Patent · US Expired

Process for the simultaneous dyeing and permanent shaping of hair

US4781724A · kind A · utility

29Cited by

1References

11Claims

0Family size

Assignee

Wella GmbH · DE

Inventors

Theodor Wajaroff · Darmstadt, DE
Peter Hartmann · Darmstadt, DE
Kohei Kubo · Yokohama, JP

Key dates

Filing date	Jul 22, 1987
Grant date	Nov 1, 1988
Priority date	—
Expiry date	Jul 22, 2007

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/884
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Process for the simultaneous dyeing and permanent shaping of white and gray hair, in which the hair is first treated with a shaping composition, then rinsed with water and treated with a fixing composition, characterized in that a shaping composition is used which comprises a content of at least one red-violet dyeing xanthene dyestuff and a fixing composition with a content of at least one blue dyeing anthraquinone dyestuff. The process, according to the invention, offers the advantage that the unwanted yellow shade in white and gray hair is permanently removed during the hair shaping treatment without an additional dyeing treatment.

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