CN111743802A

CN111743802A - Composition for increasing skin elasticity and application thereof

Info

Publication number: CN111743802A
Application number: CN202010734687.7A
Authority: CN
Inventors: 韦越; 林青霞
Original assignee: Guangzhou Yingyuan Biotechnology Co ltd
Current assignee: Guangzhou Yingyuan Biotechnology Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2020-10-09
Anticipated expiration: 2040-07-28
Also published as: CN111743802B

Abstract

The invention discloses a composition for increasing skin elasticity and application thereof, aiming at providing a composition which has synergistic interaction of all components and effectively promotes synthesis of collagen in fibroblasts, and the composition provided by the invention can be applied to cosmetics to improve the phenomena of skin relaxation, roughness, wrinkles and the like, so as to achieve the effects of increasing skin elasticity, improving skin firmness and delaying aging, and mainly comprises the following components in parts by weight: 5-10 parts of aconite leaf cowpea seed extract, 2-12 parts of wild soybean seed extract, 3-8 parts of date fruit extract, 50.5-3 parts of palmitoyl tripeptide, 35-50 parts of polyhydric alcohol and 26-42 parts of water; belongs to the technical field of cosmetics.

Description

Composition for increasing skin elasticity and application thereof

Technical Field

The invention discloses a composition, in particular to a composition capable of improving skin elasticity, and belongs to the technical field of cosmetics.

Background

Aging is an indispensable stage in the process of any biological activity, and is a gradual, genetic factor-influenced and irreversible decline process of complex morphological structure and physiological function of the whole body along with the aging after the organism develops and matures. The skin is the largest organ of the human body, plays a role in protecting, regulating body temperature, secretion, excretion, immunity and other aspects, and is gradually aged like other organs of the human body with the age. Aged skin, characterized apparently by skin laxity and appearance of wrinkles, skin roughness at exposed parts of the body, and wrinkles deepening and thickening; abnormal epidermal structure, pigmentation, loss of skin elasticity, relaxation, etc. The number of fibroblasts in the dermis layer of aging skin gradually decreases, the ability to synthesize collagen and elastin decreases, the ratio of type I collagen to type iii collagen decreases, collagen fibers become thick, abnormal cross-linking occurs, and the aging skin is in a state of disorder arrangement.

Collagen and elastin are two important types of proteins that make up the dermis layer of the skin, and can impart strength and toughness to the extracellular matrix, and can impart elasticity and firmness to the skin. Aged skin has reduced ability to synthesize collagen and elastin, and thickened collagen fibers, resulting in reduced skin elasticity, laxity, roughness, and increased wrinkles. Therefore, collagen and elastin supplementation in the skin is an important approach to anti-aging. The collagen and the elastin can be supplemented by directly adding soluble collagen on one hand and adding active ingredients capable of promoting fibroblasts to secrete the collagen and the elastin on the other hand. Although the cosmetics containing soluble collagen have certain effects of resisting wrinkles and preserving moisture, the cosmetics only act on epidermis and are difficult to enter dermis, the effect is greatly reduced, and the problem of collagen loss can be fundamentally solved by a method of stimulating skin cells to synthesize collagen, so that the effects of durably and effectively improving skin elasticity and delaying skin aging are achieved.

Therefore, it is required to develop a composition for increasing skin elasticity by promoting skin collagen synthesis, and to apply it to cosmetics.

Disclosure of Invention

In view of the above disadvantages, the present invention aims to provide a composition for increasing skin elasticity, which has synergistic effects of the components, can effectively promote synthesis of collagen and elastin in fibroblasts, and can improve skin relaxation, pachylosis, wrinkles, etc. when applied to cosmetics, so as to achieve the effects of increasing skin elasticity, increasing skin firmness, and delaying aging.

Therefore, the first technical scheme provided by the invention is as follows:

the composition for increasing skin elasticity mainly comprises the following components in percentage by mass: 5-10 parts of aconite leaf cowpea seed extract, 2-12 parts of wild soybean seed extract, 3-8 parts of date fruit extract, 50.5-3 parts of palmitoyl tripeptide, 35-50 parts of polyhydric alcohol and 26-42 parts of water.

Wherein the extract of cowpea seed has effects of promoting cell regeneration and collagen synthesis, removing wrinkle, and improving skin firmness.

The extract of semen glycines contains abundant flavone, can promote growth of fibroblast, promote synthesis of collagen and elastin in fibroblast, and has effects of activating skin, resisting aging, keeping skin moisture, and keeping moisture.

Palmitoyl tripeptide-5 is a synthetic small-molecule tripeptide, can directly reach the dermis layer to play a role, can greatly promote the synthesis of collagen, effectively remove any type of wrinkles, inhibit protease, promote the proliferation of extracellular fibrous matrix, promote the generation of the collagen, protect the collagen from being degraded by degrading enzyme, and has obvious effects of resisting wrinkles and smoothing skin.

Excessive free radicals in the body also hinder the synthesis of collagen and elastin, and cause collagen cell breakdown, oxidation of healthy cells, acceleration of skin aging in humans, and increase of wrinkles. The jujube fruit extract contains various components such as abundant flavonoids, saponin vitamin C and the like, has strong antioxidant activity, and participates in the redox reaction of tissue cells, so that the content of collagen in the body can be increased.

Furthermore, the composition for increasing skin elasticity provided by the invention also comprises 2-6 parts of Japanese late cherry flower extract. The extract of Japanese late cherry contains isoflavone, flavonoid, sakuranetin, prunetin and its glycoside, has antioxidant effect, and can promote type I collagen synthesis, promote fibroblast growth, enhance collagen network formation, and improve skin elasticity.

Furthermore, the composition for increasing skin elasticity provided by the invention also comprises 1-7 parts of the extract of the leptochloa scoparia. The Acremonium strictum extract can improve skin activity, accelerate cell regeneration, promote synthesis of collagen I in fibroblasts, efficiently reconstruct a connecting structure and increase skin firmness.

Furthermore, in the composition for increasing skin elasticity, the polyalcohol is one or the combination of two of glycerin, butanediol and 1, 2-pentanediol.

Furthermore, the weight ratio of the aconitum carmichaeli seed extract to the wild soybean seed extract in the composition for improving skin elasticity is 2: 1.

Furthermore, the weight ratio of the jujube fruit extract to the Japanese evening primrose flower extract in the composition for improving skin elasticity is 1: 1.

In order to further improve the storage stability of the composition of the invention, 0.01-1 part of maltodextrin can be added into the composition.

The extract used in the present invention can be obtained by a conventional extraction method in the art, either in-house or commercially. For example, fructus Jujubae extract can be obtained by extracting fructus Jujubae with water or ethanol by conventional method, and concentrating the obtained extractive solution to obtain extract; the semen glycines extract is prepared by drying and pulverizing semen glycines, extracting with ethanol by conventional method, and concentrating the extractive solution to powder; the Japanese late cherry blossom extract is prepared by extracting Japanese late cherry blossom with ethanol or water by conventional method, and concentrating the obtained extractive solution to obtain extract. The extract is prepared by taking the extract as the standard in the field as the limit.

Wherein the aconite leaf cowpea seed extract can be prepared by the following method:

(1) drying, crushing and sieving the cowpea seeds with a 90-mesh sieve, putting the cowpea seeds into a pressure-resistant bag, adding 60% ethanol solution according to the proportion of 1g to 20mL of the material-liquid ratio, extracting for 15min under the conditions of ultrahigh pressure of 350Mpa and the temperature of 40 ℃, filtering and concentrating the extracting solution until no alcohol smell exists;

(2) sterilizing the concentrated solution obtained in the step (1) at 105 ℃ for 15min, cooling to room temperature, adjusting pH to 6.0, and inoculating with 10%⁶CFU/mL spore suspension of Aspergillus nigerFermenting and culturing the liquid for 72 hours on a shaking table with the rotating speed of 220r/min at the constant temperature of 35 ℃, wherein the dosage ratio of the aspergillus niger spore suspension to the aconite leaf cowpea seed powder is 3mL:1 g;

(3) filtering the fermentation liquor obtained in the step (2), sterilizing the filtrate at 120 ℃ for 15min under high pressure to inactivate the strains, cooling, filtering to obtain a supernatant, passing the supernatant through an AB-8 macroporous adsorption resin column, eluting with 3 times of column volume of distilled water, eluting with 4 times of column volume of 70% ethanol, collecting the ethanol eluate, and concentrating under reduced pressure to dryness to obtain the aconite leaf cowpea seed extract.

The Sphacelaria scoparia extract can be prepared by the following method:

(1) cleaning and drying the Sphacelaria scoparia, crushing and sieving by a 60-mesh sieve to obtain Sphacelaria scoparia powder;

(2) adding the fine branch black top algae powder in the step (1) into 80% ethanol solution according to the ratio of 1g to 30mL of the material to liquid for ultrasonic extraction, wherein the ultrasonic power is 400W, the ultrasonic temperature is 60 ℃, the ultrasonic time is 30min, filtering and removing impurities, concentrating the filtrate under vacuum and reduced pressure to 10% of the original volume, and performing spray drying to obtain the fine branch black top algae extract.

The second technical scheme provided by the invention is as follows:

the composition for increasing the skin elasticity is applied as a cosmetic additive, and the cosmetic is any one of cream, emulsion, essence, skin care water, facial mask and gel. During production, the selection and preparation process of other components in the cosmetic can be carried out according to the conventional operation in the field, and the composition for increasing the skin elasticity accounts for 0.5-6 percent of the mass of the cosmetic

Compared with the prior art, the invention has the following beneficial effects:

(1) the composition is reasonably prepared from an aconite leaf cowpea seed extract, a wild soybean seed extract, a date fruit extract and palmitoyl tripeptide-5, and the content of collagen in the skin is supplemented through various ways of promoting the synthesis of collagen, protecting the collagen from being degraded and resisting oxidation, so that wrinkles are improved and reduced, the elasticity and the firmness of the skin are enhanced, and the skin aging is prevented. The composition may further comprise Japanese late cherry blossom extract and Sphacelaria scoparia extract, which, in combination with other ingredients, further enhance the antioxidant properties and collagen production promoting ability of the composition, make the skin more firm, and have tension and elasticity, and prevent and reduce the signs of skin aging.

(2) When the aconite leaf cowpea seed extract and the wild soybean seed extract are compounded in a specific proportion, the composition has the best capability of promoting synthesis of collagen in fibroblasts, and when the date fruit extract and the Japanese evening primrose flower extract are compounded in a specific proportion, the antioxidant performance of the composition is also obviously improved, so that the skin fibroblast proliferation is stimulated, the content of the collagen in the skin is improved, the elastic, fine and glossy skin feeling of the skin is recovered, the skin tends to be young, and the skin aging relieving effect is obvious.

Detailed Description

The following claims are hereby incorporated into the detailed description of the invention, with the understanding that the invention is not to be limited in any way, as any number of modifications may be made by one within the scope of the claims and the invention is still within the scope of the claims.

Example 1

The invention provides a composition for increasing skin elasticity, which comprises the following components in parts by weight: 6g of aconite leaf cowpea seed extract, 11g of wild soybean seed extract, 5.5g of jujube fruit extract, 50.5g of palmitoyl tripeptide, 35g of butanediol and 42g of water.

Wherein the aconite leaf cowpea seed extract is prepared by the following method:

(1) drying, crushing and sieving the aconite leaf cowpea seeds with a 90-mesh sieve to obtain aconite leaf cowpea seed powder;

(2) and (2) adding 60% ethanol solution into the aconite leaf cowpea seed powder in the step (1) according to the ratio of 1g to 25mL of material to liquid for ultrasonic extraction, wherein the ultrasonic power is 500W, the ultrasonic temperature is 80 ℃, the ultrasonic time is 20min, filtering and removing impurities, concentrating the filtrate under vacuum and reduced pressure to 10% of the original volume, and performing spray drying to obtain the aconite leaf cowpea seed extract.

Example 2

Example 3

The invention provides a composition for increasing skin elasticity, which comprises the following components in parts by weight: 10g of aconite leaf cowpea seed extract, 2g of wild soybean seed extract, 8g of jujube fruit extract, 53g of palmitoyl tripeptide, 25g of glycerol, 18g of butanediol and 34g of water.

Example 4

The invention provides a composition for increasing skin elasticity, which comprises the following components in parts by weight: 5g of aconite leaf cowpea seed extract, 12g of wild soybean seed extract, 3g of jujube fruit extract, 51g of palmitoyl tripeptide, 2g of Japanese evening primrose flower extract, 21g of butanediol, 17g of 1, 2-pentanediol and 39g of water.

Example 5

The invention provides a composition for increasing skin elasticity, which comprises the following components in parts by weight: 7g of aconite leaf cowpea seed extract, 5g of wild soybean seed extract, 3g of jujube fruit extract, 52g of palmitoyl tripeptide, 6g of Japanese evening primrose flower extract, 26g of glycerol, 19g of 1, 2-pentanediol and 32g of water.

Example 6

The invention provides a composition for increasing skin elasticity, which comprises the following components in parts by weight: 5g of aconite leaf cowpea seed extract, 2g of wild soybean seed extract, 5g of jujube fruit extract, 51g of palmitoyl tripeptide, 3g of Japanese evening primrose flower extract, 7g of leptinotarsa deliciosa extract, 20g of glycerol, 20g of butanediol, 10g of 1, 2-pentanediol, 1g of maltodextrin and 26g of water.

Example 7

The invention provides a composition for increasing skin elasticity, which comprises the following components in parts by weight: 5g of aconite leaf cowpea seed extract, 4g of wild soybean seed extract, 6g of jujube fruit extract, 53g of palmitoyl tripeptide, 4g of Japanese evening primrose flower extract, 1g of leptinotarsa lineata extract, 30g of butanediol, 10g of 1, 2-pentanediol and 37g of water.

Example 8

The invention provides a composition for increasing skin elasticity, which comprises the following components in parts by weight: 6g of aconite leaf cowpea seed extract, 3g of wild soybean seed extract, 6g of jujube fruit extract, 53g of palmitoyl tripeptide, 4g of Japanese evening primrose flower extract, 1g of leptinotarsa lineata extract, 30g of butanediol, 10g of 1, 2-pentanediol and 37g of water.

Example 9

The invention provides a composition for increasing skin elasticity, which comprises the following components in parts by weight: 6g of aconite leaf cowpea seed extract, 3g of wild soybean seed extract, 5g of jujube fruit extract, 53g of palmitoyl tripeptide, 5g of Japanese evening primrose flower extract, 1g of leptinotarsa lineata extract, 30g of butanediol, 10g of 1, 2-pentanediol and 37g of water.

In the above examples 1-9, the fructus Jujubae extract is obtained by extracting fructus Jujubae with 50% ethanol by conventional method, and concentrating the extractive solution to obtain extract; the semen glycines extract is prepared by drying and pulverizing semen glycines, extracting with 50% ethanol by conventional method, and concentrating the extractive solution to powder; the Japanese late cherry blossom extract is prepared by extracting Japanese late cherry blossom with 50% ethanol by conventional method, and concentrating the obtained extractive solution to obtain extract.

The ramose Lasiocladia extract is prepared by the following method:

In examples 2 to 9, the aconite leaf cowpea seed extract was prepared by the following method:

(2) sterilizing the concentrated solution obtained in the step (1) at 105 ℃ for 15min, cooling to room temperature, adjusting pH to 6.0, and inoculating with 10%⁶Carrying out fermentation culture on CFU/mL spore suspension of aspergillus niger on a shaking table at the constant temperature of 35 ℃ and the rotating speed of 220r/min for 72h, wherein the dosage ratio of the spore suspension of aspergillus niger to the aconite leaf cowpea seed powder is 3mL:1 g;

To demonstrate the effect of the present invention, comparative experimental examples of the present application are given below:

comparative example 1

A composition comprising the following components in parts by weight: 17g of wild soybean seed extract, 6g of jujube fruit extract, 35g of butanediol and 42g of water.

Compared with example 2, the Aconitum carmichaeli seed extract was replaced with an equal amount of wild soybean seed extract, palmitoyl tripeptide-5 was replaced with an equal amount of jujube fruit extract, and the other ingredients were not changed, and the wild soybean seed extract and jujube fruit extract were prepared in the same manner as in example 2.

Comparative example 2

A composition comprising the following components in parts by weight: 17g of aconite leaf cowpea seed extract, 56g of palmitoyl tripeptide, 35g of butanediol and 42g of water.

Compared with example 2, the wild soybean seed extract was replaced with an equal amount of an aconite leaf cowpea seed extract, the date fruit extract was replaced with an equal amount of palmitoyl tripeptide-5, and the other ingredients were not changed, and the preparation method of the aconite leaf cowpea seed extract was the same as example 2.

Comparative example 3

A composition comprising the following components in parts by weight: 17g of aconite leaf cowpea seed extract, 5.5g of jujube fruit extract, 50.5g of palmitoyl tripeptide, 35g of butanediol and 42g of water.

Compared with example 2, the wild soybean seed extract was replaced with an equal amount of aconite leaf cowpea seed extract, the other ingredients were not changed, and the preparation method of aconite leaf cowpea seed extract and jujube fruit extract was the same as example 2.

Comparative example 4

The invention provides a composition for increasing skin elasticity, which comprises the following components in parts by weight: 5g of aconite leaf cowpea seed extract, 12g of wild soybean seed extract, 51g of palmitoyl tripeptide, 5g of Japanese evening primrose flower extract, 21g of butanediol, 17g of 1, 2-pentanediol and 39g of water.

Compared with example 4, the jujube extract was replaced with equal amount of Japanese late cherry flower extract, other components were not changed, and the preparation method of Aconitum carmichaeli seed extract, Glycine max seed extract, and Japanese late cherry flower extract was the same as example 4.

To better illustrate the advantages of the present invention, the following are the efficacy tests of the compositions provided by the present invention:

test 1: skin irritation test

(1) Test samples: compositions prepared in examples 1-9.

(2) The test method comprises the following steps: 30 healthy volunteers are selected, the age is 18-45 years, the test subjects meet the volunteer selection standard, no history of allergic dermatitis exists, and no irritant product is used in the previous month.

Taking about 0.020-0.025 ml of a test sample, coating the test sample in a small chamber of a spot tester (Beijing science popularization instrument factory), externally applying a special adhesive tape on the back of a testee, removing the spot tester after 24 hours, slightly wiping off the residual product by using a wet paper towel after the residual product is left, and recording the result according to the skin reaction grading standard in technical Specification for cosmetic safety (2015) at 0.5 hour, 24 hours and 48 hours respectively. The identification criteria are shown in Table 1.

TABLE 1 identification standards

Grade	Identification criteria
		0	Has no irritation and erythema
1	Mild erythema
		2	Erythema
3	Erythema, pimples, blisters
		4	Severe edema and bulla

As can be seen from the results of the closed patch test, 30 subjects showed no adverse reaction and no symptoms such as erythema, burning sensation, itching, etc. at 0.5 hour, 24 hours, and 48 hours with respect to the skin elasticity-increasing compositions prepared in examples 1 to 9. The composition of the invention is safe and mild to use and has no stimulation to skin.

And (3) testing 2: collagen synthesis promoting effect

(1) Test samples: the compositions of examples 1 to 9 and comparative examples 1 to 4 were prepared into sample solutions having a mass concentration of 1% with deionized water.

(2) The test method comprises inoculating normal human skin fibroblasts to cell culture plate at appropriate density, digesting cells with 0.25% trypsin, preparing single cell suspension with 10% fetal bovine serum-containing DMEM, and culturing at a concentration of 1 × 10 per well⁵Inoculating into 96-well plate or cell culture dish (30mm), adding DMEM medium containing 10% fetal calf serum and high sugar, and synchronously treating each group of cellsAt 5% CO₂And culturing in an incubator at 37 ℃. And (4) respectively incubating the blank control group without treatment and the drug group added with the test sample for 3-5 days. After the culture was completed, 0.5mL of the cell culture medium was centrifuged, and the supernatant was measured for secretion of Type I procollagen (Type I procollagen) by using a human Type I procollagen carboxy-terminal peptide (PICP) ELISA kit according to the instructions and performed three times in parallel. The content of type I procollagen in the blank control culture medium was defined as 100%, and the test results are shown in Table 2.

Table 2 results of collagen synthesis promotion test

Sample (I)	Relative type I procollagen content (%)
		Control group	100％
Example 1	139.72％
		Example 2	143.68％
Example 3	145.20％
		Example 4	148.51％
Example 5	149.35％
		Practice ofExample 6	152.42％
Example 7	151.84％
		Example 8	156.17％
Example 9	158.96％
		Comparative example 1	109.12％
Comparative example 2	113.47％
		Comparative example 3	128.60％
Comparative example 4	132.43％

As can be seen from the experimental results in Table 1, when the cells were treated with the compositions of examples 1 to 9, the amount of type I procollagen was significantly increased, compared to the blank control group without the composition of the present invention, whereas the increase in type I procollagen was smaller with the compositions of comparative examples 1 to 4, indicating that the composition provided by the present invention synergistically enhances collagen production in fibroblasts better. When the composition of example 9 is used for culture, the content of type I procollagen is improved to the greatest extent, which shows that when the aconite leaf cowpea seed extract, the wild soybean seed extract, the date fruit extract and the Japanese evening primrose flower extract are respectively compounded at a specific ratio, the composition has the best capability of promoting the synthesis of collagen, and better recovers the skin elasticity, fine and glossy skin feeling.

And (3) testing: skin elasticity test

(1) Test samples: the compositions of examples 2, 4, 7, 8 and 9 and comparative examples 1 to 4 were added to the following essence bases in an amount of 1 wt% to obtain cosmetics containing the compositions of examples 2, 4, 7, 8 and 9 and comparative examples 1 to 4, which were designated as essence 1 to 5 and comparative essence 1 to 4 in this order, and the essence bases were used as controls.

Phase A: deionized water is added to 100 percent, EDTA disodium is 0.05 percent, and sodium hyaluronate is 0.05 percent;

phase B: 0.15% of xanthan gum and 6% of butanediol;

and C phase: 1% of the composition of examples 2, 4, 7, 8, 9 or comparative examples 1-4;

phase D: 0.02% of sodium hydroxide and 2% of deionized water;

phase E: 0.6% of caprylhydroxamic acid// 1, 2-hexanediol// 1, 3-propanediol, 0.2% of perfume, 0.6% of PPG-26-Butanethole-26// PEG-40 hydrogenated castor oil// water.

The preparation methods of the above emulsions 1-5 and comparative emulsions 1-4 were as follows:

heating the phase A material to 80-82 ℃, adding the phase B material which is uniformly mixed in advance, homogenizing at a medium speed until the phase B material is completely and uniformly dispersed, preserving the heat for 15min, and stirring and cooling;

cooling the mixed solution in the step I to 40-45 ℃, sequentially adding the C-phase material and the pre-mixed uniformly D-phase material, uniformly stirring, continuously adding the pre-mixed uniformly E-phase material, and stirring until the mixture is clear and transparent;

sampling, and discharging after the detection is qualified.

(2) The test method comprises the following steps: 50 volunteers with obvious wrinkles and no damage to healthy skin are screened, wherein 35 women and 15 men are randomly divided into 10 groups, and 5 volunteers in each group are used as test persons, wherein the volunteers are 30-50 years old and have obvious wrinkles on the face and no damage to healthy skin. The subjects used the samples once a day, morning and evening, with a 4 week test period, and all subjects were prescribed 0.8g of test sample per time. During the experiment, the subject was not able to apply any other cosmetic product at the experimental site.

Data acquisition was performed using a skin elasticity meter mpo 580 for the non-use, week 2, and week 4, respectively, with the test site being the forehead and the probe repeatedly measuring 3 times in the same area under test during measurement, and an average was taken. The test parameter is R2 (the ratio of the springback amount Ua of the skin without negative pressure to the maximum stretching amount Uf with negative pressure), the closer R2 is to 1, the better the elasticity of the skin, and the average rate of change (%) of R2 ═ 100% (n-th cycle R2 value-0-th cycle R2 value)/0-th cycle R2 value). The test results are shown in table 3.

Table 3 skin elasticity test results

The experimental results in table 3 show that the change rate of the skin elasticity R2 value gradually increases with the extension of the experimental period, and the change rate of the skin elasticity R2 value is obviously superior to that of the comparative example essence after the essence prepared by the composition of the invention is continuously used for 4 weeks, which indicates that the skin elasticity and firmness can be obviously enhanced and the effects of improving skin relaxation and wrinkles can be achieved by reasonably compounding the aconite leaf cowpea seed extract, the wild soybean seed extract, the date fruit extract, the palmitoyl tripeptide-5, the japanese evening primrose flower extract and the leptochloa extract. The emulsion 5 enables the change rate of the skin elasticity R2 value to reach the maximum value, which shows that when the aconite leaf cowpea seed extract, the wild soybean seed extract, the jujube fruit extract and the Japanese evening primrose flower extract are respectively compounded at a specific ratio, the composition has the best effect of improving the skin elasticity and enables the skin to be more youthful.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims

1. The composition for increasing skin elasticity is characterized by mainly comprising the following components in parts by weight: 5-10 parts of aconite leaf cowpea seed extract, 2-12 parts of wild soybean seed extract, 3-8 parts of date fruit extract, 50.5-3 parts of palmitoyl tripeptide, 35-50 parts of polyhydric alcohol and 26-42 parts of water.

2. The composition for increasing skin elasticity according to claim 1, further comprising 2 to 6 parts of Japanese late cherry blossom extract.

3. The composition for increasing skin elasticity of claim 2, further comprising 1-7 parts of an extract of Sphacelaria scoparia.

4. The composition for increasing skin elasticity according to claim 1, wherein the polyhydric alcohol is one or more of glycerin, butylene glycol and 1, 2-pentanediol.

5. The composition for increasing skin elasticity according to claim 1, wherein the weight ratio of the aconitum carmichaeli seed extract to the wild soybean seed extract is 2: 1.

6. The composition for increasing skin elasticity as claimed in claim 2, wherein the weight ratio of the date fruit extract to the japanese evening primrose flower extract is 1: 1.

7. Use of a composition for increasing skin elasticity according to any one of claims 1 to 6 as a cosmetic additive.

8. The use of a skin elasticity enhancing composition as a cosmetic additive according to claim 7, wherein the composition is present in an amount of 0.5 to 6% by weight.

9. The use of the composition for increasing skin elasticity as a cosmetic additive according to claim 7, wherein the cosmetic is any one of cream, lotion, essence, skin lotion, mask, and gel.