US5223252.Pdf
||||||||||||||| USOO522.3252A United States Patent (19) 11) Patent Number: 5,223,252 Kolc et al. 45 Date of Patent: Jun. 29, 1993 (54) PERMANENT WAVE COMPOSITION AND METHOD FOREIGN PATENT DOCUMENTS 344653 12/1989 European Pat. Off. 75) Inventors: Stanley J. Kolc, Chicago; Richard A. 352375 1/1990 European Pat. Off. Abbott, Westmont; Arun Nandagiri, Libertyville, all of Ill. OTHER PUBLICATIONS 73) Assignee: Helene Curtis, Inc., Chicago, Ill. JP 73 14934 B-english abstract. Primary Examiner-Thurman K. Page (21) Appl. No.: 919,972 Assistant Examiner-Neil Levy Attorney, Agent, or Firm-Marshall, O'Toole, Gerstein, 22 Filed: Jul. 27, 1992 Murray & Borun 57 ABSTRACT Related U.S. Application Data A mild, alkaline permanent wave reducing composition 63 Continuation of Ser. No. 670,056, Mar. 15, 1991, aban and method of permanently waving or reshaping doned. human hair that provides a strong, long lasting curl like an alkaline permanent wave composition but leaves the 51) Int. Cl. ................................................ A61K 7/09 hair soft like an acid permanent wave composition and 52 U.S. Cl. ........................................ 424/72; 424/71; leaves essentially no post-perm odor. The composition 131/203; 131/205 contains about 2.0% to about 6.5% by weight of a cys 58) Field of Search .................... 424/72, 71; 132/203, teine reducing agent compound selected from the group 132/204, 205, 209 consisting of cysteine, a cysteine salt, and mixtures (56) References Cited thereof; about 4.5% to about 8.0% of a thioglycolate; and sufficient additional alkali, if necessary, to bring the U.S. PATENT DOCUMENTS pH of the composition within the rang of about 7.5 to about 9.5.
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