Shaving foam containing glycolipids

Abstract

The present invention relates to shaving foams.

Description

[0001] Beiersdorf Aktiengesellschaft Hamburg

[0002] Shaving foam containing glycolipids

[0003] The present invention relates to shaving foams containing glycolipids.

[0004] A person's outward appearance can be influenced and enhanced through the use of cosmetic products. Regular use of cleansing and care products ensures that people feel attractive, beautiful, and comfortable in their surroundings, and radiate this outwards.

[0005] Maintaining one's appearance includes not only skincare but also body hair care. In particular, the removal of body hair, especially facial hair, contributes to one's overall look. The term "shaving" refers specifically to the cutting of body hair directly at the skin's surface. Shaving practices can be influenced by fashion and cultural preferences. Often, facial hair removal is desired only in certain areas. Furthermore, shaving plays a significant role in hair removal on other parts of the body besides facial hair. It is common practice to remove hair from the legs, underarms, and / or pubic area.

[0006] The shaving process can be done wet or dry. In wet shaving, the hairs are softened before being cut by the razor blade. This minimizes the effort required and prevents unpleasant pulling. Softening the hairs means they absorb water, but first the outer sebum layer of the hair must be removed. Shaving aids are used for this process. These aids come in the form of shaving soaps, creams, gels, or foams. In addition to softening the hairs, shaving aids also care for the shaved skin, allow the razor blade to glide more smoothly, and ensure that the cut hairs are easily removed from the skin.

[0007] Shaving foams, in particular, are considered one of the most popular shaving aids among customers for preparing their hair before shaving. The foam is easy to dispense and can be applied directly to the area to be shaved. This makes application simpler than with products that first need to be lathered manually. Furthermore, customers associate the application of shaving foam with a pleasant feeling on the skin. It is also advantageous for customers to be able to apply the same foam consistency every time, making it easier to guide the razor blade during the subsequent shaving routine.

[0008] Customers continue to prefer shaving aids that allow a razor blade, usually made of metal, to glide smoothly over the skin. This results in fewer shaving cuts and skin irritations, and makes shaving a smoother experience. Particularly good gliding properties are achieved when friction between the razor and skin is reduced. The gliding properties of a shaving foam can be determined by its lubricity rating. It is important that a cosmetic preparation in the form of a shaving foam has a lubricity that reduces friction between the surface and the razor, but not so much that it becomes too slippery and causes the razor to slide.

[0009] The glide of a shaving aid depends primarily on the amount of surfactants used. It is important to avoid increasing the proportion of surfactants in cosmetic products, especially cosmetic foams, as this could lead to reduced gentleness, skin irritation, and redness. This is particularly important to avoid with shaving aids, since the use of razor blades already puts increased stress on the skin. Therefore, there is a need for cosmetic products, especially shaving aids, that produce a stable lather and improved glide under conventional use without increasing the surfactant content.

[0010] Consumers increasingly prefer cleaning products based on sustainable ingredients, which is why biosurfactants are being used more frequently. Biosurfactants are defined as surfactants that can be derived from renewable resources and are also biodegradable. The manufacturing process can thus be sustainable, for example, through fermentation. Biosurfactants are considered mild surfactants. Known biosurfactants include glycolipids, lipopeptides, fatty acids, and phospholipids.

[0011] Rhamnolipids are a class of glycolipids produced by biosynthesis in bacteria of the genus Pseudomonas aeruginosa, among other organisms. They can be purchased, for example, under the trade name Rheance® one from Evonik. Rhamnolipids can be described by the following general structural formula (I):

[0012] Where m = 1 or 0,

[0013] N = 1 or 0,

[0014] R1 and R2 are independently identical or different organic residues with 2 to 30, preferably 5 to 24, carbon atoms, in particular a substituted or unsubstituted, branched or unbranched alkyl residue, which may also be unsaturated, wherein the alkyl residue is preferably a linear saturated alkyl residue with 6 to 20 carbon atoms. Salts of these compounds are also included according to the invention. The term "di-rhamnolipid" refers to compounds of the above formula or their salts in which n = 1. Similarly, "mono-rhamnolipid" refers to compounds of the above formula or their salts in which n = 0.

[0015] Rhamnolipids are, by definition, not anionic surfactants within the meaning of this invention.

[0016] The state of the art is known in EP 2786742 A1, which discloses the use of rhamnolipids in cosmetic products.

[0017] Another class of glycolipids are sophorolipids. They can be produced by fermentation of yeasts of the Candida and Torulopsis types, as well as Torulopsis magnoliae, Candida bombicola, Candida apicola, or Candida bogoriensis. The essential glucid of extracellular sophorolipids is sophorose (2'-O-β-D-glucopyranosyl-β-D-glucopyranose). This sugar can be acetylated at the 6' and 6' positions and is linked to a fatty acid hydroxyl group at the ω or ω-1 position. The lipid fraction of sophorolipids is composed of several hydroxy fatty acids. They can be purchased, for example, from Evonik under the trade name SOPHANCE LA-A.

[0018] The state of the art is known in DE 69531870 T2, which discloses the use of sophorolipids in cosmetic products.

[0019] Consequently, the object of the present invention was to provide cosmetic products which have an increased gliding ability of a metal razor blade on a surface, in particular the skin, without increasing the surfactant content.

[0020] Conventional cosmetic shaving aids are known, among other things, from EP 1992323 A1. However, the disclosed preparations could not provide any indication of the present invention.

[0021] Surprisingly for those skilled in the art, it has now been found that the problem arising from the sliding ability of a metal razor blade on a surface, in particular the skin, could be solved by the present invention.

[0022] The present invention relates to a cosmetic product comprising a) a pressure vessel with a dispensing valve, b) a cosmetic preparation comprising an O / W emulsion comprising glycolipids, c) at least one propellant foaming and / or dispensing the O / W emulsion, characterized in that b) and c) are contained in a).

[0023] A further object of the present invention is a cosmetic product comprising a) a pressure vessel with a dispensing valve, b) a cosmetic preparation comprising an O / W emulsion comprising rhamnolipids, in particular mono-, di- or polyrhamnolipids, c) at least one propellant foaming and / or dispensing the O / W emulsion, characterized in that b) and c) are included in a). A further object of the present invention is a cosmetic product comprising a) a pressure vessel with a dispensing valve, b) a cosmetic preparation comprising an O / W emulsion comprising sophorolipides, c) at least one propellant foaming and / or dispensing the O / W emulsion, characterized in that b) and c) are included in a).

[0024] Another object of the invention is an aerosol can with a dispensing valve, which contains the cosmetic product according to the invention.

[0025] Another object of the invention is the use of the cosmetic product according to the invention to provide a foam for application to the skin.

[0026] Another aspect of the invention is the use of the cosmetic product according to the invention for providing a shaving foam. When such a foam is used as shaving foam, it exhibits particularly good gliding properties. Therefore, such foams provide a more pleasant shaving experience.

[0027] Another object of the invention is a method for applying the cosmetic product according to the invention to increase the gliding ability of a razor blade on human skin, characterized in that in a first step the cosmetic preparation is mixed with the propellant and removed from the pressure vessel, in a second step the resulting foam is applied to the skin moistened with water, and in a third step the hairs in the area of ​​skin where the cosmetic product has been applied are shaved with a metal razor blade.

[0028] Surprisingly, the combination of the invention or the cosmetic product according to the invention showed a significant increase in the glide values, with a simultaneously creamy foam with good stability, without increasing the content of surfactants or emulsifiers.

[0029] Where sliding coefficients are specified in this disclosure, all values ​​refer to measurements under standard conditions. The measurement was performed using a universal testing machine (Zwick / Roell BZ 1.0 / TH1S [Ulm, Germany]) based on a peel test. The testing machine is equipped with a load cell (maximum rated load 10 N according to EN ISO 7500-1 = Class 1) with an adapter specifically manufactured for sliding coefficient measurement. This adapter is milled from a 250 mm long polyoxymethylene rail into a groove 7 mm deep and 23 mm wide. During the measurement, the forces are measured when a trapezoidal aluminum sliding element (16 g), having a cutting edge, and an additional weight (30 g) are pulled through the milled groove in the rail. The sliding coefficient is then calculated from the measured average force over the measuring path.

[0030] For the measurement, the product under investigation was mixed with water (37 °C; water hardness 1.5 to 2.5 mmol / L CaCO3 or 8.4 to 14.0 dH) in a 2:1 ratio, and 0.5 g of the mixture was evenly distributed on the rail. The aluminum sliding element was then placed on the rail and connected to the load cell via a deflection pin (d=4 mm) with a guide groove and a 0.5 mm thick nylon cord. The sliding measurement was then started. The sliding element was pulled through the rail at a test speed of 160 mm / min over a measuring distance of 110 mm, and the sliding coefficient was determined over this period. The sliding coefficient was determined in nine measurements for each preparation, with the preparation being reapplied each time. The zero value was measured against water. The sliding coefficient is calculated using the following formula (I):

[0031] Float value = 100 * (FN - FM) / FN (I)

[0032] Where FN is the zero value (measured with water) and FM is the measured frictional force with the product applied.

[0033] Where weight percentages (wt%) are given below without reference to a specific composition or mixture, these percentages always refer to the total weight of the cosmetic cleansing preparation. Where ratios of components / substances / groups of substances are disclosed below, these ratios refer to the weight ratios of the components / substances / groups of substances mentioned.

[0034] The terms "according to the invention," "advantageous according to the invention," "advantageous in the sense of the present invention," etc., always refer, within the scope of this disclosure, to the preparation according to the invention, the use according to the invention, and the process according to the invention. Unless otherwise stated, all experiments were carried out under standard conditions. The term "standard conditions" means 22°C, 1013 hPa, and a relative humidity of 55%.

[0035] Emulsifiers are defined as all substances listed as "emulsifying agents" in the International Cosmetic Ingredient Dictionary and Handbook, Thirteenth Edition 2010 (ISBN 1-882621-47-6). Surfactants are defined as all substances listed as "surfactants" in the International Cosmetic Ingredient Dictionary and Handbook, Thirteenth Edition 2010 (ISBN 1-882621-47-6).

[0036] Where weight percentage ranges for the components of the preparation are specified below, the disclosure of the present application also includes all individual values ​​in steps of 0.1 wt.% within these weight percentage ranges.

[0037] The term “free from” is understood below to mean that the respective raw material or composition is less than 0.1 wt.%, preferably less than 0.01 wt.%, in particular 0 wt.%, based on the total weight of the preparation.

[0038] When the term skin is used, it preferably refers to human skin.

[0039] When the term hair is used, it preferably refers to human hair.

[0040] According to the invention, the cosmetic product is characterized in that it contains glycolipids, in particular rhamnolipids and / or sophorolipids. According to the invention, it is preferred if glycolipids, in particular rhamnolipids and / or sophorolipids, are present in a quantity of 0.05 to 4.5 wt.%, preferably 0.1 wt.% to 3.0 wt.%, and particularly preferably 0.1 to 2.8 wt.%, based on the total weight of the preparation.

[0041] In a preferred embodiment, the cosmetic product is characterized in that it contains rhamnolipids, in particular mono-, di-, or polyrhamnolipids. It is further advantageous if the total proportion of these rhamnolipids is 0.05 to 4.5 wt.%, preferably 0.1 wt.% to 3.0 wt.%, and particularly preferably 0.1 to 2.8 wt.%, based on the total weight of the preparation. In another preferred embodiment, the cosmetic product is characterized in that it contains sophorolipids. It is further advantageous if the total proportion of these sophorolipids is 0.05 to 4.5 wt.%, preferably 0.1 wt.% to 3.0 wt.%, and particularly preferably 0.1 to 2.8 wt.%, based on the total weight of the preparation.

[0042] It is advantageous within the meaning of the present invention if the cosmetic products contain at least one fatty acid. The at least one fatty acid is preferably selected from fatty acids with 6 to 22 carbon atoms and may include both saturated and unsaturated fatty acids. The fatty acids may be fatty acids with a specific number of carbon atoms or mixtures of fatty acids, which may be derived from natural sources such as coconut oil, palm oil, soybean oil, and / or beef tallow. The at least one fatty acid is preferably selected from the group consisting of palmitic acid (INCI: Palmitic Acid), stearic acid (INCI: Stearic Acid), myristic acid (INCI: Myristic Acid), arachidic acid (INCI: Arachidic Acid), oleic acid (INCI: Oleic Acid), and / or lauric acid (INCI: Laurie Acid).

[0043] In one embodiment, which is particularly preferred, the at least one fatty acid is a mixture of fatty acids, comprising palmitic acid (INCI: Palmitic Acid), stearic acid (INCI: Stearic Acid), myristic acid (INCI: Myristic Acid), arachidic acid (INCI: Arachidic Acid), oleic acid (INCI: Oleic Acid) and / or lauric acid (INCI: Laurie Acid).

[0044] In accordance with the invention, it is advantageous if the total proportion of the fatty acids contained is from 0.01 to 20.0 wt.%, preferably from 1.0 wt.% to 10.0 wt.% and particularly preferably from 4.0 to 7.0 wt.% based on the total weight of the cosmetic preparation.

[0045] In a preferred embodiment, the cosmetic product contains palmitic acid (INCI: Palmitic Acid). If palmitic acid (INCI: Palmitic Acid) is included, it is advantageous if the total content of palmitic acid (INCI: Palmitic Acid) is from 0.01 to 5.0 wt.%, preferably from 1.0 to 4.0 wt.%, and particularly preferably from 2.0 to 3.0 wt.%, based on the total weight of the cosmetic preparation.

[0046] In a preferred embodiment, the cosmetic product contains stearic acid (INCI: Stearic Acid). If palmitic acid contains stearic acid (INCI: Stearic Acid), it is advantageous if the total stearic acid content (INCI: Stearic Acid) is from 0.01 to 5.0 wt.%, preferably from 1.0 to 4.0 wt.%, and particularly preferably from 2.0 to 3.0 wt.%, based on the total weight of the cosmetic preparation.

[0047] In a preferred embodiment, the cosmetic product contains myristic acid (INCI: Myristic Acid). If myristic acid (INCI: Myristic Acid) is included, it is advantageous if the total myristic acid (INCI: Myristic Acid) content is from 0.01 to 5.0 wt.%, preferably from 1.0 to 4.0 wt.%, and particularly preferably from 2.0 to 3.0 wt.%, based on the total weight of the cosmetic preparation.

[0048] In a preferred embodiment, the cosmetic product contains arachidic acid (INCI: Arachidic Acid). If arachidic acid (INCI: Arachidic Acid) is included, it is advantageous if the total arachidic acid (INCI: Arachidic Acid) content is 0.01 to 5.0 wt.%, preferably 1.0 to 4.0 wt.%, and particularly preferably 2.0 to 3.0 wt.%, based on the total weight of the cosmetic preparation.

[0049] In a preferred embodiment, the cosmetic product contains oleic acid (INCI: Oleic Acid). If oleic acid (INCI: Oleic Acid) is included, it is advantageous if the total oleic acid (INCI: Oleic Acid) content is 0.01 to 5.0 wt.%, preferably 1.0 to 4.0 wt.%, and particularly preferably 2.0 to 3.0 wt.%, based on the total weight of the cosmetic preparation.

[0050] In a preferred embodiment, the cosmetic product contains lauric acid (INCI: Laurie Acid). If lauric acid (INCI: Laurie Acid) is included, it is advantageous if the total lauric acid (INCI: Laurie Acid) content is from 0.01 to 5.0 wt.%, preferably from 1.0 to 4.0 wt.%, and particularly preferably from 2.0 to 3.0 wt.%, based on the total weight of the cosmetic preparation.

[0051] Further preferred embodiments of the invention are characterized by the inclusion of coco-caprylate / caprate. If coco-caprylate / caprate is included, it is preferred that the total proportion of coco-caprylate / caprate is 0.1 to 2.0 wt.%, preferably 0.2 to 1.0 wt.%, and particularly preferably 0.3 to 0.8 wt.% based on the total weight of the cosmetic preparation.

[0052] Furthermore, according to the invention, it is advantageous if the cosmetic products contain water in a proportion of 40% to 95% by weight, preferably 60% to 90% by weight, and particularly preferably 75% to 88% by weight, based on the total weight of the cosmetic preparation. Further preferred embodiments of the invention are characterized by the inclusion of triethanolamines. If triethanolamines are included, it is preferred if the total proportion of triethanolamines is 1.0 to 20.0% by weight, preferably 2.0 to 10.0% by weight, and particularly preferably 2.0 to 5.0% by weight, based on the total weight of the cosmetic preparation.

[0053] Preferred embodiments of the invention are characterized in that they contain one or more emulsifiers selected from the group of non-ionic emulsifiers, specifically from the group of glyceryl oleates and / or alkyl polyglycosides, in particular lauryl glucosides, caprylyl glucosides, capryl glucosides, decyl glucosides and / or coco-glucosides, and especially preferably decyl glucosides and / or coco-glucosides. From the aforementioned group, decyl glucosides and / or coco-glucosides are selected as the most preferred non-ionic emulsifiers.

[0054] If the cosmetic product according to the invention contains alkyl polyglycosides, in particular lauryl glucoside, caprylyl glucoside, capryl glucoside, decyl glucoside and / or coco-glucoside, it is preferred if the total proportion of the alkyl polyglycosides is from 1.0 to 6.0 wt.%, preferably from 2.0 wt.% to 4.0 wt.% and particularly preferably from 2.2 to 3.0 wt.%, based on the total weight of the cosmetic preparation.

[0055] If the product according to the invention contains decyl glucoside, it is preferred according to the invention if the total proportion of decyl glucoside is 1.0 to 6.0 wt.%, preferably 2.0 wt.% to 4.0 wt.% and particularly preferably 2.2 to 3.0 wt.% based on the total weight of the cosmetic preparation.

[0056] In accordance with the invention, it is advantageous if the total proportion of the non-ionic emulsifiers contained is 1.0 to 6.0 wt.%, preferably 2.0 wt.% to 4.0 wt.% and particularly preferably 2.2 to 3.0 wt.% based on the total weight of the cosmetic preparation.

[0057] Further preferred embodiments of the invention are characterized by the inclusion of hydroxypropyl methylcellulose. If hydroxypropyl methylcellulose is included, it is preferred that the total proportion of hydroxypropyl methylcellulose is 0.01 to 2.0 wt.%, preferably 0.05 to 1.0 wt.%, and particularly preferably 0.1 to 0.5 wt.% based on the total weight of the cosmetic preparation. It is advantageous within the meaning of the present invention if the cosmetic product contains at least one preservative. The at least one preservative can advantageously be selected from the group consisting of phenoxyethanol (INCI: Phenoxyethanol), sodium benzoate (INCI: Sodium Benzoate), piroctone olamine (INCI: Piroctone Olamine), and / or benzyl alcohol (INCI: Benzyl Alcohol). Advantageously, the proportion of the at least one preservative in the preparation according to the invention is 0.01 to 0.9 wt.%, preferably 0.03 to 0.5 wt.%.-% and in particular preferably 0.05 to 0.2 wt% based on the total weight of the cosmetic preparation.

[0058] In a preferred embodiment, the cosmetic product contains piroctone olamine as a preservative. If piroctone olamine is included, it is preferred that the total proportion of piroctone olamine is 0.01 to 0.9 wt.%, preferably 0.03 to 0.5 wt.%, and particularly preferably 0.05 to 0.2 wt.% based on the total weight of the cosmetic preparation.

[0059] Furthermore, the cosmetic products according to the invention can contain at least one polyol. A polyol is an organic compound that has more than one hydroxyl group. They can occur in linear or cyclic form.

[0060] Advantageously, at least one polyol is selected from the group consisting of propylene glycol, butylene glycol, hexylene glycol, glycerin, diglycerin, polyethylene glycol, and / or sorbitol. Advantageously, the proportion of at least one polyol in the preparation according to the invention is 1.0 to 6.0 wt.%, preferably 2.0 to 4.0 wt.%, and particularly preferably 2.5 to 3.3 wt.% based on the total weight of the cosmetic preparation.

[0061] In a preferred embodiment, the cosmetic product contains glycerin. If glycerin is included, it is advantageous if the total glycerin content is 1.0 to 6.0 wt.%, preferably 2.0 to 4.0 wt.%, and particularly preferably 2.5 to 3.3 wt.%, based on the total weight of the cosmetic preparation.

[0062] Furthermore, it is advantageous if the O / W emulsion according to the invention comprises one or more active ingredients selected from the group of compounds glycyrrhetinic acid (INCI: Glycyrrhetinic Acid), urea (INCI: Urea), arctiin, alpha-lipoic acid (INCI: Alpha-Lipoic Acid), folic acid (INCI: Folic Acid), phytoene (INCI: Phytoene), D-biotin (INCI: Biotin), coenzyme Q10 (INCI: Ubiquinone), hyaluronic acid (INCI: Hyaluronic Acid), alpha-glucosylrutin, carnitine (INCI: Carnitine), carnosine (INCI: Carnosine), caffeine (INCI: Caffeine), natural and / or synthetic isoflavones (INCI: Isoflavones), glyceryl glucose (INCI: Glyceryl Glucoside), creatine (INCI: Creatine), creatinine (INCI: Creatinine), taurine (INCI: Taurine), ß-alanine (INCI: Beta-Alanine), licochalcone A, panthenol, tocopherol, tocopherol acetate (INCI: Tocopheryl Acetate), vitamin C (INCI: Ascorbic Acid), Glycyrrhiza Inflata Root Extract, Chamomilla Recutita Flower Extract, magnolia extract (INCI: Magnolia Officinalis Bark Extract).

[0063] According to the invention, it is preferred if the cosmetic product or the O / W emulsion according to the invention advantageously has a pH value of 7.0 to 10.0, preferably of 8.0 to 9.5 and particularly preferably of 8.3 to 9.0.

[0064] According to the invention, the cosmetic product contains at least one propellant that foams and / or dispenses the oil-in-water (O / W) emulsion. Propellants are used in cosmetic foams to generate and maintain a foam. By mixing the O / W emulsion with the propellant, a mixture is created that can be stored under pressure in suitable packaging. When the mixture is dispensed through a valve, the propellant expands, thereby generating a foam.

[0065] Advantageous embodiments of the present invention are characterized in that the cosmetic product is formed from 90 to 96 wt.% O / W emulsion and 4 to 10 wt.% propellant. Preferred embodiments of the invention are characterized in that the cosmetic preparation is formed from 94 to 96 wt.% O / W emulsion and 4 to 6 wt.% propellant.

[0066] According to the invention, it is advantageous if a gas or gas mixture of butane, isobutane and / or propane is used as the propellant. The mixing ratio of the gases varies depending on the pressure level, e.g.:

[0067] Pressure rating 2.7 bar: 60% butane, 20% isobutane and 20% propane

[0068] Pressure rating 3.0 bar: 5.3% butane, 79.4% isobutane and 15.3% propane

[0069] Pressure rating 3.5 bar: 5% butane, 72% isobutane and 23% propane. According to the invention, pressure ratings of 2.7 bar, 3.0 bar and 3.5 bar are preferred. The pressure rating of 3.5 bar is particularly preferred.

[0070] Advantageously, according to the invention, the cosmetic product is stored in an aerosol can with a dispensing valve and can be applied directly from it. During application, the inventive mixture of oil-in-water emulsion and propellant is thoroughly mixed by shaking and can then be dispensed via the valve and applied to the skin. The usual aerosol can systems known for cosmetic purposes can be used as aerosol cans with a dispensing valve.

[0071] Advantageously, the pressure vessel with dispensing valve has a suitable spray or foaming head that enables the dispensing of foams. These are commercially available. Furthermore, the dispensing valve is characterized in that it is a type I valve. The pressure vessel with dispensing valve also advantageously has a suitable riser tube through which the mixture of oil-in-water emulsion and propellant rises to the dispensing valve when the foaming mechanism is activated.

[0072] Furthermore, the foam head of the pressure vessel advantageously has an actuating surface for triggering the dispensing and the foaming mechanism.

[0073] The material of the pressure vessel advantageously contains aluminum.

[0074] According to the invention, an aerosol can with a dispensing valve containing the cosmetic product, as well as a method for applying a cosmetic product to the skin, is characterized in that the inventive mixture of O / W emulsion and propellant is mixed by shaking, dispensed via the dispensing valve and applied to the skin.

[0075] Furthermore, it is preferred in accordance with the present invention if the preparation is free of PEG derivatives, in particular Laureth-23, PEG-7 Glyceryl Cocoate, PEG-40 Hydrogenated Castor Oil, PEG-7M, PEG-20 Glyceryl Triisostearate, Polysorbate and / or PEG-60 Hydrogenated Castor Oil.

[0076] Furthermore, it is preferred in accordance with the present invention if the preparation is free of sulfate-containing surfactants, in particular sodium laureth sulfate, sodium lauryl sulfate, ammonium lauryl sulfate, MIPA-laureth sulfate and / or ammonium laureth sulfate. It is further preferred if the preparation according to the invention is entirely sulfate-free.

[0077] For the purposes of the present invention, "sulfate-free" means that the respective raw material or composition is present in less than 0.1 wt.%, preferably less than 0.01 wt.%, and in particular 0 wt.%, based on the total weight of the preparation. The values ​​for the lubricity of the preparations according to the invention are determined by the measurement method described above. Advantageously, the preparation according to the invention is characterized in that it has a lubricity of advantageously 45 to 75, preferably 47 to 70, under normal conditions.

[0078] It was surprisingly found that the invention allows for the production of preparations with significantly improved sliding properties, as described above. The use of the invention makes the appearance and application of the preparation considerably more pleasant for the consumer.

[0079] Comparative experiments and examples

[0080] The following examples are intended to illustrate the present invention without limiting it. Unless otherwise stated, all quantities, proportions, and percentages are based on the weight and total quantity or total weight of the cosmetic products.

[0081] The following formulations were prepared for the comparative tests. Formulation Cf. 1 is not according to the invention, while Ex. 1 and Ex. 2 are according to the invention:

[0082] The sliding coefficient was measured as described in the description. The cosmetic products listed above were manufactured and their properties were investigated in a comparative test.

[0083] To measure the gliding properties of the cosmetic products, the lubricity was determined for each preparation. The examples containing glycolipids showed significantly better gliding properties than formulations without glycolipids. Furthermore, it was demonstrated that improved gliding properties were achieved without increasing the surfactant content.

[0084] The following examples are intended to further illustrate the invention without limiting it:

Claims

Patent claims 1. Cosmetic product comprising a) A pressure vessel with a dispensing valve, b) A cosmetic preparation comprising an O / W emulsion comprising glycolipids, c) At least one propellant foaming and / or discharging the O / W emulsion, characterized in that b) and c) are contained in a).

2. Cosmetic product according to claim 1, characterized in that the total proportion of one or more glycolipids is from 0.05 to 4.5 wt.%, preferably of 0.1 wt.% to 3.0 wt.% and particularly preferably 0.1 to 2.8 wt.% based on the total weight of the cosmetic preparation.

3. Cosmetic product according to one of the preceding claims, characterized in that the glycolipids contained are in particular rhamnolipids and / or sophorolipids.

4. Cosmetic product according to one of the preceding claims characterized in that it contains rhamnolipids, in particular mono-, di- or polyrhamnolipids, wherein it is preferred that the total proportion of rhamnolipids is from 0.05 to 4.5 wt.%, preferably from 0.1 wt.% to 3.0 wt.% and particularly preferably from 0.2 to 2.5 wt.% based on the total weight of the cosmetic preparation.

5. Cosmetic product according to one of the preceding claims characterized in that it contains sophorolipids, wherein it is preferred that the total proportion of sophorolipids is from 0.05 to 4.5 wt.%, preferably from 0.1 wt.% to 3.0 wt.% and particularly preferably from 0.1 to 2.8 wt.% based on the total weight of the cosmetic preparation.

6. Cosmetic product according to one of the preceding claims, characterized in that the O / W emulsion contains at least one fatty acid, wherein the at least one fatty acid is selected from fatty acids having 6 to 22 carbon atoms.

7. Cosmetic product according to one of the preceding claims characterized in that it contains at least one fatty acid selected from the group consisting of Palmitic Acid, Stearic Acid, Myristic Acid, Arachidic Acid, Oleic Acid and / or Lauric Acid.

8. Cosmetic product according to one of the preceding claims, characterized in that the total proportion of the fatty acids contained ranges from 0.01 to 20.0 wt.%, preferably from 1.0 wt.% to 10.0 wt.% and particularly preferably from 4.0 to 7.0 wt.% based on the total weight of the cosmetic preparation.

9. Cosmetic product according to one of the preceding claims, characterized in that it contains triethanolamines, wherein it is preferred that the proportion of triethanolamines is from 1.0 to 20.0 wt.%, preferably from 2.0 to 10.0 wt.% and particularly preferably from 2.0 to 5.0 wt.% based on the total weight of the cosmetic preparation.

10. Cosmetic product according to one of the preceding claims, characterized in that the O / W emulsion contains one or more emulsifiers selected from the group consisting of glyceryl oleate and / or alkyl polyglycosides, in particular lauryl glucoside, caprylyl glucoside, capryl glucoside, decyl glucoside and / or coco-glucoside, wherein it is preferred that the proportion of these emulsifiers is from 1.0 to 6.0 wt.%, preferably from 2.0 wt.% to 4.0 wt.% and particularly preferably from 2.2 to 3.0 wt.% based on the total weight of the cosmetic preparation.

11. Cosmetic product according to one of the preceding claims, characterized in that it contains decyl glucosides, wherein it is preferred if the total proportion is 1.0 to 6.0 wt.%, preferably 2.0 wt.% to 4.0 wt.% and particularly preferably 2.2 to 3.0 wt.% based on the total weight of the cosmetic preparation.

12. Cosmetic product according to one of the preceding claims, characterized in that the O / W emulsion contains piroctone olamines, wherein it is preferred if the proportion of piroctone olamines is 0.01 to 0.9 wt.%, preferably 0.03 to 0.5 wt.% and particularly preferably 0.05 to 0.2 wt.% based on the total weight of the cosmetic preparation.

13. Cosmetic product according to one of the preceding claims characterized in that it contains at least one polyol from the group consisting of propylene glycol, butylene glycol, hexylene glycol, glycerin, diglycerin, and / or sorbitol, preferably glycerin.

14. Cosmetic product according to one of the preceding claims characterized in that it contains glycerin, wherein it is advantageous if the proportion of glycerin is 1.0 to 6.0 wt.%, preferably 2.0 to 4.0 wt.% and particularly preferably 2.5 to 3.3 wt.% based on the total weight of the cosmetic preparation.

15. Cosmetic product according to one of the preceding claims characterized in that the pH value of the O / W emulsion is 7.0 to 10.0, preferably 8.0 to 9.5 and particularly preferably 8.3 to 9.

0.

16. Cosmetic product according to one of the preceding claims, characterized in that the pressure vessel of the cosmetic product is filled with 90 wt. % to 96 wt. % O / W emulsion and 4 wt. % to 10 wt. % propellant, based on the total weight of all ingredients contained in the pressure vessel.

17. Cosmetic product according to one of the preceding claims, characterized in that butane, isobutane and / or propane are selected as the propellant.

18. Cosmetic product according to one of the preceding claims, characterized in that it is contained in an aerosol can with a dispensing valve.

19. Aerosol can with dispensing valve containing a cosmetic product according to any one of claims 1 to 18.

20. Use of a cosmetic product according to any one of claims 1 to 18 to increase the gliding properties of a razor blade on the skin.

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