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US 2018/0021239 A1Published application
Copolymers for improving color intensity and washfastness of temporary hair dyes
AssigneeSekisui Specialty Chemicals America, LLC
InventorDavid B. Wurm
Life of this patent
Estimating the term…
Abstract
A method for dyeing hair includes applying a polyvinyl amine copolymer solution to the hair; and applying a hair dye composition to the hair. A hair dye composition includes an aqueous base fluid; a polyvinyl amine copolymer; and an anionic or cationic hair dye. A method of making a hair dye composition includes mixing a polyvinyl amine copolymer and an anionic or cationic hair dye into an aqueous base fluid.
Claims20
A method for dyeing hair, comprising:
- applying a polyvinyl amine copolymer solution to the hair;
- and
- applying a hair dye composition to the hair.
A hair dye composition, comprising:
- an aqueous base fluid;
- a polyvinyl amine copolymer;
- and
- an anionic or cationic hair dye.
1 more element
A method of making a hair dye composition, comprising:
- mixing a polyvinyl amine copolymer and an anionic or cationic hair dye into an aqueous base fluid.
Dependencies are inferred from the claim text.