LAGRANGE et al v. KONRAD et al - Page 87


                     Patent Interference No. 103,548                                                                                             

                     15.  A method according to claim 9, wherein composition (B) containing,                                                     
                     at a pH of between 2 and 10, a metal anion having a good affinity for keratin                                               
                     fibers and comprising permanganate or dichromate is applied to the keratinous                                               
                     fibres and, in a second step, the composition (A) is applied at a pH or between 4                                           
                     and 10.                                                                                                                     
                                                                                                                                                
                     16.  A method according to claim 15, wherein the permanganate or dichromate                                                 
                     is used in an anion molality of higher than 10-3 moles/1,000 g up to 1 mole/1,000                                           
                     g and the compositions do not contain an organic agent having a reducing effect                                             
                     on the anions.                                                                                                              
                                                                                                                                                
                     17.  A method according to claim 9, wherein composition (A) is applied to the                                               
                     keratinous fibres and composition (B), containing a metal salt comprising a                                                 
                     manganese, cobalt, iron, copper or silver salt, is applied before or after the                                              
                     composition (A).                                                                                                            
                                                                                                                                                
                     18.  A method according to claim 17, wherein the metal salt is used in a                                                    
                     proportion of between 0.01 and 2% by weight, expressed as metal ions, relative                                              
                     to the total weight of the composition.                                                                                     
                                                                                                                                                
                     19.  A method according to claim 9, wherein composition (A) is applied and,                                                 
                     before or after this composition, composition (B) containing a rare-earth salt                                              
                     selected from the group consisting of a cerium, lanthanum, europium,                                                        
                     gadolinium, ytterbium and dysprosium salt is applied.                                                                       
                                                                                                                                                
                     20.  A method according to claim 19, wherein a the rare-earth salt is                                                       
                     present in a proportion of between 0.1 and 8% by weight relative to the                                                     
                     total weight of the composition.                                                                                            
                                                                                                                                                
                     21.   method according to claim 9, wherein a composition based on                                                           
                     hydrogen peroxide is used as the oxidizing medium, the hydrogen peroxide                                                    
                     content in the composition being between 1 and 40 volumes.                                                                  
                                                                                                                                                
                     22.  A multicomponent agent for dyeing keratinous fibres, in particular human                                               
                     keratinous fibres, comprising a first component consisting of a composition (A)                                             
                     containing a 5,6-dihydroxyindoline corresponding to formula (I):                                                            
                                                       HO                                                                                        
                                                                                         CH2                                                     
                                                                                           CH2            (I)                                    
                                                        HO                      N                                                               
                                                                                 R                                                               






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