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L’Oréal Earns Cosmetic Hair Patent



Published November 11, 2005
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Patent No. US 6,423,305 B1: L’Oréal has been awarded a patent for a cosmetic or dermatological composition to treat hair comprising at least one amido ether carboxylic acid surfactant, at least one noncrosslinked anionic polymer and at least one cationic polymer.


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