Patents Examined by Susn S. Rucker
  • Method and composition to condition hair and impart semi-permanent hair set retention properties
    Patent number: 4970067
    Abstract: A method of conditioning the hair and imparting semi-permanent hair set retention properties comprising treating the hair with a composition comprising a protein having a sufficient amount of an amino acid having a disulfide linkage, such as a keratin-based protein that includes the amino acid cystine. The method and composition are essentially pH independent and provide unexpectedly durable, semi-permanent hair set retention properties, and hair conditioning properties, after application to human hair.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: November 13, 1990
    Assignee: Helene Curtis, Inc.
    Inventors: Rajan K. Panandiker, Gerald P. Newell