Patents Assigned to Eugene Perma
  • Ammonia-free composition for dyeing keratinous fibres
    Patent number: 6423101
    Abstract: The invention concerns an ammonia-free composition for dyeing keratinous fibers, comprising an oxidant compound, coloring agent precursors and a non-volatile odorless alkalizing agent characterized in that it further comprises: a quaternized copolymer of dimethyldiallyl ammonium and acrylic acid; a quaternized silicone; an acrylic-itaconic copolymer esterified with one or several fatty alcohol's, optionally polyoxyethylenated.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: July 23, 2002
    Assignee: Eugene Perma
    Inventors: Myriam Yaker, Guy Lascar