R&D Hair Color Level 3, Henkel AG & Co KGaA, Hohenzollernring 125-127, 22763 Hamburg, Germany.
Department of Chemistry, University of Hamburg, Martin-Luther-Kingplatz 6, 20146 Hamburg, Germany.
Molecules. 2021 Feb 5;26(4):829. doi: 10.3390/molecules26040829.
The aim of this work was to optimize our natural hair dyeing system which we described in our previous work and to compare with other dyeing systems. Therefore, we investigated concentration limits of matcha and mordant and compared this new dyeing method with commercial permanent systems on the market. Completely unpigmented hair tresses were dyed with matcha powder and iron(II)-lactate. To investigate the wash fastness and concentration limits, the differently dyed hair tresses were spectrophotometrically measured. The comparison of the damage potential for which cysteic acid is an indicator was measured by NIR. The concentration of matcha and mordant are responsible for the intensity of the color results. The higher the matcha or the mordant concentration, the darker the color results of the dyed hair tresses. Hair damage of matcha mordant dyeing is comparable with results of commercial permanent hair coloration systems. Moreover, the results of wash fastness of matcha mordant dyed hair tresses is comparable and even better by tendency to permanent colored hair tresses.
本工作旨在优化我们之前工作中描述的天然染发系统，并与其他染发系统进行比较。因此，我们研究了抹茶和媒染剂的浓度极限，并将这种新的染色方法与市场上的商业永久性系统进行了比较。完全未染色的头发用抹茶粉和乳酸亚铁进行染色。为了研究耐洗牢度和浓度极限，用分光光度计测量了不同染色的头发。用近红外（NIR）测量半胱氨酸酸作为指示剂的损伤潜力的比较。抹茶和媒染剂的浓度决定了颜色效果的强度。抹茶或媒染剂的浓度越高，染色头发的颜色效果就越深。抹茶媒染剂染色的头发损伤与商业永久性头发染色系统的结果相当。此外，抹茶媒染剂染色的头发的耐洗牢度的结果与永久性有色头发相当，甚至更好。
