Hair oil

Abstract

Hair oils that contain dimethiconols, at least two silicones of different viscosities and specific solvents are suitable for the care of hair fibers, especially to improve the touch feel of the hair, detangling and ease of combing of wet and dry hair and to increase hair shine.

Description

Title of the invention: Hair oil

[0001] The present invention relates to hair oils comprising dimethiconol, a combination of specific silicones of different viscosity and at least one solvent for the silicones.

[0002] The invention also relates to the use of the hair oil for hair care and a hair care method using the hair oil.

[0003] Human hair is exposed to natural environmental influences as well as many other stresses, including cosmetic stresses. Stresses that put a strain on the hair include, in particular, coloring and styling the hair, especially by means of a perm. Cosmetic hair care agents are used to reduce the negative consequences of (environmental) influences that damage the hair structure, but also to preserve and improve the natural hair structure. Organosilicon compounds, in particular silicones such as trisiloxanes characterized by their caring properties, are essential active ingredients of many cosmetic agents.

[0004] Hair treatment products owe their conditioning power primarily to the quats, silicone oils, fatty acids, and polymers they are made of. For several years now, hair cosmetics has been developing hair oils made primarily from silicone oils. In addition, hair oils are used as leave-on products - in other words, the formulations remain on the hair, without subsequent rinsing. This saves the user time and water. Hair oils have, from this point of view, advantageous durability. These hair oils are enjoying enormous commercial success.

[0005] Commercially available silicone mixtures generally contain volatile cyclic silicones (cyclomethicones) as solvents or formulation aids. The European Chemicals Agency has recently classified cyclomethicones as a substance of very high concern, which is why significant quantities of cyclomethicones can no longer be used in cosmetic products.

[0006] However, the development of cyclomethicone-free hair oils poses difficulties because silicone-based hair oils are often associated with a heavy and unsatisfactory (sticky) product feel and / or appearance. They do not distribute satisfactorily in the hair and leave it greasy and heavy, especially after frequent use.

[0007] Furthermore, from an ecological point of view, there is an increasing effort to at least partially replace silicones in commercially available hair oils with raw materials available from natural sources and / or having better biodegradability.

[0008] However, these requirements should not be met at the expense of good care performance of hair oils. The greatest difficulty encountered in replacing silicone oils in hair oils is finding natural oils or natural raw materials that do not weigh down or grease the hair.

[0009] Document WO 2020 / 201410 describes hair care compositions which, in addition to crosslinked alkanes, contain dimethiconol and different dimethicones.

[0010] However, such hair care compositions were not always fully satisfactory with regard to the feel of the product and the distribution in the length of the hair. In addition, hair oils of this type are mostly composed exclusively of silicones, therefore the problem of hair becoming heavy, especially after regular use, persists to a certain extent.

[0011] The present invention therefore aims to provide hair oils which make the use of cyclic silicones superfluous and which nevertheless retain the same level of effectiveness as silicone formulations. The weighting of the hair and the greasy state of the treated hair, which often occurs with the use of silicones, must be avoided. In particular, the present invention aims to provide hair oils having an excellent feel and appearance of the product, which ensure good incorporation into the hair, so that their care potential can be fully exploited.

[0012] The objective is achieved according to the invention by a hair oil which comprises (relative to the total weight of the hair oil)

[0013] a) 0.5 to 20% by weight of at least one dimethiconol,

[0014] b) 1 to 65% by weight of at least one first silicone having a viscosity < 50 cSt at 25°C,

[0015] c) 1 to 40% by weight of at least one second silicone having a viscosity > 10,000 cSt at 25°C,

[0016] d) 25 to 90% by weight of at least one solvent for one or more of components a), b), c), chosen from

[0017] - linear alkanes from C6 to C18,

[0018] - ester oils,

[0019] - C2 to C6 alcohols,

[0020] - or mixtures thereof.

[0021] In the context of the present invention, dimethiconols a) are understood to mean the compounds

[0022] of the following formulas (I) or (II) [Chem.l]

[0023] [Chem. 2] O.....If- O Si OH (I) SrrO—Si—OH (II) R^ R;

[0024] where, in formulas (I) and (II),

[0025] - R1 represents hydrogen, a methyl radical, a C2 to C30 hydrocarbon radical linear, saturated or unsaturated, a phenyl radical and / or an aryl radical,

[0026] - R2 represents hydrogen, a methyl radical, a C2 to C30 hydrocarbon radical, linear, saturated or unsaturated, a phenyl radical and / or an aryl radical, and

[0027] - x, y and z each independently represent an integer from 0 to 50,000.

[0028] The dimethiconols a) are also called silicone gum and generally have a high molecular weight and a high viscosity. Their molecular weight is preferably > 10,000 daltons, more preferably > 50,000 daltons and in particular > 100,000 daltons. Furthermore, suitable dimethiconols according to the invention a) have a viscosity in the range of > 10,000 cP, preferably > 25,000 cP and in particular > 50,000 cP (each measured at 25 °C using a glass capillary viscometer according to the Dow Corning Corporate CTM 0004 test method of July 20, 1970.

[0029] Suitable dimethiconols according to the invention are commercially available, for example from Dow Corning under the name Dowsil® 1515 Gum.

[0030] The hair oils according to the invention contain dimethiconol, in particular the above-mentioned preferred dimethiconols, in a proportion by weight of 0.5 to 20% by weight relative to the total weight of the hair oil. More preferred are pro portions by weight of at least one dimethiconol of 1 to 17.5% by weight and in particular of 1.5 to 15% by weight.

[0031] In a preferred embodiment, it is also possible for the high-viscosity dimethiconol a) to be used as a premix with a low-viscosity component (generally low-viscosity silicones) in the hair oils according to the invention. On the one hand, this can facilitate the incorporation of component a) and, on the other hand, promote a particularly attractive product feel and appearance.

[0032] When using such premixes, however, care must be taken not to exceed either the preferred amount of the at least one dimethiconol a) (and possibly the amounts of other silicones of lower viscosity such as components b) and / or c)).

[0033] Corresponding premixes are known in the current state of the art and are available, for example, under the trade names Dowsil® 1507, Dowsil® OHX-0080, Serasence® GB 17, Belsil® GB 1020.

[0034] The hair oils according to the invention contain at least a first silicone b), which has a viscosity < 50 cSt at 25 °C, as a second essential ingredient.

[0035] Dimethiconols are not among the suitable silicones b).

[0036] Particularly suitable silicones b) are volatile or liquid at 20°C and 1013 mbar and are chosen from the compounds of formula (III)

[0037] [Chem.3] (CHshSHO-SKCHs)^ (III)

[0038] in which x represents a number from 0 to 100, more preferably from 0 to 50 and in particular from 1 to 25.

[0039] They are called dimethicones (dimethylpolysiloxanes).

[0040] The term "volatile" means that the silicones b) preferably have a vapor pressure in the range of 0.13 to 40,000 Pa (103 - 300 mmHg), more preferably 1.3 to 13,000 Pa (0.01 - 100 mmHg) and in particular 1.3 to 1300 Pa (0.01 - 10 mmHg) and a boiling point in the range of 60° to 240 °C.

[0041] Even more preferred silicones b) are polydialkylsiloxanes which have a viscosity < 25 cSt and in particular < 10 cSt at 25 °C (measured in each case at 25 °C using a glass capillary viscometer according to the Dow Corning Corporate CTM 0004 test method of July 20, 1970).

[0042] Corresponding silicones b) are known in the current state of the art and are available, for example, under the trade names Xiameter® PMX-200 Silicone Fluid 2 cS, Xiameter® PMX-200 Silicone Fluid 5 cS, Xiameter® PMX-200 Silicone Fluid 10 cS, Dowsil® DM 5.

[0043] The hair oils according to the invention contain the silicones b), in particular the above-mentioned preferred dimethicones, in a proportion by weight of 1 to 65% by weight relative to the total weight of the hair oil. More preferred are proportions by weight of the at least one silicone b) of 2 to 60% by weight and in particular of 3 to 55% by weight.

[0044] The hair oils according to the invention contain at least a second silicone c), which has a viscosity > 10,000 cSt at 25°C, as a third essential ingredient.

[0045] Dimethiconols are not among the suitable silicones c).

[0046] Particularly suitable silicones c) are non-volatile or liquid to viscous at 20°C and 1013 mbar and are chosen from the compounds of formula (III)

[0047] (CH3)3Si-[O-Si(CH3)2]xO-Si(CH3)3 (III),

[0048] in which x represents a number from 120 to 10,000, more preferably from 150 to 9,000 and in particular from 175 to 7,500. They are called dimethicones (dimethylpolysiloxanes).

[0049] The term "non-volatile" means that the silicones b) preferably have a vapor pressure in a range <0.13 Pa (0.01 mmHg).

[0050] Even more preferred silicones c) are polydialkylsiloxanes which have a viscosity > 25,000 cSt and in particular > 50,000 cSt (measured in each case at 25°C using a glass capillary viscometer according to the Dow Corning Corporate CTM 0004 test method of July 20, 1970).

[0051] Corresponding silicones c) are known in the current state of the art and are available, for example, under the trade names Xiameter® PMX-200 Silicone Fluid 60,000 cS, Xiameter® PMX-200 Silicone Fluid 100,000 cS, Dowsil® DM 60000.

[0052] The hair oils according to the invention contain silicones c), in particular the above-mentioned preferred dimethicones, in a proportion by weight of 1 to 40% by weight relative to the total weight of the hair oil. More preferred are proportions by weight of the at least one silicone c) of 2 to 30% by weight and in particular of 3 to 25% by weight.

[0053] As a fourth essential ingredient, the hair oils according to the invention contain at least one solvent d) of one or more silicones a) to c).

[0054] Suitable solvents d) should in particular dissolve silicones a) and c) of high to very high viscosity well, so that they can be handled and processed more easily. At the same time, the use of silicone-containing solvents should be considerably reduced and hair oils with excellent feel, good spreading properties and optimal hair care potential should be provided. In addition, a higher proportion of components d) in the hair oils according to the invention extends the service life of the products.

[0055] The solvent d) is chosen from

[0056] - linear alkanes C6 to Cl8,

[0057] - ester oils,

[0058] - C2 to C6 alcohols,

[0059] - mixtures thereof.

[0060] The at least one solvent d) is used in the hair oils according to the invention in a weight proportion of 25 to 90% by weight relative to the total weight of the hair oil. Preferred proportions by weight of the solvent(s) d) of 30 to 90% by weight, particularly preferably of 35 to 90% by weight and in particular of 40 to 85% by weight.

[0061] By linear C6 to C18 alkanes is meant hexane, heptane, octane, nonane, decane, undecane, dodecane, tridecane, tetradecane, pentadecane, hexadecane, heptadecane, octadecane and mixtures thereof. The hair oils according to the invention preferably comprise C6 to C16 alkanes which are liquid at room temperature (20 °C), particularly preferably C10 to C16 alkanes and in particular C11 to C15 alkanes. It is possible to use alkanes alone or mixtures of at least two of the alkanes mentioned.

[0062] For example, mixtures of undecane and dodecane, mixtures of dodecane and tridecane, mixtures of undecane and tridecane or mixtures of undecane, dodecane and tridecane may be used.

[0063] Mixtures of tridecane and tetradecane, tridecane and pentadecane, tetradecane and pentadecane or tridecane, tetradecane and pentadecane may also be used.

[0064] The hair oils according to the invention which contain, as alkane, a mixture of undecane and tridecane, or exclusively dodecane, have particularly advantageous effects in combination with the silicones a) to c).

[0065] The corresponding products are commercially available; for example under the names Cetiol® Ultimate (INCI name: Undecane and Tridecane) from BASF or Parafol® 12-97 (INCI name: Dodecane) from Sasol. They also offer the advantage of being available from renewable sources.

[0066] The proportion by weight of the linear C6 to C16 alkanes relative to the total weight of the hair oils is preferably 5 to 90% by weight, more preferably 30 to 90% by weight, particularly preferably 35 to 90% by weight and in particular 40 to 85% by weight.

[0067] The hair oils according to the invention particularly preferably contain undecane, dodecane, tridecane, tetradecane, pentadecane or their mixtures in the amounts mentioned above.

[0068] In a preferred embodiment, at least one linear C6 to C16 alkane may also be used in admixture with a dimethiconol a) in hair oils according to the invention.

[0069] Such mixtures are known and commercially available, for example under the name Dowsil® 1508 (INCI name: C13-15 Alkane and Dimethiconol).

[0070] Suitable ester oils preferably mean esters of C6 to C30 fatty acids with C2 to C30 alcohols, diols or polyols in which the silicones a) and c) in particular can be easily solubilized and which are liquid at room temperature (20°C).

[0071] Preferred are esters of saturated, linear or branched fatty alcohols having from 2 to 18 carbon atoms with saturated or unsaturated, linear or branched fatty acids having from 6 to 18 carbon atoms, which may be hydroxylated. Preferred examples of these esters are isopropyl palmitate, isopropyl stearate, isopropyl myristate, 2-hexyldecyl stearate, 2-hexyldecyl laurate, isodecyl neopentanoate, isononyl isononanoate, 2-ethylhexyl palmitate and 2-ethylhexyl stearate.Also preferred are isopropyl isostearate, isopropyl oleate, isooctyl stearate, isononyl stearate, isocetyl stearate, isononyl isononanoate, isotridecyl isononanoate, cetearyl isononanoate, 2-ethylhexyl laurate, 2-ethylhexyl isostearate, 2-ethylhexyl cocoate, 2-octyldodecyl palmitate, butyloctanoic acid, 2-butyloctanoic acid, di-isotridecyl acetate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, oleyl oleate, oleyl erucate, erucyl oleate, erucyl erucate, ethyl glycol dioleate, ethylene glycol dipalmitate, n-hexyl laurate, n-decyl oleate, oleyl oleate, oleylolactyl oleate, erucyl oleate or mixtures thereof.

[0072] Other preferred ester oils are selected from triglycerides of C6 to C30 fatty acids, linear or branched, saturated or unsaturated, optionally hydroxylated, provided that they are liquid under standard conditions. Natural ingredients are particularly preferred and may be selected from soybean oil, cottonseed oil, sunflower oil, palm oil, palm kernel oil, coconut oil, linseed oil, almond oil, castor oil, corn oil, rapeseed oil, olive oil, sesame oil, safflower oil, wheat germ oil, peach kernel oil. Only the liquid constituents of coconut oil and the like may also be particularly suitable.Particularly preferred are triglyceride oils, especially capric / caprylic triglycerides such as the commercial products Myritol® 318 or Myritol® 331 (BASF / Cognis), having unbranched fatty acid residues, as well as glyceryl triisostearin and glyceryl tri(2-ethylhexanoate) having branched fatty acid residues. Other suitable ingredients include, among others, those with the INCI names Coco . caprylate and Coco caprylate / caprate.

[0073] Other preferred non-volatile non-silicone ester oils are selected from linear or branched C2-C10 alkanol dicarboxylic acid esters, in particular diisopropyl adipate, di-n-butyl adipate, di-(2-ethylhexyl) adipate, dioctyl adipate, diethyl / di-n-butyl / dioctyl sebacate, diisopropyl sebacate, dioctyl malate, dioctyl maleate, dicaprylyl maleate, diisooctyl succinate, di-2-ethylhexylsuccinic acid and di-(2-hexyldecyl)succinic acid.

[0074] Other preferred non-volatile non-silicone ester oils according to the invention are chosen from addition products of 1 to 5 propylene oxide units with mono- or multivalent C8 to C22 alkanols such as octanol, decanol, decanediol, lauryl alcohol, myristyl alcohol and stearyl alcohol, for example PPG-2 myristyl ether and PPG-3 myristyl ether.

[0075] Other preferred non-volatile non-silicone ester oils according to the invention are chosen from the addition products of at least 6 ethylene oxide and / or propylene oxide units with mono- or multivalent C3 to C22 alkanols such as glycerol, butanol, butanediol, myristyl alcohol and stearyl alcohol, which can be esterified if desired, for example PPG 14-butyl ether, PPG-9 butyl ether, PPG-10 butanediol and PPG-15 stearyl ether.

[0076] Other preferred non-volatile non-silicone ester oils according to the invention are chosen from symmetrical, asymmetrical or cyclic esters of carbonic acid with C6 to C20 alcohols, for example di-n-caprylyl carbonate (Cetiol® CC) or di-(2-ethylhexyl)carbonate (Tegosoft DEC). Esters of carbonic acid with C1 to C5 alcohols, for example glycerol carbonate or propylene carbonate, are not suitable compounds as cosmetic oils.

[0077] In a particularly preferred embodiment, the hair oils according to the invention comprise or consist of coconut caprylate as solvent d).

[0078] In another particularly preferred embodiment, the hair oils according to the invention comprise or consist of coco caprylate / caprate as solvent d).

[0079] In another particularly preferred embodiment, the hair oils according to the invention comprise or consist of caprylic / capric triglycerides as solvent d).

[0080] In another particularly preferred embodiment, the hair oils according to the invention comprise or consist of isopropyl myristate as solvent d).

[0081] The ester oil(s) may be used in the hair oils according to the invention, preferably in a proportion by weight of 30 to 90% by weight per relative to the total weight of the hair oil. More preferred are weight proportions of 35 to 85% by weight, particularly preferably 40 to 80% by weight and especially 45 to 75% by weight.

[0082] Particularly preferably, the hair oils according to the invention contain coconut caprylate, coconut caprylate / caprate, caprylic / capric triglycerides, isopropyl myristate or mixtures thereof in the amounts mentioned above.

[0083] Among the suitable C2 to C6 alcohols, for the purposes of the present invention, alcohols and polyalcohols (polyhydroxylated compounds) having from 2 to 6 carbon atoms and at least one hydroxyl group are preferably understood. Typical examples of suitable alcohols according to the invention are ethanol, 1-propanol, 2-propanol, isopropanol, 1-butanol, 2-butanol, 1-pentanol, 2-pentanol, 1-hexanol, 2-hexanol, ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, dipropylene glycol, 2-methyl-1,3-propanediol, 1,2-butylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, isoprene glycol, 1,2-pentanediol (pentylene glycol), 1,3-pentanediol, 1,2-hexanediol, 1,6-hexanediol, 1,2,6-hexanetriol, glycerol, diglycerol, erythritol, sugar alcohols such as sorbitol, mannitol, isomaltitol, lactitol, sorbitol, xylitol, fructose, glucose, lactose, galactose or mixtures of these alcohols.

[0084] Particularly preferred are ethanol, propanol, isopropanol, 1-butanol, 1-hexanol, 1,2-propylene glycol, dipropylene glycol, glycerol, diglycerol and mixtures thereof. Ethanol is particularly preferred.

[0085] The C2 to C6 alcohol(s) may preferably be used in the hair oils according to the invention in a weight proportion of 30 to 90% by weight relative to the total weight of the hair oil. More preferred are weight proportions of 35 to 85% by weight, particularly preferably 40 to 80% by weight and in particular 45 to 75% by weight.

[0086] It is particularly preferred to contain the ethanol according to the invention in the amounts mentioned above.

[0087] As already indicated above, conventional silicone-based hair oils or commercial mixtures comprising high viscosity silicones generally comprise volatile silicones - predominantly cyclic silicones - which are known under the INCI name Cyclomethicone (cyclomethicone). The term INCI Cyclomethicone refers in particular to cyclotrisiloxane (hexamethylcyclotrisiloxane - D3), cyclotetrasiloxane (octamethylcyclotetrasiloxane - D4), cyclopentasiloxane (decamethylcyclopentasiloxane - D5) and cyclohexasiloxane (dodecamethylcyclohexasiloxane - D6). These silicone oils have a vapor pressure of approximately 13 to 15 Pa at 20 °C.

[0088] Due to their persistence in the environment, however, it is desirable to avoid the use of cyclomethicones in cosmetic products as much as possible.

[0089] In a particularly preferred embodiment, the hair oils according to the invention are therefore substantially free of cyclic silicones.

[0090] In another preferred embodiment, the hair oils according to the invention are substantially free of cyclomethicones D3, D4, D5, D6.

[0091] In this context, "substantially free" means that no free cyclic silicone compounds are added to the hair oils according to the invention.

[0092] In the case where commercial mixtures contain cyclic silicones as impurities, it is also preferred that their proportion by weight represents a maximum of 0.25% by weight, more preferably a maximum of 0.1% by weight and in particular a maximum of 0.05% by weight relative to the total weight of the hair oils.

[0093] Furthermore, the particularly preferred hair oils according to the invention are also substantially free of water.

[0094] In this context, "substantially free" means that the water content of the preferred hair oils, relative to the total weight of the hair oils, is less than 5% by weight, preferably less than 2.5% by weight, particularly preferably less than 1% by weight and particularly less than 0.1% by weight, the most particularly preferred hair oils containing no water.

[0095] The caring effect of the hair oils according to the invention can be further increased by adding other oil components.

[0096] Other suitable oil components include the following:

[0097] - natural oils

[0098] - fatty alcohols

[0099] - and mixtures thereof.

[0100] In a preferred embodiment, the hair oils according to the invention additionally contain 0.1 to 10% by weight of at least one natural oil (relative to the total weight of the hair oil).

[0101] In the context of the present invention, natural oils are preferably understood to mean Ricinus Communis (castor) seed oil, crab seed oil, amaranth seed oil, apricot kernel oil, argan oil, avocado oil, babassu oil, cottonseed oil, borage seed oil, camelina oil, safflower oil, peanut oil, pomegranate seed oil, grapefruit seed oil, hemp oil, hazelnut oil, elderberry seed oil, blackcurrant seed oil, jojoba oil, cocoa butter, linseed oil, macadamia nut oil, corn germ oil, almond oil, marula oil, evening primrose oil, olive oil, orange oil, palm oil, peach kernel oil, rapeseed oil, rice bran oil, sea buckthorn pulp oil, sea buckthorn kernel oil, sesame oil, shea butter, soybean oil, sunflower oil, grape seed oil, walnut oil, wheat germ oil, wild rose oil, liquid portions of coconut oil and mixtures thereof.

[0102] The hair oils according to the invention particularly preferably contain 0.1 to 10% by weight of one or more of the above-mentioned natural oils (relative to the total weight of the hair oil).

[0103] In another preferred embodiment, the hair oils according to the invention additionally contain 0.1 to 20% by weight of at least one fatty alcohol (relative to the total weight of the hair oil).

[0104] In the context of the present invention, the fatty alcohols are preferably caproic alcohol, caprylic alcohol, 2-ethylhexyl alcohol, capric alcohol, lauryl alcohol, isotridecyl alcohol, myristyl alcohol, cetyl alcohol, palmoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, linolyl alcohol, linolenic alcohol, elaeostearyl alcohol, arachyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol and brassidyl alcohol and mixtures thereof.

[0105] Particularly preferably, the hair oils according to the invention contain 0.1 to 20% by weight of one or more of the above-mentioned fatty alcohols (relative to the total weight of the hair oil).

[0106] The advantageous properties of the hair oils according to the invention can be further improved if antioxidants are added to them.

[0107] Examples of antioxidants suitable for the purposes of the present invention include:

[0108] - carotenoids, in particular lycopene and astaxanthin

[0109] - carotenes, in particular beta-carotene

[0110] - tocopherols, in particular tocopheryl acetate [YES] - dihydroquercetin

[0112] - gallic acid ester

[0113] - 3,4-dihydro-7-methoxy-2,2-dimethyl-2H-l-benzopyran-6-ol

[0114] - polyphenols from Vitis vinifera

[0115] - ubiquinones and / or ubiquinols

[0116] - superoxide dismutases

[0117] - ellagic acid and / or ellagate

[0118] - and their mixtures.

[0119] Particularly preferred are beta-carotene, tocopheryl acetate or mixtures thereof, since in addition to their antioxidant effect, these antioxidants also promote the good appearance produces hair oils according to the invention. Their addition gives the hair oils according to the invention a particularly rich appearance (pure oil color).

[0120] The antioxidants may preferably be contained in the hair oils according to the invention in a proportion by weight of 0.001 to 1% by weight relative to the total weight of the hair oil.

[0121] The hair oils according to the invention particularly preferably contain 0.001 to 1% by weight of vitamin E acetate (tocopheryl acetate), beta-carotene and / or mixtures thereof (relative to the total weight of the hair oil).

[0122] The hair oil is particularly preferably applied to the user's hand by means of a dispenser. Thus, the packaging is adapted according to this mode of application, as will be understood by those skilled in the art. The user then spreads the hair oil from his / her hand(s) over the length of the hair and the ends. The user may spread the hair oil on his / her hand(s) before spreading on the hair. The user may pump the hair oil into his / her hand, and the dispenser may therefore contain a pump. The dispenser may also comprise a pipette so that the oil can be dispensed from the dispenser to the hand. The dispenser may also comprise a droplet insert.

[0123] Alternatively, the hair oil can also be applied in the form of a spray oil and sprayed onto the hair. The spray can be a pump spray or the spraying can be carried out using propellants. Suitable propellants (propellant gases) are propane, propene, n-butane, isobutane, isobutene, n-pentane, pentene, iso-pentane, iso-pentene, methane, ethane, dimethyl ether, nitrogen, air, oxygen, nitrous oxide, 1,1,1,3-tetrafluoroethane, heptafluoro-n-propane, perfluoroethane, monochloro-difluoromethane, 1,1-difluoroethane, more precisely either individually or in combination. Hydrophilic propellant gases, such as carbon dioxide, may also be used advantageously provided that the proportion of hydrophilic gases chosen is low and a lipophilic propellant gas (e.g. propane / butane) is present in excess.Propane, n-butane, isobutane and mixtures of these propellant gases are particularly preferred. It has been found that the use of n-butane as the sole propellant gas may be particularly preferred. Containers made of metal (aluminum, tinplate, tin), protected or non-burst plastic or glass with a plastic coating on the outside can be used as pressure gas containers; compressive strength and rupture strength, corrosion resistance, ease of filling as well as aesthetic aspects, handling, printability, etc. play a role in their selection.

[0124] Thus, the invention also relates to the use of hair oil for care keratin fibers.

[0125] Another subject of the present application is therefore a process for treating keratin fibers, in which a hair oil according to the invention is applied to the dried and / or wet keratin fibers.

[0126] The hair oil according to the invention is preferably used immediately before, during or after a hair treatment with an oxidizing or surfactant effect. In the context of the invention, the expression "immediately before the oxidizing or surfactant hair treatment" is understood as an application immediately following the oxidizing or surfactant hair treatment, the hair treatment agent according to the invention having been previously rinsed from the hair, or preferably left on the hair, and the hair preferably still being damp.

[0127] In the context of the invention, the expression "after the oxidative or surfactant hair treatment" is understood to mean an application which follows either immediately after the oxidative or surfactant hair treatment, the hair treatment agent according to the invention being applied to the hair which is preferably still damp, towel-dried as soon as the agent with an oxidative or surfactant effect has been rinsed out, or applied to dry or damp hair after only a few hours or a few days. In both cases, the hair treatment agent according to the invention can be rinsed out after a reaction time of a few seconds to 45 minutes or can remain completely on the hair.

[0128] Another subject of the present application is the use of a hair oil according to the invention for the care of keratin fibers. In particular, the use of a cosmetic agent according to the invention is concerned here.

[0129] * to improve the ease of detangling hair,

[0130] * to improve the ease of combing wet and dry hair,

[0131] * to improve the shine of keratin fibers,

[0132] * to improve the feel of keratin fibers.

[0133] According to the invention, ease is understood to mean both the ease of combing of wet fibers and that of dry fibers. The associated ease of combing or the force exerted during the combing operation of a group of fibers is used to measure the ease of combing. The measurement parameters can be evaluated sensorily by a person skilled in the art or can be quantified using measuring devices.

[0134] In addition to the active substances described above, the hair oils according to the invention may contain other ingredients. The group of these other ingredients includes in particular cosmetically active substances, adjuvants and additives.

[0135] A first group of optional ingredients is formed by the supplementary substances- ingredients which make up the oily bodies. Examples of these include di-n-alkyl ethers having between 12 and 36 carbon atoms in total, for example:

[0136] - Di-n-alkyl ethers having between 12 and 36 carbon atoms in total, in particular 12 to 24 carbon atoms, such as for example di-n-octyl ether, di-n-decyl ether, di-n-nonyl ether, di-n-undecyl ether, di-n-dodecyl ether, n-hexyl-noctyl ether, n-octyl-n-decyl ether, n-decyl-n-undecyl ether, n-undecyl-n-dodecyl ether and n-hexyl-n-undecyl ether, as well as di-tert-butyl ether, di-iso-pentyl ether, di-3-ethyldecyl ether, tert-butyl-n-octyl ether, isopentyl-n-octyl ether and 2-methyl-pentyl-n-octyl. Preferred compounds are 1,3-di-(2-ethylhexyl)-cyclohexane and di-n-octyl ether, commercially available under the trade names Cetiol® S and Cetiol® 0E respectively.

[0137] The hair oil according to the invention may also contain partial glycerides of fatty acids, i.e. monoglycerides, diglycerides and their industrial mixtures, as an additional constituent. With the use of technical products, small amounts of triglycerides may still be present for manufacturing reasons. The partial glycerides preferably correspond to the following formula,

[0138] [Chem.4] CH^fCHgCHgO^FT ÇHOÇCHgCHgCW CHsOtCHsCHaO^R3

[0139] wherein R1, R2 and R3 independently of each other represent hydrogen or a linear or branched, saturated and / or unsaturated acyl group having 6 to 22, preferably 12 to 18 carbon atoms, provided that at least one of these groups represents an acyl group and that at least these groups represents hydrogen. The sum (m+n+q) is equal to 0 or numbers from 1 to 100, preferably 0 or numbers from 5 to 25. R1 preferably represents an acyl group and R2 and R3 preferably represent hydrogen, and the sum (m+n+q) is 0.Typical examples are mono and / or diglycerides based on caproic acid, caprylic acid, 2-ethylhexane acid, capric acid, lauric acid, isotridecanic acid, myristinic acid, palmitic acid, palmitoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petroselinic acid, linoleic acid, linolenic acid, elaeostearic acid, arachidic acid, gadoleic acid, . behenic acid and erucic acid, as well as industrial mixtures thereof. Oleic acid monoglycerides are preferably used.

[0140] Other suitable active ingredients, adjuvants and additives are, in particular, additional care substances. The agent may contain, for example, at least one protein hydrolyzate and / or a derivative thereof as a care substance. Protein hydrolyzates are product mixtures which are obtained by acid-catalyzed, base-catalyzed or enzymatically catalyzed protein degradation. According to the invention, the term "protein hydrolyzates" also refers to total hydrolyzates and individual amino acids and their derivatives as well as mixtures of different amino acids. The molecular weight of the protein hydrolyzates usable according to the invention is between 75, the molecular weight of glycine, and 200,000 daltons, and the molecular weight is preferably 75 to 50,000 daltons and very particularly preferably 75 to 20,000 daltons.

[0141] The hair oils according to the invention may also contain at least one oil-based plant extract as a care substance, but also monosaccharides or oligosaccharides and / or lipids.

[0142] The hair oils described herein may also comprise a fragrance. Suitably, a fragrance is included in an amount ranging from 0.1 to 3% by weight, preferably from 0.25 to 2% by weight based on the weight of the hair oil.

[0143] The hair oil described herein may have any viscosity that makes it suitable for dispensing from the package to the user's hand. The viscosity of the hair oil described herein may be measured in centipoise (cps). The hair oil described herein may have a viscosity ranging from about 0.8 cps to about 500,000 cps.

[0144] In one example, a hair oil as described herein is provided as a dispensable liquid having a viscosity ranging from about 300 to about 10,000 cps, such as from about 500 cps to about 7,500 cps.

[0145] Method

[0146] The present invention also provides a method of using a hair oil according to the invention. The method comprises applying the hair oil described herein to the hair. The method comprises dispensing the hair oil described herein onto the user's hand, and from the hand onto the hair. The method may further comprise rubbing the hair. The method may comprise the user spreading the hair oil in their hand or hands prior to application to the hair.

[0147] The method of using a hair oil described herein may also include additional optional steps. In one example, such steps may include air drying the hair, drying the hair using heat, styling the hair and any other suitable step known to those skilled in the art in the field of hair treatment.

[0148] The invention may be characterized by the following numbered statements.

[0149] 1. Hair oil comprising - relative to the total weight of the hair oil -

[0150] a) 0.5 to 20% by weight of at least one dimethiconol,

[0151] b) 1 to 65% by weight of at least one first silicone having a viscosity < 50 cSt at 25°C,

[0152] c) 1 to 40% by weight of at least one second silicone having a viscosity > 10,000 cSt at 25°C,

[0153] d) 25 to 90% by weight of at least one solvent for one or more of components a), b), c), chosen from

[0154] - linear alkanes C6 to C18,

[0155] - ester oils,

[0156] - C2 to C6 alcohols,

[0157] - or mixtures thereof.

[0158] 2. Hair oil according to declaration 1, wherein the total quantity of the or each dimethiconol is between 1 and 17.5% by weight, relative to the total weight of the hair oil.

[0159] 3. Hair oil according to one of the preceding statements, wherein the quantity total of the or each dimethiconol is between 1.5 and 15% by weight relative to the total weight of the hair oil.

[0160] 4. Hair oil according to one of the preceding statements, wherein the or each silicone b) is chosen from polydialkylsiloxanes having a viscosity < 25 cSt at 25°C.

[0161] 5. Hair oil according to one of the preceding statements, wherein the or each silicone b) is chosen from polydialkylsiloxanes having a viscosity < 10 cSt at 25°C.

[0162] 6. Hair oil according to one of the preceding statements, wherein the quantity total of the or each silicone b) is between 2 and 60% by weight, relative to the total weight of the hair oil.

[0163] 7. Hair oil according to one of the preceding statements, wherein the quantity total of the or each silicone b) is between 3 and 55% by weight, relative to the total weight of the hair oil.

[0164] 8. Hair oil according to one of the preceding statements, wherein the or each silicone c) is chosen from polydialkylsiloxanes having a viscosity > 25,000 cSt at 25°C.

[0165] 9. Hair oil according to one of the preceding statements, wherein the or each silicone c) is chosen from polydialkylsiloxanes having a viscosity > 50,000 cSt at 25°C.

[0166] 10. Hair oil according to one of the preceding statements, wherein the quantity total of the or each silicone c) is between 2 and 30% by weight, relative to the total weight of the hair oil.

[0167] 11. Hair oil according to one of the preceding statements, wherein the quantity total of the or each silicone c) is between 3 and 25% by weight, relative to the total weight of the hair oil.

[0168] 12. Hair oil according to one of the preceding statements, wherein the quantity total of the or each solvent d) is between 30 and 90% by weight, relative to the total weight of the hair oil.

[0169] 13. Hair oil according to one of the preceding statements, wherein the quantity total of the or each solvent d) is between 35 and 90% by weight, relative to the total weight of the hair oil.

[0170] 14. Hair oil according to one of the preceding statements, wherein the or each solvent d) is chosen from undecane, dodecane, tridecane, tertadecane, pentadecane and mixtures thereof.

[0171] 15. Hair oil according to one of statements 1 to 13, wherein the or each solvent d) is chosen from esters of C6 to C30 fatty acids with C2 to C30 alcohols, diols or polyols.

[0172] 16. Hair oil according to one of the statements 1 to 13 or 15, wherein the or each solvent (d) comprises or consists of coco caprylate.

[0173] 17. Hair oil according to one of the statements 1 to 13 or 15, wherein the or each solvent (d) comprises or consists of coco caprylate / caprate.

[0174] 18. Hair oil according to one of the statements 1 to 13 or 15, wherein the or each solvent (d) comprises or consists of caprylic / capric triglycerides.

[0175] 19. Hair oil according to one of the statements 1 to 13 or 15, wherein the or each solvent (d) comprises or consists of isopropyl myristate.

[0176] 20. Hair oil according to one of the statements 1 to 13 or 15, wherein the or each solvent d) is chosen from ethanol, propanol, isopropanol, butanol, hexanol, 1,2-propylene glycol, dipropylene glycol, glycerol, diglycerol and mixtures thereof.

[0177] 21. Hair oil according to one of the statements 1 to 13 or 20, wherein the or each solvent (d) comprises ethanol or consists of ethanol.

[0178] 22. Hair oil according to one of the preceding statements, which is substantially free from cyclic silicones.

[0179] 23. Hair oil according to one of the preceding statements, which is substantially free from cyclomethicones D3, D4, D5, D6.

[0180] 24. Hair oil according to one of the preceding statements, which is substantially free of water.

[0181] 25. Hair oil according to one of the preceding declarations, further containing 0.1 to 10% by weight of at least one natural oil (based on the total weight of the hair oil).

[0182] 26. Hair oil according to one of the preceding declarations, further containing 0.1 to 10% by weight of Ricinus Communis (Castor) Seed Oil, Crab Seed Oil, Amaranth Seed Oil, Apricot Kernel Oil, Argan Oil, Avocado Oil, Babassu Oil, Cottonseed Oil, Borage Seed Oil, Camelina Oil, Safflower Oil, Peanut Oil, Pomegranate Seed Oil, Grapefruit Seed Oil, Hemp Seed Oil, Hazelnut Oil, Elderberry Seed Oil, Blackcurrant Seed Oil, Jojoba Oil, Cocoa Butter, Linseed Oil, Macadamia Nut Oil, Corn Germ Oil, Almond Oil, Marula Oil, Evening Primrose Oil, Olive Oil, Orange Oil, Palm Oil, Peach Kernel Oil, Rapeseed Oil, Rice Bran Oil, Sea Buckthorn Pulp Oil, Sea Buckthorn Kernel Oil, sesame oil, shea butter, soybean oil, sunflower oil, grapeseed oil, walnut oil, wheat germ oil, wild rose oil, liquid portions of coconut oil and mixtures thereof.

[0183] 27. Hair oil according to one of the preceding declarations, further containing 0.1 to 20% by weight of at least one fatty alcohol (relative to the total weight of the hair oil).

[0184] 28. Hair oil according to one of the preceding declarations, further containing 0.1 to 20% by weight of caproic alcohol, caprylic alcohol, 2-ethylhexyl alcohol, capric alcohol, lauryl alcohol, isotridecyl alcohol, myristyl alcohol, cetyl alcohol, palmoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, linolyl alcohol, li-nolenic alcohol, elaeostearyl alcohol, arachyl alcohol, gadoleyl alcohol, be-henyl alcohol, erucyl alcohol, brassidyl alcohol, and mixtures thereof.

[0185] 29. Hair oil according to one of the preceding declarations, further containing 0.001 to 1% by weight of one or more antioxidants.

[0186] 30. Hair oil according to one of the preceding declarations, further containing 0.001 to 1% by weight of vitamin E acetate, beta-carotene and / or their mixtures.

[0187] 31. Cosmetic product comprising the hair oil according to one of the pre-declarations previous.

[0188] 32. Cosmetic product according to declaration 29, wherein the product comprises a pump dispenser.

[0189] 33. Cosmetic product according to declaration 29, wherein the product comprises a pipette.

[0190] 34. Cosmetic product according to declaration 29, wherein the product comprises a droplet insert.

[0191] 35. Use of a hair oil or a cosmetic product according to one of the de previous statements for the care of hair fibers.

[0192] 36. Use according to declaration 35 to improve the feel of the hair, the detangling and ease of combing wet and dry hair and to increase hair shine.

[0193] 37. Method of using a hair oil according to one of statements 1 to 30 or of a cosmetic product according to one of statements 31 to 34, the method comprising applying the hair oil to the hair.

[0194] 38. The method of claim 37, wherein the application comprises the dis distributing hair oil to the user's hand, followed by applying the cosmetic agent from the user's hand to the hair.

[0195] Examples:

[0196] All quantities given are by weight. The following hair oils were prepared using known manufacturing processes.

[0197] [Tableauxl] 1 2 3 4 5 Dowsil®1 1508 5-60 5-60 5-20 30-60 5-60 Dimethicone 5 cSt 3-40 3-40 3-20 3-20 3-40 Xiameter PMX-200 ®2 2 cSt 1-20 1-20 Dimethicone 100,000 cSt 3-30 3-30 3-30 3-20 3-30 Parafai®3 12 25-80 25-80 30-60 30-60 25-80 Avocado Oil 0-10 0-10 0-10 Fatty Alcohol* 0-10 0-10 Tocopheryl Acetate 0-10 0-10 0-10

[0198] * Lauryl alcohol and / or myristyl alcohol

[0199] [Tables2] 6 7 8 9 10 Dowsil®1 1508 3-30 3-30 3-30 3-30 3-30 Dimethicone 5 cSt 3-40 3-40 3-40 3-40 3-40 Dimethicone 60,000 cSt 10-30 10-30 10-30 10-30 10-30 Cetiol®4 C5 30-70 Cetiol®5 CC 30-70 Myritol®6 318 30-70 Isopropyl Myristate 30-70 Ethanol 30-70 Avocado Oil 0-10 0-10 0-10 0-10 0-10 Fatty Alcohol* 0-10 0-10 0-10 0-10 0-10 Tocopheryl acetate 0-10 0-10 0-10 0-10 0-10

[0200] * Lauryl alcohol and / or myristyl alcohol

[0201] The following commercial products were used in the examples:

[0202] 01 INCI Name: C13-15 Alkanes and Dimethiconol (Dow)

[0203] ®2 INCI name: Dimethicone, 2 cSt (Dow)

[0204] ®3 INCI Name: Dodecanes (97%) (Sasol)

[0205] ®4 INCI Name: Coco-Caprylate (BASF)

[0206] ®5 INCI Name: Dicaprylyl Carbonate (BASF)

[0207] ®6 INCI Name: Caprylic / Capric Triglyceride (BASF)

[0208] Examples of hair oils have been found to be beneficial in terms of silky feel of hair, increased shine and softness, suppleness, ease of combing and useful detangling.

[0209] In addition, the hair oils according to the invention allow for deep care of already stressed hair fibers, detangling them and making them easy to comb.

[0210] The hair oils according to the invention are also particularly advantageous with regard to their good distributivity in and along the hair fibers, which is ensured by the optimal consistency of the product.

[0211] It is understood that the invention may be modified within the scope of protection.

Claims

Claims

1. Hair oil comprising - relative to the total weight of the hair oil - a) 0.5 to 20% by weight of at least one dimethiconol, b) 1 to 65% by weight of at least one first silicone having a viscosity < 50 cSt at 25°C, c) 1 to 40% by weight of at least one second silicone having a viscosity > 10,000 cSt at 25°C, d) 25 to 90% by weight of at least one solvent for one or more of components a), b), c), selected from - linear C6 to C18 alkanes, - ester oils, - C2 to C6 alcohols, - or mixtures thereof.

2. Hair oil according to one of the preceding claims, in which the or each silicone b) is chosen from polydialkyl-siloxanes having a viscosity < 25 cSt at 25°C.

3. Hair oil according to one of the preceding claims, in which the or each silicone c) is chosen from polydialkyl-siloxanes having a viscosity > 25,000 cSt at 25°C.

4. Hair oil according to one of the preceding claims, in which the or each solvent d) is chosen from undecane, dodecane, tridecane, tertadecane, pentadecane and mixtures thereof.

5. Hair oil according to one of the preceding claims, in which the or each solvent d) is chosen from esters of C6 to C30 fatty acids with C2 to C30 alcohols, diols or polyols.

6. Hair oil according to one of claims 1 to 4, in which the or each solvent d) is chosen from ethanol, propanol, isopropanol, butanol, hexanol, 1,2-propylene glycol, dipropylene glycol, glycerol, diglycerol and mixtures thereof.

7. A hair oil according to any preceding claim, which is substantially free of cyclic silicones.

8. A hair oil according to any preceding claim, which is substantially free of water.

9. Use of a hair oil according to one of the preceding claims for the care of hair fibers.

10. A method of using a hair oil according to one of the claims- indications 1 to 8, the method comprising applying the hair oil to the hair.