The present invention relates to a process for curling keratin fibres, such as the hair, which comprises at least the rolling of said fibres around one or more curling means, the application of a reductive acidic cosmetic composition, and a step of heating said fibres. The invention also relates to the use of said cosmetic composition for curling keratin fibres which have been dyed and/or lightened beforehand.

The present invention relates to a process for curling keratin fibres, such as the hair, which comprises at least the rolling of said fibres around one or more curling means, the application of a reductive acidic cosmetic composition, and a step of heating said fibres. The invention also relates to the use of said cosmetic composition for curling keratin fibres which have been dyed and/or lightened beforehand.

The invention relates to a cosmetic composition comprising: (a) at least 2% by weight, relative to the total weight of the composition, of one or more compounds chosen from urea and/or urea derivatives, (b) one or more polymeric thickeners chosen from nonionic, cationic, amphoteric polymeric associative thickeners or anionic polymeric associative thickeners comprising one or more acrylic and/or methacrylic units. The invention also relates to the use of this composition for straightening keratin fibres. Finally the invention relates to a process for straightening keratin fibres.

The invention relates to a cosmetic composition comprising: (a) at least 2% by weight, relative to the total weight of the composition, of one or more compounds chosen from urea and/or urea derivatives, (b) one or more polymeric thickeners chosen from nonionic, cationic, amphoteric polymeric associative thickeners or anionic polymeric associative thickeners comprising one or more acrylic and/or methacrylic units. The invention also relates to the use of this composition for straightening keratin fibres. Finally the invention relates to a process for straightening keratin fibres.

The invention concerns a method for straightening keratinous fibers including: (i) a step of applying on the keratinous fibers a hair straightening composition containing at least one polyhydroxylated aromatic compound, (ii) a step of increasing the temperature of the keratinous fibers, using heating means, to a temperature ranging between 110 and 250° C.

The invention concerns a method for straightening keratinous fibers including: (i) a step of applying on the keratinous fibers a hair straightening composition containing at least one polyhydroxylated aromatic compound, (ii) a step of increasing the temperature of the keratinous fibers, using heating means, to a temperature ranging between 110 and 250° C.

Disclosed herein is hair cosmetic composition comprising a thiol-based compound selected from thiolactic acid and its derivatives or salts, and wherein the composition has a pH of less than 7. Also disclosed is a process for shaping or altering the shape of hair or caring of the hair.

Disclosed herein is hair cosmetic composition comprising a thiol-based compound selected from thiolactic acid and its derivatives or salts, and wherein the composition has a pH of less than 7. Also disclosed is a process for shaping or altering the shape of hair or caring of the hair.

A hair styling device (10) comprises first and second arms ((12), (14)), each arm having a handle portion ((18), (20)) coupled to a clamping portion ((22), (24)). The arms are coupled to each other at a first end adjacent the handle portions, allowing the clamping portions to be moveable relative to each other between an open position and a closed position in which a curl forming apparatus may be held between the clamping portions. The clamping portion (22) of the first arm (12) houses a heater element and includes a concave shaped surface heatable by the heater element. The clamping portion (24) of the second arm (14) includes a convex shaped clamping surface. When the clamping portions are in a closed position, the heatable surface of the first arm and the clamping surface of the second arm are spaced apart by a separation distance.