Compositions for treating hair and methods of use
US7722681B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2007 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Feb 25, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/432
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compositions comprising one or more acid direct dyes and an organic solvent such as propylene carbonate are described. The compositions have an oil phase content of 5 percent by weight or less. The oil phase of the compositions can include a cyclopentasiloxane and dimethiconol. The compositions can be applied to hair that has been previously dyed with an oxidative hair dye composition to restore color to the hair. The compositions can also be applied to hair that has not been previously treated with an oxidative hair dye composition. Methods of applying these compositions to hair are also described. The methods involve applying the composition to wet hair, allowing the composition to remain on the hair, and subsequently rinsing the composition from the hair with water. The hair may be treated with a conditioner before applying the compositions to the hair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.