Process for dyeing or lightening keratin fibres in two parts, using an oil-rich alkaline direct emulsion based on a solid nonionic surfactant with an HLB ranging from 1.5 to 10
US8961620B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2012 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Jan 9, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/882
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a process for dyeing or lightening keratin fibers, comprising the step of extemporaneously mixing at the time of use two compositions (A) and (B) and of applying the said mixture to the said fibers; the said mixture comprising at least 25% by weight of fatty substances relative to the total weight of the composition obtained from the mixing of two compositions (A)+(B); with: —(A) representing a composition in direct emulsion form whose content of oil(s) ii) is at least 30% by weight relative to the weight of composition (A), and comprising: i) at least one nonionic surfactant that is solid at room temperature and at atmospheric pressure, with an HLB ranging from 1.5 to 10; ii) at least one basifying agent; Hi) optionally at least one additional surfactant other than the solid nonionic surfactants (i), iv) optionally at least one dye; and —(B) representing a composition comprising at least one chemical oxidizing agent. A subject of the present invention is also a multi-compartment device and a composition (A) in direct emulsion form and the ready-to-use composition resulting from the mixing of compositions (A) and (B). The process according to the in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.