Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Bernd Nöcker0
Isabel Vega Carrascal0
Date of Patent
November 14, 2006
0Patent Application Number
107919200
Date Filed
March 2, 2004
0Patent Primary Examiner
Patent abstract
This invention relates to a hair dyeing composition showing excellent dyeing ability comprising at least one direct acting hair dye and benzylurea and/or benzyl carbamate and/or N-(2-methoxybenzyl) urea. The direct acting hair dyes are preferably selected from anionic, acidic dyestuffs. In addition to benzylurea and/or benzyl carbamate and/or N-(2-methoxybenzyl) urea compositions further comprise organic solvents as penetration enhancers. Compositions according to the invention has a pH in the range from 1 to 5 and preferably comprises polymeric thickening agents, organic and/or inorganic acids and conditioning agents.
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