Patent · US Expired

Method for simultaneously dyeing and permanent shaping of hair

US7273058B2 · kind B2 · utility

0Cited by

2References

13Claims

0Family size

Assignee

Wella GmbH · DE

Inventors

Dieter Schonert · Bochum, DE
Anette Schmidt-Hoerr · Groß-Bieberau, DE
Uwe Lenz · Zwingenberg, DE

Key dates

Filing date	Nov 16, 2004
Grant date	Sep 25, 2007
Priority date	—
Expiry date	Aug 12, 2025

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61Q5/10
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The method for simultaneously dyeing and permanent shaping of hair includes winding hair strands onto curlers; mixing a dye component (B) containing 1 to 10 percent by weight of one or more dye compound and an amount of a keratin-reducing substance with a shaping component (A) containing from 6 to 15% by weight of the keratin-reducing substance in a weight ratio of from about 1:1 to 1:10 to form a dyeing and shaping composition, which necessarily contains from 5 to 18% by weight of the keratin-reducing substance; then allowing the hair with the dyeing and shaping composition to act on the hair for an acting time sufficient for permanent shaping; after that, allowing a fixing composition to act on the hair for 1 to 40 minutes and then subsequently rinsing the hair. The dye component (B) contains 4,5-diaminopyrazole derivatives and certain aminophenol derivatives.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.