The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 1982
Filed:
Feb. 08, 1980
Mario de la Guardia, Savannah, GA (US);
Donald R Cowsar, Birmingham, AL (US);
Carson Products Company, Savannah, GA (US);
Abstract
A method and composition for curling hair and for straightening hair is disclosed, wherein the method involves the application of guanidine hydroxide to the hair. The guanidine hydroxide is prepared by mixing together in an aqueous medium at least one water-soluble guanidine salt and at least one particulate, strong-base, quaternary ammonium, hydroxide-form ion-exchange resin. After the mixed components have had a chance to undergo ion exchange, to form an aqueous solution of guanidine hydroxide, the guanidine hydroxide composition is separated from the ion-exchange resin, and applied to the hair withinin 48 hours. The treatment with guanidine hydroxide causes the hair to maintain a desired configuration by conducting the treatment with the hair in the desired configuration during at least a portion of the time that the hair is in contact with the guanidine hydroxide solution.