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AssigneeKao Germany GmbH
InventorsJonathan Wood, Alexandra Hullmann, Sandra Schmelz, Martin Uellner
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The present invention relates to a process for oxidative coloring keratin fibers especially human hair wherein dyeing compositions are thickened with a selected thickener. The objective of the present invention is a process for oxidative coloring hair wherein compositions A and B are mixed wherein composition A comprises at least one oxidative dye precursor and optionally at least one coupling agent and optionally at least one direct dye in a cosmetically acceptable medium and composition B comprises at least one oxidizing agent in a cosmetically acceptable medium, and applied onto hair and processed for 5 to 45 min at a temperature range of 20 to 45° C. and rinsed off from hair, wherein at least one of the two compositions A and B comprises a thickening polyurethane polymer.
A process for oxidative dyeing of keratin fibers especially human hair comprising the steps of:
(canceled)
Kit for oxidative colouring keratin fibers especially human hair wherein it comprises
The kit according to claim 15, wherein compositions b and c comprise at least one thickening polyurethane polymer.
The kit according to claim 16, wherein compositions a, b, c, d all comprise at least one thickening polyurethane polymer.
Dependencies are inferred from the claim text.