KERATINOUS FIBER TREATMENT PROCESS

Abstract

KERATINOUS FIBER TREATMENT PROCESS The present invention relates mainly to a remodeling process, preferably a smoothing process, of keratinous fibers such as hair, comprising the following steps: (i) the application of a composition A to the keratinous fibers, wherein the composition A comprises: (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof;and (b) at least one compound, different from (a) compound, selected from the group consisting of keto acids, salts thereof, and mixtures thereof, and (ii) the application of a composition B to the keratinous fibers, wherein composition B comprises: (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides, and mixtures thereof. Figure for the abstract: none;

Description

Title of the invention: PROCESS FOR TREATING KERATINOUS FIBERS Technical field

[0001] The present invention mainly relates to a process for treating, preferably remodeling and, more preferably, smoothing, keratinous fibers such as hair. STATE OF THE ART

[0002] Reshaping keratinous fibers such as hair by heating the keratinous fibers with an iron is common, making unruly keratinous fibers manageable and allowing the keratinous fibers to have less volume and a more desirable appearance. Such a reshaping process using a heated iron is convenient for quick styling, but the hairstyle only lasts for a short period of time, for example until the next shampoo. Many consumers require a long-lasting straightening process.

[0003] On the other hand, conventional permanent remodeling processes using a reducing agent and an alkaline agent, as well as an oxidizing agent, with heating, can provide keratin fibers with a long-lasting hairstyle, but they have several disadvantages such as a long processing time, damage to the keratin fibers and a bad odor.

[0004] So far, some processes for remodeling keratinous fibers without using reducing agent and oxidizing agent have been reported.

[0005] For example, WO 2015 / 036052 discloses a semi-permanent hair straightening and aftercare treatment process, which comprises the following steps, performed in this order: a. application of a smoothing composition to the hair; b. leaving the composition on the hair for 1 to 120 minutes; c. possible rinsing of hair; d. drying hair; e. treatment of hair with an iron having a surface temperature of 130 to 250°C; f. optionally rinsing and / or shampooing hair and drying; g. treatment of hair with a cleansing composition and / or a com revitalizing position, wherein the smoothing composition has a pH of 4 or lower and comprises at least one specific carboxylic acid and / or a hydrate thereof and / or a salt thereof; the cleansing composition has a pH of 4 or less and comprises one or more surfactants selected from anionic, non-ionic and amphoteric surfactants and at least one specific carboxylic acid and / or a hydrate thereof and / or a salt thereof; and the revitalizing composition has a pH of 4 or less and comprises one or more revitalizing components and at least one specific carboxylic acid and / or a hydrate thereof and / or a salt thereof.

[0006] Furthermore, WO 2016 / 102206 discloses a hair treatment process characterized in that it comprises the following steps: a. 30 to 60% of the hair length calculated on its total length from the scalp is applied an aqueous composition comprising at least one specific carboxylic acid and / or a hydrate thereof and / or a salt thereof; b. 40 to 70% of the hair length calculated as its total length from the tip of the hair is applied an aqueous composition comprising the specific carboxylic acid and / or a hydrate thereof and / or a salt thereof at a specific concentration; c. leaving the compositions on the hair for 1 to 120 min; d. optional rinsing of hair; e. drying hair; f. treatment of the hair from step “a” with an iron having a surface temperature of 190 to 230°C; g. treating the hair of step “b” with an iron having a surface temperature of 150 to 190°C; preferably 160 to 185°C, more preferably 165 to 180°C; h. optional rinsing; and i. the optional shampoo. DISCLOSURE OF THE INVENTION

[0007] There is still a need to improve the process of remodeling keratinous fibers.

[0008] An objective of the present invention is to provide an improved process for remodeling keratinous fibers such as hair, which can provide the keratinous fibers with more lasting remodeling effects.

[0009] The above objective of the present invention can be achieved by a process of remodeling keratinous fibers such as hair, comprising the following steps: a. the application of a composition A to the keratinous fibers, in which the composition A comprises:

[0010] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof; and

[0011] (b) at least one compound, different from (a) compound, selected from the group consisting of in keto acids, salts thereof and mixtures thereof, and

[0012] (ii) applying a composition B to the keratinous fibers, wherein the composition B comprises:

[0013] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof.

[0014] The amount of the (a) compound(s) in the above composition may be from 0.1% to 25% by weight, preferably from 0.3% to 20% by weight and more preferably from 0.5% to 15% by weight, relative to the total weight of composition A.

[0015] The (b) compound may be selected from levulinic acid, a salt thereof and a mixture thereof.

[0016] The amount of the (b) compound in composition A may be from 0.1% to 10% by weight, preferably from 0.3% to 8% by weight, and more preferably from 0.5% to 6% by weight, relative to the total weight of composition A.

[0017] The weight ratio of the (a) compound(s) to the (b) compound(s) included in composition A may range from 1:1 to 10:1, preferably from 1.5:1 to 7:1, and more preferably from 1.8:1 to 5:1.

[0018] The quantity of the (a) compound(s) in composition B may be from 0.1% to 10% by weight, preferably from 0.3% to 7% by weight, and more preferably from 0.5% to 5% by weight, relative to the total weight of composition B.

[0019] The pH of composition A may be 7 or less, preferably 6 or less and more preferably 5 or less.

[0020] The pH of composition B may be 7 or less, preferably 6 or less and more preferably 5 or less.

[0021] The process according to the present invention may not include an application of ammonia or a thiol compound to the keratinous fibers.

[0022] The process according to the present invention may not include an application of a reducing agent or an oxidizing agent to the keratinous fibers.

[0023] The process may further comprise a step (iii) of heating the keratinous fibers to a temperature of more than 50°C, preferably more than 100°C and more preferably more than 150°C, after step (i) and / or step (ii).

[0024] The process may further comprise a step of shampooing the keratinous fibers between steps (i) and (ii).

[0025] Step (ii) is repeated more than once.

[0026] The weight ratio of the (a) compound(s) included in composition A to the (a) compound(s) included in composition B ranges from 1:1 to 20:1, preferably from 1:1 to 15:1, and more preferably from 1:1 to 10:1.

[0027] The present invention also relates to a kit for reshaping, preferably smoothing keratinous fibers such as hair, comprising:

[0028] a composition A, comprising: a. at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof; and b. at least one compound, different from (a) compound, selected from the group consisting of keto acids, salts thereof and mixtures thereof, and

[0029] a composition B, comprising: a. at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof.

[0030] The present invention also relates to a use of a combination of a composition A and a composition B, for reshaping, preferably smoothing keratinous fibers such as hair, in which

[0031] a composition A, comprising: a. at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof; and a. at least one compound, different from (a) compound, selected from the group consisting of keto acids, salts thereof and mixtures thereof, and

[0032] a composition B comprises: a. at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof. Best mode for carrying out the invention

[0033] After extensive research, the inventors have discovered that it is possible to provide a process for remodeling keratinous fibers, which can provide keratinous fibers with improved remodeling effects with longer durability with the applications of two different compositions, a composition A and a composition B, wherein composition A comprises at least one glyoxylic acid or a derivative thereof and at least one keto acid or salts thereof, and composition B comprises at least one glyoxylic acid or a derivative thereof.

[0034] Thus, the present invention primarily relates to a process of remodeling, preference for smoothing keratinous fibers such as hair, comprising the following steps:

[0035] (i) applying a composition A to the keratinous fibers, in which the Composition A includes:

[0036] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof; and

[0037] (b) at least one compound, different from (a) compound, selected from the group consisting of in keto acids, salts thereof and mixtures thereof, and

[0038] (j) applying a composition B to the keratinous fibers, in which the composition B includes:

[0039] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof.

[0040] The present invention can improve a process of smoothing keratinous fibers such as hair, with the application of two different compositions, composition A and composition B, providing more lasting remodeling effects.

[0041] The remodeling of keratinous fibers, such as hair, herein includes the straightening or curling of the keratinous fibers.

[0042] The present invention can provide keratinous fibers such as hair with longer-lasting remodeling effects. Thus, the present invention can lengthen or prolong the remodeling effects of the keratinous fibers. In particular, the present invention can further maintain the remodeled shape of the keratinous fibers, or can prevent or suppress the loss of the remodeled shape of the keratinous fibers over time, and thus improve manageability of the keratinous fibers.

[0043] For example, if the keratinous fibers are originally wavy, the present invention may provide better prevention against a return of the keratinous fibers to their original wavy shape, after remodeling of the keratinous fibers, particularly after shampooing.

[0044] The present invention can also provide keratinous fibers with sufficient immediate remodeling effects. When the present invention has the smoothing effect, the keratinous fibers treated with the present invention may have less volume or less frizz due to the reduction of curls of the keratinous fibers. The remodeling effects provided by the present invention can last for a long time, for example, even after shampooing the keratinous fibers. Thus, the present invention can also provide the shape of keratinous fibers with good shampoo resistance.

[0045] The present invention may cause less damage to kera- tineous compared to conventional remodeling processes, because the present invention does not need to use any reducing / oxidizing agents. Thus, the keratinous fibers treated by the present invention can be easy to manage. Also, the keratinous fibers treated by the present invention can be stronger than those treated by conventional remodeling processes.

[0046] Furthermore, the present invention can use little or no ammonia or thiol compound, and therefore, the odor during the use of the present invention can be reduced compared to conventional processes that require the use of ammonia or a thiol compound. In addition, the present invention can have good ease of use, for example, a short processing time.

[0047] The present invention will now be described in detail. [Process]

[0048] The present invention relates to a method for remodeling, preferably for smoothing keratinous fibers, preferably hair, comprising the following steps:

[0049] (i) applying a composition A to the keratinous fibers, in which the Composition A includes:

[0050] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof; and

[0051] (b) at least one compound, different from (a) compound, selected from the group consisting of in keto acids, salts thereof and mixtures thereof, and

[0052] (ii) applying a composition B to the keratinous fibers, wherein the composition B comprises:

[0053] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof.

[0054] The process according to the present invention is intended to remodel keratinous fibers such as hair. In this sense, the process according to the present invention may be a semi-permanent remodeling process. {Step (i)}

[0055] Step (i) consists of applying a composition A to the keratinous fibers. Composition A will be described in detail later.

[0056] The application of composition A can be carried out by any means, such as a brush and a comb.

[0057] The bath ratio of composition A applied to the keratinous fibers may range from 0.1 to 10, more particularly from 0.5 to 5, and is preferably between 0.3 and 2 respectively. The expression "bath ratio" is intended to designate the weight ratio between the total weight of the composition applied and the total weight of the keratinous fibers.

[0058] In one embodiment of the present invention, the keratinous fibers are cleaned before step (i). This cleaning step may be carried out, for example, by shampooing the keratinous fibers and then rinsing the keratinous fibers. After rinsing, the keratinous fibers may be dried. It is preferable that the keratinous fibers are wetted just before step (i).

[0059] The amount of composition A applied to the keratinous fibers is not particularly limited, but generally ranges from 0.1 g to 1 g per 1 g of keratinous fibers.

[0060] It may be possible, after the application of composition A, to leave the keratinous fibers as they are for a certain period of time; typically from 1 minute to 1 hour, preferably from 2 to 30 minutes, and more preferably from 3 to 15 minutes, if necessary, in order to allow the composition to penetrate into the keratinous fibers.

[0061] Composition A may or may not be rinsed from the keratinous fibers after step (i). In one embodiment of the present invention, the keratinous fibers are rinsed with water to rinse the applied composition A from the keratinous fibers after step (i). {Step (ii)}

[0062] Step (ii) consists of applying a composition B to the keratinous fibers. Composition B will be described in detail later.

[0063] The application of composition B can be carried out by any means, such as a brush and a comb.

[0064] The bath ratio of composition B applied to the keratinous fibers may range from 0.1 to 10, more particularly from 0.5 to 5, and is preferably between 0.3 and 2 respectively. The expression "bath ratio" is intended to designate the weight ratio between the total weight of the composition applied and the total weight of the keratinous fibers.

[0065] The amount of composition B applied to the keratinous fibers is not particularly limited, but generally ranges from 0.1 g to 1 g per 1 g of keratinous fibers.

[0066] In one embodiment of the present invention, the keratinous fibers may be cleaned before step (ii). This cleaning step may be carried out, for example, by shampooing the keratinous fibers and then rinsing the keratinous fibers. After rinsing, the keratinous fibers may be dried. It is preferable that the keratinous fibers are wetted just before step (ii).

[0067] It may be possible, after the application of composition B, to leave the keratinous fibers as they are for a certain period of time; generally from 1 minute to 1 hour, preferably from 2 to 30 minutes, and more preferably from 3 to 15 minutes, if necessary, in order to allow the composition to penetrate into the keratinous fibers.

[0068] In one embodiment of the present invention, the keratinous fibers are rinsed with water to rinse the applied composition B from the keratinous fibers after step (ii).

[0069] The process according to the present invention may further comprise an optional step of shampooing the keratinous fibers. For example, the process according to the present invention may include the step of shampooing the keratinous fibers between steps (i) and step (ii).

[0070] The process according to the present invention may comprise step (i) then step (ii) in that order.

[0071] In one embodiment of the present invention, step (ii) is repeated. Thus, step (ii) may be repeated more than once. The process according to the present invention may comprise an optional step of rinsing the keratinous fibers with or without drying the keratinous fibers between each of the steps (ii) when step (ii) is repeated multiple times. {Step (iii)}

[0072] The process according to the present invention may comprise an optional step (iii) of heating the keratinous fibers.

[0073] Heating step (iii) may be carried out after steps (i) and / or step (ii). Similarly, heating step (iii) may be carried out between steps (i) and (ii).

[0074] Step (iii) may be a step of remodeling the keratinous fibers at a temperature of more than 50°C, preferably more than 100°C and more preferably more than 150°C.

[0075] Step (iii) can be carried out after steps (i) and (ii) have been completed.

[0076] It is preferable that the keratinous fibers are rinsed and dried just before step (iii). Drying of the keratinous fibers can be carried out with a conventional drying means such as a hair dryer.

[0077] In step (iii), the keratinous fibers, which are preferably dry, may be heated to a temperature of more than 50°C, preferably more than 100°C and more preferably more than 150°C, with a heating element, preferably a heating iron. This temperature may be less than 250°C, preferably less than 240°C, and more preferably less than 230°C. Thus, this temperature may be more than 50°C and less than 250°C, preferably more than 100°C and less than 240°C, and more preferably more than 150°C and less than 230°C.

[0078] Heating may be carried out using conventional means, such as the application of a heating iron or curler, or a hair dryer.

[0079] In addition, the reshaping may be performed by providing the keratinous fibers with any mechanical force such as mechanical tension. The mechanical tension may be applied to the keratinous fibers by any reshaping means to deform the keratinous fibers into a desired shape. For example, the mechanical power may be provided by at least one reshaping means selected from the group consisting of at least one element selected from the group consisting of an iron, a curler, a comb, a dryer, and a combination thereof, preferably at least one heated iron, a heated curler, a heated comb, or a heated dryer. Any conventional iron, curler, comb, and dryer may be used as the reshaping means.

[0080] The reshaping means may comprise at least one heater. The reshaping means may be performed with a heating iron, at least one heated curler, or a comb. By reshaping the keratinous fibers, the keratinous fibers may be straightened or curled. Thus, the process according to the present invention may be for straightening or curling keratinous fibers, such as hair.

[0081] As a heating iron, any conventional heating iron can be used. The heating iron may have at least one plate, preferably two plates, which can be heated, for example, by electric heating. The heated plate(s) can be applied to the keratinous fibers and moved along the direction of the keratinous fibers to smooth them.

[0082] It is preferable that the heating iron has two plates, and that the keratinous fibers are sandwiched between the two plates of the heating iron, in which at least one of the plates can be heated, and then the two plates are moved along the direction of the keratinous fibers to smooth them.

[0083] It is preferable that the heating iron, in particular a portion thereof in contact with the keratinous fibers, such as a heating plate or heating plates, has a temperature of more than 50°C and less than 250°C, more preferably, of more than 100°C and less than 240°C, and even more preferably, of more than 150°C and less than 230°C.

[0084] Step (iii) can be carried out by one or more passes of the heating iron along the direction of the keratinous fibers. Step (iii) can be controlled not only by the temperature of the heating iron but also by the number of passes of the heating iron.

[0085] The heating time may depend on the temperature of the heating iron, but also on the number of passes of the heating iron. It may be, for example, from 1 second to 10 minutes and preferably, from a few seconds to 5 minutes.

[0086] As a heated curler, any conventional heated curler can be used. If the keratinous fibers are wound around a heated curler, this winding can be carried out over the entire length of the keratinous fibers or, for example, for example, on half the length of the keratin fibers. Depending, for example, on the desired hairstyle shape and the amount of curls, the winding can be carried out with more or less thick strands.

[0087] It is preferable that the heated curler, in particular a portion thereof in contact with keratinous fibers, such as a heating plate or heating plates, has a temperature of more than 50°C and less than 250°C, more preferably, more than 100°C and less than 240°C, and even more preferably, more than 150°C and less than 230°C.

[0088] Step (iii) may be carried out by holding the keratinous fibers on a heated curler so that mechanical tension is applied to the keratinous fibers. Step (iii) may be controlled not only by the temperature of the heated iron but also by the strength of the mechanical tension.

[0089] The heating time may depend on the temperature of the heated curler but also on the strength of the mechanical tension. It may be, for example, from 1 second to 10 minutes and preferably, from a few seconds to 5 minutes.

[0090] If necessary, before step (iii), mechanical tension can be applied to the keratinous fibers as explained above.

[0091] In one embodiment of the present invention, step (iii) is repeated. Thus, step (iii) may be repeated more than once. The process according to the present invention may comprise an optional step of rinsing the keratinous fibers with or without drying the keratinous fibers between each of the steps (iii) when step (iii) is repeated multiple times.

[0092] In another embodiment of the present invention, step (iii) is repeated with step (ii). Thus, steps (ii) and (iii) may be repeated more than once, in that order. The process according to the present invention may comprise an optional step of rinsing the keratinous fibers with or without drying the keratinous fibers between each set of steps (ii) and (iii) when all of steps (ii) and (iii) are repeated multiple times.

[0093] The details of compositions A and B used in the process according to the present invention will be explained below. Composition A

[0094] Composition A of the present invention comprises:

[0095] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof; and

[0096] (b) at least one compound, different from (a) compound, selected from the group consisting of into keto acids, salts thereof and mixtures thereof.

[0097] (Shape)

[0098] The composition A used for the present invention may be in any form suitable for topical application, and in particular in the form of an aqueous, alcoholic or alcoholic-aqueous or oily solution or suspension; a solution or dispersion of the lotion or serum type; an emulsion, in particular of liquid or semi-liquid consistency, of the O / W, W / O or multiple type (if the composition for the present invention comprises at least one oil); a suspension or emulsion of soft consistency of the cream (O / W) or (W / O) type; an aqueous gel or any other cosmetic form.

[0099] Composition A of the present invention is preferably in the form of an emulsion, and more preferably an O / W emulsion.

[0100] The composition A used for the present invention may be in any galenic form. For example, the composition A used for the present invention may be in the form of any treatment for hair in general, such as a cream, a lotion, a gel and the like.

[0101] (pH)

[0102] Composition A used for the present invention may have a pH of 7 or less, preferably 6 or less and more preferably 5 or less, which is measured at 25°C.

[0103] Composition A used for the present invention may have a pH of 3 or higher, which is measured at 25°C.

[0104] Composition A used for the present invention may have a pH of 3 to 7, preferably 3 to 6 and more preferably 3 to 5, which is measured at 25°C.

[0105] The ingredients of composition A are described in detail below, a. Glyoxylic acid and its derivatives

[0106] Composition A of the present invention comprises (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof.

[0107] A single type of (a) compound may be used, or two or more different types of (a) compounds may be used in combination.

[0108] Compound (a) is selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof. In other words, compound (a) is selected from glyoxylic acid and derivatives thereof.

[0109] As glyoxylic acid solvates, mention may be made, for example, of glyoxylic acid hydrates such as glyoxylic acid monohydrate.

[0110] Examples of salts of glyoxylic acid that may be mentioned include alkali metal salts or alkaline earth metal salts of glyoxylic acid such as glyoxylate sodium or potassium, and magnesium or calcium glyoxylate.

[0111] As glyoxylic acid esters, mention may be made, for example, of alkyl esters glyoxylic acid such as methyl glyoxylate and ethyl glyoxylate.

[0112] Examples of glyoxylic acid amides that may be mentioned include N-glyoxyloylcarbocysteine ​​and N-glyoxyloyl keratin amino acids.

[0113] It is preferable to use glyoxylic acid as the (a) compound.

[0114] The amount of the compound(s) in composition A according to the present invention may be 0.1% by weight or more, preferably 0.3% by weight or more and, more preferably, 0.5% by weight or more, relative to the total weight of composition A.

[0115] The amount of the (a) compound(s) in composition A of the present invention may be 25% by weight or less, preferably 20% by weight or less, and more preferably 15% by weight or less, relative to the total weight of composition A.

[0116] The amount of the (a) compound(s) in composition A of the present invention may be from 0.1% to 25% by weight, preferably from 0.3% to 20% by weight and more preferably from 0.5% to 15% by weight, relative to the total weight of composition A.

[0117] In one embodiment, the amount of the (a) compound(s) in composition A of the present invention may be 8% by weight or less, preferably 5% by weight or less, and more preferably 3% by weight or less, relative to the total weight of composition A.

[0118] Thus, in one embodiment, the amount of the (a) compound(s) in composition A of the present invention may be from 0.1% to 8% by weight, preferably from 0.3% to 5% by weight and, more preferably, from 0.5% to 3% by weight, relative to the total weight of the composition.

[0119] In another embodiment, the amount of the (a) compound(s) in composition A of the present invention may be greater than 3% by weight, preferably greater than 5% by weight and, more preferably, greater than 10% by weight, relative to the total weight of composition A.

[0120] Thus, in this embodiment, the amount of the (a) compound(s) in composition A of the present invention may be greater than 3% and less than 25% by weight, preferably greater than 5% and less than 20% by weight, and more preferably greater than 10% and less than 15% by weight, relative to the total weight of composition A.

[0121] (b) Keto acid

[0122] Composition A of the present invention comprises (b) at least one compound, different from (a) compound, chosen from keto acids, their salts and their mixtures. Two or more (b) compounds may be used in combination. Thus, a single type of (b) compound or a combination of different types of (b) compounds may be used.

[0123] The keto acids may be selected from α-keto acids, β-keto acids, γ-keto acids and mixtures thereof.

[0124] The α-keto acids may be compounds represented by the general formula (I):

[0125] R'-C(=O)-COOH (I)

[0126] in which

[0127] R1 denotes a linear or branched C1-C6 alkyl group, optionally substituted by an OH, COOH or halogen atom such as a chlorine or bromine atom.

[0128] Examples of α-keto acids include pyruvic acid.

[0129] The [3-keto] acids can be represented by the general formula (II):

[0130] R2-C(=O)-R3-COOH (II)

[0131] in which

[0132] R2 denotes a linear or branched C1-C6 alkyl group, optionally substituted by an OH, COOH or halogen atom such as a chlorine or bromine atom; and

[0133] R3 denotes a methylene group, optionally substituted by a halogen atom such as a chlorine or bromine atom.

[0134] Examples of [3-keto acids include acetoacetic acid.

[0135] The γ-keto acids can be represented by the general formula (III):

[0136] R2-C(=O)-R4-COOH (III)

[0137] in which

[0138] R2 denotes a linear or branched C1-C6 alkyl group, optionally substituted by an OH, COOH or halogen atom such as a chlorine or bromine atom; and

[0139] R4 denotes an ethylene group, optionally substituted by a halogen atom such as a chlorine or bromine atom.

[0140] Examples of γ-keto acids include levulinic acid.

[0141] The keto acid salts may be alkali metal salts or alkaline earth metal salts of keto acid such as sodium or potassium salts of keto acid, and magnesium or calcium salts of keto acid.

[0142] It is preferable to use, as the (b) compound(s) (d), a γ-keto acid, and more preferably, levulinic acid and / or a salt thereof such as sodium levulinate.

[0143] The amount of the (b) compound(s) in the composition A of the present invention may be 0.1% by weight or more, preferably 0.3% by weight or more and, more preferably, 0.5% by weight or more, relative to the total weight of composition A.

[0144] The amount of the (b) compound(s) in composition A of the present invention is 10% by weight or less, preferably 8% by weight or less, and more preferably 6% by weight or less, relative to the total weight of composition A.

[0145] The amount of the (b) compound(s) in composition A according to the present invention may be from 0.1% to 10% by weight, preferably from 0.3% to 8% by weight and, more preferably, from 0.5% to 6% by weight, relative to the total weight of composition A.

[0146] In one embodiment, the amount of the (b) compound(s) in composition A of the present invention may be 5% by weight or less, preferably 4% by weight or less and, more preferably, 3% by weight or less, relative to the total weight of composition A.

[0147] Thus, in this embodiment, the amount of the (b) compound(s) in composition A according to the present invention may be from 0.1% to 5% by weight, preferably from 0.3% to 4% by weight and, more preferably, from 0.5% to 3% by weight, relative to the total weight of composition A.

[0148] In another embodiment, the amount of the (b) compound(s) in composition A of the present invention may be from 0.5% to 10% by weight, preferably from 1% to 5% by weight and, more preferably, from 2% to 4% by weight, relative to the total weight of composition A.

[0149] In another embodiment of the present invention, the (b) compound(s) is (are) present in a lower amount than the (a) compound(s) in composition A. For example, the weight ratio of the (a) compound(s) to the (b) compound(s) included in composition A may range from 1:1 to 10:1, preferably from 1.5:1 to 7:1, and more preferably from 1.8:1 to 5:1. Composition B

[0150] Composition B of the present invention comprises: a. at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof.

[0151] (Shape)

[0152] Composition B used for the present invention may be in any form suitable for topical application, and in particular in the form of an aqueous, alcoholic or alcoholic-aqueous or oily solution or suspension; a solution or dispersion of the lotion or serum type; an emulsion, in particular of liquid or semi-liquid consistency, of the O / W, W / O or multiple type (if the composition for the present invention comprises at least one oil); a suspension or emulsion of soft consistency of cream type (O / W) or (W / O); an aqueous gel or any other cosmetic form.

[0153] Composition B of the present invention is preferably in the form of an emulsion, and more preferably an O / W emulsion.

[0154] The composition B used for the present invention may be in any galenic form. For example, the compositions used for the present invention may be in the form of any treatment for hair in general, such as a cream, a lotion, a gel and the like.

[0155] (pH)

[0156] Composition B used for the present invention may have a pH of 7 or less, preferably 6 or less and more preferably 5 or less, which is measured at 25°C.

[0157] Composition B used for the present invention may have a pH of 3 or higher, which is measured at 25°C.

[0158] Composition B used for the present invention may have a pH of 3 to 7, preferably 3 to 6 and more preferably 3 to 5, which is measured at 25°C.

[0159] The ingredients of the (a) compound in composition B are the same as those explained for composition A, and the same explanations can be applied for the (a) compound in composition B.

[0160] In one embodiment of the present invention, composition A and composition B may be identical. Thus, the same composition may be used for composition A and composition B.

[0161] Thus, composition B may or may not include the (b) compound selected from the group consisting of keto acids, their salts and their mixtures. The (b) compound included in composition B is the same as that explained for composition A, and the same explanations can be applied for the (b) compound in composition B, if present.

[0162] The amount of the (a) compound(s) in composition B according to the present invention may be 0.1% by weight or more, preferably 0.3% by weight or more and, more preferably, 0.5% by weight or more, relative to the total weight of the composition.

[0163] The amount of the (a) compound(s) in composition B of the present invention is 10% by weight or less, preferably 7% by weight or less, and more preferably 5% by weight or less, relative to the total weight of composition B.

[0164] The amount of the (a) compound(s) in composition B of the present invention may be from 0.1% to 10% by weight, preferably from 0.3% to 7% by weight and, more pre preferably, from 0.5% to 5% by weight, relative to the total weight of composition B.

[0165] In one embodiment, the amount of the (a) compound(s) in composition B of the present invention may be 3% by weight or less, preferably 2% by weight or less, and more preferably 1.5% by weight or less, relative to the total weight of composition B.

[0166] Thus, in this embodiment, the amount of the (a) compound(s) in composition B of the present invention may be from 0.1% to 3% by weight, preferably from 0.3% to 2% by weight, and more preferably from 0.5% to 1.5% by weight, relative to the total weight of composition B.

[0167] In another embodiment, the amount of the (a) compound(s) in composition B of the present invention may be less than the amount of the (a) compound(s) in composition A of the present invention. For example, the weight ratio of the (a) compound(s) included in composition A to the (a) compound(s) included in composition B may range from 1:1 to 20:1, preferably from 1:1 to 15:1, and more preferably from 1:1 to 10:1.

[0168] (Other optional ingredients) - Water

[0169] Compositions A and B according to the present invention may comprise water, respectively.

[0170] Thus, if each of compositions A and B according to the present invention comprises water, compositions A and B according to the present invention are not anhydrous.

[0171] The amount of water in each of compositions A and B according to the present invention may be 20% by weight or more, preferably 30% by weight or more, and more preferably 40% by weight or more, relative to the total weight of the compositions.

[0172] Furthermore, the amount of water in each of compositions A and B according to the present invention may be 95% by weight or less, preferably 90% by weight or less and more preferably 85% by weight or less, relative to the total weight of the compositions.

[0173] The amount of water in each of the compositions according to the present invention may be from 20% to 95% by weight, preferably from 30% to 90% by weight, and more preferably from 40% to 85% by weight, relative to the total weight of each of the compositions. - Alkaline agent

[0174] Each of the compositions A and B according to the present invention may or may not comprise at least one alkaline agent. Two or more alkaline agents may be used in combination. Thus, a single type of alkaline agent or a combination of different types of alkaline agents can be used.

[0175] In one embodiment of the present invention, composition A does not comprise any alkaline agent, while composition B comprises at least one alkaline agent.

[0176] The alkaline agent may be an inorganic alkaline agent. It is preferable that the alkaline agent is non-volatile. It is preferable that the inorganic alkaline agent is selected from the group consisting of alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal phosphates and monohydrogen phosphates such as sodium phosphate or sodium monohydrogen phosphate.

[0177] Examples of the inorganic alkali metal hydroxides include sodium hydroxide, lithium hydroxide, and potassium hydroxide. Examples of the alkaline earth metal hydroxides include calcium hydroxide and magnesium hydroxide. As the inorganic alkali agent, sodium hydroxide and potassium hydroxide are preferable.

[0178] The alkaline agent may be an organic alkaline agent. It is preferable that the organic alkaline agent is selected from the group consisting of monoamines and diamines.

[0179] Examples of monoamines include alkanolamines such as mono-, di- and triethanolamine, comprising 1 to 3 hydroxyalkyl groups (C1-C4). In particular, the alkanolamines may be chosen from monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, N,N-dimethylethanolamine, 2-amino-2-methyl-1-propanol, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, 3-amino-1,2-propanediol, 3-dimethylamino-1,2-propanediol and tris(hydroxymethylamino)methane.

[0180] Diamines can be described by the structure (B) below: R. k R (B) nw-n"

[0181] wherein W denotes an alkylene such as propylene optionally substituted by a hydroxyl or C1-C4 alkyl radical, and Ra, Rb, Rc and Rd independently denote a hydrogen atom, an alkyl radical or a C1-C4 hydroxyalkyl radical, an example of which may be 1,3-propanediamine and derivatives thereof.

[0182] The amount of the alkaline agent(s) in each of compositions A and B according to the present invention may be 0.01% by weight or more, preferably 0.05% by weight or more and more preferably 0.1% by weight or more, relative to the total weight of each of the compositions.

[0183] Furthermore, the quantity of the alkaline agent(s) in each of the com positions A and B according to the present invention may be 15% by weight or less, preferably 10% by weight or less and more preferably 5% by weight or less, relative to the total weight of each of the compositions.

[0184] Thus, the amount of the alkaline agent(s) in the composition according to the present invention may be from 0.01% to 15% by weight, preferably from 0.05% to 10% by weight and, more preferably, from 0.1% to 5% by weight, relative to the total weight of each of the compositions. - Oil

[0185] Each of compositions A and B of the present invention may or may not comprise at least one oil. Two or more oils may be used in combination. Thus, a single type of oil or a combination of different types of oils may be used.

[0186] Herein, "oil" means a fatty compound or a fatty substance which is in the form of a liquid or a paste or a solid at room temperature (25°C) under atmospheric pressure (760 mmHg). As oil(s), those generally used in cosmetics may be used alone or in combination. These oils may be volatile or non-volatile.

[0187] The oil may be a non-polar oil such as a hydrocarbon-based oil, a silicone oil or the like; a polar oil such as a vegetable or animal oil and an ester oil or an ether oil; or a mixture thereof.

[0188] The oil may be selected from the group consisting of oils of vegetable or animal origin, synthetic oils, silicone oils and hydrocarbon oils.

[0189] Examples of vegetable oils include, for example, linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

[0190] Examples of synthetic oils include alkane oils such as isododecane and isohexadecane, ester oils, ether oils, and artificial triglycerides.

[0191] The ester oils are preferably liquid esters of saturated or unsaturated, linear or branched C1-C26 aliphatic monoacids or polyacids and of saturated or unsaturated, linear or branched C1-C26 aliphatic monoalcohols or polyalcohols, the total number of carbon atoms of the esters being greater than or equal to 10.

[0192] Preferably, for the monoalcohol esters, at least one of the alcohol and the acid from which the esters of the present invention are derived is branched.

[0193] Among the monoesters of monoacids and monoalcohols, mention may be made of ethyl palmitate, ethyl hexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isonanoate, isononyl isonanoate, isodecyl neopentanoate and isostearyl neopentanoate.

[0194] Esters of C4-C22 dicarboxylic or tricarboxylic acids and C1-C22 alcohols, and esters of monocarboxylic, dicarboxylic or tricarboxylic acids and C4-C26 non-sugar dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols may also be used.

[0195] Mention may in particular be made of: diethyl sebacate; isopropyl lauroyl sarcosinate; diisopropyl sebacate; bis(2-ethylhexyl) sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; bis(2-ethylhexyl) adipate; diisostearyl adipate; bis(2-ethylhexyl) maleate; triisopropyl citrate; triisocetyl citrate; triisostearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate; neopentyl glycol diheptanoate; diethylene glycol dii-sononanoate.

[0196] As ester oils, esters and diesters of sugars of C6-C30 and preferably C12-C22 fatty acids can be used. It is recalled that the term "sugar" designates compounds based on hydrocarbons carrying oxygen containing several alcohol functions, with or without aldehyde or ketone functions, and which comprise at least 4 carbon atoms. These sugars can be monosaccharides, oligosaccharides or polysaccharides.

[0197] Examples of suitable sugars that may be cited include sucrose, glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose and lactose and their derivatives, including alkyl derivatives, such as methyl derivatives, for example methylglucose.

[0198] The sugar esters of fatty acids may be chosen in particular from the group comprising the esters or mixtures of esters of sugars described above and of linear or branched, saturated or unsaturated fatty acids in C6-C30, and preferably in C12-C22*. If they are unsaturated, these compounds may have one to three conjugated or unconjugated carbon-carbon double bonds.

[0199] The esters according to this variant can also be chosen from monoesters, diesters, triesters, tetraesters, polyesters and mixtures thereof.

[0200] These esters may be, for example, oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linoleates, linolenates, caprates and arachidonates, or mixtures thereof such as, in particular, mixed esters of oleopalmitate, oleostearate and palmitostearate, as well as pentaerythrityl tetraethyl hexanoate.

[0201] More particularly, monoesters and diesters are used, and in particular monooleates or dioleates, stearates, behenates, oleopalmitates, linoleates, linolenates and oleostearates of sucrose, glucose or methylglucose.

[0202] An example that may be mentioned is the product marketed under the name Glucate® DO by the company Amerchol which is a methylglucose dioleate.

[0203] Examples of preferable ester oils include, for example, diisopropyl adipate, dioctyl adipate, 2-ethylhexyl hexanoate, ethyl laurate, cetyl octanoate, octyldodecyl octanoate, isodecyl neopentanoate, myristyl propionate, 2-ethylhexyl 2-ethylhexanoate, 2-ethylhexyl octanoate, 2-ethylhexyl caprylate / caprate, methyl palmitate, ethyl palmitate, isopropyl palmitate, dicaprylyl carbonate, isopropyl lauroyl sarcosinate, isononyl isononanoate, ethylhexyl palmitate, isohexyl laurate, hexyl laurate, stearate isocetyl, isopropyl isostearate, isopropyl myristate, isodecyl oleate, glyceryl tri(2-ethylhexanoate), pentaerythrityl tetra(2-ethylhexanoate), 2-ethylhexyl succinate, diethyl sebacate, and mixtures thereof.

[0204] Examples of artificial triglycerides include, for example, capryl caprylyl glycerides, glyceryl trimyristate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprylate, glyceryl tri(caprate / caprylate) and glyceryl tri(caprate / caprylate / linolenate).

[0205] Examples of silicone oils include, for example, linear organopolysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane and the like; cyclic organopolysiloxanes such as cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and the like; and mixtures thereof.

[0206] Preferably, the silicone oils are chosen from liquid polydialkylsiloxanes, in particular liquid polydimethylsiloxanes (PDMS) and liquid polyorganosiloxanes comprising at least one aryl group.

[0207] These silicone oils may also be organomodified. The organomodified silicones that may be used in accordance with the present invention are silicone oils as defined above and comprise in their structure one or more organofunctional groups attached via a hydrocarbon-based group.

[0208] Organopolysiloxanes are further defined in Walter Noll's Chemistry and Technology of Silicones (1968), Academie Press. They may be volatile or non-volatile.

[0209] When they are volatile, the silicones are more particularly chosen from those having a boiling point between 60°C and 260°C, and even more particularly from:

[0210] (i) cyclic polydialkylsiloxanes comprising from 3 to 7 and preferably from 4 with 5 silicon atoms. This includes, for example, octamethylcyclotetrasiloxane sold in particular under the name Volatile Silicone® 7207 by Union Carbide or Silbione® 70045 V2 by Rhodia, decamethylcyclopentasiloxane sold under the name Volatile Silicone® 7158 by Union Carbide, Silbione® 70045 V5 by Rhodia, and dodecame-ethylcyclopentasiloxane sold under the name Silsoft 1217 by Momentive Performance Materials, and mixtures thereof. Other examples include cyclocopolymers of the dimethylsiloxane / methylalkylsiloxane type, such as Silicone Volatile® FZ 3109 sold by Union Carbide, of formula:

[0211] [Chem.l] ch3

[0212] Mention may also be made of mixtures of cyclic polydialkylsiloxanes with organosilicon compounds, such as the mixture of octamethylcyclotetrasiloxane and tetramethylsilylpentaerythritol (50 / 50) and the mixture of octamethylcyclotetrasiloxane and oxy-1,r-bis(2,2',2',2',3,3'-hexatrimethylsilyloxy)neopentane;

[0213] (ii) linear volatile polydialkylsiloxanes containing 2 to 9 silicon atoms and having a viscosity less than or equal to 5x106 m2 / s at 25 °C. An example is deca-methyltetrasiloxane sold in particular under the name SH 200 by the company Toray Silicone. Silicones belonging to this category are also described in the article published in Cosmetics and Toiletries, Vol. 91, Jan. 76, pp. 27-32, Todd & Byers, Volatile Silicone Fluids for Cosmetics. The viscosity of silicones is measured at 25 °C according to ASTM 445 Appendix C.

[0214] Non-volatile polydialkylsiloxanes may also be used. These non-volatile silicones are more particularly chosen from polydialkylsiloxanes, among which mention may mainly be made of polydimethylsiloxanes containing trimethylsilyl end groups.

[0215] Among these polydialkylsiloxanes, the following commercial products may be mentioned, without limitation: • Silbione® oils from the 47 and 70 047 ranges or Mirasil® oils sold by Rhodia, for example oil 70 047 V 500 000; • oils from the Mirasil® range sold by the company Rhodia; • Dow Corning 200 range oils, such as DC200 with a viscosity of 60,000 mm2 / s; • Viscasil® oils from General Electric and certain oils from the SF range (SF 96, SF 18) from General Electric.

[0216] Mention may also be made of polydimethylsiloxanes containing terminal groups dimethylsilanol known as dimethiconol (CTFA), such as the oils in the 48 range from the Rhodia company.

[0217] Among the silicones containing aryl groups are polydiarylsiloxanes, in particular polydiphenylsiloxanes and polyalkylarylsiloxanes. Examples that may be cited include products sold under the following names: • Silbione® oils from the 70 641 range from Rhodia; • oils from the Rhodorsil® 70 633 and 763 ranges from Rhodia; • Dow Corning 556 Cosmetic Grade Fluid oil from Dow Corning; • silicones from Bayer’s PK range, such as the PK20 product; • certain oils from the General Electric SF range, such as SF 1023, SF 1154, SF 1250 and SF 1265.

[0218] Organomodified liquid silicones may in particular contain poly-ethyleneoxy and / or polypropyleneoxy groups. Examples include KF-6017 silicone offered by Shin-Etsu, and Silwet® L722 and L77 oils from Union Carbide.

[0219] The hydrocarbon oils can be chosen from: • lower C6-C16 alkanes, linear or branched, optionally cyclic. Examples that may be cited include hexane, undecane, dodecane, tridecane and isoparaffins, for example isohexadecane, isododecane and isodecane; and • linear or branched hydrocarbons containing more than 16 carbon atoms, such as liquid paraffins, liquid petroleum jelly, hydrogenated polydecenes and polyisobutenes such as Parleam® and squalane.

[0220] Preferred examples of hydrocarbon oils include, for example, linear or branched hydrocarbons such as isohexadecane, isododecane, squalane, mineral oil (e.g., liquid paraffin), paraffin, petrolatum or petroleum jelly, naphthalenes, and the like; hydrogenated polyisobutene, isoeicosane, and decene / butene copolymers; and mixtures thereof.

[0221] It is preferable that the oil is chosen from polar oils, more preferably ester oils, and even more preferably monoester oils.

[0222] The amount of the oil(s) in compositions A and B of the present invention may be 0.1% by weight or more, preferably 0.5% by weight or more, and more preferably 1% by weight or more, relative to the total weight of each of the compositions.

[0223] Furthermore, the amount of the oil(s) in each of compositions A and B according to the present invention may be 20% by weight or less, preferably 15% by weight or less, and more preferably 10% by weight or less, relative to the total weight of each of the compositions.

[0224] Thus, the quantity of the oil(s) in each of compositions A and B of the present invention may be from 0.1% to 20% by weight, preferably from 0.5% to 15% by weight and, more preferably, from 1% to 10% by weight, relative to the total weight of each of the compositions. -Fatty alcohol

[0225] Each of compositions A and B of the present invention may or may not comprise at least one fatty alcohol. A single type of fatty alcohol may be used, or two or more different types of fatty alcohols may be used in combination.

[0226] In one embodiment, compositions A and B of the present invention comprise at least one fatty alcohol.

[0227] The term "fatty" herein means the inclusion of a relatively large number of carbon atoms. Thus, alcohols that have 6 or more, preferably 8 or more, and more preferably 10 or more carbon atoms are encompassed within the scope of fatty alcohols. Fatty alcohols may be saturated or unsaturated. The fatty alcohol may be linear or branched. Two or more fatty alcohols may be used in combination.

[0228] The fatty alcohol may have the structure R-OH in which R is selected from saturated and unsaturated, linear and branched radicals containing from 8 to 40 carbon atoms, for example from 8 to 30 carbon atoms. In at least one embodiment, R is selected from C12-C24 alkyl and C12-C24 alkenyl groups. R may be substituted or not by at least one hydroxyl group.

[0229] As non-limiting examples of (h) fatty alcohols, mention may be made of lauryl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, behenyl alcohol, linoleyl alcohol, undecylenyl alcohol, palmitoleyl alcohol, arachidonyl alcohol, erucyl alcohol, cetearyl alcohol and a mixture thereof.

[0230] Examples of suitable fatty alcohols include, but are not limited to, cetyl alcohol, cetearyl alcohol, stearyl alcohol, behenyl alcohol, oleyl alcohol, and a mixture thereof.

[0231] Fatty alcohol may represent a mixture of fatty alcohols, meaning that several species of fatty alcohols may coexist, in the form of a mixture, in a commercial product.

[0232] According to at least one embodiment, the fatty alcohol used in the composition according to the present invention is chosen from a mixture of cetyl alcohol and stearyl alcohol (cetearyl alcohol).

[0233] It is preferable that the (h) fatty alcohol is selected from the group consisting of cetyl alcohol, cetearyl alcohol and stearyl alcohol.

[0234] The amount of the fatty alcohol(s) in each of compositions A and B according to the present invention may be 0.5% by weight or more, preferably 1% by weight or more, and more preferably 2% by weight or more, relative to the total weight of each of the compositions.

[0235] Furthermore, the amount of the fatty alcohol(s) in each of compositions A and B according to the present invention may be 20% by weight or less, preferably 15% by weight or less and, more preferably, 10% by weight or less, relative to the total weight of each of the compositions.

[0236] Consequently, the amount of the fatty alcohol(s) in each of compositions A and B of the present invention may be between 0.5% and 20% by weight, preferably between 1% and 15% by weight, and more preferably between 2% and 10% by weight, relative to the total weight of each of the compositions. -Non-ionic surfactant

[0237] Each of compositions A and B of the present invention may or may not comprise at least one nonionic surfactant. A single type of nonionic surfactant may be used, or two or more different types of nonionic surfactants may be used in combination.

[0238] In one embodiment, compositions A and B of the present invention comprise at least one non-ionic surfactant.

[0239] Non-ionic surfactants are compounds well known in themselves (see, for example, in this regard, "Handbook of Surfactants" by MR Porter, Blackie & Son publishers (Glasgow and London), 1991, pages 116-178). Thus, they may, for example, be chosen from alcohols, alpha-diols, alkylphenols and fatty acid esters, these compounds being ethoxylated, propoxylated or glycerolated and comprising at least one fatty chain comprising, for example, from 8 to 30 carbon atoms, knowing that the number of ethylene oxide or propylene oxide groups may range from 2 to 50, and the number of glycerol groups may range from 1 to 30. Maltose derivatives may also be mentioned.Mention may also be made, in a non-limiting manner, of copolymers of ethylene oxide and / or propylene oxide; condensates of ethylene oxide and / or propylene oxide with fatty alcohols; polyethoxylated fatty amides comprising, for example, from 2 to 30 mol of ethylene oxide; polyglycerolated fatty amides comprising, for example, from 1.5 to 5 glycerol groups, such as from 1.5 to 4; ethoxylated fatty acid esters of sorbitan comprising from 2 to 30 mol of ethylene oxide; ethoxylated oils of vegetable origin; fatty acid esters of sucrose; fatty acid esters of polyethylene glycol; mono or diesters of polyethoxylated fatty acids of alkylpolyglycosides (C6-C24) of glycerol; N-alkylglucamine (C6-C24) derivatives, amine oxides such as alkylamine (C10-C14) oxides or N-acylaminopropylmorpholine (C10-C14) oxides; silicone surfactants; and mixtures thereof.

[0240] The non-ionic surfactants may preferably be chosen from monooxyalkylenated, polyoxyalkylenated, monoglycerolated or poly- non-ionic surfactants. glycerolated. The oxyalkylene units are more particularly oxyethylene or oxypropylene units, or their combination, and are preferentially oxyethylene units.

[0241] Examples of monooxyalkylenated or polyoxyalkylenated nonionic surfactants which may be cited:

[0242] Monooxyalkylenated or polyoxyalkylenated (C8-C24) alkylphenols,

[0243] saturated or unsaturated, linear or branched, monooxyalkylenated or polyoxyalkylenated C8-C30 alcohols,

[0244] saturated or unsaturated, linear or branched, monooxyalkylenated or polyoxyalkylenated C8-C30 amides,

[0245] esters of saturated or unsaturated, linear or branched, C8-C30 acids and of monoalkylene glycol or polyalkylene glycols,

[0246] monooxyalkylenated or polyoxyalkylenated esters of saturated or unsaturated, linear or branched, C8-C30 acids and of sorbitol,

[0247] saturated or unsaturated, monooxyalkylenated or polyoxyalkylenated vegetable oils, and

[0248] condensates of ethylene oxide and / or propylene oxide, among others, alone or in mixture.

[0249] The surfactants contain a number of moles of ethylene oxide and / or propylene oxide between 1 and 100, preferably between 1 and 50 and more preferably between 1 and 20.

[0250] According to one of the embodiments of the present invention, the monooxyalkylenated nonionic surfactants may be chosen from a mono-oxyethylenated fatty alcohol (ethylene glycol ether of fatty alcohol), a monooxyethylenated fatty ester (ethylene glycol ester of fatty acid), and mixtures thereof.

[0251] Examples of monooxyalkylenated fatty esters that may be mentioned include glycol distearate.

[0252] According to one of the embodiments of the present invention, the polyoxyalkylenated nonionic surfactants may be chosen from a polyoxyethylenated fatty alcohol (ether of polyethylene glycol and fatty alcohol), a polyoxyethylenated fatty ester (ester of polyethylene glycol and fatty acid), and mixtures thereof.

[0253] As examples of polyoxyethylenated fatty alcohols (or C8-C30 alcohols), mention may be made of adducts of ethylene oxide with lauryl alcohol, in particular those containing from 2 to 20 oxyethylenated units and more particularly those containing from 2 to 10 oxyethylenated units (CTFA names Laureth-2 to Laureth-20); adducts of ethylene oxide with behenyl alcohol, in particular those containing from 2 to 20 oxyethylenated units (CTFA names Beheneth-2 to Beheneth-20); adducts of ethylene oxide with cetearyl alcohol (mixture of cetyl alcohol and stearyl alcohol), in particular those containing from 2 to 20 oxyethylenated units (CTFA names Ceteareth-2 to Ceteareth-20); adducts of ethylene oxide with cetyl alcohol, in particular those containing from 2 to 20 oxyethylenated units (CTFA names Ceteth-2 to Ceteth-20); adducts of ethylene oxide with stearyl alcohol, in particular those containing from 2 to 20 oxyethylenated units (CTFA names Steareth-2 to Steareth-20); adducts of ethylene oxide with isostearyl alcohol, in particular those comprising from 2 to 20 oxyethylenated units (CTFA names Isosteareth-2 to Isosteareth-20) and mixtures thereof.

[0254] Examples of unsaturated polyoxyethylenated fatty alcohols (or C8-C30 alcohols) that may be cited include adducts of ethylene oxide with oleyl alcohol, particularly those containing from 2 to 20 oxyethylene units and more particularly those containing from 2 to 10 oxyethylene units (Oleth-2 to Oleth-20, as CTFA names); and mixtures thereof.

[0255] It is preferable that the non-ionic surfactant is chosen from monooxyalkylenated, polyoxyalkylenated non-ionic surfactants, more preferably polyoxyalkylenated non-ionic surfactants, and even more preferably polyoxyethylenated fatty alcohols.

[0256] The amount of the non-ionic surfactant(s) in each of compositions A and B of the present invention may be 0.1% by weight or more, preferably 0.25% by weight or more and, more preferably, 0.5% by weight or more, relative to the total weight of each of the compositions.

[0257] Furthermore, the amount of the non-ionic surfactant(s) in each of compositions A and B according to the present invention may be 15% by weight or less, preferably 10% by weight or less and more preferably 5% by weight or less, relative to the total weight of each of the compositions.

[0258] Thus, the amount of the surfactant(s) in each of compositions A and B of the present invention may be from 0.1% to 15% by weight, preferably from 0.25% to 10% by weight and, more preferably, from 0.5% to 5% by weight, relative to the total weight of each of the compositions. - Polyol

[0259] Each of composition A and B of the present invention may or may not comprise at least one polyol. A single type of polyol may be used, or two or more different types of polyols may be used in combination.

[0260] In one embodiment, both compositions A and B comprise at least one polyol.

[0261] For the purposes of the present invention, the term “polyol” must be understood as designating any organic molecule comprising at least two free hydroxyl groups.

[0262] The polyol suitable for use in the invention may be a compound of linear, branched or cyclic alkyl type, saturated or unsaturated, comprising at least two -OH functions on the alkyl chain.

[0263] Preferably, the polyol is a compound of linear or branched alkyl type, preferably linear carrying at least two -OH functions, preferably 2 to 5 -OH functions, more preferably 2 to 4 -OH functions, and even more preferably 2 or 3 -OH functions on the alkyl chain.

[0264] The polyols which are advantageously suitable are those comprising in particular from 2 to 8 carbon atoms or for example from 3 to 6 carbon atoms.

[0265] The polyols may be chosen from linear or branched polyols, preferably linear polyols comprising from 3 to 8 carbon atoms; in particular: • diols such as hexylene glycol, dipropylene glycol, pentylene glycol, propylene glycol and butylene glycol; and • triols, such as glycerol (glycerin),

[0266] and mixtures thereof.

[0267] In one embodiment of the present invention, the polyol is selected from linear alkyl type polyols having 3 to 6 carbon atoms.

[0268] The polyol(s) may be present in each of compositions A and B of the present invention in an amount of 0.5% by weight or more, preferably 1% by weight or more, and more preferably 2% by weight or more, relative to the total weight of the composition.

[0269] The polyol(s) may be present in each of compositions A and B of the present invention in an amount of 20% by weight or less, preferably 15% by weight or less, and more preferably 10% by weight or less, relative to the total weight of the composition.

[0270] The amount of the polyol(s) in each of compositions A and B according to the present invention may be from 0.5% to 20% by weight, preferably from 1% to 15% by weight, and more preferably from 2% to 10% by weight, relative to the total weight of the composition. -Monoalcohol

[0271] Each of compositions A and B of the present invention may or may not comprise at least one monoalcohol. A single type of monoalcohol may be used, or two or more different types of monoalcohols may be used in combination.

[0272] In one embodiment, both compositions A and B of the present invention comprise at least one monoalcohol.

[0273] The monoalcohol herein may be a water-soluble hydrophilic monoalcohol. For the purposes of the present invention, the term "hydrophilic" means that a substance is soluble in water at a concentration of 1% by weight or more based on the total weight of water at room temperature (25°C) and atmospheric pressure (105 Pa).

[0274] The monoalcohol may be a linear or branched, saturated or unsaturated monoalcohol comprising from 1 to 8 carbon atoms, preferably from 2 to 8 carbon atoms, carrying only one hydroxyl function (OH).

[0275] In one embodiment, the monoalcohol may be an aliphatic monoalcohol having from 1 to 8 carbon atoms, preferably from 2 to 8 carbon atoms.

[0276] The term “aliphatic monoalcohol” here designates any saturated, linear or branched alkane compound, comprising only one hydroxyl (OH) function.

[0277] The aliphatic monoalcohol(s) may be chosen from ethanol, propanol, butanol, isopropanol, isobutanol and mixtures thereof.

[0278] In a preferred embodiment of the present invention, the monoalcohol may be chosen from linear aliphatic monoalcohols comprising from 1 to 8 carbon atoms, preferably from 2 to 8 carbon atoms, such as ethanol, propanol, butanol and mixtures thereof.

[0279] The amount of the monoalcohol(s) in each of compositions A and B of the present invention may be 0.1% by weight or more, preferably 0.2% by weight or more and, more preferably, 0.25% by weight or more, relative to the total weight of each of the compositions.

[0280] Furthermore, the amount of the monoalcohol(s) in each of compositions A and B according to the present invention may be 25% by weight or less, preferably 20% by weight or less and, more preferably, 15% by weight or less, relative to the total weight of each of the compositions.

[0281] Thus, the amount of the monoalcohol(s) in each of compositions A and B of the present invention may be from 0.1% to 25% by weight, preferably from 0.2% to 20% by weight and more preferably from 0.25% to 15% by weight, relative to the total weight of each of the compositions. -Optional ingredients

[0282] Each of the compositions A and B according to the present invention may also comprise at least one other optional ingredient, chosen in particular from: thickeners, such as polysaccharides; sunscreens; moisturizers; anti-dandruff agents; antioxidants; antibacterial agents, such as benzoic acid; preservatives, such as phenoxyethanol; chelating agents; pearlescent agents and opacifiers; plasticizers or coalescers; fillers; emulsifiers; polymers, in particular revitalizing polymers, such as cationic polymers; perfumes, silanes, crosslinking agents; and surfactants, including anionic and amphoteric surfactants. The composition may, of course, comprise several cosmetic ingredients appearing in the list above.

[0283] The above optional ingredient(s) may be present in normal amounts which can be easily determined by a person skilled in the art and which can be, for each ingredient, between 0.01% and 80% by weight in each of compositions A and B. A person skilled in the art will take care to choose the ingredients included in the composition, as well as their quantities, so that they do not harm the properties of the compositions used for the present invention. -Ammonia and thiol compound

[0284] It is preferable that the process according to the present invention does not include an application of ammonia or a thiol compound to the keratinous fibers. Thus, it is preferable that each of compositions A and B is free of ammonia or a thiol compound. The expression "free of ammonia or a thiol compound" means that the composition according to the present invention does not include a substantial amount of ammonia or a thiol compound.

[0285] In one embodiment, each of compositions A and B according to the present invention includes 1% by weight or less, more preferably 0.5% by weight or less, and even more preferably 0.1% by weight or less of ammonia or a thiol compound, in particular no ammonia or a thiol compound.

[0286] Due to the use of a very small amount or absence of ammonia and / or thiol compound, the bad odor during the process of the composition according to the present invention can be reduced or prevented.

[0287] The thiol compound herein refers to a compound which has at least one thiol group (-SH).

[0288] The thiol compound may be a reducing agent. The thiol reducing agent may be selected from the group consisting of thioglycolic acid and its derivatives, in particular its esters such as glycerol or glycol monothioglycolate; thiolactic acid and its derivatives, in particular its esters such as glycerol monothiolactate; 3-mercaptopropionic acid and its derivatives, in particular its esters such as glycerol 3-mercaptopropionate and ethylene glycol 3-mercaptopropionate; cysteamine and its derivatives, in particular its C1-C4 acyl derivatives such as N-acetylcysteamine and N-propionylcysteamine; mono-thioglycerol and its derivatives, in particular its esters; cysteine ​​and its derivatives, including its esters such as N-acetylcysteine, N-alkanoylcysteine ​​and cysteine ​​alkyl esters; thioglycerin and its derivatives, including its s-alkyl derivatives; and their salts.

[0289] As the above salts, mention may be made, for example, of ammonium salts; primary, secondary or tertiary amine salts; alkali metal salts and alkaline earth metal salts. As the primary, secondary or tertiary amine, for example, mention may be made of monoethanolamine, di-isopropanolamine or triethanolamine, respectively.

[0290] Other examples of thiol reducing agent include, but are not limited to, N-mercapto alkyl sugar amides such as N-(mercapto-2-ethyl)gluconamide, [3-mercaptopropionic acid and its derivatives; thiomalic acid; panthetine; N-(mercaptoalkyl)co-hydroxyalkyl amides such as those described in European Patent Application No. 0 354 835 and N-mono- or N,N-dialkylmercapto 4-butyramides such as those described in European Patent Application No. 0 368 763; aminomer-captoalkyl amides such as those described in European Patent Application No. 0 432 000 and alkylaminomercaptoalkylamides such as those described in European Patent Application No. 0 514 282; 2-hydroxypropyl thioglycolate (2 / 3) and the mixture based on 2-hydroxymethylethyl thioglycolate (67 / 33) described in French patent application No. 2,679,448. -Reducing agent and oxidizing agent

[0291] It is preferable that the process according to the present invention does not include an application of a reducing agent or an oxidizing agent to the keratinous fibers. Thus, it is preferable that each of compositions A and B is free of a reducing agent or an oxidizing agent. The expression "free of a reducing agent or an oxidizing agent" means that the composition does not include a substantial amount of a reducing agent or an oxidizing agent.

[0292] In one embodiment, each of compositions A and B of the present invention includes 1% by weight or less, more preferably 0.5% by weight or less, and even more preferably 0.1% by weight or less of a reducing agent or an oxidizing agent, in particular no reducing agent or no oxidizing agent.

[0293] The reducing agent may be a thiol reducing agent or a non-thiol reducing agent. The thiol reducing agent is as described above.

[0294] The non-thiol reducing agent herein refers to a reducing agent without a thiol group. The non-thiol reducing agent may be selected from the group consisting of sulfites, bisulfites, sulfinates, phosphines, sugars, reductones and hydrides. The non-thiol reducing agent may be selected from ammonium sulfites and bisulfites, as well as metal sulfites and bisulfites, more preferably from alkali metal or alkaline earth metal sulfites and bisulfites and more preferably from sodium sulfites and bisulfites.

[0295] The oxidizing agent may be selected from hydrogen peroxide, alkali metal bromates, ferricynaides, peroxygen salts, and compounds capable of producing hydrogen peroxide by hydrolysis. For example, the oxidizing agent may be selected from an aqueous solution of hydrogen peroxide, urea peroxide, alkali metal bromates, and persalts such as perborates and persulfates. [Necessary]

[0296] The present invention also relates to a remodeling kit, preferably for smoothing keratinous fibers such as hair, comprising the com combination of composition A and composition B of the present invention.

[0297] Thus, the present invention also relates to a kit for reshaping, preferably smoothing keratinous fibers such as hair, comprising:

[0298] a composition A, comprising:

[0299] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof; and

[0300] (b) at least one compound, different from (a) compound, selected from the group consisting of into keto acids, salts thereof and mixtures thereof, and

[0301] a composition B, comprising:

[0302] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof.

[0303] In the kit according to the present invention, composition A and composition B may be provided separately, for example, in different containers.

[0304] The kit according to the present invention may further comprise at least one selected from the group consisting of an iron, a curler, a comb, a dryer and a combination thereof, preferably at least one heating iron, a heating curler, a heating comb or a heating dryer which is capable of providing the keratinous fibers with a temperature above 50°C, preferably above 100°C, and more preferably above 150°C.

[0305] The heating element in the kit is not limited as long as it can heat the keratinous fibers to a temperature of more than 50°C, preferably more than 100°C and more preferably more than 150°C. This temperature may be less than 250°C, preferably less than 240°C, and more preferably less than 230°C. Thus, this temperature may be more than 50°C and less than 250°C, preferably more than 100°C and less than 240°C, and more preferably more than 150°C and less than 230°C.

[0306] Any conventional iron, curler, comb and dryer, including any heated curler, heated comb and heated dryer, may be used as the above iron or curler in the kit according to the present invention.

[0307] It is preferable that the heating element is a heating iron, a curler or a hair dryer, as well as compositions as explained in the section titled [Process] above. Furthermore, the details of the composition used in the kit according to the present invention are explained in the section titled [Process] above. [Use]

[0308] The present invention may relate to a use of the combination of the com position A and composition B of the present invention, for reshaping, preferably smoothing keratinous fibers such as hair.

[0309] Thus, the present invention also relates to a use of a combination of a composition A and a composition B, for reshaping, preferably smoothing keratinous fibers such as hair, in which

[0310] composition A comprises:

[0311] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof; and

[0312] (b) at least one compound, different from (a) compound, selected from the group consisting of into keto acids, salts thereof and mixtures thereof, and

[0313] a composition B comprises:

[0314] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof.

[0315] In particular, the present invention relates to a use of composition B as a post-treatment agent for remodeling keratinous fibers with the hair remodeling agent of composition A, wherein:

[0316] composition A comprises:

[0317] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof; and

[0318] (b) at least one compound, different from (a) compound, selected from the group consisting of into keto acids, salts thereof and mixtures thereof, and

[0319] a composition B, comprising:

[0320] (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof.

[0321] The use of the present invention may be carried out by heating the keratinous fiber, preferably the hair. In the use of the present invention, the heating element may be provided after applying compositions A and B to the keratinous fiber.

[0322] Heating is not limited as long as it can heat the keratinous fibers to a temperature of more than 50°C, preferably more than 100°C and more preferably more than 150°C. This temperature may be less than 250°C, preferably less than 240°C, and more preferably less than 230°C. Thus, this temperature may be more than 50°C and less than 250°C, preferably more than 100°C and less than 240°C, and more preferably more than 150°C and less than 230°C.

[0323] Details of the compositions for use according to the present invention are explained in the section entitled [Process] above. EXAMPLES

[0324] The present invention will be described in more detail by way of examples. However, these examples should not be construed as limiting the scope of the present invention. [Preparation]

[0325] Compositions A to D were prepared by mixing the ingredients shown in Table 1. The numerical values ​​for the amounts of the ingredients are all based on "% by weight" as starting materials.

[0326] [Tables 1] ABCD Isopropyl Myristate 10 10 10 10 Glycerin 4 4 4 4 Cetearyl Alcohol 8 8 8 8 Stearamidopropyl Dimethylamine 2.5 2.5 2.5 2.5 Non-ionic Surfactants - - 1 1 Glyoxylic Acid (50% by weight of MA) (D 2 2 14 14 Levulinic Acid (60% by weight of MA) (2) 1 - 4 - pH Adjuster qs pH qs pH qs pH qs pH Water qs 100 qs 100 qs 100 qs 100 Ethanol 3.5 3.5 3.5 3.5 PH 3.2 3.2 3.0 3.0

[0327] MA: Active ingredient • sold by the company WEYLCHEM under the name GLYOXO-HIGH PURE 50 (containing 50% active ingredient) • sold by the company DR STRAETMANS (EVONIK) under the name DERMOSOFT 700 B (containing 60% active ingredient) Examples 1 and 2 and Comparative Examples 1 and 2 Example 1

[0328] The process according to Example 1, including steps 1) to 5) was carried out as follows. 1. A strand of 27 cm long, bleached, slightly wavy Chinese hair (Type 3) was shampooed for 10 minutes with an SLS shampoo composition shown in Table 2 below. The numerical values ​​for the ingredient quantities are all based on "% by weight" as raw materials. The hair strand was rinsed thoroughly with tap water.

[0329] [Tables2] Shampoo SLS Hexylene glycol 1 Sodium chloride 1 Water qs 100 Coco-Betaine 9 Sodium laureth sulfate (70% by weight) 15 Preservatives 0.7 Polyquaternium-10 0.3 1. 0.12 g of composition A was applied to the strand of wet hair in 1 minute. 2. The lock of hair was left for 3 minutes at room temperature (25°C). 3. Rinse the lock of hair thoroughly with tap water. 4. The hair strand was dried with a hair dryer (Nobby NB3100, TESCOM DENKI Co., Ltd, Japan) for about 90 seconds until dry, to obtain the hair strand with one-time application according to Example 1.

[0330] A lock of hair with a seven-fold application according to Example 1 was also prepared by repeating steps 1) to 5) a total of seven times. Example 2

[0331] Example 1 was repeated, but in addition to steps 1) to 5) in Example 1, as step 6), straightening the hair strand by 3 passes with a hair straightener (ADST Premium DS2, Hakko Limited, Japan) at 180 C for 4 seconds / pass was carried out after step 5), to obtain the hair strand with an application in once according to Example 2.

[0332] A lock of hair with a seven-fold application according to Example 2 was also prepared by repeating steps 1) to 6) a total of seven times. Comparative Example 1

[0333] Example 1 was repeated, but a normal conditioner was used instead of composition A, to obtain the hair strand with a one-time application according to Comparative Example 1. The formulation of the normal conditioner is shown in Table 3 below. The numerical values ​​for the amounts of the ingredients are all based on "% by weight" as raw materials.

[0334] [Tables3] Normal Conditioner Cetearyl Alcohol 6 Cetyl Esters 1.5 Cationic Surfactant 2 Anionic Surfactant 1.1 Amodimethicone (15% MA) (3) 15 Amodimethicone (57% MA) (4) 4.5 Preservatives 0.5 Fragrance 0.9 Hydroxypropyltrimonium Hydrolyzed Wheat Protein 0.3 Glycerin 2 Water qs 100

[0335] MA: Active ingredient • sold by the Wacker company under the name BELSIL ADM LOG 1 (containing 15% active ingredient). • sold by the Wacker company under the name BELSIL ADM 4000 E (containing 57% active ingredient).

[0336] A lock of hair with a seven-fold application according to the Comparative Example 1 seven times was also prepared by repeating steps 1) to 5) a total of seven times.

[0337] Thus, Comparative Example 1 did not include both steps (i) and (ii) of the present invention. Comparative example 2

[0338] Example 1 was repeated, but composition B was used instead of composition A, to obtain the lock of hair with one-time application according to Comparative Example 2.

[0339] A lock of hair with a seven-fold application according to Comparative Example 2 was also prepared by repeating steps 1) to 5) a total of seven times.

[0340] Thus, Comparative Example 2 did not include step (i) of the present invention. [Evaluation]

[0341] The smoothing effect was evaluated by the following methods.

[0342] (Visual assessment)

[0343] The level of smoothness of the treated hair strand was visually assessed according to the following criteria.

[0344] 5: Very good

[0345] 4: Good

[0346] 3: Correct

[0347] 2: Bad

[0348] 1: Very bad

[0349] (Area analysis)

[0350] A photo of the hair strand was taken, and the do (expressed by the number of pixels) of the hair strand was determined using a free public domain software, Image J. The lower the do, the stiffer the hair strand. In addition, an increase (%) in do between do after one-time application and seven-time application was calculated by the following formula: {(pixels after seven-time application) - (pixels after one-time application)] / (pixels after one-time application) x 100.

[0351] The results are shown in Table 4 below.

[0352] [Tables4] Ex. 1 Ex. 2 Ex. Comp. 1 Ex. Comp. 2 No. of applications 1 7 1 7 1 7 1 7 Visual evaluation 3 4 5 5 3 3 3 4 Area (pixels) 1304 1239 1076 1080 1400 1466 1542 1582 Area ratio (%) -5 0 +5 +3

[0353] It is clear that the processes according to the examples, which include steps (i) and (ii), provided an improved smoothing effect with longer durability after shampooing compared to the processes according to the comparative examples. It can be said that the one or more applications of step (ii) can maintain the straight shape of the keratinous fibers even after one or more shampoos, providing the keratinous fibers improved stiff shape durability and ease of styling. Examples 3 and 4 and Comparative Examples 3 and 4 Example 3

[0354] The process according to Example 3 comprising steps 1) to 11) was carried out as follows. 1. A strand of slightly wavy Chinese hair (type 3), bleached for 10 minutes, 27 cm long, was washed with the same SLS shampoo composition as used in Example 1. The hair strand was rinsed thoroughly with tap water. 2. 0.6 g of composition C was applied to the strand of wet hair in 1 minute. 3. The hair strand was left for 10 minutes at room temperature (25°C). 4. Rinse the lock of hair thoroughly with tap water. 5. The hair strand was dried with a hair dryer (Nobby NB3100, TESCOM DENKI Co., Ltd, Japan) for about 90 seconds until dry. 6. The hair strand was straightened in 3 passes with a hair straightener (ADST Premium DS2, Hakko Limited, Japan) at 180 C, 4 seconds / pass. 7. The strand of hair was shampooed with the same composition of SLS shampoo as used in Example 1. The lock of hair was rinsed thoroughly with tap water. 8. 0.12 g of composition A was applied to the strand of wet hair in 1 minute. 9. The lock of hair was left for 3 minutes at room temperature (25°C). 10. Rinse the lock of hair thoroughly with tap water. 11. The hair strand was dried with a hair dryer (Nobby NB3100, TESCOM DENKI Co., Ltd, Japan) for about 90 seconds until dried, to obtain the hair strand with one-shot application according to Example 3.

[0355] A lock of hair with seven-fold application was also prepared by repeating steps 7) to 11) a total of seven times. Example 4

[0356] Example 3 was repeated, but in addition to steps 1) to 11) in Example 3, as step 12), the hair strand was straightened by 3 strokes with a hair straightener (ADST Premium DS2, Hakko Limited, Japan) at 180 C for 4 seconds / course was carried out after step 11), to obtain the lock of hair with one-shot application according to Example 4.

[0357] A lock of hair with seven-fold application according to Example 4 was also prepared by repeating steps 7) to 12) a total of seven times. Comparative Example 3

[0358] Example 3 was repeated, but the same normal conditioner as used in Comparative Example 1 was used instead of composition A in step 8).

[0359] A lock of hair with seven-fold application according to Comparative Example 3 was also prepared by repeating steps 7) to 11) a total of seven times.

[0360] Thus, Comparative Example 3 did not include step (ii) of the present invention. Comparative Example 4

[0361] Example 3 was repeated, but composition D was used instead of composition C in step 2) and composition B was used instead of composition A in step 8), to obtain the one-shot application hair strand according to Comparative Example 4.

[0362] A lock of hair with seven-fold application according to Comparative Example 4 was also prepared by repeating steps 7) to 11) a total of seven times.

[0363] Thus, Comparative Example 4 did not include step (i) of the present invention. [Evaluation]

[0364] The smoothing effect was evaluated by the same methods as Examples 1 and 2 and Comparative Examples 1 and 2, as below.

[0365] (Visual assessment)

[0366] The level of smoothness of the treated hair strand was visually assessed according to the following criteria.

[0367] 5: Very good

[0368] 4: Good

[0369] 3: Correct

[0370] 2: Bad

[0371] 1: Very bad

[0372] (Area analysis)

[0373] A photo of the hair strand was taken, and the do (expressed as the number of pixels) of the hair strand was determined using a free, public domain software, Image J. The lower the do, the stiffer the hair strand. In addition, an increase (%) in do between do after one-time application and seven-time application was calculated by the following formula: {(pixels after seven-time application) - (pixels after one-time application)] / (pixels after one-time application) x 100.

[0374] The results are shown in Table 5 below.

[0375] [Tables5] Ex. 3 Ex. 4 Ex. Comp. 3 Ex. Comp. 4 No. of applications 1 7 1 7 1 7 1 7 Visual evaluation 3.5 4 5 5 4 2 4 4 Area (pixels) 1119 1180 1000 1009 1120 1308 1073 1244 Area ratio (%) +5 +1 +17 +16

[0376] It is clear that the processes according to the examples, which include steps (i) and (ii), provided an improved straightening effect with longer durability after shampooing compared to the processes according to the comparative examples. It can be said that the one or more applications of step (ii) can maintain the straight shape of the keratinous fibers even after one or more shampoos, providing the keratinous fibers with an improvement in the durability of the straight shape and ease of styling.

Claims

Claims

1. A process for remodeling, preferably smoothing, keratinous fibers, such as hair, comprising the following steps: (i) applying a composition A to the keratinous fibers, wherein composition A comprises: (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof; and (b) at least one compound, different from (a) compound, selected from the group consisting of keto acids, salts thereof and mixtures thereof, and (ii) applying a composition B to the keratinous fibers, wherein composition B comprises: (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof.

2. A process according to claim 1, wherein the amount of the (a) compound(s) in composition A may be from 0.1% to 25% by weight, preferably from 0.3% to 20% by weight and, more preferably, from 0.5% to 15% by weight, relative to the total weight of composition A.

3. A process according to any preceding claim, wherein the pH of composition A is 7 or less, preferably 6 or less and, more preferably, 5 or less.

4. A process according to any preceding claim, wherein the pH of composition B is 7 or less, preferably 6 or less and, more preferably, 5 or less.

5. A process according to any preceding claim, wherein the process does not include applying ammonia or a thiol compound to the keratinous fibers, or applying a reducing agent or an oxidizing agent to the keratinous fibers.

6. A process according to any preceding claim, wherein the process further comprises the step of (iii) heating the keratinous fibers to a temperature above 50°C, preferably above 100°C, and more preferably above 150°C,

7.

8.

9.

10. after step (i) and / or step (ii). A process according to any preceding claim, further comprising a step of shampooing the keratinous fibres between steps (i) and (ii). The process of claim 7, wherein step (ii) is repeated more than once. Kit for remodeling, preferably for smoothing keratinous fibers such as hair, comprising: a composition A, comprising: (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof; and (b) at least one compound, different from (a) compound, selected from the group consisting of keto acids, salts thereof and mixtures thereof, and a composition B, comprising: (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof. Use of a combination of a composition A and a composition B, for reshaping, preferably smoothing keratinous fibers such as hair, wherein composition A comprises: (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof; and (b) at least one compound, different from (a) compound, selected from the group consisting of keto acids, salts thereof and mixtures thereof, and a composition B, includes: (a) at least one compound selected from the group consisting of glyoxylic acid, glyoxylic acid solvates, glyoxylic acid salts, glyoxylic acid esters, glyoxylic acid amides and mixtures thereof.