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| Number | Title | Issue Date |
| 6302920 | Composition for dyeing and bleaching of human hair and process for its preparation A flowable pulverulent bleaching or dyeing composition for human hair with improved properties of use, particularly dustlessness and good miscibility with water or aqueous hydrogen peroxide solution, is obtained by addition, preferably by a melting or spr... | 10/16/2001 |
| 6017519 | Composition for permanent waving of human hair This invention refers to a composition for permanent waving of human hair, containing thioglycolic acid or the salts thereof, preferably the ammonium salt, and comprising two compositions which are kept separate until application, whereof a Composition (A... | 01/25/2000 |
| 5989530 | Bleaching composition for human hair and process for its production A dustless, free-flowing powdery bleaching material for human hair which comprises a powdery composition of at least one solid peroxide compound and at least one pulverulent carrier material admixed with an oil and/or a liquid wax.... | 11/23/1999 |
| 5525123 | Composition for simultaneous dyeing and brightening of human hair This invention comprises a hair dyeing composition based on oxidation dyestuff precursors which dyes and brightens the hair containing, besides at least one developing and at least one coupling agent, at least one metal salt and at least one ammonium comp... | 06/11/1996 |
| 5431698 | Process for oxidative dyeing and re-dyeing of human hair A new multi-step process for dyeing human hair achieving improved coverage and gentle treatment of the hair and, in addition, allowing the production of numerous hair dye shades using a relatively small number of hair dye compositions, which process consi... | 07/11/1995 |
| 5421833 | Hair dye compositions based on oxidation dyestuff precursors Hair dye compositions without sensitizing potential but with improved dyeing properties for all shades comprise only 2-(2'-hydroxyethylamino)5-aminotoluene or the salts thereof as developing agent, or preferably in combination with the usual coupling agen... | 06/06/1995 |
