Cosmetic composition for improving skin condition of body, comprising makgeolli lees and beer lees, and preparation method therefor

Abstract

The present invention relates to a cosmetic composition for improving skin condition of the body, comprising Makgeolli lees and beer lees, and a preparation method therefor. The composition of the present invention exhibits excellent moisturizing effects and itchiness reducing effects when applied to the human body, and thus can be usefully employed for the purpose of improving skin condition.

Description

Cosmetic composition for improving body skin condition including makgeolli lees and beer lees and method for producing same

[0001] The present invention relates to a cosmetic composition for improving body skin condition, including makgeolli lees and beer lees, and a method for producing the same.

[0002] The skin protects the body's organs from external stimuli such as temperature and humidity changes, ultraviolet rays, and pollutants, and acts as a barrier to prevent moisture from evaporating from the skin.

[0003] The skin gradually ages over time. Internal factors contributing to skin aging include genetic mutations and tissue changes, while external factors include UV rays and humidity. As aging progresses, dryness and a weakened immune system can lead to itchiness. This itchiness can rob us of our peace in daily life, and for seniors living alone, it can even trigger depression, like feeling like there's no one to scratch your back.

[0004] Meanwhile, demand for eco-friendly products is increasing due to growing awareness of the harmful effects of synthetic chemicals and increasing interest in sustainability and ethical consumption.

[0005] TechSci Research, an international market research firm headquartered in Burnaby, British Columbia, Canada, predicts that the global organic cosmetics market will continue to grow due to the growing demand for chemical-free personal care products and the changing lifestyles of consumers regarding organic care. The eco-friendly (organic) body products market is expected to reach USD 9.83 billion in 2021, USD 10.49 billion in 2022, and USD 21.16 billion in 2030, showing a CAGR of 8.9% during the forecast period of 2023-2030.

[0006] Jigemi refers to the dregs left after filtering alcohol and adding water to the dregs to squeeze out the mother liquor. It is also called suljimi, jubak, juja, jujae, and duljeongbak.

[0007] The above-mentioned waste is often disposed of, causing environmental pollution and even conflicts among local residents due to landfills. However, the above-mentioned waste still contains beneficial components for the human body, making it necessary to re-value these otherwise discarded resources.

[0008] Although there have been various attempts to utilize the lees in the past, the extracts produced from the lees have limitations in extracting useful components, and as a result, it is still difficult to find products developed with the lees as the main ingredient.

[0009] Therefore, creative reuse (upcycling) is important, which recycles discarded waste resources, such as lees, to provide products at good prices while being environmentally friendly, and efficiently extracting various components contained in lees to transform them into new, high-value-added products rich in beneficial ingredients for the human body.

[0010] The inventors of the present invention recognized the problems of the above-mentioned prior art and confirmed that a cosmetic composition including a mixed extract of makgeolli lees and beer lees extracted by a method including specific steps can exhibit an excellent moisturizing effect and an itching reduction effect when applied to the human body, thereby improving the skin condition, and thus completed the present invention.

[0011] The present invention relates to a cosmetic composition for improving skin condition, comprising a mixed extract of makgeolli lees and beer lees, wherein the makgeolli lees and beer lees extracts are prepared by a method comprising the following steps.

[0012] S1) Step of drying, crushing and mixing makgeolli lees and beer lees;

[0013] S2) Step of immersing the above mixture in a citric acid aqueous solution;

[0014] S3) Step of cooling the above immersed mixture;

[0015] S4) A step of treating the cooled mixture with ultrasonic waves;

[0016] S5) Step of adding a strain to the sonicated mixture and fermenting it;

[0017] S6) A step of preparing an extract from the fermented mixture; and

[0018] S7) Step of filtering and concentrating the above extract.

[0019] The present invention relates to a method for producing a cosmetic composition for improving skin condition.

[0020] This is described in detail below. All combinations of the various elements disclosed in the present invention fall within the scope of the present invention. Furthermore, the scope of the present invention is not limited by the specific description below.

[0021] Additionally, unless otherwise defined herein, all terms used herein should be understood to have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains.

[0022] Also, singular expressions include plural expressions unless the context clearly dictates otherwise.

[0023] In this specification, terms such as "first" and "second" may be used to distinguish or describe one component from another, but these terms should not be interpreted as limiting the components. For example, within the scope of the present invention, a "first" component may be referred to as a "second" component, or vice versa.

[0024] Also, in this specification, "degree" combined with a number means degree Celsius ( o C) represents, " o C" can be used interchangeably (e.g., "100 degrees" is "100 o (used with the same meaning as "C").

[0025] The present invention provides a cosmetic composition for improving skin condition comprising a mixed extract of makgeolli lees and beer lees.

[0026] In the present invention, "Makgeolli" refers to a type of traditional Korean alcoholic beverage, also referred to as takju, neongdok, jaeju, hoeju, or baekju. According to an embodiment of the present invention, the makgeolli may preferably be rice makgeolli fermented by adding nuruk to rice, but is not limited thereto.

[0027] In the present invention, 'beer' refers to an alcoholic beverage made by fermenting malt made from grains and adding hops, a spice, to the malt as a main ingredient to make it flavorful.

[0028] In the present invention, 'jjimi' refers to the dregs left after straining alcohol, which are obtained by adding water to the dregs and squeezing the mother liquor, and is also referred to as suljjimi, djubak, juja, djuje, and duljeongmaek. It is known that the dregs contain a variety of nutrients, such as starch, protein, fiber, minerals, vitamins, enzymes, and yeast.

[0029] In the present invention, 'mixed extract' means an extract prepared from a mixture of raw materials rather than each raw material.

[0030] In the present invention, 'extract' means a result of extraction using an appropriate extraction solvent, and the extract includes the extract itself and all formulations that can be formed using the extract, such as an extract obtained by extraction, a diluted or concentrated extract, a dried product obtained by drying the extract, a controlled or purified product thereof, a fraction thereof, or a mixture thereof.

[0031] The extract of the present invention may be manufactured and used in the form of a dried powder after extraction, but is not limited thereto.

[0032] In the present invention, the extract may be prepared using an extraction method commonly used in the art. For example, methods such as hot water extraction, hot water extraction, cold immersion extraction, reflux cooling extraction, ultrasonic extraction, and high-temperature pressure extraction may be used.

[0033] In preparing the extract of the present invention, water; lower alcohols having 1 to 4 carbon atoms such as methanol, ethanol, propyl alcohol, and butyl alcohol; polyhydric alcohols such as glycerin, butylene glycol, and propylene glycol; hydrocarbon solvents such as chloroform, methyl acetate, ethyl acetate, benzene, hexane, diethyl ether, petroleum ether, and dichloromethane; or a mixed form thereof may be used as the extraction solvent, but is not limited thereto.

[0034] In the present invention, the mixed extract of makgeolli lees and beer lees can be produced by a method comprising the following steps:

[0035] S1) Step of drying, crushing and mixing makgeolli lees and beer lees;

[0036] S2) Step of immersing the above mixture in a citric acid aqueous solution;

[0037] S3) Step of cooling the above immersed mixture;

[0038] S4) A step of treating the cooled mixture with ultrasonic waves;

[0039] S5) Step of adding a strain to the sonicated mixture and fermenting it;

[0040] S6) A step of preparing an extract from the fermented mixture; and

[0041] S7) Step of filtering and concentrating the above extract.

[0042] In the present invention, steps S1 to S4 are pretreatment steps prior to fermentation, and are performed to increase the activity of useful components contained in makgeolli lees and beer lees, and to obtain an extract with a high extraction yield during the subsequent fermentation process.

[0043] In the above step S1, the drying of the makgeolli lees and beer lees is not limited to any commonly known method such as hot air drying, freeze drying, or room temperature drying. However, according to an embodiment of the present invention, it may be preferable to perform room temperature drying, but is not limited thereto.

[0044] The crushing in the above step S1 is performed to secure a large surface area in the subsequent step so that reaction or extraction can easily occur, and can be performed using a commonly known method.

[0045] In the above step S1, the makgeolli lees and beer lees can be mixed in a weight ratio of 2-1:1, and according to an embodiment of the present invention, the makgeolli lees and beer lees can be mixed in a weight ratio of 1:1, but is not limited thereto.

[0046] In the above step S2, the concentration of the citric acid aqueous solution may be 0.01 to 1% (v / v), preferably 0.01 to 0.3% (v / v), but is not limited thereto. In addition, according to an embodiment of the present invention, the concentration of the citric acid aqueous solution may be preferably 0.05% (v / v), but is not limited thereto.

[0047] In the above step S2, the citric acid aqueous solution may be added in an amount of 100 to 500 parts by weight relative to 100 parts by weight of the mixture of makgeolli lees and beer lees, and according to an embodiment of the present invention, the citric acid aqueous solution may be added in an amount of 200 to 400 parts by weight, or 150 to 350 parts by weight relative to 100 parts by weight of the mixture of makgeolli lees and beer lees, but is not limited thereto.

[0048] In the above S2 step, according to the embodiment of the present invention, the immersion using the citric acid aqueous solution is 50 to 80 o It may be performed at a temperature of C for 1 to 10 minutes, but is not limited thereto.

[0049] In the above S3 step, the cooling is 15 to 25 o It may be to lower the temperature to C, preferably 20 to 25 o It may be, but is not limited to, lowering the temperature to C.

[0050] In the above step S4, the ultrasonic waves may be low frequency ultrasonic waves, and the low frequency may be a frequency of 5 to 30 kHz, and according to an embodiment of the present invention, the frequency may be 23 kHz, but is not limited thereto.

[0051] In the above step S4, the ultrasonic irradiation time may be 3 to 7 hours, and according to an embodiment of the present invention, the ultrasonic irradiation time may be 4 to 6 hours, but is not limited thereto.

[0052] According to an embodiment of the present invention, after performing step S4 and before performing step S5, a step of maturing the mixture of the pretreated makgeolli lees and beer lees at a low temperature may be further included, wherein the maturation is performed for 1 to 5 o It can be performed at a temperature of C for 5 to 15 hours, but is not limited thereto.

[0053] In the present invention, the S5 step is a step of performing fermentation on the pretreated makgeolli lees and beer lees.

[0054] The strain used in the above step S5 may be a lactic acid bacterium, specifically Lactobacillus, and more specifically Lactobacillus sakei, Lactobacillus brevis, or Lactobacillus plantarum, and according to an embodiment of the present invention, the lactic acid bacterium may be Lactobacillus brevis, but is not limited thereto.

[0055] The above S6 step is a step of performing extraction from a fermented mixture, and according to an embodiment of the present invention, the extraction can be performed by a method including the following steps:

[0056] S6-1) The fermented mixture is 45 to 60 o A first extraction step at a temperature of C; and

[0057] S6-2) Add ethanol to the first extracted mixture and stir for 45 to 60 o Secondary extraction step at temperature C.

[0058] According to an embodiment of the present invention, steps S6-1 and S6-2 may be performed for 1 to 5 hours, preferably 1 to 3 hours, but are not limited thereto.

[0059] According to an embodiment of the present invention, in the step S6-2, ethanol may be introduced at a concentration of 60% (v / v) and in an amount of 30% of the volume of the resultant obtained in the step S5, but is not limited thereto.

[0060] The above S7 step is a step of finally filtering and concentrating the extract, and the filtration and concentration can be performed using a method conventional in the art, and the method is not limited thereto.

[0061] According to an embodiment of the present invention, a freeze-drying step may be further included after the S7 step, but is not limited thereto.

[0062] In the present invention, the mixed extract of makgeolli lees and beer lees may be included in an amount of 0.1 to 20 wt% relative to the total weight of the cosmetic composition, preferably 1 to 10 wt%, and more preferably 3 to 7 wt%, but is not limited thereto.

[0063] In the present invention, the cosmetic composition may be for body use, and in the present invention, ‘for body use’ means use for a part other than the face.

[0064] In the present invention, 'improvement in skin condition' may refer to one or more of the effects of improving skin moisture content, alleviating itchiness, alleviating inflammation, and improving skin tone. However, according to an embodiment of the present invention, it may be improvement in skin moisture content and alleviating itchiness, but is not limited thereto.

[0065] The ingredients included in the cosmetic composition of the present invention may include ingredients commonly used in cosmetic compositions, and include, for example, conventional auxiliary agents such as preservatives, antioxidants, stabilizers, solubilizers, vitamins, pigments, and fragrances, and carriers.

[0066] In the present invention, the composition may further include a preservative. Examples of the preservative include, but are not limited to, parabens, alcohols, organic acids and their salts, isothiazole compounds, urea, and triclosan.

[0067] The cosmetic composition of the present invention may be formulated in the form of, for example, a solution, a suspension, an emulsion, a paste, a gel, a powder, a cream, a lotion, a toner, a water-soluble liquid, an essence, a surfactant-containing cleansing, an oil, a powder foundation, an emulsion foundation, a wax foundation, a spray, a shampoo, a rinse, a body wash, a soap, etc., but is not limited thereto, and may be manufactured in any form of a formulation commonly manufactured in the cosmetic industry.

[0068] When the cosmetic composition of the present invention is formulated as a paste, cream or gel, animal oil, vegetable oil, wax, paraffin, starch, tragacanth, cellulose derivatives, polyethylene glycol, silicone, bentonite, silica, talc or zinc oxide may be used as a carrier component.

[0069] When the cosmetic composition of the present invention is formulated as a powder or spray, lactose, talc, silica, aluminum hydroxide, calcium silicate or polyamide powder may be used as a carrier component, and particularly in the case of a spray, a propellant such as chlorofluorohydrocarbon, propane / butane or dimethyl ether may be additionally included.

[0070] When the cosmetic composition of the present invention is formulated as a solution or emulsion, a solvent, solubilizer or emulsifier is used as a carrier component, and may include, for example, water, ethanol, isopropanol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1,3-butyl glycol oil, glycerol aliphatic ester, polyethylene glycol or fatty acid ester of sorbitan.

[0071] When the cosmetic composition of the present invention is formulated as a suspension, a liquid diluent such as water, ethanol or propylene glycol, a suspending agent such as ethoxylated isostearyl alcohol, polyoxyethylene sorbitol ester and polyoxyethylene sorbitan ester, microcrystalline cellulose, aluminum metahydroxide, bentonite, agar or tragacanth, etc. can be used as a carrier component.

[0072] When the cosmetic composition of the present invention is formulated as a surfactant-containing cleanser, aliphatic alcohol sulfate, aliphatic alcohol ether sulfate, sulfosuccinic acid monoester, isethionate, imidazolinium derivative, methyl taurate, sarcosinate, fatty acid amide ether sulfate, alkylamidobetaine, fatty alcohol, fatty acid glyceride, fatty acid diethanolamide, vegetable oil, lanolin derivative, or ethoxylated glycerol fatty acid ester may be used as a carrier component.

[0073] Other ingredients other than the various moisturizing ingredients mentioned above can be appropriately selected and mixed without difficulty by those skilled in the art depending on the formulation or intended use.

[0074] Another aspect of the present invention provides a method for producing a cosmetic composition comprising a mixed extract of makgeolli lees and beer lees, comprising the following steps:

[0075] M1) A step for producing a mixed extract of makgeolli lees and beer lees; and

[0076] M2) A step of mixing the mixed extract of the above-mentioned makgeolli lees and beer lees so that it amounts to 0.1 to 20 wt% of the total composition.

[0077] In the present invention, the mixed extract of makgeolli lees and beer lees can be mixed in an amount of 0.1 to 20 wt% relative to the total weight of the cosmetic composition, preferably 1 to 10 wt%, and more preferably 3 to 7 wt%, but is not limited thereto.

[0078] In the present invention, the mixed extract of makgeolli lees and beer lees may be produced by a method comprising the following steps:

[0079] S1) Step of drying, crushing and mixing makgeolli lees and beer lees;

[0080] S2) Step of immersing the above mixture in a citric acid aqueous solution;

[0081] S3) Step of cooling the above immersed mixture;

[0082] S4) A step of treating the cooled mixture with ultrasonic waves;

[0083] S5) Step of adding a strain to the sonicated mixture and fermenting it;

[0084] S6) A step of preparing an extract from the fermented mixture; and

[0085] S7) Step of filtering and concentrating the above extract.

[0086] In this specification, specific details related to the method for manufacturing a cosmetic composition are applied substantially the same as described in the cosmetic composition, unless otherwise stated, and are omitted to avoid unnecessary repetition.

[0087] The cosmetic composition for improving the body skin condition of the present invention exhibits an excellent moisturizing effect and an itchiness-reducing effect when applied to the human body, and thus can be usefully used for the purpose of improving the skin condition.

[0088] In addition, the cosmetic composition for improving the body skin condition of the present invention is made by recycling discarded waste resources, so it is environmentally friendly and can produce a product at a good price by reducing the production cost.

[0089] Hereinafter, the present invention will be described in more detail through examples. However, these examples are intended to exemplify the present invention, and the scope of the present invention is not limited by these examples. In addition, each component or feature may be considered optional unless otherwise explicitly stated. Each component or feature may be implemented in a form that is not combined with other components or features. Furthermore, various embodiments may be configured by combining some components and / or features. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment. Furthermore, terms not specifically defined herein should be understood to have the meaning commonly used in the technical field to which the present invention pertains.

[0090]

[0091] Example

[0092] First, the makgeolli (main ingredient: rice) and beer (main ingredient: malt) lees were completely dried using a room temperature dryer and then finely ground.

[0093] Then, the crushed makgeolli lees and beer lees were evenly mixed at a weight ratio of approximately 1:1.

[0094] Add 0.05% (w / v) citric acid aqueous solution to the above mixture of leeks in an amount of about 3 times the weight, and mix for 50 to 80 o It was left (immersed) at a temperature of C for about 5 minutes.

[0095] Then, the soaked leeks mixture is soaked for 20 to 25 oAfter cooling to C, the container was exposed to ultrasonic waves (frequency: 23 kHz) using an ultrasonic device for approximately 5 hours while maintaining the temperature. During this time, the container was continuously stirred.

[0096] And the sonicated mixture is aged for 1 to 5 o It was cooled to a temperature of C and aged for about 10 hours while maintaining the temperature.

[0097] After that, Lactobacillus brevis, a lactic acid bacterium, was added to the sonicated mixture and fermentation was performed. Specifically, Lactobacillus brevis B3-18, cultured in MRS broth for 20 hours, was added to 10 8 Inoculate to cfu / g, 27 o C was cultured for 24 hours.

[0098] Then, the fermented lees mixture was 50±5 o The first extraction was performed by stirring at a temperature of C for about 2 hours, and 60% (v / v) ethanol corresponding to 30% of the volume of the contents of the container was additionally added, and the second extraction was performed by stirring for about 2 hours, followed by filtration, concentration under reduced pressure, and freeze-drying to obtain an extract.

[0099] Next, a cosmetic composition of the example was prepared using 5.00% of the above-mentioned prepared extract, 6.00% of propanediol, 5.00% of glycerin, 0.50% of betaine, 0.40% of polyglyceryl-10 laurate, 0.35% of carbomer, 0.30% of arginine, 0.5% of butylene glycol, and the remainder of purified water.

[0100]

[0101] Comparative example

[0102] First, the makgeolli lees and beer lees were completely dried using a room temperature dryer and then finely ground.

[0103] Then, the crushed makgeolli lees and beer lees were evenly mixed at a weight ratio of approximately 1:1.

[0104] Next, Lactobacillus brevis, a lactic acid bacterium, was added to the mixture and fermentation was performed. Specifically, Lactobacillus brevis B3-18, cultured in MRS broth for 18 hours, was added to 10 8 Inoculate to cfu / g, 27 o C was cultured for 24 hours.

[0105] Then, the fermented lees mixture was 50±5 o The extraction was carried out by stirring at a temperature of C for about 4 hours, and the extract was obtained by filtration and concentration.

[0106] Next, a cosmetic composition of a comparative example was prepared using 5.00% of the above-mentioned prepared extract, 6.00% of propanediol, 5.00% of glycerin, 0.50% of betaine, 0.40% of polyglyceryl-10 laurate, 0.35% of carbomer, 0.30% of arginine, 0.5% of butylene glycol, and the remainder of purified water.

[0107]

[0108] Experimental example

[0109]

[0110] 1. Selection criteria for test subjects

[0111] 1) A person who has received a sufficient explanation of the matters that must be disclosed to the test subject by the test manager or a person authorized by the test manager and has voluntarily written and signed a consent form.

[0112] 2) People who usually experience itchiness due to dryness in the test area

[0113] 3) Adult men and women aged 65 years or older (n=20), healthy individuals without acute or chronic physical illnesses, including skin diseases.

[0114] 4) People who can be monitored during the test period

[0115]

[0116] 2. Exclusion criteria

[0117] 1) Pregnant or lactating women and women who may become pregnant

[0118] 2) People who have used topical skin products containing steroids for more than one month to treat skin diseases.

[0119] 3) Those who have not passed 6 months since participating in the same test

[0120] 4) People with sensitive or hypersensitive skin

[0121] 5) People with skin abnormalities such as spots, acne, erythema, or telangiectasia in the test area

[0122] 6) Those who received treatment in the test area within 6 months prior to the start of the study

[0123] 7) Any other person deemed unsuitable for the test by the test manager.

[0124]

[0125] 3. Criteria for dropping out

[0126] 1) If adverse reactions such as burning sensation or erythema occur at the test site

[0127] 2) If the test subject is exposed to excessive ultraviolet rays on the test area during the test or has difficulty evaluating the results due to excessive drinking or smoking, etc.

[0128] 3) If the test taker has difficulty in follow-up observation due to personal reasons during the test process.

[0129] 4) If the test subject violates the usage method or schedule without any special reason.

[0130]

[0131] 4. Test method

[0132] Corneometer ®It is a device that indirectly measures moisture content by utilizing the property that the capacitance of the skin increases in proportion to the moisture content. The unit of measurement is expressed as Arbitrary Unit (AU), which is a relative, arbitrary value of the skin moisture content.

[0133] The subjects washed their upper arms with the same body cleanser, gently patted dry with a paper towel, and then left them in a constant temperature and humidity room (temperature: 22±2) for 30 minutes. o After stabilizing at C, humidity: 50±5%), measurements were performed 5 times each using a corneometer, and the average value of the measurements was recorded as the measurement value.

[0134] The subjects were instructed on precautions and usage instructions, and the compositions of the examples (n=10) and comparative examples (n=10) were distributed. The subjects were instructed to use them twice a day, in the morning and evening, for 4 weeks.

[0135] Device measurements were performed on the same area before use of the test substance, immediately after use, after two weeks of use, and after four weeks of use.

[0136]

[0137] 5. Test Results (1)

[0138] The test results related to the skin moisture improvement effect are shown in the table below.

[0139] Before use, immediately after use, after 2 weeks of use, after 4 weeks of use, Example 35.23±5.11, 53.33±5.10, 55.12±5.27, 57.12±5.11, Comparative example 35.25±5.10, 45.72±6.06, 47.26±5.45, 48.03±5.27

[0140] As can be seen from the above results, in the case of the example, the moisture content of the skin increased by 51.38% immediately after one use, 56.46% after two weeks of use, and 62.13% after four weeks of use compared to before use of the test substance.

[0141] In contrast, in the comparative example, moisture content increased by 29.70% immediately after one use, 34.07% after two weeks of use, and 36.26% after four weeks of use.

[0142] The above results confirm that the cosmetic composition of the present invention exhibits excellent moisturizing effects. Furthermore, it can be confirmed that it exhibits even better moisturizing effects compared to the comparative example, which omitted some steps in the extract preparation process.

[0143]

[0144] 6. Test Results (2)

[0145] A tickling relief assessment (itching assessment) was conducted on the study subjects who visited before the above test, 2 weeks after the test, and 4 weeks after the test.

[0146] The evaluation criteria were classified from 0 to 4 points according to the degree of ticklishness, as shown in Table 2 below.

[0147] <Evaluation Criteria>

[0148] 4: Very ticklish

[0149] 3: Severe tickling

[0150] 2: The tickling is severe

[0151] 1: I feel a little ticklish

[0152] 0: No tickling

[0153] Before use, 2 weeks after use, 4 weeks after use, Example 2.211.120.09

[0154] As can be seen from the above results, the average value related to the degree of itching relief of the test subject significantly decreased compared to before use, confirming that the composition of the present invention can have a significant improvement effect on itching when applied to the skin.

[0155]

[0156] The various embodiments described above may be embodied in other specific forms without departing from the technical idea and essential characteristics thereof. Therefore, the detailed description above should not be construed as limiting in all respects but rather as illustrative. The scope of the various embodiments should be determined by a reasonable interpretation of the appended claims, and all changes within the equivalent scope of the various embodiments are included within the scope of the various embodiments. Furthermore, claims that are not explicitly cited in the claims may be combined to form an embodiment or incorporated into a new claim through a post-application amendment.

Claims

1. Contains a mixed extract of makgeolli lees and beer lees. The above makgeolli lees and beer lees extracts are prepared by a method comprising the following steps, a cosmetic composition for improving skin condition: S1) A step of drying, crushing and mixing makgeolli lees and beer lees; S2) A step of immersing the above mixture in a citric acid aqueous solution; S3) A step of cooling the above immersed mixture; S4) A step of applying ultrasonic waves to the cooled mixture; S5) Step of adding a strain to the sonicated mixture and fermenting it; S6) a step of preparing an extract from the fermented mixture; and S7) Step of filtering and concentrating the above extract.

2. In paragraph 1, A cosmetic composition for improving skin condition, wherein, in the above step S1, makgeolli lees and beer lees are mixed in a weight ratio of 1:

1.

3. In paragraph 1, A cosmetic composition for improving skin condition, wherein in the step S2, the citric acid aqueous solution has a concentration of 0.01 to 1% (v / v).

4. In paragraph 1, A cosmetic composition for improving skin condition, wherein the ultrasound in the above step S4 is performed at a frequency of 5 to 30 kHz for 3 to 7 hours.

5. In paragraph 1, In the above step S6, the extract is a cosmetic composition for improving skin condition, which is manufactured by a method comprising the following steps: S6-1) The fermented mixture was heated for 45 to 60 o A first extraction step at a temperature of C; and S6-2) Add ethanol to the first extracted mixture and stir for 45 to 60 minutes. o Secondary extraction step at temperature C.