Method for extracting malodorous compounds present in a formulation containing at least one compound carrying a thiol group and deodorized compositions thus obtained

A process for waving the hair comprising applying to wet hair, wound on rollers having a diameter of 4 to 20 mm, a hair reducing composition comprising

• (i) an effective amount of a compound having the formula
• HS--A--Y--B
• wherein
• Y represents --COO-- or --NH-- and
• (a) when Y represents --COO--,
• A represents --(CH.sub.2).sub.n -- wherein n is 1 or 2 or ##STR7## wherein R represents linear or branched C.sub.1 -C.sub.3 alkyl, and B represents --H, --CH.sub.2 --CH.sub.2 OH, --CH.sub.2 --CHOH--CH.sub.2 OH, ##STR8## (b) when Y represents --NH--, A represents ##STR9## wherein R' represents methyl or ethyl, and B represents --H or, when A represents --CH.sub.2 --CH.sub.2 --, B also represents --CO--R" wherein R" represents linear or branched C.sub.1 -C.sub.4 alkyl, and
• (ii) a pulverulent malodorous compound removing absorbing agent which is insoluble in the composition and, when suspended in an aqueous solution containing 92 g/l of thioglycolic acid, the aqueous solution also contains at least 30 percent by weight of initial thioglycolic acid after contact for 15 minutes
• and permitting said hair reducing composition to act on said hair for a period of time ranging from 5 to 60 minutes, rinsing said hair, applying a fixing agent to the wound hair so as to reform said disulfide linkages of said hair for a period of time ranging from 2 to 10 minutes, removing said rollers and rinsing said hair.

A process for straightening or decurling hair comprising applying to said hair a composition comprising

• (i) an effective amount of a compound having the formula
• HS--A--Y--B
• wherein
• Y represents --COO-- or --NH-- and
• (a) when Y represents --COO--,
• A represents --(CH.sub.2).sub.n -- wherein n is 1 or 2 or ##STR10## wherein R represents linear or branched C.sub.1 -C.sub.3 alkyl, and B represents --H, --CH.sub.2 --CH.sub.2 OH, --CH.sub.2 --CHOH--CH.sub.2 OH, ##STR11## (b) when Y represents --NH--, A represents ##STR12## wherein R' represents methyl or ethyl, and B represents --H or, when A represents --CH.sub.2 --CH.sub.2 --, B also represents --CO--R" wherein R" represents linear or branched C.sub.1 -C.sub.4 alkyl, and
• (ii) a pulverulent malodorous compound removing absorbing agent which is insoluble in the composition and, when suspended in an aqueous solution containing 92 g/l of thioglycolic acid, the aqueous solution also contains at least 30 percent by weight of initial thioglycolic acid after contact for 15 minutes,
• mechanically reshaping said hair by smoothing said hair with a large-toothed comb so as to fix said hair in a novel shape, permitting said reshaped hair to be exposed to said composition for a period of time ranging from 5 to 60 minutes, further smoothing said hair, rinsing said hair, applying for a period of time ranging from 2 to 10 minutes a fixing agent comprising an oxidizing agent selected from the group consisting of hydrogen peroxide, an alkali metal bromate, a persalt, a polythionate and a mixture of an alkali metal bromate and a persalt and then rinsing said hair.