Abstract: The preparation for permanently deforming hair has a pH of 6.5 to 9.5 and contains, as keratin-reducing agent, a 2-mercaptopropion-amide of the formula (I): in which R1 and R2, independently of one another, represent H, a linear or branched alkylaminoalkyl group with 2 to 8 carbon atoms, or a morpholinoalkyl group with 2 to 3 carbon atoms in the alkyl portion of the morpholinoalkyl group, with the proviso that R1 and R2 are not simultaneously H, or that R1 and R2, together with the nitrogen atom, form a five-or six-membered heterocyclic ring, which optionally contain an additional N or O and are optionally substituted with one or two OH and/or methyl groups.

Abstract: The object of the invention is a preparation for permanently deforming hair, wherein, as keratin-reducing agent, the material contains a 2-mercaptopropionamide of the general formula 1

Abstract: The oxidative hair treatment composition is made by mixing several components immediately prior to application on the hair. One component contains dehydroascorbic acid, its derivatives or salts or their mixture, is anhydrous or contains up to 10% by weight of water, and is a powder, granulate or tablet or micro-encapsulated or a suspension and another component is an aqueous, alcoholic or aqueous alcoholic preparation. In order to avoid an unpleasant mercaptan odor and provide a uniform treatment the method for permanently waving hair includes putting the hair into the desired form, treating it with a keratin-reducing agent, and then rinsing it, after which it is treated oxidatively with the above-described oxidative treatment composition and rinsed once again.

Abstract: The present invention relates to a composition and method for permanently shaping hair, in which an N,N-disubstituted mercaptoacetamide of the formula I: or a salt thereof, wherein R1 and R2 are each independently selected from the group consisting of straight-chain alkyl groups having 1 to 6 carbon atoms, branched-chain alkyl groups having 1 to 6 carbon atoms, monohydroxyalkyl groups having 1 to 6 carbon atoms, polyhydroxyalkyl groups having 1 to 6 carbon atoms and carboxyalkyl groups having 1 to 6 carbon atoms, is employed as keratin reducing agent. A process for making these mercaptoacetamides is also described as well as a novel mercaptoacetamide, N-ethyl-2′-hydroxyethyl-mercaptoacetamide. The mercaptoacetamides provide gentle and uniform shaping of hair in a pH range of 4.5 to 9.5 and do not cause allergic or sensitizing reactions.

Abstract: 1 The invention relates to a method and agents for permanently styling hair, characterised in that they contain a keratin reduction agent in the form of N,N-disubstituted mercaptoacetamide of general formula (I) or salts thereof, R1 and R2 representing a straight-chain or branched alkyl radical, monohydroxyalkyl or polyhydroxyalkyl or carboxyalkyl, each with 1 to 6 carbon atoms. The invention also relates to a method for producing these mercaptoacetamides and to the novel mercaptoacetamide N-ethyl-N-2′-hydroxy-ethylmercaptoacetamide. The inventive agent enables the hair to be styled gently and evenly, at a pH range—4.5 to 9.5—which is gentle on skin and hair, without causing allergic or sensitizing reactions.

Abstract: The aqueous ready-to-apply composition for permanent waving of hair has a pH of 4 to 8.5 and from 3 to 28% by weight of at least one N-alkylmercaptoacetamide of formula (I): wherein R represents a straight-chain alkyl group having from 3 to 6 carbon atoms or a straight-chain hydroxyalkyl group having from 3 to 6 carbon atoms; or a salt thereof; and at least one standard cosmetic additive ingredient, such as thickeners, wetting agents and emulsifiers, perfume oils, conditioners and buffer substances. The ready-to-apply composition can be made by mixing two or more components, one of which contains the N-alkylmercaptoacetamide. A method for permanent waving of hair using the ready-to-apply composition is also described. A process for making the N-alkylmercapto-acetamides includes reacting a suitable amine with methylthioglycolate under a protective gas atmosphere at temperatures that are not greater than 30° C.

Abstract: Methods of permanent shaping and volumizing hair that are gentle and prevent overcurling are described. In one method using curlers to curl the hair, an alkaline permanent shaping composition having a pH of 7.6 to 11 and including a hair keratin-reducing substance is applied to the hair and allowed to act on the hair for 5 to 30 minutes at room temperature or for 2 to 20 minutes at an elevated temperature. Then the hair is optionally rinsed with water and subsequently with an acidic aqueous intermediate rinse, which has a pH of 2 to 6.5 and includes an aliphatic organic acid. Next the hair is wound onto curlers, after which the hair is allowed to rest for 30 minutes at room temperature or 20 minutes at an elevated temperature. After the resting period the hair is treated with an oxidant-based fixative, which can be a solution of hydrogen peroxide, and the curlers are removed. The hair is subsequently rinsed with water or washed with a shampoo to remove the fixative and combed into a hair style.

Abstract: The composition for permanent shaping of hair contains, as keratin-reducing agent, a compound of the formula (I): ##STR1## or a salt thereof, wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent, independently of each other, H, a straight or branched chain alkyl or hydroxy alkyl group, with 1 to 3 carbon atoms or a carboxyl group, with the proviso that at least one of the R.sub.1, R.sub.2, R.sub.3 and R.sub.4 groups is not H, n and m are whole numbers from 1 to 3 and X is a bivalent group --O--, --CR.sub.5 R.sub.6 -- or --NR.sub.7 --, in which R.sub.5, R.sub.6 and R.sub.7 are each, independently of each other, H or straight chain or branched chain alkyl groups or hydroxyalkyl groups with 1 to 3 carbon atoms or carboxyl groups. New mercaptoacetamide compounds and methods of making them are also described. The composition for permanent shaping provides a safe and uniform shaping of hair without allergic and sensitizing reactions; it has a skin and hair safe pH range of 6.5 to 9.5.

Abstract: The aqueous composition for permanent hair-styling has a pH of from 6.5 to 9.5 and contains from 3 to 28% by weight of a compound of formula I, ##STR1## wherein A represents --CH.sub.2 --, --C.dbd.O--, --S--, --O-- and --NR-- and R is an alkyl group having from 1 to 6 carbon atoms or a hydroxyalkyl group having from 1 to 6 carbon atoms, m is an integer from 1 to 3 and n is an integer from 0 to 3, with the proviso that n=0 only when A is methylene; water and one or more cosmetic additive ingredient selected from the group consisting of thickening agents, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, opacifiers, alcohols, sugars, solubilizers, stabilizers, buffer substances, perfume oils, colorants, hair conditioning and hair treatment ingredients.

Abstract: The subject of the invention is an agent for the permanent shaping of hair, characterized in that it contains as active keratin-reducing substance a compound in accordance with the general formula ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 stand for H, carboxy or a straight- or branched-chain alkyl radical, monohydroxyalkyl radical or polyhydroxyalkyl radical with 1 to 6 carbon atoms respectively, on the condition thatnot all radicals R.sub.1 to R.sub.3 stand for H at the same time;if R.sub.1 and R.sub.2 stand for H, then R.sub.3 is carboxy or a branched alkyl, branched monohydroxyalkyl or branched polyhydroxyalkyl radical with 1 to 6 carbon atoms;if none of the radicals R.sub.1 to R.sub.2 stand for carboxy or have a branched alkyl, branched monohydroxyalkyl or branched polyhydroxyalkyl radical with 1 to 6 carbon atoms, then at least two of the radicals R.sub.1, R.sub.2 or R.sub.

Abstract: The aqueous permanent shaping composition has a pH of 6.5 to 9.5 and contains water, from 3 to 28 percent by weight of one or more mercaptoethylamines of the formula IHS--CH.sub.2 --CH.sub.2 --NR.sub.1 R.sub.2 (I),wherein R.sub.1 represents hydrogen, a straight or branched chain alkyl, hydroxyalkyl or polyhydroxyalkyl group having 1 to 6 carbon atoms; R.sub.2 represents a cyclohexyl group, a furfuryl group, a straight or branched chain hydroxyalkyl group having 1 to 6 carbon atoms or a polyhydroxyalkyl group having 1 to 6 carbon atoms; or wherein R.sub.1 and R.sub.

Abstract: The subject of the invention is a composition and a method for permanent hairwaving, in which 1-thio-.beta.-D-glucose or its salts are used as keratin-reducing active ingredients.The composition affords a gentle and even shaping of the hair in a skin- and hair protective pH range of 7.0 to 8.5, without causing allergic and sensitizing reactions.