KR20050026806A - Cosmetic composition containing jujube extract - Google Patents

Abstract

A cosmetic composition comprising the Ziziyphus spinosa HU. extract is provided, which Ziziyphus spinosa HU. extract inhibits secretion of cortisol as a stress hormone, reduces cholesterol level in blood, facilitates secretion of beta-endorpin, and elongates sleeping time without side effects, so that the composition can be useful for enhancement of skin elasticity and gloss. The cosmetic composition for skin enhancement comprises 0.0001 to 5 wt.% of the Ziziyphus spinosa HU. extract as an effective component, wherein the skin enhancement is to enhance the skin damaged by stresses, insomnia or neurasthenia; the composition has a formulation selected from solution, emulsion, suspension, paste, gel, cream, lotion, powder, soap, surfactant-containing cleansing, oil, powdered foundation, emulsified foundation, wax foundation and spray.

Description

Cosmetic composition containing Sanjoin extract {Cosmetic Composition Containing Jujube Extract}

The present invention relates to a cosmetic composition for skin improvement containing Sanjoin extract (Jujube extract).

The skin protects the body from the outside and functions to maintain homeostasis such as body temperature control, sebum secretion and hair growth. When the skin loses its function balance due to external chemical and physical stimuli, stress, insomnia and malnutrition, the cell's activity is reduced, and the components do not maintain their original stable structure. This reduces and reduces the skin's shine. In other words, if this skin function imbalance lasts a long time, abnormally generated or degraded cells such as fibroblasts and endothelial cells constituting skin dermis and extracellular matrix (ECM) components such as collagen, elastin and fibronectin This affects the structure of the entire skin, which ultimately promotes aging such as wrinkles or reduced elasticity.

Our body secretes stress hormones called cortisol by chemical and physical stimuli, stress, insomnia and malnutrition from the outside. When the human body is stressed, corticotropin releasing hormone (CRH) is first produced in the hypothalamus, which stimulates the pituitary gland to promote the production of adrenocorticotropic hormone (ACTH). Again, this hormone stimulates the adrenal cortex and secretes an adrenal cortex hormone called cortisol. This hormone acts on the increase of glucose neosynthesis, decreased immune function, inhibition of growth hormone and sex hormone production, increased blood cholesterol and platelet aggregation in various tissues of the human body.

Cortisol, as opposed to melatonin, a sleep control hormone, is known to increase production during the day and decrease production at night. Usually its secretion is the lowest around 1-3 am, and blood levels begin to rise again around 6 am. Cortisol is also known to affect sleep, caffeine ingestion of caffeine stimulates the adrenal cortex and increases the amount of cortisol secretion interferes with sleep. In the human body, cell regeneration is best at sleep, metabolism is active, immune cells are also active, blood hormone levels are highest, and beta-endorphin secretion is increased.

Beta-Endorphin is a small 32-amino acid protein produced in the hypothalamus that is similar in function to drugs like morphine. When beta-endorphin is produced during physical or mental stress, it improves mood and relieves pain. When beta-endorphin is produced when the mind and body are calm and comfortable, it has an anticancer effect and smoothes metabolism.

It is believed that healthy skin can be maintained through the effects obtained from sleep.

On the other hand, Sanjoin is known to be effective in insomnia, nervous breakdown, symptoms of cold sweating and nervous stress during sleep, and in Korea Patent Application No. 2001-36035 "Food for promoting growth using herbal medicines" Sanjoin with food It is disclosed that the weight gain is improved when ingested in piglets. As such, Sanjoin has been widely used in foods, herbal medicines, and feeds, but it has not been used for the purpose of helping skin health by improving the reduction of skin elasticity and moisture caused by chemical or physical stress by applying it to cosmetic compositions. .

Throughout this specification, numerous patent documents and articles are referenced and their citations are indicated. The disclosures of cited patent documents and articles are incorporated herein by reference in their entirety, so that the level of the technical field to which the present invention belongs and the contents of the present invention are more clearly explained.

The present inventors have diligently researched how to maintain the skin in which the elasticity and the moisture are deteriorated due to chemical, physical stimulation, stress, insomnia, malnutrition, etc. from the outside, and the sanjoin extract is a stress hormone cortisol. It has been found to have an effect of inhibiting secretion of blood, lowering the amount of cholesterol in the blood, promoting the secretion of beta-endorphin, and prolonging the sleep time. Confirmed to be enhanced to complete the present invention.

Accordingly, it is an object of the present invention to provide a cosmetic composition for skin improvement comprising the acid extract as an active ingredient.

Other objects and advantages of the present invention will become apparent from the following examples and claims.

The present invention relates to a cosmetic composition for skin improvement containing the acid extract.

The composition of the present invention is characterized by containing the acid extract as an active ingredient.

Sanjoin (酸棗仁) used as an active ingredient in the composition of the present invention refers to the seeds of wild jujube (aka: jujube jujube) ( Zizyphus vulgaris Lamarck var. Spinosus Bunge), jujube jujube is commonly grown and produced in Korea ( Zizyphus vulgaris Lamarck var. Inermis Bunge) and its type and efficacy are different.

Mountain jujube is a deciduous shrub, grows about 2-4 m in height, young branches are green, and branches have needle-shaped and semi-curved spines. It takes Similar to the leaves of jujube tree, but a little smaller. Yellow-green small flowers in May-June, fruits mature in September-October. Unlike jujube, the seeds of the plant are long oval, light reddish brown, almost without flesh, fruit with thin skin, whole with seeds, length of fruit is about 0.8-1 cm, diameter is shorter than this. The leaves of this plant are called Sanjo Leaf, and the root bark is medicinal called Sanjo Root Bark.

Particularly, the species of medulled jujube () 仁) is called Sanjoin (酸棗仁) and has been handed down from the whale as a psychiatric medicine and has been used well. Sanjoin is picking fruits in autumn and soaking them in water for one day, removing the flesh, and then breaking the skin of the fruit to remove Jongin (種 仁) and dried it in the sun.

The components of the sanjoin include the alkaloids of the cyclopeptides, sanjoinine A, B, D, F and G, mauritine A, mucronin D, jubanine A and B. Examples of the peptide-based alkaloids include sanjoinine, and apophine-based alkaloids such as zizyphusine. Meanwhile, ebelinlactone is hydrolyzed to produce jujubogenin. Jujubogenin belongs to the dammarane glycoside in addition to jujuboside A and B, and its action is also expected. The fruit contains 0.06% flavone glycoside and 0.35% coumarin derivatives. Other ingredients include betulic acid betulin, spinocin-6-p-coumaryl spinosin, and 6-feruloyl spinosin. It contains a variety of ingredients (Biochemistry News, 1990; 10 (4): 239-245).

The Chinese classic herbaceous hardwood, the species obtained from the fruit, is used as a nerve tonic, it repairs cotton, and provides good effects on the stomach. In addition, the raw material of the servant (生 品) is used for the fortification of soy sauce, and also has the effect of bodam (補 膽). Therefore, insomnia as well as insomnia has good sedative effect.

The acid extract used in the present invention may be obtained through various methods known in the art, and preferably includes (a) water, (b) anhydrous or hydrous lower alcohol having 1 to 4 carbon atoms (eg, methanol, ethanol). , Propanol, butanol, and the like), (c) acetone, (d) ethyl acetate, (e) chloroform or (f) 1,3-butylene glycol as an extraction solvent. More preferably, the extraction solvent is ethanol, most preferably about 70% ethanol. The acid join which becomes the material of extraction can be used by drying it, or it can be used as it is, Preferably it is used by drying. As a drying method, natural drying or a hot air drying method can be used.

Referring to the preparation method of the acid extract with reference to the following specific preparation example of the present invention as follows: The acid join is washed with purified water and then dried and crushed into small pieces, which is 1-10 times lower than its dry weight Add alcohol. After extracting for several days at a constant temperature, it was filtered through a filter cloth. Filter again with filter paper and dry with a rotary evaporator. The dried sanjoin extract powder is used by dissolving in glycol, preferably butylene glycol.

On the other hand, it is apparent to those skilled in the art that the extract of the present invention can be obtained not only the above-described extraction solvent, but also an acid crude extract having substantially the same effect using other extraction solvents.

In addition, the extract of the present invention includes not only the extract by the above-mentioned extraction solvent, but also an extract that has undergone a conventional purification process. Obtained by various additional purification methods, such as, for example, separation using ultrafiltration membranes having a constant molecular weight cut-off value, separation by various chromatography (manufactured for separation according to size, charge, hydrophobicity or affinity). The fraction is also included in the acid extract of the present invention.

Sanjoin extract of the present invention may be prepared in a powder state by an additional process such as vacuum distillation, freeze drying or spray drying.

The cosmetic composition containing the sanjoin extract of the present invention improves the function of the skin worsened by external factors.

External factors, especially when the skin is unbalanced due to mental factors such as stress, insomnia and nervous breakdown, cells such as fibroblasts and endothelial cells and extracellular matrix (ECM) components that make up the dermis are abnormal It is generated or decomposed, which ultimately promotes aging such as wrinkles or reduced elasticity.

Sanjoin extract of the present invention (i) inhibits the release of cortisol, a stress hormone secreted by the external factors, (ii) decreases the content of cholesterol, (i) promotes the production of beta-endorphin, (i) prolongs sleep time There is an effect, and by the above effects or a combination thereof, it prevents and improves the imbalance in the function of the skin, and consequently maintains the function of the skin, thereby promoting skin elasticity and skin benefits.

Therefore, in the present invention, the term "aggravated skin" refers to skin having an imbalance in the function of the skin due to external factors, in particular, mental factors such as stress, insomnia, and nervous breakdown, and the function of which is degraded. The term "skin improvement" in the present invention means to prevent and improve the imbalance of the skin, including the enhancement of skin elasticity or skin shine.

According to a preferred embodiment of the present invention, the content of the acid extract is 0.0001-5.0% by weight relative to the total weight of the composition.

The components included in the cosmetic composition of the present invention include components conventionally used in cosmetic compositions in addition to the acidic extract as the active ingredient, and include, for example, conventional contents such as antioxidants, stabilizers, solubilizers, vitamins, pigments and flavorings, and Carrier.

The skin elasticity and skin-enhancing composition of the present invention can be prepared in any formulation commonly prepared in the art, for example, solutions, suspensions, emulsions, pastes, gels, creams, lotions, powders, soaps , Surfactant-containing cleansing, oils, powder foundations, emulsion foundations, wax foundations, sprays, and the like, but is not limited thereto. More specifically, it may be prepared in the form of a flexible lotion, nutrition lotion, nutrition cream, massage cream, essence, eye cream, cleansing cream, cleansing foam, cleansing water, pack, spray or powder.

When the formulation of the present invention is a paste, cream or gel, animal oils, vegetable oils, waxes, paraffins, starches, trachants, cellulose derivatives, polyethylene glycols, silicones, bentonites, silicas, talc or zinc oxide may be used as carrier components. Can be.

When the formulation of the present invention is a powder or a spray, lactose, talc, silica, aluminum hydroxide, calcium silicate or polyamide powder may be used, in particular in the case of a spray, additionally chlorofluorohydrocarbon, propane Propellant such as butane or dimethyl ether.

When the formulation of the present invention is a solution or emulsion, a solvent, solubilizer or emulsifier is used as the carrier component, such as water, ethanol, isopropanol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1 Fatty acid esters of, 3-butylglycol oil, glycerol aliphatic ester, polyethylene glycol or sorbitan.

When the formulation of the present invention is a suspension, liquid carrier diluents such as water, ethanol or propylene glycol, suspending agents such as ethoxylated isostearyl alcohol, polyoxyethylene sorbitol ester and polyoxyethylene sorbitan ester, microcrystals Soluble cellulose, aluminum metahydroxy, bentonite, agar or tracant and the like can be used.

When the formulation of the present invention is a surfactant-containing cleansing, the carrier component is an aliphatic alcohol sulfate, an aliphatic alcohol ether sulfate, a sulfosuccinic acid monoester, isethionate, an imidazolinium derivative, a methyltaurate, a sarcosinate, a fatty acid amide. Ether sulfates, alkylamidobetaines, aliphatic alcohols, fatty acid glycerides, fatty acid diethanolamides, vegetable oils, lanolin derivatives or ethoxylated glycerol fatty acid esters and the like can be used.

According to the present invention, the present invention prevents the imbalance of skin function caused by external factors by using an extract of Sanjoin, which is known to be effective in insomnia, nervous breakdown, symptoms of cold sweating during sleep, and nervous stress. And improve skin elasticity and shine.

Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are only for illustrating the present invention in more detail, it is to those skilled in the art that the scope of the present invention is not limited by these examples in accordance with the gist of the present invention. Will be self-evident.

Preparation Example 1: Sanjoin Extract Preparation Method

The acid join was washed with purified water, dried and broken into small pieces, and then 1-10 times 70% lower alcohol of the dry weight was added thereto. After extraction for 5 days at 15-35 ℃ filtered with 300 mesh filter cloth. The filter was again filtered through Whatman No. 5 filter paper, and then dried using a rotary evaporator to obtain a dry weight of 47 g / kg. The dried acid extract powder was dissolved in 50% 1,3-butylene glycol and used.

Experimental Example 1: Effect of Sanjoin Extract on Cortisol, Beta-Endorphin and Cholesterol Levels in Rats

Sanjoin extract of Preparation Example 1 affected the cortisol secretion, beta-endorphin secretion and cholesterol levels, it was confirmed that the rats exhibited the stress adaptation and stress relief effect. When the rat is immobilized and immobilized, the rat promotes the secretion of stress hormones cortisol and beta-endorphin due to stress, and it is known that the cholesterol content in the blood increases.

Sanjoin extract of Preparation Example 1 was orally administered to mice at 10 mg / kg and the mice were fixed for 16 hours. After 16 hours, the amounts of cortisol, beta-endorphin and cholesterol of the experimental animals were measured. The results are shown in Table 1 below.

Effect of Sanjoin Extract on Cortisol, Beta-Endorphin and Cholesterol Levels in Rat Blood Survey subject Steady state Control Sanjoin Extract (10 mg / kg) Beta-Endorphin (pg / ml) 8.56 ± 2.30 13.56 ± 3.72 18.36 ± 3.98 Cortisol (ug / ml) 2.23 ± 1.02 2.99 ± 1.16 2.43 ± 1.08 Cholesterol (mg / ml) 12.28 ± 0.66 27.69 ± 1.32 16.82 ± 1.30

As can be seen from the results of Table 1, the beta-endorphin production was increased by 35.4%, cortisol and blood cholesterol decreased by 18.8% and 39.3%, respectively, in the administration group of the Sanjoin extract compared to the control group without the administration of the Sanjoin extract. . Therefore, it can be seen that the Sanjoin extract can effectively cope with excessive stress, that is, increase the production of beta-endorphin, and reduce cortisol and cholesterol levels.

Experimental Example 2: Sleep Time Extension Effect of Sanjoin Extract

The effect of Sanjoin extract of Preparation Example 1 on the prolongation of sleep time induced by hexobbital in mice was measured.

10 male rats (20-30 g) in each group were intraperitoneally injected with a well-known sleeping agent hexobarbital at 50 mg / kg of body weight, and the sanjoin extract obtained in Preparation Example 1 was 5 mg / kg, respectively, 10 mg and 20 mg were injected to investigate the effect of prolonging sleep time. Only hexobarbital was injected intraperitoneally, and the sanjoin extract was not injected as a control. The results are shown in Table 2 below.

Sanjoin Extract Induced Sleep Time Induced by Hexobarbital in Mice Dosage Sleep time (minutes) effect(%) 0 mg / ml (control) 5 mg / ml 10 mg / ml 20 mg / ml 33.6 ± 3.546.4 ± 3.953.2 ± 3.954.1 ± 4.2 -38.158.361.0

As can be seen from the above results, Sanjoin extract showed the effect of prolonging the sleep time of rats induced by the known sleeping agent hexobarbital, and the concentration of sleep time was concentration-dependent at concentrations of 5 mg / ml and 10 mg / ml. At higher concentrations, the effect of prolonging sleep time did not appear.

On the basis of the experimental examples, the skin roughened by the causes of chemical, physical stimulation, stress, insomnia, malnutrition, etc. from the outside, including a sanjoin extract that can maintain a healthy state of reduced skin and elasticity and moisture Several solubilized formulations and emulsifier formulations are presented. Although this is described in detail in the following formulation example, the composition of the present invention is not limited only to the following examples.

Formulation Example 1: Softener (Skin Lotion)

A flexible longevity containing the acid extract as shown in Table 3 below was prepared according to a conventional method.

ingredient Content (% by weight) Sanjoin Extract 1.0 glycerin 5.0 1,3-butylene glycol 3.0 PEG 1500 1.0 Allantoin 0.1 DL-panthenol 0.3 EDTA-2Na 0.02 Benzophenone-9 0.04 Sodium hyaluronate 5.0 ethanol 10.0 Octicdodeceth-16 0.2 Polysorbate 20 0.2 incense 0.02 Uniside-U 13 0.01 Green # 13 0.001 Distilled water Remaining amount Sum 100

Formulation Example 2: Converging Cosmetic Water

As shown in Table 4 below, astringent cosmetic water containing an acid extract was prepared according to a conventional method.

ingredient Content (% by weight) Sanjoin Extract 1.0 glycerin 2.0 1,3-butylene glycol 2.0 Allantoin 0.2 DL-panthenol 0.2 EDTA-2Na 0.02 Benzophenone-9 0.04 Sodium hyaluronate 3.0 ethanol 15.0 Polysorbate 20 0.3 Witch Hagel Extract 2.0 Citric acid a very small amount incense 0.02 Uniside-U 13 0.01 Green # 13 0.001 Distilled water Remaining amount Sum 100

Formulation Example 3: Nutrients

Nutrients containing Sanjoin extract as shown in Table 5 below were prepared according to a conventional method.

ingredient Content (% by weight) Sanjoin Extract 1.0 Glyceryl Stearate SE 1.5 Cetearyl Alcohol 1.5 lanolin 1.5 Polysorbate 60 1.3 Sorbitan stearate 0.5 Cured Vegetable Oil 1.0 Mineral oil 5.0 Squalane 3.0 Trioctanoine 2.0 Dimethicone 0.8 Tocopherol Acetate 0.5 Carboxyvinyl Polymer 0.12 glycerin 5.0 1,3-butylene glycol 3.0 Sodium hyaluronate 5.0 Triethanolamine 0.12 incense 0.01 Uniside-U 13 0.02 Green # 3 0.003 Distilled water Remaining amount Sum 100

Formulation Example 4: Nutrition Cream

A nutritive cream containing an acid extract, as shown in Table 6 below, was prepared according to a conventional method.

ingredient Content (% by weight) Sanjoin Extract 3.0 Lipophilic monostearate 2.0 Cetearyl Alcohol 2.2 Stearic acid 1.5 Beeswax 1.0 Polysorbate 60 1.5 Sorbitan stearate 0.6 Cured Vegetable Oil 1.0 Squalane 3.0 Mineral oil 5.0 Trioctanoine 5.0 Dimethicone 1.0 Sodium magnesium silicate 0.1 glycerin 5.0 Betaine 3.0 Triethanolamine 1.0 Sodium hyaluronate 4.0 incense 0.01 Uniside-Y13 0.02 Green # 3 0.003 Distilled water Remaining amount Sum 100

Formulation Example 5: Massage Cream

A massage cream containing an acid extract, as shown in Table 7 below, was prepared according to a conventional method.

ingredient Content (% by weight) Sanjoin Extract 2.0 Lipophilic Monostearic Acid Glycerin 1.5 Cetearyl Alcohol 1.5 Stearic acid 1.0 Polysorbate 60 1.5 Sorbitan stearate 0.6 Isostearyl Isosterate 5.0 Squalane 5.0 Mineral oil 35.0 Dimethicone 0.5 Hydroxyethyl cellulose 0.12 glycerin 6.0 Triethanolamine 0.7 incense 0.01 Uniside-Y13 0.02 Green # 3 0.003 Distilled water Remaining amount Sum 100

Formulation Example 6: Essence

Essences containing the acid extract as shown in Table 8 below was prepared according to a conventional method.

ingredient Content (% by weight) Sanjoin Extract 2.0 glycerin 10.0 Betaine 5.0 PEG 1500 2.0 Allantoin 0.1 DL-panthenol 0.3 EDTA-2Na 0.02 Benzophenone-9 0.04 Hydroxyethyl cellulose 0.1 Sodium hyaluronate 8.0 Carboxy Vinyl Polymer 0.2 Triethanolamine 0.18 Octyldodecanol 0.3 Octyldodeceth-16 0.4 ethanol 6.0 incense 0.02 Uniside-U 13 0.01 Green # 3 0.001 Distilled water Remaining amount Sum 100

Formulation Example 7: Pack

As shown in Table 9 below, a pack containing an acid extract was prepared according to a conventional method.

ingredient Content (% by weight) Sanjoin Extract 1.0 Polyvinyl alcohol 15.0 Cellulose gum 0.15 glycerin 3.0 PEG 1500 2.0 Chicdestrin 0.15 DL-panthenol 0.4 Allantoin 0.1 Glycyrisin Monoammonium 0.3 Nicotinamide 0.5 ethanol 6.0 PEG 40 Cured Castor Oil 0.3 incense a very small amount Uniside-Y13 0.02 Green # 3 0.003 Distilled water Remaining amount Sum 100

Experimental Example 3: Measurement of Skin Elasticity and Skin Moisturizing Effect

The cosmetic composition comprising the extract of Sanjoin of the present invention was applied to the human body and the skin elasticity and the degree of skin moisturization were evaluated.

Each morning, 20 healthy females in their 30s and 40s were treated with cream (Example) and Sanjoin extract prepared in Formulation Example 4 and the cream (Comparative Example) replaced with purified water each morning on the right and left sides of the face, respectively. Two evenings, 0.2 g each was applied to the facial skin, and after about two months, the elasticity and shine of the facial skin were evaluated by themselves. In addition, skin elasticity was measured using the instrument Cutometer SEM 575, and skin moisture was measured using the instrument Colorimeter Minolta CR-300. The experimental results are shown in Table 10.

division Comparative example Example Self-evaluation Skin elasticity Excellent 2 Excellent 8 Normal 10 Excellent 6 Excellent 8 Usually 6 Skin shine Excellent 2 Excellent 10 Normal 8 Excellent 5 Excellent 10 Normal 8 Device evaluation Skin elasticity 0.86 ± 0.12 0.93 ± 0.17 Skin shine 57.9 ± 5.13 62.8 ± 5.71

When using the cream containing the extract Sanjoin (Example), it was found that the skin elasticity and skin benefits are increased compared to the cream (Comparative Example) not containing the extract Sanjoin.

Experimental Example 4: Stability Test of the Formulation

In order to test the stability of the formulation of the cosmetic composition comprising the acid extract of the present invention, the cream containing the extract of Sanjoin formulated in Table 4 (Example) and the cream (Comparative Example) replacing the sanjoin extract with purified water to 45 ℃ After keeping for 12 weeks in an opaque glass container in a constant-temperature bath and a completely shaded refrigerator maintained at 4 ℃ constant, the degree of separation and discoloration was measured. The degree of separation and discoloration of the formulation was evaluated by classifying into the following six grades.

* Evaluation criteria for discoloration of formulation

0: no change 1: very little separation (discoloration)

2: little separation (discoloration) 3: little separation (discoloration)

4: severely separated (discolored) 5: extremely severely separated (discolored)

The experimental results are shown in Table 11 below.

Temperature Degree of discoloration of the formulation Example Comparative example 45 ℃ 0 0 0 ℃ 0 0

As shown in Table 11, the cosmetic compositions of Examples and Comparative Examples did not occur discoloration and separation did not occur in the stability of the formulation.

Having described the specific part of the present invention in detail, it is apparent to those skilled in the art that the specific technology is merely a preferred embodiment, and the scope of the present invention is not limited thereto. Therefore, the substantial scope of the present invention will be defined by the appended claims and equivalents thereof.

As described in detail above, the present invention provides a cosmetic composition comprising the acid extract. Sanjoin extract of the present invention prevents and improves the imbalance of skin function through the effect of inhibiting the secretion of cortisol, a type of stress hormone, reducing blood cholesterol, promoting the secretion of beta-endorphin, and prolonging sleep time. It is very effective in enhancing skin elasticity and skin shine. In addition, the cosmetic composition containing an acid extract is not a problem in stability.

Claims (7)

Cosmetic composition for skin improvement containing the acid extract as an active ingredient. According to claim 1, wherein the skin improvement is a cosmetic composition for skin improvement, characterized in that for improving the skin worsened by mental factors. The cosmetic composition for improving skin of claim 2, wherein the mental factor is stress, insomnia, or nervous breakdown. The cosmetic composition for improving skin according to claim 1, wherein the skin improvement is skin elasticity enhancement or skin shine enhancement. The method of claim 1, wherein the Sanjoin extract (i) inhibits the secretion of cortisol, (ii) decreases the content of cholesterol, (i) promotes the production of beta-endorphin, (i) prolongs sleep time or (i) combinations thereof ( skin improvement cosmetic composition, characterized in that for improving the skin by combination). The cosmetic composition for skin improvement according to any one of claims 1 to 5, wherein the content of the acid extract is 0.0001-5% by weight based on the total weight of the composition. The composition of claim 1, wherein the composition is a solution, suspension, emulsion, paste, gel, cream, lotion, powder, soap, surfactant-containing cleansing, oil, powder foundation, emulsion foundation Cosmetic composition for improving skin, characterized in that it has a formulation selected from the group consisting of wax foundation and spray.