3±2.0 and 60.5±1.3 respectively. These test results show that the combination of turmeric and 1,3-Butanediol can help the suffusion of yellow pigments through hair while gallic acid as mordant can help retain the color and lengthen the duration of the dye. The study thus shows that turmeric can be used as an ingredient for semi-permanent hair dye products.