Process for permanent waving keratin fibers

Kit for keratin fibers, especially human hair, comprising the four compositions wherein the first composition is an aqueous composition comprising one or more reducing agents selected from sulfite and/or hydrogen sulfite salts, thiogylcolic acid and/or its salts, cysteamine and/or its salts, thioglycerin and/or its salts, glycerin esters of thioglycolic acid and/or its salts, thiolactic acid and/or its salts, cysteine or its derivatives and/or its salts, and their mixtures;

• the second composition is a non-reducing and non-oxidizing aqueous composition comprising one or more alkalizing agents selected form alkali hydroxides such as sodium hydroxide, potassium hydroxide, ammonia and its salts such as ammonium carbonate, ammonium hydrogen carbonate, ammonium carbamate, ammonium chloride, ammonium sulfate, ammonium phosphates such as ammonium dihydrogen phosphate, diammonium hydrogen phosphate, diammonium sodium phosphate, ammonium sodium hydrogen phosphate or ammonium disodium phosphate, ammonium nitrate, ammonium bromide, ammonium iodide, ammonium thiosulfate, ammonium molybdate, ammonium vanadate, ammonium sulfamate, ammonium citrate, ammonium salicylate, ammonium valerate, ammonium tartarate, ammonium benzoate, ammonium acetate, ammonium formiate and ammonium lactate, guanidine and its salts such as guanidine hydrochloride, guanidine carbonate, guanidine bicarbonate, and an alkyl or alkanol amine according to the general structure
• wherein R1, R2, and R3 are same or different H, from C1 to C4, C3 to C4 unsaturated alkyl, C3 to C4 branched alkyl, C1 to C4 hydroxyl alkyl, C3 to C4 unsaturated hydroxyl alkyl, C3 to C4 branched hydroxyl alkyl, with the condition that at least one of R1, R2, or R3 is different from H, such as monoethanolamine, diethanolamine, triethanolamine, monoethanol methylamine, monoethanoldimethylamine, di-ethanolmethylamine, monoethanolethylamine, monoethanoldiethylamine, diethanolethylamine, monoethanolpropylamine, monoethanoldipropylamine, diethanolpropylamine, monoethanolbutylamine, diethanolbutylamine and amino methyl propanol and their mixtures, preferably selected from ammonia, amino methyl propanol, monoethanolamine, sodium hydroxide, potassium hydroxide, diethanolamine, thriethanolamine, and mixtures thereof;
• the third composition is a non-reducing and non-oxidizing aqueous composition comprising one or more organic and/or inorganic acids selected from citric acid, succinic acid, lactic acid, malic acid, acetic acid, lactic acid, glycolic acid, tartaric acid, formic acid, oxalic acid, malonic acid, glutaric acid, adipic acid, maleic acid, fumaric acid and their salts and one or more inorganic acids are selected from phosphoric acid, hydrochloric acid, sulfuric acid, carbonic acid and their respective salts;
• and the fourth composition is and an aqueous composition comprising one or more oxidizing agents, being hydrogen peroxide or a bromate salt.