The present invention relates to a process for treating keratin fibres, in particular human keratin fibres such as the hair, comprising: 1) a step of applying to the keratin fibres a composition comprising: a) one or more compounds chosen from urea and/or urea derivatives, b) one or more polyols, c) one or more amino silicones, 2) a step of heat treatment of the keratin fibres, the heat treatment step 2) preferably being after step 1). The present invention also relates to a composition that may be used in the process according to the invention.

The present invention relates to a process for treating keratin fibres, in particular human keratin fibres such as the hair, comprising: 1) a step of applying to the keratin fibres a composition comprising: a) one or more compounds chosen from urea and/or urea derivatives, b) one or more polyols, c) one or more amino silicones, 2) a step of heat treatment of the keratin fibres, the heat treatment step 2) preferably being after step 1). The present invention also relates to a composition that may be used in the process according to the invention.

The present invention is directed to a composition, process, and kit for semi-permanent straightening and curling of keratin fibers. The combination of glyoxylic acid and alkyl glyceryl ethers or alkyl polyglyceryl ethers in an emulsion provide for a thermoplastic effect which allow for improved restylability of the keratin fibers.

The present invention is directed to a composition, process, and kit for semi-permanent straightening and curling of keratin fibers. The combination of glyoxylic acid and alkyl glyceryl ethers or alkyl polyglyceryl ethers in an emulsion provide for a thermoplastic effect which allow for improved restylability of the keratin fibers.

The present invention relates to a process for reshaping keratin fibers, preferably hair, comprising the steps of: (i) applying onto the keratin fibers a composition comprising (a) at least one diol selected from C.sub.4-5 diols, wherein the composition has a pH of from 8.0 to 13.5, preferably from 8.5 to 12.0, and more preferably from 9.0 to 11.0; (ii) heating the keratin fibers; and (iii) optionally rinsing and/or drying the keratin fibers. The present invention can reshape keratin fibers without reducing and oxidizing the keratin fibers, and can provide superior reshaping efficiency, such as strong wave intensity and many curls.

The present invention relates to a process for reshaping keratin fibers, preferably hair, comprising the steps of: (i) applying onto the keratin fibers a composition comprising (a) at least one diol selected from C.sub.4-5 diols, wherein the composition has a pH of from 8.0 to 13.5, preferably from 8.5 to 12.0, and more preferably from 9.0 to 11.0; (ii) heating the keratin fibers; and (iii) optionally rinsing and/or drying the keratin fibers. The present invention can reshape keratin fibers without reducing and oxidizing the keratin fibers, and can provide superior reshaping efficiency, such as strong wave intensity and many curls.

The present invention relates to a cosmetic composition comprising: one or more dicarbonyl derivatives corresponding to formula (I) below, and/or derivatives thereof and/or hydrates thereof and/or salts thereof:

##STR00001##

in which formula (I) R═H, COOH, linear or branched C.sub.1-C.sub.6 alkyl which is optionally substituted with an OH or COOH or Br radical; phenyl or benzyl optionally substituted with an OH or COOH radical; or alternatively an indolyl radical or

##STR00002## one or more silanes corresponding to formula (II) below and/or oligomers thereof:

R.sub.1Si(OR.sub.2).sub.z(R.sub.3).sub.x(OH).sub.y  (II)

in which formula (II): R.sub.1 is a linear or branched, saturated or unsaturated, cyclic or acyclic C.sub.1-C.sub.6 hydrocarbon-based chain substituted with a group chosen from the following groups: amine NH.sub.2 or NHR (R═C.sub.1-C.sub.20 and especially C.sub.1-C.sub.6 alkyl optionally substituted with a radical comprising a silicon atom, C.sub.3-C.sub.40 cycloalkyl or C.sub.6-C.sub.30 aromatic), or with a hydroxyl group, a thiol group, an aryl or aryloxy group which is unsubstituted or substituted, in particular with an amino group or with a C.sub.1-C.sub.4 aminoalkyl group; R.sub.1 possibly being interrupted with a heteroatom (O, S or NH) or a carbonyl group (CO), R.sub.2 and R.sub.3, which may be identical or different, represent a linear or branched alkyl group comprising from 1 to 6 carbon atoms, y denotes an integer ranging from 0 to 3, and z denotes an integer ranging from 0 to 3, and x denotes an integer ranging from 0 to 2,
with z+x+y=3.

The invention also relates to a process for straightening keratin fibers, especially the hair, using the compounds of formulae (I) and (II) with a straightening step using a straightening iron at a temperature of at least 150° C., preferably ranging from 150 to 250° C.

The present invention relates to a cosmetic composition comprising: one or more dicarbonyl derivatives corresponding to formula (I) below, and/or derivatives thereof and/or hydrates thereof and/or salts thereof:

##STR00001##

in which formula (I) R═H, COOH, linear or branched C.sub.1-C.sub.6 alkyl which is optionally substituted with an OH or COOH or Br radical; phenyl or benzyl optionally substituted with an OH or COOH radical; or alternatively an indolyl radical or

##STR00002## one or more silanes corresponding to formula (II) below and/or oligomers thereof:

R.sub.1Si(OR.sub.2).sub.z(R.sub.3).sub.x(OH).sub.y  (II)

in which formula (II): R.sub.1 is a linear or branched, saturated or unsaturated, cyclic or acyclic C.sub.1-C.sub.6 hydrocarbon-based chain substituted with a group chosen from the following groups: amine NH.sub.2 or NHR (R═C.sub.1-C.sub.20 and especially C.sub.1-C.sub.6 alkyl optionally substituted with a radical comprising a silicon atom, C.sub.3-C.sub.40 cycloalkyl or C.sub.6-C.sub.30 aromatic), or with a hydroxyl group, a thiol group, an aryl or aryloxy group which is unsubstituted or substituted, in particular with an amino group or with a C.sub.1-C.sub.4 aminoalkyl group; R.sub.1 possibly being interrupted with a heteroatom (O, S or NH) or a carbonyl group (CO), R.sub.2 and R.sub.3, which may be identical or different, represent a linear or branched alkyl group comprising from 1 to 6 carbon atoms, y denotes an integer ranging from 0 to 3, and z denotes an integer ranging from 0 to 3, and x denotes an integer ranging from 0 to 2,
with z+x+y=3.

The invention also relates to a process for straightening keratin fibers, especially the hair, using the compounds of formulae (I) and (II) with a straightening step using a straightening iron at a temperature of at least 150° C., preferably ranging from 150 to 250° C.

Chemical membrane complex (CMC) in hair strands is damaged by exposure to environmental factors, and by hair processing methods that use basic solutions to permanently reshape and/or recolor hair. A CMC repair solution contains components of CMC that repair CMC while cuticle cells are lifted following coloring or perming. Hair treatment with CMC repair solution quenches reactive chemicals on hair and rebuilds damaged CMC on hair. Hair treatment with some embodiments of CMC repair solution lowers cuticle cells by reducing hair pH. Application of CMC repair solution to cuticle-lifted hair strands allows permanent hair reshaping and permanent hair coloring in a single treatment session without loss of cuticle cells or associated hair damage.

Chemical membrane complex (CMC) in hair strands is damaged by exposure to environmental factors, and by hair processing methods that use basic solutions to permanently reshape and/or recolor hair. A CMC repair solution contains components of CMC that repair CMC while cuticle cells are lifted following coloring or perming. Hair treatment with CMC repair solution quenches reactive chemicals on hair and rebuilds damaged CMC on hair. Hair treatment with some embodiments of CMC repair solution lowers cuticle cells by reducing hair pH. Application of CMC repair solution to cuticle-lifted hair strands allows permanent hair reshaping and permanent hair coloring in a single treatment session without loss of cuticle cells or associated hair damage.