申请人:The Procter & Gamble Company
公开号:US20160271042A1
公开(公告)日:2016-09-22
Described herein is a method of dyeing the hair. The method includes applying to the hair a hair color composition including one or more direct dye compounds and rinsing the hair with water. The one or more direct dye compounds each include a chromophore, one or two permanent cations, and one to four incipient cations. The one to four incipient cations are pendant to the core structure and are neutral. The one or more direct dye compounds enter the hair shaft after the hair color composition is applied to the hair. The hair color composition has a pH of from about 7 to about 11. The pH of the hair after rinsing is from about 3.5 to about 6. The rinsing of the hair causes one or more of the one to four incipient cations to change from neutral to positively charged inside of the hair shaft.
本文描述了一种染发的方法。该方法包括将含有一种或多种直接染料化合物的染发剂涂抹于头发上,并用水冲洗头发。这些一种或多种直接染料化合物每种都包括色团、一个或两个永久阳离子和一个到四个潜阳离子。这些一到四个潜阳离子是悬挂在核心结构上的中性离子。在将染发剂涂抹于头发后,这些一种或多种直接染料化合物进入了头发内部。染发剂的pH值在约7至11之间。冲洗头发后,头发的pH值在约3.5至6之间。冲洗头发会导致其中一个或多个潜阳离子在头发内部从中性变为带正电荷。