Breaking News

L'Oréal Patents Formula For Dyeing Keratin Fibers

December 2, 2005

Patent No. U.S. 6,946,005 B2: L'Oréal, Paris, patented a pyrrolidinyl-substituted para-phenylenediamine derivative substituted with a cationic radical. The use of these derivatives is for dyeing keratin fibers.
blog comments powered by Disqus