Hair coloring compositions
US6309426A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1999 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Jun 23, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A hair coloring composition present in a single package suitable for direct application to the hair wherein the hair coloring mixture comprises: a) an oxidising agent; and b) an oxidative hair coloring agent; and wherein the combined mixture of a) and b) has a pH in the range of from about 1 to about 5 and wherein the resultant color delivered to the hair (Delta E), after at least about 1 month of storage at room temperature, is up to about 75%, preferably up to about 85%, more preferably up to about 90% and most preferably up to about 95% of the total color delivered to the hair (Delta E) from a mixture of a) and b) on application. The products are storage stable, re-usable and can provide both excellent hair coloring and in-use efficacy benefits as well as improved color development potential after storage at room temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.