Hair Conditioning Composition

Description

Hair Conditioning Composition TECHNICAL FIELD

[0001] The present invention relates to a composition for conditioning hair. The present invention also relates to a process for conditioning hair. BACKGROUND OF THE INVENTION

[0002] Hair is generally damaged and weakened by the action of external atmospheric agents such as light, weather and / or by the action of mechanical or chemical treatments, such as brushing, combing, dyeing, bleaching, perming and / or straightening.

[0003] There are many products developed for hair conditioning.

[0004] The current hair oil market is dominated by oils containing silicones. However, many consumers prefer silicone-free hair oil products, and therefore silicone-free products are growing worldwide.

[0005] Therefore, the aim is to develop Si-free oil products for hair conditioning that can provide a conditioning effect similar to that of silicone-based oil products and do not impart an oily feel.

[0006] It is also desirable that the products be stable.

[0007] Furthermore, the formulation of environmentally friendly cosmetic products, designed and developed with environmental issues in mind, is becoming an important goal in addressing global challenges. Therefore, it is essential to propose more sustainable compositions to deal with these environmental concerns.

[0008] In this context, it is important to develop new cosmetic compositions with a better carbon footprint, particularly by promoting the use of renewable raw materials and / or materials with a good naturalness index and / or materials of natural origin and, more Petition 870250086812, dated 09 / 25 / 2025, page 7 / 32 2 / 17 particularly, materials of plant origin, reducing the use of petrochemical-based compounds. SUMMARY OF THE INVENTION

[0009] One objective of the present invention is, therefore, to develop stable, Si-free oily products for hair conditioning that can provide a conditioning effect similar to or superior to that of silicone-based oily products and do not impart an oily feel, while also being environmentally friendly.

[0010] Another objective of the present invention is to provide a process for conditioning hair.

[0011] Thus, according to a first aspect, the present invention provides an oily composition for hair conditioning comprising: a) at least one unsaturated fatty alcohol comprising a C12-C20 carbon chain; b) at least one volatile alkane; and c) at least one fatty acid ester oil, in which the composition does not contain silicone.

[0012] According to a second aspect, the present invention provides a process for conditioning hair, comprising applying the composition described above to the hair.

[0013] The inventors discovered that, with the combination of at least one unsaturated fatty alcohol comprising a C12-C20 carbon chain, at least one volatile alkane and at least one fatty acid ester, the composition of the present invention is stable and can provide the hair conditioning effect and the feeling of lightness. Here, the term feeling of lightness means non-greasy sensory feel.

[0014] Other matters and features, aspects and advantages of the present invention will become even clearer by reading the detailed description and examples that follow. Petition 870250086812, dated 09 / 25 / 2025, page 8 / 32 3 / 17 DETAILED DESCRIPTION OF THE INVENTION

[0015] As used herein, unless otherwise indicated, the limits of a range of values ​​are included in that range, in particular in the expressions between... and... and from... to....

[0016] As used herein, the term including should be interpreted as encompassing all the features specifically mentioned, as well as those that are optional, additional and unspecified.

[0017] As used in this invention, the use of the term comprising also describes the embodiment in which no other feature besides those specifically mentioned is present (i.e., consisting of).

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning commonly understood by those skilled in the field to which the present invention pertains. Where the definition of a term in the present description conflicts with the meaning commonly understood by those skilled in the field to which the present invention pertains, the definition described herein shall apply.

[0019] Unless otherwise specified, all numerical values ​​expressing the quantity of ingredients and the like used in the description and claims are to be understood as modified by the term approximately. Consequently, unless indicated otherwise, the numerical values ​​and parameters described herein are approximate values ​​that may be altered according to the desired performance obtained as needed.

[0020] As used in this invention, the expression "at least one" used in this description is equivalent to the expression "one or more".

[0021] According to the first aspect, the oil composition Petition 870250086812, dated 09 / 25 / 2025, p. 9 / 32 4 / 17 of this invention comprises: a) at least one unsaturated fatty alcohol comprising a C12-C20 carbon chain; b) at least one volatile alkane; and c) at least one fatty acid ester oil, where the composition does not contain silicone. Unsaturated fatty alcohols

[0022] The composition of the present invention comprises at least one unsaturated fatty alcohol comprising a C12-C20 carbon chain.

[0023] Preferably, the unsaturated fatty alcohol is selected from unsaturated fatty monoalcohol comprising a C12-C20 carbon chain.

[0024] More preferably, the unsaturated fatty alcohol is selected from a linear unsaturated fatty monoalcohol comprising a C14-C20 carbon chain.

[0025] In some embodiments, the unsaturated fatty alcohol has the structure R-OH, where R represents a linear alkenyl group comprising 12 to 20 carbon atoms, preferably 14 to 20 carbon atoms.

[0026] More preferably, the unsaturated fatty alcohol is oleyl alcohol.

[0027] As an example of commercial products of linear unsaturated fatty monoalcohol comprising a C12C20 carbon chain, one can cite oleyl alcohol marketed under the name HD OCENOL 80 / 85 V / MB by BASF or under the name CRODACOL A 10 by CRODA.

[0028] Advantageously, unsaturated fatty alcohol is present in the composition of the present invention in an amount ranging from 1% by weight to 20% by weight, preferably from 1.5% by weight to 15%. Petition 870250086812, dated 09 / 25 / 2025, page 10 / 32 5 / 17 by weight, more preferably from 2% by weight to 10% by weight, in relation to the total weight of the composition. Volatile alkanes

[0029] The composition of the present invention comprises at least one volatile alkane.

[0030] The term “alkane” refers to any compound comprising a saturated linear or branched hydrocarbon chain consisting exclusively of carbon and hydrogen atoms.

[0031] The term “volatile alkane” suitable for use in the present invention refers to an alkane capable of evaporating on contact with the skin in less than one hour, at room temperature (25oC) and atmospheric pressure (760 mmHg, i.e., 101 325 Pa), which is liquid at room temperature, especially having an evaporation rate ranging from 0.01 to 15 mg / cm2 / minute, at room temperature (25oC) and atmospheric pressure (760 mmHg).

[0032] Among the volatile alkanes according to the present invention, mention may be made of: volatile linear alkanes; volatile branched alkanes; and their mixtures. a) Volatile linear alkanes

[0033] Suitable linear volatile alkanes for use in the present invention are preferably selected from linear volatile alkanes comprising from 7 to 14 carbon atoms.

[0034] As examples of alkanes suitable for the present invention, mention may be made of the alkanes described in patent applications WO 2007 / 068371 and WO 2008 / 155059 of the company Cognis (mixtures of distinct alkanes differing in at least one carbon). These alkanes are obtained from fatty alcohols, which by their Petition 870250086812, dated 09 / 25 / 2025, page 11 / 32 Six to seventeen times they are obtained from copra oil or palm oil.

[0035] Examples of linear alkanes suitable for use in the present invention include n-heptane (C7), n-octane (C8), n-nonane (C9), n-decane (C10), n-undecane (C11), n-dodecane (C12), n-tridecane (C13) and n-tetradecane (C14), and mixtures thereof.

[0036] According to a preferred embodiment, the n-undecane (C11) and n-tridecane (C13) mixtures obtained in Examples 1 and 2 of patent application WO 2008 / 155059 of the company Cognis may be mentioned.

[0037] Mention may also be made of n-dodecane (C12) and n-tetradecane (C14), marketed by Sasol under the respective references Parafol 12 97 and Parafol 14 97, as well as their mixtures. b) Volatile branched alkanes

[0038] Among the branched volatile alkanes, one can mention the branched C8-C16 alkanes, for example, petroleum-derived C8-C16 isoalkanes (also known as isoparaffins), for example, isododecane (also known as 2,2,4,4,6-pentamethylheptane), isodecane and isohexadecane, and mixtures thereof. Isododecane and isohexadecane will preferably be used.

[0039] Preferably, the composition of the present invention comprises at least one volatile alkane selected from linear C7-C14 alkanes, branched C8-C16 alkanes and mixtures thereof.

[0040] More preferably, the composition of the present invention comprises at least one volatile alkane selected from n-undecane (C11), n-tridecane (C13), isododecane, isohexadecane and mixtures thereof.

[0041] Even more preferably, the composition of the present invention comprises a combination of n-undecane (C11), n-tridecane (C13), isododecane and isohexadecane.

[0042] Advantageously, the volatile alkane is present in the composition Petition 870250086812, dated 09 / 25 / 2025, p. 12 / 32 7 / 17 The present invention is incorporated in an amount ranging from 1% by weight to 90% by weight, preferably from 10% by weight to 80% by weight, more preferably from 20% by weight to 80% by weight, relative to the total weight of the composition. Fatty acid ester oils

[0043] According to the first aspect, the composition of the present invention comprises at least one fatty acid ester oil.

[0044] Advantageously, fatty acid ester oil is selected from liquid monoesters of branched, saturated or unsaturated C3-C26 aliphatic monoacids or polyacids, and of branched, saturated or unsaturated C3-C26 aliphatic monoalcohol or polyalcohol.

[0045] In the context of the present invention, the term oil means a greasy substance that is found in liquid form at ambient temperature and atmospheric pressure.

[0046] The fatty acid ester oil of the present invention consists of liquid monoesters of branched, saturated or unsaturated C3-C26 aliphatic monoacids and branched, saturated or unsaturated C3-C26 aliphatic monoalcohols, the total number of carbon atoms of the esters preferably being greater than or equal to 10, and preferably less than or equal to 30.

[0047] Preferably, the fatty acid ester oil may consist of liquid monoesters of branched, saturated or unsaturated C3-C22 aliphatic monoacids and branched, saturated or unsaturated C3-C20 aliphatic monoalcohols. More preferably, the ester oil may be liquid monoesters of branched, saturated C6-C20 aliphatic monoacids and branched, saturated C2-C6 aliphatic monoalcohols.

[0048] Preferred esters may have the following formula: Ri-C(=O)-O-R2 Petition 870250086812, dated 09 / 25 / 2025, p. 13 / 32 8 / 17 where Ri represents a branched alkyl radical of 3 to 22 carbon atoms, preferably 6 to 20 carbon atoms, and R2 represents a branched alkyl radical of 3 to 20 carbon atoms, preferably 3 to 6 carbon atoms.

[0049] Preferably, the total number of carbon atoms of Ri + R2 can be 9 or more, preferably 12 or more, more preferably 16 or more, and most preferably 20 or more.

[0050] Esters can be, for example, hexanoate, nonanoate, isononanoate, caprates, laurates, myristates, palmitates, stearates, isostearates, behenates and mixtures thereof.

[0051] Among the monoesters of monoacids and monoalcohols, ethylhexyl palmitate, isopropyl palmitate, isopropyl isostearate, alkyl myristates such as isopropyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate and isononyl isononanoate can be mentioned.

[0052] As examples of preferred fatty acid ester oils, mention may be made, for example, of isohexyl laurate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl isostearate and mixtures thereof.

[0053] The most preferred ester oils may be isopropyl isostearate.

[0054] Advantageously, fatty acid ester oil is present in the composition of the present invention in an amount ranging from 1% by weight to 20% by weight, preferably from 2% by weight to 15% by weight, more preferably from 2% by weight to 10% by weight, relative to the total weight of the composition. Cosmetic active ingredients

[0055] Optically, the composition of the present invention may comprise another cosmetic active ingredient for hair conditioning, for example, an oil-soluble plant extract. Petition 870250086812, dated 09 / 25 / 2025, p. 14 / 32 9 / 17

[0056] If present, advantageously, the cosmetic active ingredient is present in an amount ranging from 0.001% by weight to 5% by weight, preferably from 0.01% by weight to 2% by weight, and more preferably from 0.1% by weight to 1% by weight, relative to the total weight of the composition.

[0057] As examples of oil-soluble plant extracts, ceramide-type compounds can be mentioned.

[0058] As used in this invention, the term “ceramide-type compound” is understood to mean natural or synthetic ceramides and / or glycoceramides and / or pseudoceramides and / or neoceramides.

[0059] Ceramide-type compounds are disclosed, for example, in patent applications DE 4424530, DE 4424533, DE 4402929, DE 4420736, WO 95 / 23807, WO 94 / 07844, EP-A-0 646 572, WO 95 / 16665, FR-2 673 179, EP-A-0 227 994, WO 94 / 07844, WO 94 / 24097 and WO 94 / 10131, the teachings of which are included here by reference.

[0060] The ceramide-type compounds that can be used according to the present invention preferably correspond to the general formula (I): _R O| R—CN—CH-CH—O—R2 I! R4em que: - R1 means: - a saturated or unsaturated linear or branched C1-C50 hydrocarbon radical, preferably C5-C50, this radical may be substituted by one or more hydroxyl groups optionally esterified by an R7COOH acid, where R7 is a linear or branched C1C35 hydrocarbon radical, optionally mono- or polyhydroxylated, saturated or unsaturated, the hydroxyl or hydroxyl groups of the R7 radical being Petition 870250086812, dated 09 / 25 / 2025, page 15 / 32 10 / 17 rem esterified by a linear or branched C1-C35 fatty acid, optionally mono- or polyhydroxylated, saturated or unsaturated; - or a radical R''-(NR-CO)-R', where R means a hydrogen atom or a C1-C20 mono- or polyhydroxylated hydrocarbon radical, preferably monohydroxylated, R' and R'' are hydrocarbon radicals whose sum of carbon atoms is between 9 and 30, with R' being a divalent radical; - or an R8-O-CO-(CH2)p radical, where R8 stands for a C1-C20 hydrocarbon radical and p is an integer ranging from 1 to 12; - R2 is selected from a hydrogen atom, a saccharide-type radical, in particular a (glycosyl)n, (galactosyl)m or sulfogalactosyl radical, a sulfate or phosphate residue, a phosphorylethylamine radical and a phosphorylethylammonium radical, where n is an integer ranging from 1 to 4 and m is an integer ranging from 1 to 8; - R3 means a hydrogen atom or a C1-C33 hydrocarbon radical, hydroxylated or non-hydroxylated and saturated or unsaturated, it being possible that the hydroxyl or hydroxyl groups are esterified by an inorganic acid or an R7COOH acid, R7 having the same meanings as above, and it being possible that the hydroxyl or hydroxyl groups are etherified by a (glycosyl)n, (galactosyl)m, sulfogalactosyl, phosphorylethylamine or phosphorylethylammonium radical, it also being possible that R3 is substituted by one or more C1-C14 alkyl radicals; Preferably, R3 signifies a C15C26 α-hydroxyalkyl radical, with the hydroxyl group optionally esterified by a C16C30 α-hydroxy acid; - R4 means a hydrogen atom, a methyl or ethyl radical, an optionally hydroxylated, saturated or unsaturated, linear or branched C3-C50 hydrocarbon radical, or a -CH2-CHOHCH2-O-R6 radical, where R6 means a C10-C26 hydrocarbon radical, or Petition 870250086812, dated 09 / 25 / 2025, page 16 / 32 11 / 17 a radical Rs-O-CO-(CH2)p, where Rs stands for a C1-C20 hydrocarbon radical and p is an integer ranging from 1 to 12; - R5 means a hydrogen atom or a C1-C30 hydrocarbon radical, optionally mono- or polyhydroxylated, saturated or unsaturated, and linear or branched, with the hydroxyl group or groups possibly being etherified by a (glycosyl)n, (galactosyl)m, sulfogalactosyl, phosphorylethylamine, or phosphorylethylammonium radical; with the condition that, when R3 and R5 mean hydrogen or when R3 means hydrogen and R5 means methyl, then R4 does not mean a hydrogen atom or a methyl or ethyl radical.

[0061] Preference is given, among the compounds of formula (I), to ceramides and / or glycoceramides with the structure described by Downing in Journal of Lipid Research, Vol. 35, 2060-2068, 1994, or those disclosed in French Patent Application FR 2 673 179, the teachings of which are included herein by reference.

[0062] The ceramide-type compounds that are most particularly preferred according to the invention are the compounds of formula (I) for which R1 means an optionally hydroxylated and saturated or unsaturated alkyl derived from C14-C22 fatty acids; R2 means a hydrogen atom; and R3 means an optionally hydroxylated and linear C11-C17 radical and preferably a C13-C15 radical. R3 preferably means an α-hydroxyacetyl radical and R2, R4 and R5 mean a hydrogen atom.

[0063] Such compounds are, for example: - 2-N-linoleoylaminooctadecane-1,3-diol, - 2-N-oleoylaminooctadecane-1,3-diol (N-oleoyldihydrosphingo sina), - 2-N-palmitoylaminooctadecane-1,3-diol, - 2-N-stearoylaminooctadecane-1,3-diol, - 2-N-beenoylaminooctadecane-1,3-diol, Petition 870250086812, dated 09 / 25 / 2025, page 17 / 32 12 / 17 - 2-N-[2-hydroxypalmitoyl]aminooctadecane-1,3-diol, - 2-N-stearoylaminooctadecane-1,3,4-triol and, in particular, N-stearoylphytosphingosine, - 2-N-palmitoylaminohexadecane-1,3-diol, or mixtures of these compounds.

[0064] Specific mixtures may also be used, such as, for example, mixtures of ceramide(s) 2 and ceramide(s) 5, according to Downing's classification.

[0065] Compounds of formula (I) may also be used, for which R1 means a saturated or unsaturated alkyl radical derived from C12-C22 fatty acids; R2 means a galactosyl or sulfogalactosyl radical; and R3 means a saturated or unsaturated C12-C22 hydrocarbon radical and, preferably, a CH=CH-(CH2)12CH3 group.

[0066] One can mention, by way of example, the product composed of a mixture of glycoceramides, marketed under the trade name Glycocer by Waitaki International Biosciences.

[0067] Compounds of formula (I) disclosed in Patent Applications EP-A-0 227 994, EP-A-0 647 617, EP-A-0 736 522 and WO 94 / 07844 may also be used.

[0068] Such compounds are, for example, Questamide H (bis(N-hydroxyethyl-N-cetyl)malonamide), marketed by Quest, or N-(2-hydroxyethyl)-N-(3-cetyloxy-2-hydroxypropyl)amide of cetyl acid.

[0069] N-docosanoyl-N-methyl-D-glucamine, disclosed in Patent Application WO 94 / 24097, can also be used.

[0070] More preferably, the ceramide is selected from 2-oleamido-1,3-octadecanediol (its name CTFA), sold, for example, as MEXANYL GZ from Chimex, and ceramide NP (CTFA name Nestearoylphytosphingosine), sold, for example, as CERAMIDE III from EVONIK GOLDSCHMIDT. Petition 870250086812, dated 09 / 25 / 2025, p. 18 / 32 13 / 17

[0071] If present, advantageously, the ceramide-type compound is present in an amount ranging from 0.01% by weight to 2% by weight, preferably from 0.01% by weight to 1% by weight, more preferably from 0.05% by weight to 0.5% by weight, relative to the total weight of the composition. Adjuvants

[0072] The composition according to the present invention may also comprise an effective amount of other ingredients, such as fragrances, preservatives, etc.

[0073] A person skilled in the art may select the amount of additional adjuvants so as not to impair the end use of the composition according to the present invention.

[0074] According to a preferred embodiment, the present invention provides a hair conditioning composition comprising, in relation to the total weight of the composition: a) from 2% by weight to 10% by weight of oleyl alcohol; b) from 20% by weight to 80% by weight of at least one volatile alkane selected from linear C7-C14 alkanes, branched Cs-Cw alkanes and mixtures thereof; and c) from 2% by weight to 10% by weight of at least one fatty acid ester oil selected from isohexyl laurate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl isostearate and mixtures thereof; and d) optionally, from 0.05% by weight to 0.5% by weight of at least one ceramide-type compound, wherein the composition does not contain silicone. Preparation and use

[0075] The composition according to the present invention can be prepared by mixing the ingredients of a) ac), as essential ingredients, as well as additional ingredient(s), as Petition 870250086812, dated 09 / 25 / 2025, p. 19 / 32 14 / 17 explained above.

[0076] The method and means for mixing the above essential and optional ingredients are not limited. Any conventional method and means may be used to mix the above essential and optional ingredients to prepare the composition according to the present invention.

[0077] Although the composition according to the present invention does not contain silicone, it can provide a similar or better wet / dry cosmetic / conditioning effect compared to silicone-based oil.

[0078] The composition according to the present invention can be used as a leave-in conditioning product for hair care.

[0079] According to the second aspect, the present invention provides a process for conditioning hair, comprising applying the composition as described above. EXAMPLES

[0080] The following examples are provided by way of illustration of the present invention and should not be construed as limiting the scope.

[0081] The main raw materials used, their trade names and suppliers are listed in Table 1. Table 1 INCI Name Trade Name Supplier Undecane (and) tridecane CETIOL® ULTIMATE BASF Isohexadecane ISOHEXADECANE INEOS Oleyl alcohol HD OCENOL 80 / 85 V / MB BASF Isopropyl isostearate Radia 7739 OLEON Cyclopentasiloxane DOWSIL SH 245 FLUID DOW Examples of the Invention 1 to 4 and Comparative Examples 1 to 3

[0082] Leave-in hair oils according to Petition 870250086812, dated 09 / 25 / 2025, page 20 / 32 15 / 17 invention examples (IE.) 1 to 4 and comparative examples (CE.) 1 to 3 were prepared with the ingredients listed in Table 2 (the contents are expressed as weight percentages of the ingredients in relation to the total weight of each leave-in hair oil, unless otherwise indicated). Table 2 Ingredients IE.1 IE.2 IE.3 IE.4 CE.1 CE.2 CE.3 % by weight % by weight % by weight % by weight % by weight % by weight Undecane (and) Tridecane QS100 QS100 QS100 QS100 QS100 QS100 QS100 Isohexadecane 0 10 5 5 0 10 5 2-oleamido-1,3octadecanediol 0 0 0 0.1 0 0 0 Oleyl alcohol 7 5 10 10 7 5 0 Isopropyl isostearate 7 10 5 5 0 0 5 Cyclopentasiloxane 0 0 0 0 7 10 0

[0083] Leave-in hair oils of examples 1 to 4 of the invention are compositions according to the present invention.

[0084] The leave-in hair oils in comparative examples 1 and 2 contain cyclopentasiloxane instead of a fatty acid ester oil.

[0085] The leave-in hair oils of comparative example 3 do not contain an unsaturated fatty alcohol comprising a C12-C20 carbon chain. Preparation procedure

[0086] Each leave-in hair oil was prepared by mixing all the ingredients with careful stirring until a homogeneous composition was obtained. Assessment Petition 870250086812, dated 09 / 25 / 2025, page 21 / 32 16 / 17

[0087] The leave-in hair oils prepared above were evaluated in terms of stability, conditioning effect and lightweight feel. Stability

[0088] The stability of the leave-in hair oils obtained above was evaluated as follows: A sample of the leave-in hair oil to be evaluated was placed in a glass bottle, and then the bottle was placed in an oven at 50°C for 2 weeks. Afterwards, the leave-in hair oil was removed from the oven and cooled to room temperature. If the leave-in hair oil still maintains a transparent appearance and there is no separation, the leave-in hair oil is classified as OK; otherwise, the leave-in hair oil is classified as NOT OK. Conditioning effect and a feeling of lightness.

[0089] Hair samples were washed with a silicone-free shampoo (0.4 g / per gram of hair sample) and towel-dried until no more water dripped.

[0090] Next, 0.1 to 0.12 g of each leave-in hair oil obtained above was applied to a 6 g hair sample evenly from the mid-lengths to the ends, respectively, and then blow-dried.

[0091] Next, the conditioning effect provided by each leave-in hair oil was evaluated according to the following standard by a hair conditioning expert.

[0092] Conditioning effect: define CE1 as reference, compare each example with CE1, + means better than CE1, - means less than CE1, = means similar to CE1.

[0093] Sensation of lightness: define CE1 as reference and compare each example with CE1. “+” means better lightness / less sensation. Petition 870250086812, dated 09 / 25 / 2025, page 22 / 32 17 / 17 residue, “-” means less lightness / more residue sensation.

[0094] The results for stability, conditioning effect and lightness sensation were summarized in Table 3. Table 3 Properties IE.1 IE.2 IE.3 IE.4 CE.1 CE.2 CE.3 Conditioning effect + + + + / = = Feeling of lightness = = = = / = = Stability OK OK OK OK OK OK OK OK

[0095] From Table 3, it can be seen that the leave-in hair oils of invention examples 1 to 4 can provide a good conditioning effect and a feeling of lightness, in addition to being stable.

Claims

1. Hair conditioning oil composition, characterized in that it comprises: a) at least one unsaturated fatty alcohol comprising a C12-C20 carbon chain; b) at least one volatile alkane; and c) at least one fatty acid ester oil, wherein the composition does not contain silicone.

2. Composition according to claim 1, characterized in that the unsaturated fatty alcohol is selected from an unsaturated fatty monoalcohol comprising a C12-C20 carbon chain, preferably from a linear unsaturated fatty monoalcohol comprising a C14-C20 carbon chain, more preferably, the unsaturated fatty alcohol is an oleyl alcohol.

3. Composition according to claim 1 or 2, characterized in that the unsaturated fatty alcohol is present in an amount ranging from 1% by weight to 20% by weight, preferably from 1.5% by weight to 15% by weight, more preferably from 2% by weight to 10% by weight, relative to the total weight of the composition.

4. Composition according to any one of claims 1 to 3, characterized in that the volatile alkane is selected from linear C7-C14 alkanes, branched C8-C16 alkanes and mixtures thereof.

5. Composition according to any one of claims 1 to 4, characterized in that the volatile alkane is present in an amount ranging from 1% by weight to 90% by weight, preferably from 10% by weight to 80% by weight, more preferably from 20% by weight to 80% by weight, relative to the total weight of the composition.

6. Composition according to any one of claims 1 to 5, characterized in that the fatty acid ester oil is selected from liquid monoesters of branched, saturated or unsaturated C3-C22 aliphatic monoacids and branched, saturated or unsaturated C2-C20 aliphatic monoalcohols, preferably the fatty acid ester oil is selected from liquid monoesters of branched saturated C6-C20 aliphatic monoacids and branched saturated C2-C6 aliphatic monoalcohols.

7. Composition according to any one of claims 1 to 6, characterized in that the fatty acid ester oil is selected from esters having the following formula: Ri-C(=O)-O-R2 wherein Ri represents a branched alkyl radical of 3 to 22 carbon atoms, preferably of 6 to 20 carbon atoms, and R2 represents a branched alkyl radical of 3 to 20 carbon atoms, preferably of 2 to 6 carbon atoms, preferably the total number of carbon atoms of Ri + R2 can be 9 or more, preferably 12 or more, more preferably 16 or more and most preferably 20 or more.

8. Composition according to any one of claims 1 to 7, characterized in that the fatty acid ester oil is selected from isohexyl laurate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl isostearate and mixtures thereof, preferably the fatty acid ester oil is isopropyl isostearate.

9. Composition according to any one of claims 1 to 8, characterized in that the fatty acid ester oil is present in an amount ranging from 1% by weight to 20% by weight, preferably from 2% by weight to 15% by weight, more preferably from 2% by weight to 10% by weight, relative to the total weight of the composition.

10. Composition according to any of claims 1 to 9, characterized in that the composition further comprises an oil-soluble plant extract.

11. Composition according to claim 10, characterized in that the oil-soluble plant extract is a ceramide-type compound.

12. Composition according to claim 11, characterized in that the ceramide-type compound is present in an amount ranging from 0.01% by weight to 2% by weight, preferably from 0.01% by weight to 1% by weight, more preferably from 0.05% by weight to 0.5% by weight, relative to the total weight of the composition.

13. Composition according to claim 1, characterized in that it comprises, with respect to the total weight of the composition: a) from 2% by weight to 10% by weight of oleyl alcohol; b) from 20% by weight to 80% by weight of at least one volatile alkane selected from linear C7-C14 alkanes, branched C8-C16 alkanes and mixtures thereof; c) from 2% by weight to 10% by weight of at least one fatty acid ester oil selected from isohexyl laurate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl isostearate and mixtures thereof; d) optionally, from 0.05% by weight to 0.5% by weight of at least one ceramide-type compound, wherein the composition does not contain silicone.

14. Composition according to any one of claims 1 to 10, characterized in that it is a no-rinse product.

15. A process for conditioning hair, characterized in that it comprises applying a composition as defined in any one of claims 1 to 14 to the hair.