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    • 18. 发明申请
    • METHOD OF ASSESSING HAIR COLOUR CHANGES
    • 评估发色变化的方法
    • WO2015032724A1
    • 2015-03-12
    • PCT/EP2014/068537
    • 2014-09-01
    • UNILEVER PLCUNILEVER N.V.CONOPCO, INC., d.b.a. UNILEVER
    • RICHARDS, Claire, LouiseSHAW, Neil, Scott
    • A61Q5/10C09B67/44
    • G01N21/75C09B67/0083
    • The invention provides a method of assessing the potential colour protecting effect in vivo of a test formulation such as rinse-off hair treatment formulation, the method comprising the steps of: providing a sample of the test formulation to be assessed; providing a model substrate in the form of a hair switch which has been artificially coloured; applying the test formulation to the hair switch; subsequently rinsing the test formulation from the hair switch; collecting the rinse liquor and analysing it for the presence of eluted colour; characterised in that the artificial colour used to colour the hair switch is a permanent hair colorant with a shade level 1 or 2 according to the International Colour Chart (I.C.C.). The method provides improved sensitivity and differentiation, and enables the tester to compare different technologies in terms of effectiveness.
    • 本发明提供了一种评价试验制剂如漂洗头发处理制剂在体内潜在的颜色保护作用的方法,该方法包括以下步骤:提供要评估的测试制剂的样品; 提供以人造着色的头发开关形式的模型基底; 将测试配方应用于头发开关; 随后从头发开关冲洗试验制剂; 收集漂洗液并分析洗脱液的存在; 其特征在于,用于着色头发的人造颜色是根据国际颜色图(I.C.C.)的具有1或2级的永久性毛发着色剂。 该方法提供了改进的灵敏度和差异化,使得测试人员能够在有效性方面比较不同的技术。