Ethanol-free emulsion comprising two alkanediols, a surfactant, a fragrance, and a large amount of water; fragrancing process using this emulsion

Abstract

The present invention relates to a composition with little or no C1-C5 alkanol, notably ethanol, in the form of a fragrancing (micro)emulsion comprising at least two different C3-C5 alkandiols: i) pentylene glycol and ii) propylene glycol, iii) at least one surfactant, iv) at least one oil, v) at least one fragrancing substance and vi) at least 30% by weight of water, relative to the total weight of said composition, it being understood that the i) / ii) weight ratio is less than 1. The present invention also relates to a process for fragrancing human keratin materials or clothing, which consists in applying a fragrancing composition as defined above to said keratin materials or said clothing.

Description

ETHANOL-FREE EMULSION COMPRISING TWO ALKANEDIOLS, A SURFACTANT, A FRAGRANCE, AND A LARGE AMOUNT OF WATER; FRAGRANCING PROCESS USING THIS EMULSION

[0001] The present invention relates to a composition with little or no C1-C5alkanol, notably ethanol, in the form of a fragrancing (micro)emulsion comprising at least two different C3-C5alkandiols: i) pentylene glycol and ii) propylene glycol, iii) at least one surfactant, iv) at least one oil, v) at least one fragrancing substance and vi) at least 30% by weight of water, relative to the total weight of said composition, it being understood that the i) / ii) weight ratio is strictly less than 1, or preferably that the i) / ii) weight ratio is less than or equal to 0.8, optionally the ii) / iii) weight ratio is greater than or equal to 1, and if the fragrancing substance(s) is (are) also in the form of liquid fatty substance(s) (i.e. oil(s)), then the non-fragranced oil iv) may be absent.Prior art

[0002] The present invention also relates to a process for fragrancing human keratin materials or clothing, which consists in applying a fragrancing composition comprising the ingredients i) to vi) as defined above and below to said keratin materials or said clothing. More particularly, it is a process for fragrancing keratin materials or clothing, preferably for fragrancing keratin materials, by applying one or more fragrancing compositions comprising the ingredients i) to vi) as defined above to said keratin materials or said clothing.

[0003] Another subject is the use of the fragrancing composition comprising the ingredients i) to vi) as defined above and below for fragrancing human keratin materials or clothing which consists in applying a fragrancing composition comprising the ingredients i) to vi) as defined above and below to said keratin materials or said clothing.

[0004] It is known that a fragrance is the combination of different odorous substances that evaporate at different periods. Each fragrance exhibits what is known as a “top note”, which is the odor which diffuses first during the application of the fragrance or when the receptacle containing it is opened, a “middle or heart note”, which corresponds to the full fragrance (given off for a few hours after the “top note”), and a “base note”, which is the most persistent odor (given off for several hours after the “middle note”). The persistence of the base note corresponds to the durability of the fragrance.

[0005] Human beings have always sought to fragrance themselves and to fragrance the objects surrounding them or their environments, both to mask strong and / or unpleasant odors and to give a nice odor.

[0006] It is common practice to incorporate fragrance into a certain number of products or compositions, in particular cosmetic and dermatological compositions such as eaux fraîches, eaux de toilette, eaux de parfum, fragrance elixirs or extracts, aftershave lotions, care fluids and two-phase lotions.

[0007] Most fragrancing formulations are composed mainly of water, C1-C5alkanol, notably ethanol, and fragrance(s). However, consumers of fragrancing products are increasingly demanding formulations with little or no C1-C5alkanol, notably with little or no ethanol.

[0008] C1-C5alkanols, which are generally volatile, are good solubilizers of fragrancing ingredients, and also have the advantage of being inexpensive and of allowing the formulation of transparent compositions. However, they have the drawback of impairing the olfactory characteristics of the fragrancing ingredients, on account not only of their powerful odor but also of their ability to react, in the presence of water, with the fragrancing ingredients and thus to modify the odor and / or color thereof. Finally, they have an irritant potential and have a tendency to dry out the skin. They may be a cause of stinging when they are applied to sensitive or damaged skin, especially after shaving.

[0009] Several attempts have therefore been made to replace the ethanol in fragrance compositions with other solvents which do not have the above drawbacks.

[0010] A first route consisted in replacing C1-C5alkanols and notably ethanol with aqueous compositions containing hydrophilic solubilizers such as polyethoxylated hydrogenated castor oils. The compositions obtained contain large percentages of these solubilizers which can be irritating, foaming and have a tacky effect on the skin. Another route consisted in formulating fragrance compositions in the form of microemulsions and nanoemulsions. However, the oily phase of these emulsions, containing the fragrancing ingredients, is limited in terms of quantity so as not to destabilize the emulsion, which reduces the fragrancing effect of these compositions.

[0011] Aqueous presentation forms, from which the C1-C5monoalcohols have been removed, often present problems of solubilization of the fragrance and / or of olfactory and / or color stability, or develop microorganisms requiring the use of preservatives. Furthermore, the use of solubilizers to help solubilize the fragrance in water very often makes the application to the skin tacky.

[0012] Fragranced microemulsions with little or no ethanol are known. For example, US 2011 / 0177995 (Takasago Int. Co.) describes microemulsions which comprise a particular amount of fragrance, two nonionic surfactants comprising from 4 to 20 and from 4 to 12 carbon atoms, a particular amount of (C4-C8)alkanediol and at least 50% by weight of water. Patent applications US 2018 / 0258370 and WO 2014 / 090959 relate to ethanol-free fragranced microemulsions comprising at least one preservative, at least one surfactant system, a fragranced oil and water. Patent application WO 2023 / 081742 also describes ethanol-free fragranced microemulsions comprising a surfactant and water in an amount of greater than 30%, propylene glycol and pentylene glycol. These documents notably do not describe any particular ratio of pentylene glycol being lower than propylene glycol.

[0013] Yet it has been found that when an equivalent amount of pentylene glycol and propylene glycol is used, the composition is not always satisfactory, notably in terms of composition transparency, odor and tackiness after application to keratin materials, in particular the skin. Specifically, a lactescent haze of the composition and / or a lack of stability of the formulation over time may be observed visually. The penetration time of prior art formulations on keratin materials may be long. The odor may also be less similar to the starting fragrancing raw material. It is also regrettable that a feeling of tackiness after application to the keratin materials is very present, even after one or several minutes. There is therefore a need to provide transparent aqueous fragrancing formulations with little or no C1-C5alkanol which, after application, deliver an odor similar to the starting raw material, which penetrates easily into keratin materials, notably the skin, and which is less tacky after application and drying.

[0014] The applicant has surprisingly discovered that this objective could be achieved with a composition, preferably a cosmetic composition, in the form of a (micro)emulsion, which is preferably transparent, comprising:pentylene glycol;propylene glycol;one or more surfactants;one or more fatty substances which are liquid at 25°C and atmospheric pressure (or oil(s));one or more fragrancing substances; andat least 30% by weight of water relative to the total weight of said composition;

[0015] it being understood that:the weight content of C1-C5alkanol is less than or equal to 3%, particularly less than or equal to 2%, more particularly less than or equal to 1%, preferentially less than or equal to 0.5%, more preferentially less than or equal to 0.1%, relative to the total weight of the composition, or better still free of C1-C5alkanol;the weight ratio i) / ii) is less than 1, preferably the weight ratio i) / ii) is less than or equal to 0.8, preferably less than or equal to 0.5; preferably, the weight ratio of ii) / iii) is greater than or equal to 1, more preferentially between 1.0 and 1.5 inclusive, even more preferentially between 1.01 and 1.20, better still between 1.05 and 1.10; andif the fragrancing substance(s) is (are) in the form of oil then iv) may be absent.

[0016] The present invention also relates to a process for fragrancing human keratin materials or clothing, which consists in applying the fragrancing composition as defined above to said keratin materials or said clothing.

[0017] Unless otherwise mentioned in the following, the following definitions apply:

[0018] A “fragrancingsubstance” is understood to mean any fragrance or aroma capable of giving off a pleasant odor.

[0019] According to the invention, “keratin materials” are understood to denote the skin of the body, the nails, body hair, the scalp and / or head hair, or any other cutaneous area of the body. More particularly, the keratin materials according to the invention are the scalp, head hair and / or the skin.

[0020] The “skin” is understood to mean all of the skin of the body, and preferably the skin of the upper chest, neck, arms and forearms.

[0021] All the compositions according to the present invention are cosmetic compositions. For the purposes of the present invention, the term “cosmetic” is understood to denote a composition compatible with the skin, mucous membranes and skin appendages.

[0022] A “cosmetically acceptable medium” is understood to mean a non-toxic medium that can be applied to the skin (including the inside of the eyelids), the lips, the nails, the eyelashes, the eyebrows, the scalp, head hair and mucous membranes.

[0023] A “C1-C5alkanol” is understood to mean any compound having a saturated, linear or branched alkyl chain of 1 to 5 carbon atoms comprising only one hydroxyl function (OH) and notably chosen from methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol and t-butanol, preferably methanol and ethanol.

[0024] A “(micro)emulsion” is understood to mean an emulsion or a microemulsion, preferably a microemulsion, of O / W (oil-in-water) type, of W / O (water-in-oil) type, or of O / W / O (oil-in-water-in-oil) type, preferably of O / W type.

[0025] A “microemulsion” is understood to mean a thermodynamically stable emulsion for which the (mean) diameter of the particles (or micelles) is less than or equal to 300 nm, preferably less than or equal to 200 nm, particularly between 1 nm and 300 nm, more particularly between 10 nm and 250 nm, better still between 50 nm and 200 nm, even better still between 100 nm and 150 nm.

[0026] For the purposes of the present invention, the term “clear” means that the composition allows light to pass through and objects that are located behind it are seen in sharp definition. In particular, it is transparent.

[0027] The term “transparent” is understood to mean that the composition can be characterized using a conventional commercial test tube made of transparent, untinted borosilicate or soda-lime glass or neutral glass, for instance made of Pyrex®or Duran®glass, 16 cm tall and 1.6 cm in diameter, which is filled up to 14 cm of said tube (the bottom of the meniscus of the composition in the tube is 14 cm from the bottom of the tube). A page of published international patent application (in A4 format) is placed behind at a distance of 1 cm; and by placing one's eyes at a distance (reading focal length in relation to the test tube) of between 20 cm and 40 cm, such as 30 cm, and perpendicular to the middle of the composition in said tube (about 7 cm from the bottom of said tube), an assessment is made as to whether said page of the published international patent application, notably the first page, can be read clearly through the composition in said tube. It is understood that the tester has good vision, or that they are equipped with spectacles, contact lenses or any other optical devices that they normally wear for reading. It is possible, for example, to use patent application WO 2018 / 104428 and to assess the sharpness, i.e. the ability to read the 31 lines of page 13, in order to perform the test or, better still, to perform the reading test on the first page.

[0028] The transparency of the composition may also be characterized by measuring its transmittance. In the context of the present invention, the transmittance measurements are taken at 25°C and at atmospheric pressure (1 atm) with a Cary 100 Scan UV-visible spectrophotometer.

[0029] A composition according to the invention is generally suitable for application to keratin materials, in particular topical application to the skin, and thus generally comprises a physiologically acceptable medium, that is to say a medium compatible with the skin and keratin fibers such as the hair.

[0030] It is preferably a cosmetically acceptable medium, that is to say which has a pleasant color, odor and feel after application to keratin materials, notably human keratin materials, particularly the skin, or keratin fibers such as the hair.

[0031] A “(Cx-Cz)alkyl” or else “Cx-Czalkyl” group represents a linear or branched hydrocarbon chain comprising from x to z carbon atoms. For example, a (C1-C6)alkyl group represents a linear or branched hydrocarbon chain comprising from 1 to 6 carbon atoms.

[0032] A “(Cx-Cz)alkylene” or else “Cx-Czalkylene” group is a divalent group derived from a (Cx-Cz)alkyl group.

[0033] The term “at least one” is equivalent to “one or more”.

[0034] The terms “between... and...”, “comprises from ... to...”, “formed from ... to...” and “ranging from... to...” should be understood as including the limits, unless otherwise specified.

[0035] Other characteristics, variants and advantages of the compositions according to the invention will emerge more clearly on reading the description and the examples that follow.The composition

[0036] The composition according to the invention is in the form of an emulsion.

[0037] The composition preferably comprises less than 3% by weight of C1-C5alkanol (notably ethanol)relative to the total weight of the composition, in particular less than 2% by weight of C1-C5alkanol (notably ethanol), more particularly less than 1% by weight of C1-C5alkanol (notably ethanol), even more particularly less than 0.5% by weight of C1-C5alkanol (notably ethanol) and preferentially less than 0.1% by weight of C1-C5alkanol (notably ethanol), and more preferentially, the composition of the invention is free of C1-C5alkanol (notably ethanol).

[0038] According to a particular embodiment, the composition of the invention is either in the form of a direct emulsion, i.e., of the oil-in-water (O / W) type, or in the form of an inverse emulsion, i.e., of the water-in-oil (W / O) type, or in the form of an oil-in-water-in-oil (O / W / O) multiple emulsion.

[0039] According to a preferred embodiment of the present invention, the composition is in a direct microemulsion, i.e., of the oil-in-water (O / W) type.

[0040] According to another embodiment of the invention, the composition is in an inverse microemulsion, i.e., of the water-in-oil (W / O) type.

[0041] According to another embodiment of the invention, the composition of the invention is in the form of an oil-in-water-in-oil (O / W / O) multiple microemulsion.

[0042] Preferably, the composition of the invention is in the form of an O / W oil-in-water microemulsion.

[0043] Particularly, the (micro)emulsion contains particles (or micelles) with a (mean) diameter of less than or equal to 300 nm, preferably less than or equal to 200 nm, particularly between 1 nm and 300 nm, more particularly between 10 nm and 250 nm, better still between 50 nm and 200 nm, even better still between 100 nm and 150 nm.

[0044] According to one embodiment, the composition according to the invention is a micellar water.

[0045] According to a preferred embodiment of the invention, the composition is clear, preferably transparent.

[0046] The composition also comprises i) pentylene glycol and ii) propylene glycol with a pentylene glycol i) / propylene glycol ii) weight ratio of strictly less than 1, even better the i) / ii) weight ratio is less than or equal to 0.8, preferably less than or equal to 0.5, more preferentially less than or equal to 0.45.

[0047] According to one particular embodiment, the i) / ii) weight ratio is between 0.1 and 0.5, preferentially between 0.2 and 0.45, more preferentially between 0.3 and 0.4, such as 0.4 ± 0.05.

[0048] Particularly, the composition also comprises ii) propylene glycol and iii) one or more surfactants with a propylene glycol ii) / surfactant(s) iii) weight ratio of greater than or equal to 1, preferably between 1.0 and 1.5 inclusive, more preferentially between 1.01 and 1.20, even more preferentially between 1.05 and 1.10.

[0049] Preferably, the amount of i) pentylene glycol is less than 15% by weight relative to the weight of the composition, preferably less than or equal to 10% by weight, more particularly between 5% and 9% by weight, such as 7.5% ± 0.5%.

[0050] Preferably, the amount of ii) propylene glycol is greater than or equal to 10% by weight relative to the weight of the composition, preferably greater than or equal to 15% by weight, more particularly between 15% and 30% by weight, such as 19.5 ± 1%.

[0051] The composition also comprises iii) one or more surfactants, preferably nonionic surfactants.

[0052] The surfactant(s) may be nonionic, anionic, cationic, zwitterionic or amphoteric, preferably the surfactant(s) is (are) nonionic.

[0053] Among the nonionic surfactants according to the invention, mention may be made, alone or as mixtures, of a) fatty alcohols, b) alpha-diols, c) alkylphenols; these 3 types of compounds a) to c) being polyethoxylated, polypropoxylated and / or polyglycerolated, and having a fatty chain comprising, for example, 8 to 30 carbon atoms, in particular comprising 10 to 22 carbon atoms, it being possible for the number of ethylene oxide or propylene oxide groups to range notably from 2 to 200, in particular from 10 to 100 and for the number of glycerol groups to range notably from 2 to 200, in particular from 10 to 100. Mention may also be made of copolymers of ethylene oxide (EO) and propylene oxide (PO), condensates of ethylene oxide and of propylene oxide with fatty alcohols; polyethoxylated fatty amides preferably containing from 2 to 30 mol of EO, polyglycerolated fatty amides including on average 1 to 5, and in particular 1.5 to 4, glycerol groups; oxyethylenated fatty acid esters of sorbitan containing from 2 to 200 mol of EO, in particular from 3 to 100 EO; fatty acid esters of sucrose; fatty acid esters of polyethylene glycol, alkylpolyglycosides, N-alkylglucamine derivatives, amine oxides such as (C10-C14) alkylamine oxides or N-acylaminopropylmorpholine oxides.

[0054] Preferably, the surfactant(s) is (are) nonionic and is (are) chosen from: (poly)ethoxylated fatty alcohols; glycerolated fatty alcohols; alkylpolyglycosides; preferably, oxyethylenated fatty acid monoesters and diesters of sorbitan containing from 2 to 200 mol of EO, in particular from 3 to 100 EO.

[0055] More preferentially, the surfactants are chosen from a) oxyethylenated fatty acid monoesters and diesters of sorbitan containing from 2 to 100 mol of EO, in particular from 3 to 50 EO, such as propylene glycol stearate containing from 10 to 30 EO, such as 20 EO; b) glyceryl monostearate-distearate / polyethylene glycol stearate (100 EO), preferably glyceryl monoesters of C6-C30fatty acid.

[0056] Preferably, the composition of the invention comprises only one type of surfactant iii), which is preferably nonionic.

[0057] Preferably, the surfactant(s) iii) is (are) chosen from b) and in particular of formula:Ra-C(O)-O-[CH2-CH(OH)-CH2-O]p-H (I)

[0058] in which formula(I):Rarepresents a linear or branched, preferably linear, saturated or unsaturated, preferably saturated, hydrocarbon chain, comprising from 7 to 24 carbon atoms, more particularly 8 to 18 carbon atoms, more preferentially between 9 and 12 carbon atoms; andp represents an integer between 2 and 10 inclusive, preferably between 3 and 6, such as 4.

[0059] Particularly, the surfactant(s) iii) is (are) of formula (I) and more particularly chosen from polyglyceryl 2 to 10 esters of fatty acids, preferably C8-C24fatty acids, such as polyglyceryl-10 stearate, polyglyceryl-2 isostearate, polyglyceryl-10 myristate, and polyglyceryl-4 caprate, more preferentially polyglyceryl-4 caprate.

[0060] Preferably, the composition comprises only a single surfactant which is of formula(I)as defined above, more particularly polyglyceryl-4 caprate.

[0061] With regard to alkylpolyglycosides, these compounds are well known and can be more particularly represented by the following general formula(II):R1O-(R2O)t (G)v (II)

[0062] in which formula(II):

[0063] -R1represents a linear or branched, saturated or unsaturated, preferably saturated, hydrocarbon chain comprising from about 8 to 24 carbon atoms, or an alkylphenyl radical in which the linear or branched alkyl radical comprises from 8 to 24 carbon atoms;

[0064] -R2represents an alkylene radical comprising from about 2 to 4 carbon atoms;

[0065] -Grepresents a sugar unit comprising from 5 to 6 carbon atoms;

[0066] -tdenotes an integer between 0 and 10 inclusive, preferably between 0 and 4, preferably between 0 and 4; and

[0067] -vdenotes an integer between 1 and 15 inclusive.

[0068] Preferred alkylpolyglycosides according to the present invention are compounds of formula(II)whereinR1more particularly denotes a linear or branched, saturated or unsaturated alkyl radical comprising from 8 to 18 carbon atoms, t denotes a value ranging from 0 to 3 and even more particularly equal to 0, and G may denote glucose, fructose or galactose, preferably glucose. The degree of polymerization, i.e., the value of v in the formula (II), can range from 1 to 15, preferably from 1 to 4. The average degree of polymerization is more particularly between 1 and 2 and even more preferentially from 1.1 to 1.5.

[0069] The glycoside bonds between the sugar units are of 1-6 or 1-4 type and preferably of 1-4 type.

[0070] Compounds of formula(II)are especially represented by the products sold by the company Cognis under the names Plantaren® (600 CS / U, 1200 and 2000) or Plantacare® (818, 1200 and 2000). It is also possible to use the products sold by the company SEPPIC under the names Triton CG 110 (or Oramix CG 110) and Triton CG 312 (or Oramix® NS 10), the products sold by the company BASF under the name Lutensol GD 70 or else those sold by the company Chem Y under the name AG10 LK.

[0071] It is also possible to use, for example, the C8 / C16alkyl 1,4-polyglucoside as an aqueous 53% solution sold by Cognis under the reference Plantacare® 818 UP.

[0072] As regards the mono- or polyglycerolated surfactants, they preferably include on average from 1 to 40 glycerol groups, more particularly from 10 to 30 glycerol groups, such as 20.

[0073] According to a particular embodiment of the invention, the surfactants are monoglycerolated or polyglycerolated and are preferably chosen from compounds of the following formulae(IIIa)to(IIIc):R3O[CH2CH(CH2OH)O]mH (IIIa),

[0074] R3O[CH2CH(OH)CH2O]mH (IIIb)orR3O[CH(CH2OH)CH2O]mH (IIIc);

[0075] in which formulae(IIIa)to(IIIc):

[0076] - R3represents a linear or branched, saturated or unsaturated hydrocarbon chain comprising from 8 to 40 carbon atoms and preferably from 10 to 30 carbon atoms;

[0077] -mis a number between 1 and 30, preferably between 1 and 10, more particularly from 1.5 to 6;

[0078] it being understood thatR3may be substituted, and / or interrupted by one or more heteroatoms such as O, N, or groups chosen from hydroxyl, amide and ester.

[0079] R3preferably represents an optionally mono- or polyhydroxylated C10-C20alkyl and / or alkenyl group; more particularly R3represents a C10-C24alkyl group such as myristyl, or lauryl.

[0080] Preferably, the composition of the invention comprises one or more (poly)ethoxylated fatty alcohols which are suitable for implementing the invention and are more particularly chosen from alcohols comprising from 8 to 30 carbon atoms, and preferably from 12 to 22 carbon atoms.

[0081] The (poly)ethoxylated fatty alcohols more particularly contain one or more linear or branched, saturated or unsaturated hydrocarbon groups comprising 8 to 30 carbon atoms, which are optionally substituted, in particular with one or more (in particular 1 to 4) hydroxyl groups. If they are unsaturated, these compounds may comprise one to three conjugated or non-conjugated carbon-carbon double bonds.

[0082] The (poly)ethoxylated fatty alcohol(s) preferably have the following formula:Ra-[O-CH2-CH2]n-OH (IV)

[0083] Formula(IV)with

[0084] -Rarepresenting a linear or branched C1-C40alkyl or linear or branched C2-C30alkenyl (preferentially C8-C30alkyl) group; and

[0085] -nrepresenting an integer between 1 and 200 inclusive, preferentially between 2 and 100, more particularly between 10 and 50 inclusive, even more particularly between 15 and 30 inclusive, such as 100 or 20.

[0086] The (poly)ethoxylated fatty alcohols are more particularly fatty alcohols comprising from 8 to 24 carbon atoms and oxyethylenated with 1 to 30 mol of ethylene oxide (1 to 100 EO). Among them, mention may be made more particularly of 20 EO lauryl alcohol, 30 EO lauryl alcohol, 3 EO decyl alcohol, 5 EO decyl alcohol and 20 EO oleyl alcohol.

[0087] Mixtures of these (poly)oxyethylenated fatty alcohols may also be used.

[0088] Among the surfactants iii), use is preferably made of the surfactant(s) iii) chosen from b) and in particular of formula (I) as defined above;

[0089] particularly chosen from polyglyceryl 2 to 10 esters of fatty acids, preferably C8-C24fatty acids, such as polyglyceryl-10 stearate, polyglyceryl-2 isostearate, polyglyceryl-10 myristate, and polyglyceryl-4 caprate, more preferentially polyglyceryl-4 caprate.

[0090] The amount of surfactants iii) ranges preferably from 0.5% to 40% by weight, in particular from 1% to 30% by weight, and more particularly from 5% to 25% by weight, better still between 10% and 20% relative to the total weight of the composition of the invention.

[0091] Particularly, the pentylene glycol i) / surfactant(s) iii) weight ratio is strictly less than 1, more particularly less than or equal to 0.5, and preferentially less than or equal to 0.45.

[0092] More particularly, the pentylene glycol i) / surfactant(s) iii) weight ratio is greater than or equal to 0.2, and more preferentially greater than 0.2. Preferably, the pentylene glycol i) / surfactant(s) iii) weight ratio is between 0.21 and 0.43.

[0093] The composition of the invention also contains one or more fatty substances which are liquid at ordinary temperature (25°C) and at atmospheric pressure (760 mmHg; i.e. 1.013 × 105Pa), also referred to as oil. Preferably, the oil is a fragranced oil.

[0094] According to one embodiment, the oil(s) is (are) optionally combined with one or more non-liquid fatty substances.

[0095] Preferably, the liquid fatty substance(s) iv) is (are) chosen from the following oils: monoesters of monoacids and monoalcohols, more particularly from ethyl and isopropyl palmitates, alkyl myristates such as isopropyl or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isononyl isononanoate, cetearyl isononanoate, isodecyl neopentanoate, isostearyl neopentanoate, and C10-C22alkyl (iso)stearates, preferably C12-C20alkyl (iso)stearates, such as isopropyl isostearate, isononyl isononanoate and cetearyl isononanoate, more preferentially chosen from isononyl isononanoate, cetearyl isononanoate, and a mixture thereof.

[0096] According to a particular embodiment, the fatty substance(s) iv) included in the composition according to the present invention is (are) present in the composition in an amount varying from 0.01% to 20% by weight, more particularly in an amount varying from 0.05% to 10% by weight, and preferentially in an amount varying from 0.1% to 5%.

[0097] The composition further comprises v) one or more fragrancing substances.

[0098] In particular, the composition according to the invention comprises at least 0.01% by weight of fragrancing substance(s), more particularly at least 0.1% by weight, preferentially at least 0.5% by weight, more preferentially at least 1% by weight, relative to the total weight of the composition.

[0099] According to a particular embodiment of the invention, the composition according to the invention comprises less than 10% by weight, in particular less than 7% by weight, more particularly less than 5% by weight, or is free of fragrancing substance(s), relative to the total weight of the composition.

[0100] Fragrancing substances are compositions containing in particular the starting materials described in S. Arctander,Perfume andFlavorChemicals(Montclair, N.J., 1969), in S. Arctander,Perfume andFlavorMaterials of Natural Origin(Elizabeth, N.J., 1960), and inFlavorand Fragrance Materials – 1991, Allured Publishing Co., Wheaton, Ill.

[0101] The composition according to the invention notably comprises at least one fragrancing substance chosen from essential oils, fragrances and aromas of synthetic or natural origin, and mixtures thereof.

[0102] They may be natural products, such as essential oils, absolutes, resinoids, resins, concretes, and / or synthetic products, such as terpene or sesquiterpene hydrocarbons, alcohols, phenols, aldehydes, ketones, ethers, acids, esters, nitriles or peroxides, which may be saturated or unsaturated, and aliphatic or cyclic.

[0103] According to the definition given in the international standard ISO 9235 and adopted by the European Pharmacopoeia Commission, an essential oil is an odorous product, usually of complex composition, obtained from a botanically defined plant raw material either by steam distillation or dry distillation, or by a suitable mechanical process without heating (cold pressing). The essential oil is usually separated from the aqueous phase via a physical process that does not result in any significant change in the composition.

[0104] The choice of the method for obtaining essential oils depends mainly on the raw material: its original state and its characteristics, its intrinsic nature. The “essential oil / plant raw material” yield may be extremely variable depending on the plants: 15 ppm to more than 20%. This choice determines the characteristics of the essential oil, in particular viscosity, color, solubility, volatility, and enrichment or depletion in certain constituents.

[0105] Steam distillation corresponds to vaporization, in the presence of steam, of a substance with low water miscibility. The raw material is placed in contact with boiling water or steam in a still. The steam entrains the essential oil vapor, which is condensed in the condenser so as to be recovered as a liquid phase in a Florentine vase (or essence jar), where the essential oil is separated from the water by settling. The term “aromatic water” or “hydrolate” or “distilled floral water” is used to describe the aqueous distillate which remains after the steam distillation, once the essential oil has been separated.

[0106] Production by dry distillation consists in obtaining the essential oil by distillation of woods, barks or roots, without addition of water or steam, in a closed chamber designed so that the liquid is recovered in the bottom part thereof. Cade oil is the best known example of a product obtained in this way.

[0107] The method of production by cold pressing applies only to citrus fruits (Citrus spp.) via mechanical processes at room temperature. The principle of the method is as follows: the zests are torn into pieces and the contents of the secretory cavities that have been broken are recovered by a physical process. The conventional process consists in exerting an abrasive action on the entire surface of the fruit under a stream of water. After removal of the solid waste, the essential oil is separated from the aqueous phase by centrifugation. Most industrial plants in fact allow simultaneous or sequential recovery of the fruit juices and of the essential oil.

[0108] Essential oils are generally volatile and liquid at room temperature, which differentiates them from “fixed” oils. They are more or less colored and their density is generally less than that of water. They have a high refractive index and most of them deflect polarized light. They are liposoluble and soluble in the usual organic solvents, distillable with steam, and very sparingly soluble in water.

[0109] Among the essential oils that may be used according to the invention, mention may be made of those obtained from plants belonging to the following botanical families: Abietaceae or Pinaceae, for example conifers; Amaryllidaceae; Anacardiaceae; Annonaceae, for example ylang ylang; Apiaceae, for example umbellifers, in particular dill, angelica, coriander, sea fennel, carrot or parsley; Araceae; Aristolochiaceae; Asteraceae, for example yarrow, artemisia, camomile, helichrysum; Betulaceae; Brassicaceae; Burseraceae, for example frankincense; Caryophyllaceae; Canellaceae; Caesalpiniaceae, for example copaifera (copaiba balsam); Chenopodiaceae; Cistaceae, for example rock rose; Cyperaceae; Dipterocarpaceae; Ericaceae, for example gaultheria (wintergreen); Euphorbiaceae; Fabaceae; Geraniaceae, for example geranium; Guttiferae; Hamamelidaceae; Hernandiaceae; Hypericaceae, for example St John’s wort; Iridaceae; Juglandaceae; Lamiaceae, for example thyme, oregano, monarda, savory, basil, marjorams, mints, patchouli, lavenders, sages, catnip, rosemary, hyssop, balm, rosemary; Lauraceae, for example ravensara, sweet bay, rosewood, cinnamon, litsea; Liliaceae, for example garlic; Magnoliaceae, for example magnolia; Malvaceae; Meliaceae; Monimiaceae; Moraceae, for example hemp or hop; Myricaceae; Myristicaceae, for example nutmeg; Myrtaceae, for example eucalyptus, tea tree, paperbark tree, cajuput, backhousia, clove, myrtle; Oleaceae; Piperaceae, for example pepper; Pittosporaceae; Poaceae, for example citronella, lemongrass, vetiver; Polygonaceae; Ranunculaceae; Rosaceae, for example roses; Rubiaceae; Rutaceae, for example all citrus plants; Salicaceae; Santalaceae, for example sandalwood; Saxifragaceae; Schisandraceae; Styracaceae, for example benzoin; Thymelaeaceae, for example agarwood; Tiliaceae; Valerianaceae, for example valerian, spikenard; Verbenaceae, for example lantana, verbena; Violaceae; Zingiberaceae, for example galangal, turmeric, cardamom, ginger; Zygophyllaceae.

[0110] Mention may also be made of the essential oils extracted from flowers (ylang ylang, neroli), from stems and leaves (patchouli, geranium, petitgrain), from fruit (coriander, aniseed, cumin, juniper), from fruit peel (bergamot, lemon, orange), from roots (angelica, celery, cardamom, iris, sweet flag, ginger), from wood (pinewood, sandalwood, guaiac wood, pink cedar, camphor), from grasses and Gramineae (tarragon, rosemary, basil, lemongrass, sage, thyme), from needles and branches (spruce, fir, pine, dwarf pine) and from resins and balms (galbanum, elemi, benzoin, myrrh, olibanum, opopanax).

[0111] Examples of fragrancing substances are notably: geraniol, geranyl acetate, farnesol, borneol, bornyl acetate, linolool, linalyl acetate, linalyl propionate, linalyl butyrate, tetrahydrolinalool, citronellol, citronellyl acetate, citronellyl formate, citronellyl propionate, dihydromyrcenol, dihydromyrcenyl acetate, tetrahydromyrcenol, terpineol, terpinyl acetate, nopol, nopyl acetate, nerol, neryl acetate, 2-phenylethanol, 2-phenylethyl acetate, benzyl alcohol, benzyl acetate, benzyl salicylate, styrallyl acetate, benzyl benzoate, amyl salicylate, dimethylbenzylcarbinol, trichloromethylphenylcarbinyl acetate, p-tert-butylcyclohexyl acetate, isononyl acetate, vetiveryl acetate, vetiverol, α-hexylcinnamaldehyde, 2-methyl-3-(p-isopropylphenyl)propanal, 2,4-dimethylcyclohex-3-enylcarboxaldehyde, tricyclodecenyl acetate, tricyclodecenyl propionate, 4-(4-hydroxy-4-methylpentyl)-3-cyclohexenecarboxaldehyde, 4-(4-methyl-3-pentenyl)-3-cyclohexenecarboxaldehyde, 4-acetoxy-3-pentyltetrahydropyran, 3-carboxymethyl-2-pentylcyclopentane, 2-n-4-heptylcyclopentanone, 3-methyl-2-pentyl-2-cyclopentenone, menthone, carvone, tagetone, geranylacetone, n-decanal, n-dodecanal, 9-decen-1-ol, phenoxyethyl isobutyrate, phenylacetaldehyde dimethyl acetal, phenylacetaldehyde diethyl acetal, geranonitrile, citronellonitrile, cedryl acetate, 3-isocamphylcyclohexanol, cedryl methyl ether, isolongifolanone, aubepinonitrile, aubepine, heliotropin, coumarin, eugenol, vanillin, diphenyl ether, citral, citronellal, hydroxycitronellal, damascone, ionones, methyl ionones, isomethyl ionones, solanone, irones, cis-3-hexenol and esters thereof, macrocyclic ketones, ethylene brassylate, and mixtures thereof.

[0112] According to a preferred embodiment of the invention, use is made of a mixture of different fragrancing substances which together generate a note which is pleasant to the user.

[0113] Thus, according to a preferred embodiment, the composition according to the invention comprises a mixture of fragrancing substances, in particular at least two different fragrancing substances, and preferably at least three different fragrancing substances.

[0114] The fragrancing substances will preferably be chosen such that they produce (top, middle and base) notes in the following families: citrus, aromatic, floral notes, in particular pink flowers and white flowers, spicy, woody, gourmand, chypre, fougère and leathery.

[0115] According to a particular embodiment, the fragrancing substance(s) used in a composition according to the invention is (are) different from essential oils.

[0116] Preferably, a composition according to the invention includes one or more natural fragrancing substances, preferably producing notes in the following families: floral notes, in particular pink flowers and white flowers, gourmands, and mixtures thereof.

[0117] According to a particular embodiment, a composition according to the invention includes one or more fragrancing substances belonging to the floral, green, citrus, ozonic, marine, aldehydic, musky, powdery, sweet woody, fruity, aromatic, gourmand and amber olfactory families.

[0118] According to a particular embodiment, a composition according to the invention includes one or more fragrancing substances belonging to the edible, spicy, leathery and optionally fruity, balsamic and aromatic olfactory families.

[0119] According to one embodiment of the invention, the composition comprises iv) one or more oils and v) one or more fragrancing substances.

[0120] According to another preferred embodiment of the invention, the composition comprises one or more v) fragrancing substances which are in the form of oil, in which case the composition may comprise an oil iv) different from v), or the composition may not comprise another oil iv) different from v).

[0121] Preferably, the composition comprises one or more v) fragrancing substances which is (are) in the form of oil and does not comprise any other non-fragranced oil v).

[0122] The composition of the invention also comprises vi) water in an amount by mass (or weight) of greater than or equal to 30%, preferably greater than or equal to 40% by weight relative to the total weight of the composition. Preferably, the amount of water is between 30% and 60% by weight, more preferentially between 40% and 50% by weight, relative to the total weight of the composition. The water can come from natural sources, or else it can be distilled.

[0123] According to one embodiment of the invention, the composition further comprises vii) one or more organic polyols different from i) and ii). Particularly, the organic polyol(s) vii) is (are) chosen from (C2-C6)alkanetriols such as glycerol.

[0124] The composition according to the invention has a pH preferably of between 3 and 8, and preferentially between 4 and 7, more preferentially between 4.5 and 6, such as 4.9 ± 0.3. This pH may be adjusted by means of one or more viii) pH-adjusters, in particular acidifying agents and basifying agents conventionally used in the cosmetics field.

[0125] Among the pH adjusters viii), mention may be made of mineral acids such as hydrochloric acid, orthophosphoric acid and sulfuric acid, or organic acids such as (poly)(hydroxy)(C1-C6)alkylcarboxylic acids such as acetic acid, tartaric acid, citric acid, lactic acid, and (C1-C6)alkylsulfonic acids. Among the basifying agents, examples that may be mentioned include aqueous ammonia, alkali metal or alkaline earth metal (bi)carbonates, alkanolamines such as monoethanolamine, diethanolamine, triethanolamine and derivatives thereof, and alkali metal or alkaline earth metal hydroxides, such as sodium or potassium hydroxide.

[0126] These pH adjusters may be present in an amount of between 0.01% and 1%, in particular between 0.1% and 0.5% by weight, relative to the total weight of the composition in order to obtain an acceptable pH. Preferably, the composition of the invention comprises one or more pH adjusters viii) chosen from (poly)(hydroxy)(C1-C6)alkylcarboxylic acids such as acetic acid, tartaric acid, citric acid and lactic acid, preferably citric acid.

[0127] The composition of the invention may also comprise one or more additives ix), i.e. ingredients different from i) to viii) as defined above, in particular cationic, anionic, zwitterionic or neutral, associative or non-associative, thickening polymers, sequestering agents such as alkali metal or alkaline earth metal glutamate diacetate salts (tetrasodium glutamate diacetate), antioxidants, preservatives such as alkali metal or alkaline earth metal benzoate salts (sodium benzoate), cosmetic or dermatological active agents, in particular natural active agents, UV screening agents, fruit extracts, and humectants. When they are present in the composition of the invention, these additives may be present in an amount ranging from 0.001% to 10% and better still from 0.01% to 5% by weight relative to the total weight of the composition.Presentation forms of the composition

[0128] The fragrancing composition according to the invention may be in the form of a lotion, an oil or an anhydrous gel. It may constitute a fragrancing, care or treatment composition for keratin materials, and may notably be in the form of an eau fraîche, eau de toilette, eau de parfum, aftershave lotion, care lotion, care oil such as a body oil, a sun oil or deodorants (sticks, roll-ons).

[0129] The composition of the invention may be packaged in a bottle, a jar, a tube, in the form of a roll-on, a squeeze bottle or wipes.

[0130] The fragrancing composition of the invention may be diffused by various systems, such as sprays, aerosols or piezoelectric devices.

[0131] The fragrancing composition according to the invention may be manufactured via known processes, generally used in the field of fragranced formulations.

[0132] The fragrancing compositions according to the invention may also be applied in the form of fine particles by means of pressurization devices. The devices in accordance with the invention are well known to a person skilled in the art and include non-aerosol pumps or “atomizers”, aerosol containers comprising a propellant and also aerosol pumps using compressed air as propellant. The latter are described in patents US 4,077,441 and US 4,850,517 (forming an integral part of the content of the description).

[0133] The compositions packaged as aerosols in accordance with the invention generally contain conventional propellants, such as, for example, dimethyl ether, isobutane, n-butane or propane.Fragrancing process

[0134] Another subject of the invention is a process for fragrancing human keratin materials or clothing, which consists in applying a fragrancing composition comprising the ingredients i) to vi) as defined previously to said keratin materials or said clothing. More particularly, the process of the invention is a process for fragrancing keratin materials, notably human keratin materials, such as the skin or human keratin fibers such as head hair or body hair, by applying the fragrancing composition comprising the ingredients i) to vi) as defined previously to said materials.

[0135] The invention will now be described with reference to the following examples, which are given as nonlimiting illustrations. In these examples, unless otherwise indicated, the amounts are expressed as percentages by weight.EXAMPLES

[0136] Comparative tests of stability and olfactory perception vs. a comparative example from WO2023 / 081742 are carried out:

[0137] IngredientsExample 1 (Invention)In g per 100 g of active material (AM)Example A (Comparative)In g per 100 g of AMPentylene glycol i)7.57.5Propylene glycol ii)19.557.5Polyglyceryl-4 caprate iii)1818Weight ratioi) / ii)0.381Fragrance v) + oil iv)* = fragranced oil4.74.7Glycerol vii)33Tetrasodium glutamate diacetate ix)0.120.12Sodium benzoate preservative ix)0.140.14Aqueous-glycolic extract of bitter orange in plant-based propylene glycol0.0010.001Citric acid viii)qs pH between 4 and 6qs pH between 4 and 6Water vi)qs 100qs 100

[0138] It appears that the composition according to the invention 1 is transparent and stable over time, even after several days. In addition, the fragrance is very pleasant; its olfactory perception is linear and lasts over time, even several hours (8 hours) after application. The same is not true for the comparative composition A in terms of transparency of composition, odor and tackiness after application to keratin materials, in particular the skin. Specifically, a lactescent haze, more opaque than the transparent emulsion of example 1, is observed visually.

[0139] In addition, during the application of the comparative composition of example A on keratin materials, in particular the skin, a “soaping” effect is observed. On applying the same amount of the composition of example 1 on the skin, no soaping is noted.

[0140] In addition, the composition of example A must be massaged significantly longer in order to penetrate into keratin materials, in particular the skin, when the same amount of composition of example 1 is applied, see table 2 below.

[0141] FormulaNumber of sprays (70 µl)Massage time in seconds (s)Example 1213.35Example A219.64Example 1622.34Example A642.74

[0142] Lastly, it was noted that the composition of example A, after application to the skin and drying, gives a significantly tackier effect than the composition of example 1 according to the invention. Moreover, the tacky effect lasts longer for the composition of example A than for the composition of example 1.

[0143] On the olfactory side, the rendering of the composition of example A after application to the keratin materials, in particular the skin, is different (slightly smoky at the start, far removed from the starting fragrance) whereas that coming from the composition of example 1 is closer to the starting fragrance (close to the starting fragrance without noting a smoky smell).

Claims

A composition, preferably a cosmetic composition, in the form of a (micro)emulsion, comprising:pentylene glycol;propylene glycol;one or more surfactants;one or more fatty substances which are liquid at 25°C and atmospheric pressure;one or more fragrancing substances; andat least 30% by weight of water relative to the total weight of said composition;it being understood that:the weight content of C1-C5alkanol is less than or equal to 3%,the weight ratio i) / ii) is less than 1; andif the fragrancing substance(s) is (are) also in the form of a liquid fatty substance, then iv) may be absent.The composition as claimed in the preceding claim, wherein the composition is in the form of an oil-in-water (micro)emulsion, preferably an oil-in-water microemulsion.The composition as claimed in claim 1 or 2, wherein the composition is in the form of a (micro)emulsion in which the average diameter of the particles or micelles is less than or equal to 300 nm, preferably less than or equal to 100 nm, more particularly less than or equal to 50 nm, better still less than or equal to 40 nm, even better still less than or equal to 30 nm; more particularly the particles or micelles have an average diameter of between 1 and 300 nm, more particularly between 2 nm and 100 nm, preferably between 3 and 60 nm, more preferentially between 4 and 40 nm, more preferentially between 5 and 30 nm, even more preferentially between 10 and 20 nm.The composition as claimed in any one of the preceding claims, which is in the form of micellar water.The composition as claimed in any one of the preceding claims, which is clear, preferably transparent.The composition as claimed in any one of the preceding claims, which comprises less than 3% by weight of C1-C5alkanol, in particular ethanol,relative to the total weight of the composition, particularly less than 2% by weight of C1-C5alkanol, in particular ethanol, more particularly less than 1% by weight of C1-C5alkanol, in particular ethanol, even more particularly less than 0.5% by weight of C1-C5alkanol, in particular ethanol, and preferentially less than 0.1% by weight of C1-C5alkanol, in particular ethanol, and more preferentially, the composition of the invention is free of C1-C5alkanol,in particular ethanol.The composition as claimed in any one of the preceding claims, wherein:the pentylene glycol i) / propylene glycol ii) weight ratio is less than or equal to 0.8, preferably less than or equal to 0.5, more preferentially less than or equal to 0.45, more particularly between 0.1 and 0.5, preferentially between 0.2 and 0.45, more preferentially between 0.3 and 0.4, such as 0.4 ± 0.05; and / orthe pentylene glycol i) / surfactant(s) iii) weight ratio is less than or equal to 0.5, preferably is less than or equal to 0.45, and preferably greater than or equal to 0.2, particularly between 0.21 and 0.43.The composition as claimed in any one of the preceding claims, wherein the propylene glycol ii) / surfactant(s) iii) weight ratio is greater than or equal to 1, preferably between 1.0 and 1.5 inclusive, preferentially between 1.01 and 1.20, more preferentially between 1.05 and 1.10.The composition as claimed in any one of the preceding claims, wherein the amount of i) pentylene glycol is less than 15% by weight relative to the weight of the composition, preferably less than or equal to 10% by weight, more particularly between 5% and 9% by weight, such as 7.5% ± 0.5%.The composition as claimed in any one of the preceding claims, wherein the amount of ii) propylene glycol is greater than or equal to 10% by weight relative to the weight of the composition, preferably greater than or equal to 15% by weight, more particularly between 15% and 30% by weight, such as 19.5 ± 1%.The composition as claimed in any one of the preceding claims, wherein iii) the surfactant(s) is (are) nonionic, preferably chosen, alone or as mixture(s), from a) fatty alcohols, b) alpha-diols, c) alkylphenols; these 3 types of compounds a) to c) being polyethoxylated, polypropoxylated and / or polyglycerolated, and having a fatty chain comprising, for example, 8 to 30 carbon atoms, in particular comprising 10 to 22 carbon atoms, it being possible for the number of ethylene oxide or propylene oxide groups to range notably from 2 to 200, in particular from 10 to 100 and for the number of glycerol groups to range notably from 2 to 200, in particular from 10 to 100; copolymers of ethylene oxide (EO) and propylene oxide (PO), condensates of ethylene oxide and of propylene oxide with fatty alcohols; polyethoxylated fatty amides preferably containing from 2 to 30 mol of EO, polyglycerolated fatty amides including on average 1 to 5, and in particular 1.5 to 4, glycerol groups; oxyethylenated fatty acid esters of sorbitan containing from 2 to 200 mol of EO, in particular from 3 to 100 EO; fatty acid esters of sucrose; fatty acid esters of polyethylene glycol, alkylpolyglycosides, N-alkylglucamine derivatives, amine oxides such as (C10-C14) alkylamine oxides or N-acylaminopropylmorpholine oxides; more preferentially, the surfactants are chosen from a) oxyethylenated fatty acid monoesters and diesters of sorbitan containing from 2 to 100 mol of EO, in particular from 3 to 50 EO, such as propylene glycol stearate containing from 10 to 30 EO, such as 20 EO; b) glyceryl monostearate-distearate / polyethylene glycol stearate (100 EO), preferably glyceryl monoesters of C6-C30fatty acids.The composition as claimed in any one of the preceding claims, wherein the surfactant(s) iii) is (are) chosen from b) and in particular of formula:Ra-C(O)-O-[CH2-CH(OH)-CH2-O]p-H (I)in which formula(I):Rarepresents a linear or branched, preferably linear, saturated or unsaturated, preferably saturated, hydrocarbon chain, comprising from 7 to 24 carbon atoms, more particularly 8 to 18 carbon atoms, more preferentially between 9 and 12 carbon atoms; andprepresents an integer between 2 and 10 inclusive, preferably between 3 and 6, such as 4;particularly, the surfactant(s) iii) is (are) chosen from polyglyceryl 2 to 10 esters of fatty acids, preferably C8-C24fatty acids, such as polyglyceryl-10 stearate, polyglyceryl-2 isostearate, polyglyceryl-10 myristate, and polyglyceryl-4 caprate, more preferentially polyglyceryl-4 caprate.The composition as claimed in any one of the preceding claims, wherein the amount of surfactants iii) ranges from 0.5% to 40% by weight, in particular from 1% to 30% by weight, and more particularly from 5% to 25% by weight, better still between 10% and 20%, relative to the total weight of the composition of the invention.The composition as claimed in any one of the preceding claims, which comprises one or more v) fragrancing substances which is (are) in the form of oil, in which case the composition may comprise an oil iv) different from v), or the composition may not comprise another oil iv) different from v), preferably, the composition comprises one or more v) fragrancing substances which is (are) in the form of oil and does not comprise any other non-fragranced oil v).The competition as claimed in any one of the preceding claims, wherein the amount by weight of water vi) is greater than or equal to 40% by weight relative to the total weight of the composition; preferably, the amount of water is between 30% and 60% by weight, more preferentially between 40% and 50% by weight, relative to the total weight of the composition.The composition as claimed in any one of the preceding claims, further comprising vii) one or more organic polyols different from i) and ii); particularly the organic polyol(s) vii) is (are) chosen from (C2-C6)alkanetriols such as glycerol.The composition as claimed in any one of the preceding claims, having a pH of between 3 and 8, preferentially between 4 and 7, more preferentially between 4.5 and 6, such as 4.9 ± 0.3.The competition as claimed in any one of the preceding claims, comprising one or more pH adjusters viii), particularly chosen from:mineral acids such as hydrochloric acid, orthophosphoric acid and sulfuric acid,organic acids such as (poly)(hydroxy)(C1-C6)alkylcarboxylic acids such as acetic acid, tartaric acid, citric acid, lactic acid and (C1-C6)alkylsulfonic acids, andbasifying agents, such as aqueous ammonia, alkali metal or alkaline earth metal (bi)carbonates, alkanolamines such as monoethanolamine, diethanolamine, triethanolamine and derivatives thereof, and alkali metal or alkaline earth metal hydroxides, such as sodium or potassium hydroxide;preferably, the composition comprises one or more pH adjusters viii) chosen from (poly)(hydroxy)(C1-C6)alkylcarboxylic acids such as acetic acid, tartaric acid, citric acid and lactic acid, preferably citric acid.A process for fragrancing keratin materials or clothing, preferably fragrancing keratin materials, by applying one or more fragrancing compositions as defined in any one of the preceding claims to said keratin materials or said clothing.