Patent · US Active

Methods for altering the color and appearance of hair

US9566221B2 · kind B2 · utility

1Cited by

45References

20Claims

0Family size

Assignee

L'Oreal · FR

Inventors

Michael DeGeorge · Old Bridge, US
Frédéric Legrand · Billancourt, FR

Key dates

Filing date	Nov 8, 2013
Grant date	Feb 14, 2017
Priority date	—
Expiry date	Nov 8, 2033

Classification

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

Abstract

Disclosed are methods and compositions for altering the color of hair, comprising treating the hair with a pre-alkalizing composition and then treating the hair with a color-altering composition comprising at least one direct dye and optionally at least one oxidative dye precursor.

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