Patent · US Active

Multi-tonal one step dyeing

US9445977B2 · kind B2 · utility

3Cited by

0References

15Claims

0Family size

Assignee

Henkel AG & Co. KGaA · DE

Inventors

Constanze Neuba · Grevenbroich, DE
Frank Janssen · Amsterdam, NL

Key dates

Filing date	Aug 27, 2015
Grant date	Sep 20, 2016
Priority date	—
Expiry date	Aug 27, 2035

Classification

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

Abstract

A cosmetic agent (A) is applied to the fibers and allowed to act for a time period from 30 seconds to 30 minutes. Then a cosmetic agent (B) is applied to the keratinic fibers still being acted upon by agent (A), and both agents (A) and (B) are allowed to act for a time period from 5 to 45 minutes, whereupon agents (A) and (B) are rinsed out. Agent (A) (a1) contains one or more oxidation dye precursors of the developer type, (a2) contains one or more oxidation dye precursors of the coupler type, (a3) has a pH from 8.0 to 12.0, and agent (B) (b1) contains one or more oxidation dye precursors, (b2) contains one or more oxidizing agents, and (b3) has a pH from 8.0 to 12.0.

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