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Method for strengthening keratinous fibers

  • US 8,529,878 B2
  • Filed: 09/03/2009
  • Issued: 09/10/2013
  • Est. Priority Date: 09/03/2008
  • Status: Expired due to Fees
First Claim
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1. A method of strengthening keratinous fibers, the method comprising contacting the fibers with a strengthening-effective amount of a composition consisting of a poly(vinylamine-vinylformamide) copolymer and an aqueous carrier wherein the poly(vinylamine-vinylformamide) copolymer is selected from the group consisting of a high molecular weight poly(vinylamine-vinylformamide) copolymer and a low molecular weight poly(vinylamine-vinylformamide) copolymer.

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