Inventors:
Robert Wayne Glenn, Jr. - Virginia Water, GB
Charles Wayne Rees - London, GB
Oleg Alekseevich Rakitin - Moscow, RU
William David Laidig - Hamilton OH, US
John David Shaffer - Hamilton OH, US
John Michael Gardlik - Cincinnati OH, US
Bryan Patrick Murphy - Loveland OH, US
Assignee:
The Procter & Gamble Company - Cincinnati OH
International Classification:
A61K 7/13
US Classification:
8405, 8406, 8408, 8409, 8570, 8571, 8574, 8575, 8576, 5482624, 5482642, 5482662
Abstract:
Bicyclic 5-5 heteroaromatic compounds having a ring junction nitrogen and incorporating thia or oxa heteroatoms heteroatoms. Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and one or more bicyclic 5-5 heteroaromatic compounds having a ring junction nitrogen and incorporating thia or oxa heteroatoms heteroatoms. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.