Title:
METHOD FOR IMPROVING FASTNESS PROPERTIES OF FLUORESCENT COMPOUNDS ON HAIR
Document Type and Number:
WIPO Patent Application WO/2016/149493
Kind Code:
A3
Abstract:
Described herein is a method of treating the hair. The method includes applying to the hair a hair treatment composition including one or more fluorescent compounds and rinsing the hair with water. The one or more fluorescent compounds each include a fluorophore, one or two permanent cations, and one to four incipient cations. The incipient cations are pendant to the core structure and are neutral. The one or more fluorescent compounds enter the hair shaft after the hair treatment composition is applied to the hair. The hair treatment composition has a pH of from about 7 to about 11. The pH of the hair after rinsing is from about 3.5 to about 6. The rinsing of the hair causes one or more of the one to four incipient cations to change from neutral to positively charged inside of the hair shaft.
Inventors:
ZHANG GUIRU (US)
MURPHY BRYAN PATRICK (US)
MURPHY BRYAN PATRICK (US)
Application Number:
PCT/US2016/022866
Publication Date:
December 01, 2016
Filing Date:
March 17, 2016
Export Citation:
Assignee:
PROCTER & GAMBLE (US)
International Classes:
A61Q5/08; A61K8/49; A61Q5/06; A61Q5/10
Foreign References:
| US20110136134A1 | 2011-06-09 | |||
| FR2857258A1 | 2005-01-14 | |||
| FR2898903A1 | 2007-09-28 | |||
| EP1464322A1 | 2004-10-06 |
Attorney, Agent or Firm:
KREBS, Jay A. (Global Patent ServicesOne Procter & Gamble Plaza, C8-22, Cincinnati Ohio, US)
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