Abstract: Provided is a process for permanently reshaping keratin fibers comprising: a) placing the keratin fibers under mechanical tension by rolling keratin fibers on a tensioning device so as to form curls, b) applying a reducing composition to the keratin fibers, c) individually covering each tensioning device rolled with keratin fibers with a cover comprising at least one heat-insulating material so as to form at least one closed space above the keratin fibers, and e) heating the keratin fibers at a constant temperature ranging from 45 to 250° C., for a period of time ranging from 1 minute to 2 hours, wherein at least one of the tensioning device and the cover comprising at least one heat-insulating material further includes at least one heat source. Also provided is a kit for permanently reshaping keratin fibers.

Abstract: The invention relates to a process for permanent reshaping of keratin fibres, in particular of the hair, comprising: a) a step of applying, to the keratin fibres, a reducing composition containing one or more reducing agents chosen from non-sulphur-containing reducing agents, protective thiols, sulphites, bisulphites or derivatives of sulphinic acid, b) an optional step of rinsing said fibres, then c) an optional step of fixing by oxidation, characterized in that the process comprises a step d) of applying, to the keratin fibres, ultrasonic waves delivered by a generator supplying mechanical vibrations of which the frequency is between 20 kHz and 1000 kHz, step d) being carried out after or during step a), it being possible for the process to optionally comprise a step e) of placing the keratin fibres under mechanical tension by means of a device capable of imposing a shape on said fibres.

Abstract: The invention relates to a leave-in hair dyeing process using a composition comprising a coloured polymer and an oil. Such a process makes it possible to obtain a coloration which is easy to carry out and which preserves the cosmetic appearance of the keratin fibres.

Abstract: The present invention relates to a process for permanent deformation of keratin fibers comprising the steps of : providing the keratin fibers with mechanical fibers a composition comprising one or several sources of ions of formula: wherein X is a group selected from the group consisting of O?, OH, NH2, O—OH, and O—COO?; then placing the keratin fibers in an occlusive space; and then heating the keratin fibers. The present invention also relates to an agent and a kit to be used for the above process.

Abstract: Disclosed herein are compositions for simultaneous shaping, dyeing, and/or lightening of keratin fibers comprising at least one disulfide direct dye and at least one organic or mineral hydroxide alkaline agent. Also disclosed herein are processes for simultaneous shaping, dyeing, and/or lightening of keratin fibers using said compositions and compartmentalized devices comprising said compositions. The compositions disclosed herein may make it possible to obtain a long-lasting dyeing effect, while limiting the degradation of the keratin fibers.

Abstract: The present invention relates to a hair coloring composition containing at least one natural dye, in particular at least one orcein, and at least one particular organic solvent. The invention also relates to a hair coloring method that comprises applying on the fibers a composition containing one or more natural dyes for a duration sufficiently long for obtaining the desired color. The invention thus provides colorings that respect the nature of the hair while offering strong, low-selectivity and resistant nuances.

Abstract: The invention relates to a keratin fiber dyeing composition comprising, in a suitable medium, at least one dye that is selected from among direct dyes and dye precursors, said cosmetic medium containing water and at least one propylene glycol derivative having formula R1(OC3H6)nOR2 (I). The inventive composition can be used to obtain strong color while retaining the softness of the treated hair.

Abstract: The present invention relates to a dye composition comprising, in a suitable dyeing medium, at least one hydrophobic direct dye whose logP is greater than 2, the suitable medium containing water, and at least one propylene glycol derivative of formula (I) below R1(OC3H6)nOR2 This composition makes it possible to obtain strong colorations. Furthermore, the coloration obtained makes it possible to achieve or even exceed the fastness obtained by oxidation dyeing.

Abstract: The invention relates to a process for permanently reshaping keratin fibres, in particular the hair, comprising: a) a step of placing the keratin fibres under mechanical tension by rolling them up on mechanical tensioning means so as to form curls, b) a step of applying a reducing composition to the keratin fibres, c) an optional step of rinsing the said fibres, and then d) a step of placing one or more means for covering the said mechanical tensioning means to form one or more closed spaces above the hair, and then e) a step of heating the said fibres at a constant temperature, to within 2° C. or 3° C., of between 45 and 250° C. for a period of between 1 minute and 2 hours, and then f) an optional step of fixing by oxidation after removing the covering means, characterized in that at least one of the said mechanical tensioning means and of the said one or more covering means includes one or more heating means.

Abstract: The present invention relates to a hair colouring composition containing at least one natural dye, in particular at least one orcein, and at least one particular organic solvent. The invention also relates to a hair colouring method that comprises applying on the fibres a composition containing one or more natural dyes for a duration sufficiently long for obtaining the desired colour. The invention thus provides colourings that respect the nature of the hair while offering strong, low-selectivity and resistant nuances.

Abstract: The present invention provides a method of making up human keratinous material with a light-sensitive makeup, in which: i. a layer of a thermally stable photochromic composition comprising a photochromic agent capable of being developed by UV radiation and an optical agent that screens UV radiation is applied to the keratinous material; and ii. the layer of composition is exposed in non uniform manner to UV radiation to excite the photochromic agent and create a light-sensitive makeup look, the screening power F of the composition as regards solar UV radiation (280 nm to 400 nm) being 2 or more.

Abstract: The present invention provides a method of applying light-sensitive makeup, said method comprising: applying a thermally stable photochromic composition to a zone being treated; irradiating the zone with light selected to develop or erase the thermally stable photochromic composition in progressive manner; and interrupting and/or modifying the characteristics of the irradiation so as to achieve the desired appearance, this appearance corresponding to partial development or erasure of the thermally stable photochromic composition.

Abstract: The present invention provides a method of making up human keratinous material with light-sensitive makeup, in which method: a thermally stable photochromic first composition comprising a photochromic agent capable of being developed under the effect of radiation of wavelength ? is applied to the keratinous material; the first composition is exposed to said radiation to develop the photochromic agent and create a light-sensitive makeup look; and the thermally stable photochromic composition is, at least temporarily and at least in part, before or after being exposed to said radiation, covered by a photoprotective layer, exposure to said radiation for developing the photochromic agent being performed through the photoprotective layer when said layer is applied before the thermally stable photochromic composition is exposed to said radiation, in order to create a light-sensitive makeup look.

Abstract: The present disclosure relates to a method for treating keratinous fibers wherein the keratinous fibers are exposed to infrared radiation comprising wavelengths ranging from 700 to 1400 nanometers, such as ranging from 750 to 1400 nanometers, and optionally wavelengths ranging from 1400 nanometers to 1 millimeter, for instance, ranging from 1400 to 25,000 nanometers, such as ranging from 1400 to 15,000 nanometers. Also disclosed herein is a a device for heating keratinous fibers, such as the hair, for the implementation of the method according to the present disclosure, comprising at least one emitter of infrared radiation, wherein the infrared radiation comprises wavelengths ranging from 700 to 1400 nanometers, such as ranging from 750 to 1400 nanometers, and wavelengths ranging from 15,000 nanometers to 1 millimeter, such as ranging from 15,000 to 25,000 nanometers.

Abstract: The present invention relates to a process for dyeing keratin fibres, which comprises the application to the fibres of a composition containing at least one cationic polymer, rinsing of the keratin fibres, the application of a composition containing at least one anionic colored polymer, and rinsing of the keratin fibres. Such a process makes it possible to obtain an improvement in the coloration of the keratin fibres.

Abstract: A subject-matter of the present invention is the use, in the coloring of keratinous fibers, of a specific anionic hydrotropic agent of formula: in which X represents CH or N, n represents an integer ranging from 0 to 12, R1 represents COOM or SO3M, R2 represents a hydroxyl or a C1-C4 alkyl, R3 represents hydrogen or a C1-C4 alkyl, R2 and R3 can together form a ring and M represents hydrogen or one or more inorganic cations providing the electrical neutrality of the compound of formula (I). The invention likewise relates to a dyeing composition comprising at least one dye and such an anionic hydrotrope and to coloring processes employing this dyeing composition.

Abstract: The present invention relates to a process for dyeing dark keratin fibres, which comprises the application to the fibres of a composition containing at least one anionic chromophore-containing coloured polyelectrolyte, wherein the application is not followed by a rinsing step. Such a process makes it possible to obtain a coloration which is easy to carry out and which preserves the cosmetic appearance of the keratin fibres.

Abstract: A subject-matter of the present invention is compositions of use in the dyeing of human keratinous fibres, comprising, in a cosmetically acceptable medium, at least one dye having a hydrophobic nature and at least one compound chosen from those of following formula (I): in which X represents O or CH2, R? represents a hydrogen, a C1-C8 alkyl or a C1-C4 hydroxyalkyl and n has a value of 1, 2 or 3. The compound of formula (I) can in particular be an alkylene carbonate or a lactone, the pH of the composition being between 2 and 6. Another subject-matter of the invention is a method for dyeing keratinous fibres involving such a composition.

Abstract: A subject-matter of the present invention is the use, in the direct dyeing of keratinous fibers, of at least one direct dye and of a specific cationic hydrotropic agent of formula: in which X represents CH or N+R6 with R6 representing a C1-C10 alkyl, R1 represents either a hydrogen or a C1-C10 alkyl, if X represents N+R6, or (CH2)nN+R3R4R5 with R3, R4 and R5, which are identical or different, representing a C1-C10 alkyl and n representing an integer between 0 and 12, if X represents CH; R2 represents a C1-C4 alkyl; p has a value 0 or 1; the electrical neutrality of the compound being provided by a cosmetically acceptable anion or a mixture of cosmetically acceptable anions. The invention likewise relates to a dyeing composition comprising at least one dye and such a cationic hydrotrope and to colouring processes employing this dyeing composition.

Abstract: The invention relates to a keratin fibre dyeing composition comprising, in a suitable medium, at least one dye that is selected from among direct dyes and dye precursors, said cosmetic medium containing water and at least one propylene glycol derivative having formula R1(OC3H6)nOR2 (I). The inventive composition can be used to obtain strong colours while retaining the softness of the treated hair.