Kao Germany Gmbh

Sabine Schafer

Frank Kufner

Alexandra Hullmann

Jonathan Wood

Martin Uellner

Bernd Nocker

Alexandra Hullman

The present invention concerns a process for permanent shaping of human hair used both for the permanent waving of human hair with an excellent waving effect as well as for the straightening of curled hair. Accordingly, the first object of the present invention is a process for permanent shaping hair wherein an aqueous composition comprising at least one inorganic salt is applied onto hair and optionally processed up to 20 min and optionally rinsed off and subsequently a composition comprising at least one reducing agent is applied and rinsed off from hair after a processing time of 1 to 30 min and at a temperature of 20 to 45&#xb0; C. and a composition comprising at least one oxidizing agent is applied and processed for 1 to 20 min at a temperature range of 20 to 45&#xb0; C. and rinsed off from hair.

Process for permanent shaping of human hair

The present invention concerns a process for oxidative coloring keratin fibers especially human hair wherein a pretreatment is applied onto hair prior to application of oxidative coloring agent. Accordingly, present invention is a process for oxidative dyeing of keratin fibers especially human hair wherein an aqueous composition comprising at least one inorganic salt catalyzing and/or effecting the oxidative color development reaction from oxidative dye precursors is applied onto wet or dry hair and optionally rinsed off, and subsequently an aqueous composition comprising at least one oxidative dye precursor, optionally at least one coupling agent and at least one oxidizing agent is applied onto hair and after processing of 5 to 45 min with or without use of heat, preferably at a temperature range between 20 and 45&#xb0; C., rinsed off from hair.

Process for oxidative colouring keratin fibres

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Rüsselsheim, Germany

Sabine Schafer