PL246158B1 - Intimate hygiene fluid - Google Patents

Abstract

The subject of the application is an intimate hygiene fluid which contains as a care ingredient from 0.01% to 85% by weight of an aqueous extract of grape pomace obtained by micellar extraction of ground red grape pomace in an extraction solution which contains as exclusive ingredients water, decyl glucoside and a mixture of benzyl alcohol, benzoic acid, dehydroacetic acid and tocopherol. After mixing the grape pomace extract and the remaining ingredients, the intimate hygiene fluid contains from 29.5% to 99.499% by weight of water, from 0.001% to 30% by weight of decyl glucoside and from 0.01% to 1.5% by weight of a mixture of benzyl alcohol, benzoic acid, dehydroacetic acid and tocopherol, originating at least in part from the extract. Additionally, the intimate hygiene fluid contains from 0% to 5% by weight of alkylamidopropyl betaine obtained from coconut oil fatty acids and from 0.01% to 1.5% by weight of citric acid.

Description

Description of the invention

The subject of the invention is an intimate hygiene fluid used for washing mucous membranes and intimate areas.

Preparations for washing mucous membranes and intimate areas commonly known from the prior art contain 0.1 to 75% by weight of surfactants, 0.1 to 20% by weight of a solubilizer and/or hydrotrope, 0.1 to 10% by weight of moisturizing and/or lubricating substances, 0.5 to 5% by weight of sequestrants, 0.05 to 3% by weight of fragrance compositions, 0.01 to 0.5% by weight of preservatives, 0.1 to 4% of viscosity modifiers and 5 to 85% by weight of water.

As surfactants, compounds preferably from the groups of nonionic and/or anionic and/or amphoteric surfactants are used. As anionic surfactants, compounds from the groups of alkyl ether sulfates, alkyl sulfates, alkyl sulfonates, soaps, alkyl phosphates, alkyl sulfosuccinates or similar compounds slightly modified by attaching ethylene oxide and/or propylene oxide to them are used, as nonionic surfactants, nonionic surfactants from the groups of ethylene oxide adducts and/or adducts of a mixture of ethylene and propylene oxides to compounds containing in their structure an alkyl chain having a length of 8 to 22 carbon atoms, preferably ethoxylated and/or ethoxylated-propylene ethoxylated: fatty alcohols, fatty acids, esters of higher fatty acids, vegetable oils, sorbitan esters; alkyl polyglucosides; alkanolamides; while amphoteric surfactants used are compounds from the alkyl betaine and/or alkylamido betaine groups or similar compounds slightly modified by attaching ethylene oxide and/or propylene oxide to them.

Ethyl alcohol and/or isopropyl alcohol and/or propylene glycol and/or butylene glycol and/or pentylene glycol and/or hexylene glycol butyl ether and/or butylene glycol propyl ether are used as solvents, and sodium cumenesulfonate and/or sodium toluenesulfonate and/or urea and/or phosphoric acid esters are used as hydrotropes.

Glycerin, sorbitol, glycols, polyglycols, amino acids, fatty derivatives or lanolin derivatives are used as moisturizing and/or lubricating substances.

Sequestrants are usually compounds derived from citric acid and/or phosphoric acid and/or lactic acid and/or gluconic acid and/or edetic acid.

Viscosity modifiers used include compounds from the group of inorganic salts, mainly sodium chloride and/or potassium chloride, polymeric compounds from the group of cellulose derivatives, mainly carboxymethylcellulose and/or hydroxyethylcellulose and/or hydroxypropylcellulose and/or methylcellulose and/or hydroxypropylmethylcellulose, polymeric compounds from the group of polycarboxylates, mainly sodium polyacrylate or similar slightly chemically modified compounds, compounds from the group of minerals, mainly bentonites and/or hectorites and/or montmorillonites.

Manufacturing traditional intimate hygiene products usually involves mixing all the components.

The state of the art includes preparations for washing mucous membranes and intimate areas that are based on ingredients of natural origin.

Here, as an example, according to the description RU2011148879A, a natural intimate hygiene product for women used to prevent and treat gynecological diseases based on herbal ingredients, characterized by the fact that it contains a natural aqueous extract of pine and spruce needles. The extract is obtained in an extractor at a temperature of 80-100°C for 3-4 hours.

Other cosmetic products containing plant extracts, in particular those with depigmenting, antioxidant and anti-aging effects, are also based on plant-based raw materials, including the one described in CA2291289A1. These extracts constitute an active ingredient for the preparation of a cosmetic product for topical application to the skin, mucous membranes and/or superficial areas of the body and come from plants such as: mombin plum, walteria indica, edible potato, striped kelp, randia or Hawaiian hibiscus.

The benefits of using grape seeds in cosmetics are also known. Chinese patent description CN106236637 indicates that they are rich in polyphenols, vitamins, minerals, etc. They have antioxidant properties, improve skin elasticity, whiten, moisturize, remove freckles, reduce wrinkles, make the skin soft and smooth; they help prevent skin allergies and various skin diseases. Grape pomace, a waste product from wine production, is equally rich in bioactive ingredients, including polyphenols and organic acids. They are used in the cosmetics, food or pharmaceutical industries.

Methods of obtaining grape pomace extracts are described, among others, in US10485258B2, FR3096582A1 or ES2406858B1. The most commonly used methods are solvent extraction, extraction in the presence of supercritical carbon dioxide and steam distillation.

However, the aforementioned methods require the use of various types of auxiliary substances (amphiphilic solvents, compressed carbon dioxide) or conducting the process at relatively high temperatures (steam distillation), which causes the destruction of bioactive substances. In the case of extraction using supercritical carbon dioxide, the extract obtained has a very high viscosity, which during the production of cosmetics generates the need to heat the cosmetic mass or the need to use amphiphilic solvents. In all of the above cases, the bioactive substances contained in the extract are destroyed or undesirable auxiliary substances are introduced into the composition of the cosmetic. This prevents the full health-promoting potential of grape pomace extracts in cosmetics.

An alternative to standard extraction procedures is micellar extraction. This method allows, by using an aqueous solution of a surfactant - a surface-active compound, to obtain a plant extract at low temperature. However, fully effective use of the mentioned method for a selected plant matrix requires a specific composition of the extraction solution.

The problem remains the need to use additional components in the extraction medium, the presence of which in the target product is not essential and sometimes even undesirable, e.g. Polysorbate 20, Polysorbate 60, PEG-60 Hydrogenated Castor Oil, ethyl alcohol, glycols, glycerin or isopropyl myristate.

Intimate hygiene fluid containing natural origin agents with a care and washing effect and auxiliary agents, characterized in that it contains, as an agent with a care effect, reducing the irritation potential and indirectly influencing the limitation of skin drying after the washing process and imparting a color to the preparation in shades of red, from 0.01 to 85% by weight of an aqueous extract of red grape pomace containing extracted plant components and obtained by the micellar extraction technique, wherein 1 to 30% by weight of ground red grape pomace is subjected to the action of the extraction solution, and the extraction solution contains as exclusive ingredients from 64.5 to 98.89% by weight of water; from 0.1 to 4% by weight of decyl glucoside and from 0.01 to 1.5% by weight of a mixture of benzyl alcohol, benzoic acid, dehydroacetic acid and tocopherol as a preservative. Water acts as a solvent, and decyl glucoside as a surfactant. The ingredients used in the extraction solution are also the target ingredients of the cosmetic, so there is no need for additional purification of the extract obtained, nor the risk that undesirable substances will be introduced into it. The ingredients used in the extraction solution are fully transferred to the extract along with the extracted plant ingredients. After mixing the red grape pomace extract and the other agents included in the liquid, the intimate hygiene liquid contains at least partially derived from the extract:

- from 29.5 to 99.499 wt.% water, from 0.001 to 30 wt.% decyl glucoside as a washing agent and from 0.01 to 1.5 wt.% of a mixture of benzyl alcohol, benzoic acid, dehydroacetic acid and tocopherol, and additionally

- from 0 to 5 wt.% alkylamidopropyl betaine obtained from coconut oil fatty acids and used as a cleaning agent and from 0.01 to 1.5 wt.% citric acid as a pH regulator.

The composition of the extraction solution is based solely on the ingredients intended for the production of the final preparation and has been selected in such a way that it is possible to obtain appropriate aggregates (micelles) in the volume phase, ensuring the possibility of effective leaching of cosmetically valuable ingredients from the plant material. The extract obtained is composed solely of ingredients intended for the production of the final preparation and is intended for direct use in cosmetics intended for hygiene. Immediately after the process is completed, the extract is added to the cosmetic mass. Apart from substances isolated from the plant material, no other additional substances (e.g. alcohols, glycols or unnecessary surface-active compounds) are introduced into the cosmetic mass - this function is successfully performed by decyl glucoside, which is also used as a washing substance in the liquid). The micellar extraction itself is carried out at room temperature (up to a maximum of 30°C). The relatively low temperature of the process does not cause degradation of the active plant ingredients and therefore does not reduce or eliminate their advantages. The grape pomace extract obtained by this method is characterized by high naturalness, does not contain amphiphilic solvents and is microbiologically clean. It is an optimal ingredient of intimate hygiene fluid, giving the preparation a red or orange color, soothes allergic reactions, has anti-inflammatory effects, protects the skin from free radicals, reduces irritation potential and indirectly affects the reduction of skin drying after the washing process. Additionally, the fluid is characterized by very good foaming and rheological properties.

The subject of the invention is presented in detail in the embodiment examples.

Example 1

In the first stage of manufacturing the intimate hygiene fluid according to the invention, an extraction solution was prepared which contained 98.0% by weight of distilled water as a solvent, 1.6% by weight of decyl glucoside as a surface-active compound, allowing the formation of aggregates (micelles) in the volume phase of the extraction solution, thus enabling the leaching of bioactive substances of a hydrophobic nature from grape pomace, and 0.4% by weight of a mixture of benzyl alcohol, benzoic acid, dehydroacetic acid and tocopherol as a preservative (Euxyl K903). Red grape pomace was introduced into the extraction solution in a weight ratio of extraction solution: pomace of 9:1. The extraction was carried out at room temperature (not exceeding 30°C), with vigorous stirring for 3 hours. After the extraction process was completed, the solids remaining after the grape pomace were removed by centrifugation, and an aqueous extract of red grape pomace was obtained, ready to be introduced into the liquid. The extract, apart from the extracted plant components, contained all the components of the extraction solution in unchanged amounts.

The intimate hygiene fluid was then prepared by mixing the extract obtained in this way as a substance imparting a red colour to the preparation, soothing allergic reactions, having anti-inflammatory effects, protecting the skin against the action of free radicals, reducing the irritation potential and indirectly influencing the limitation of skin drying after the washing process with the remaining agents included in the fluid. The aforementioned extract in an amount of 80% by weight was mixed with 4.0% by weight of sodium alkaloyl glutamate, in which compound the alkyl residues came from fatty acids obtained from coconut oil - as the basic compound with a washing effect, 3.6% by weight of decyl glucoside as an auxiliary compound with a washing effect, 0.3% by weight of citric acid allowing to obtain a pH value of the preparation equal to 4.5 and 0.5% by weight. mixture of benzyl alcohol, benzoic acid, dehydroacetic acid and tocopherol as preservative (Euxyl K903). The rest of the mixture was water.

The intimate hygiene fluid with the given composition had the following physicochemical and functional properties: stability in load and thermal tests, colour in shades of red - L*a*b* parameters, respectively: 19.92; 22.23 and 31.46 (intimate hygiene fluid without extract had: 29.09; 0.01 and 0.88, respectively, the difference in color ΔΕ between intimate hygiene fluid with extract and fluid without extract was 38.9), skin moisture level after 2 hours from the washing process - an increase of 2.19% compared to the skin not subjected to the washing process (a similar intimate hygiene fluid without grape pomace extract caused a decrease in moisture to the level of -3.08% compared to the skin not subjected to the washing process - in this case a drying effect was demonstrated), irritation potential (zein number) 180 mg N / 100 ml (intimate hygiene fluid without grape pomace extract - value 218 mg N / 100 ml). Out of 20 people using the intimate hygiene fluid, 18 noticed a caring effect.

Example 2

In the first stage of manufacturing the intimate hygiene fluid according to the invention, an extraction solution was prepared, which contained 98.0% by weight of distilled water, 1.6% by weight of decyl glucoside and 0.4% by weight of a mixture of benzyl alcohol, benzoic acid, dehydroacetic acid and tocopherol (Euxyl K903). Red grape pomace was introduced into the extraction solution in a weight ratio of extraction solution: pomace of 8:2. The extraction was carried out at room temperature, with vigorous stirring for 3 hours. After the extraction process was completed, the solid parts remaining after the grape pomace were removed by centrifugation, thus obtaining an aqueous extract of red grape pomace, ready to be introduced into the fluid. The extract, apart from the extracted plant components, contained all the components of the extraction solution in unchanged amounts.

The intimate hygiene fluid was then prepared by mixing the extract obtained in this way with the remaining ingredients of the preparation. The aforementioned extract in an amount of 80% by weight was mixed with 4.0% by weight of sodium alkaloyl glutamate, in which the alkyl residues came from fatty acids obtained from coconut oil, 3.6% by weight of decyl glucoside, 0.3% by weight of citric acid allowing to obtain a pH value of the preparation equal to 4.5 and 0.5% by weight of a mixture of benzyl alcohol, benzoic acid, dehydroacetic acid and tocopherol (Euxyl K903). The rest of the mixture was water. The intimate hygiene fluid with the given composition had the following physicochemical and functional properties: stability in load and thermal tests, colour in shades of red - L*a*b* parameters respectively: 11.77; 17.29 and 18.76 (intimate hygiene fluid without extract had: 29.09; 0.01 and 0.88 respectively, the difference in colour δε between intimate hygiene fluid with extract and fluid without extract was 30.3), skin hydration level after 2 hours from the washing process - an increase of 2.51% compared to the skin not subjected to the washing process (a similar hygiene fluid without grape pomace extract caused a decrease in hydration to the level of -3.08% compared to the skin not subjected to the washing process - in this case, a drying effect was demonstrated), irritation potential (zein number) 168 mg N/100 ml (intimate hygiene fluid without grape pomace extract - value 218 mg N/100 ml). Out of 20 people using the intimate hygiene fluid, 18 noticed a caring effect.

Claims (1)

1. Intimate hygiene fluid containing natural origin agents with care and washing action and auxiliary agents, characterized in that it contains, as an agent with care action, reducing the irritation potential and indirectly influencing the limitation of skin drying after the washing process and giving the preparation a red shade of color, from 0.01 to 85% by weight of an aqueous extract of red grape pomace, in which extracted plant components are present, obtained by the micellar extraction technique, wherein 1 to 30% by weight of ground red grape pomace is subjected to the action of an extraction solution which contains, as exclusive ingredients, from 64.5 to 98.89% by weight of water, from 0.1 to 4% by weight of decyl glucoside and from 0.01 to 1.5% by weight of a mixture of benzyl alcohol, benzoic acid, dehydroacetic acid and tocopherol such that after mixing the red grape pomace extract and the other agents, the intimate hygiene fluid contains at least partly derived from the extract: - from 29.5 to 99.499 wt.% water, from 0.001 to 30 wt.% decyl glucoside and from 0.01 to 1.5 wt.% of a mixture of benzyl alcohol, benzoic acid, dehydroacetic acid and tocopherol and additionally - from 0 to 5 wt.% alkylamidopropyl betaine obtained from coconut oil fatty acids, from 0.01 to 1.5 wt.% citric acid.