CN111281844A - Compound natural extract spot-fading mask and preparation method thereof - Google Patents

Abstract

The invention discloses a compound natural extract spot-fading mask and a preparation method thereof, wherein the compound natural extract spot-fading mask comprises, by weight, 2-5 parts of grape seed procyanidin, 5-10 parts of pachymaran, 5-10 parts of agaric extracting solution, 10-15 parts of bletilla striata extracting solution, 15-20 parts of Chinese aloe gel, 1-2 parts of stabilizer and 1-2 parts of acidity regulator. The facial mask product contains high-concentration alkaloids, polysaccharides, hydroxyproline, flavonoids and phenolic active substances, and has good whitening, antioxidant, moisturizing and after-sun repairing effects, strong stability and good absorption effect. The facial mask prepared by the formula has the effects of nature, no stimulation, freckle removal, repair, wrinkle removal and the like, and the adopted auxiliary materials can further improve the effects of the main components of various facial masks, so that the facial mask has popularization and application values.

Description

Compound natural extract spot-fading mask and preparation method thereof

Technical Field

The invention belongs to the technical field of cosmetics, and particularly relates to a compound natural extract speckle-reducing facial mask and a preparation method thereof.

Background

The natural product skin care product is mainly a cosmetic prepared by adding natural raw material extracts obtained by refining after certain technical treatment into raw materials used for production. Plants, animals and microorganisms belong to the main sources of extracts added in natural product skin care products, and the plant extracts are most widely used in the extracts and are successfully applied to the fields of food, pharmacy, beauty and skin care and the like. In recent years, the consumer market occupied by natural product skin care products with antioxidant, moisturizing, sunscreen, whitening and other effects is gradually expanding.

Chloasma is a common chronic symmetrical facial pigment metabolic disturbance disease and is clinically characterized by symmetrical light brown pigmentation of the face, irregular shapes of stains and no obvious subjective symptoms. Its color spots are often distributed on the face, forehead, cheeks, chin, etc. The modern pathogenesis research of chloasma is not completely clear, and the chloasma is generally accepted to be related to mechanisms such as ultraviolet irradiation, unbalance of oxidation and antioxidant systems, level disorder of estrogen and progestogen, damaged skin barrier, local small blood vessel dilatation and hyperplasia, local skin inflammation generation and the like. However, no specific, safe and effective treatment method has been found in view of the unknown pathogenesis, and the treatment of chloasma is still a challenge.

Yunnan belongs to the high-altitude area ultraviolet radiation very strong, and the skin can appear the condition such as lack of water red swelling, melanin deposit after the sun-cured, therefore to sun-cured repair, whitening and moisturizing of sun-block agent, the demand of the skin care products that show the light spot effect totally is bigger.

Disclosure of Invention

The first purpose of the invention is to provide a compound natural extract spot-lightening mask; the second purpose is to provide a preparation method of the compound natural extract speckle-reducing facial mask.

The first purpose of the compound natural extract spot-fading mask is achieved by including, by weight, 2-5 parts of grape seed procyanidin, 5-10 parts of pachyman, 5-10 parts of agaric extracting solution, 10-15 parts of bletilla striata extracting solution, 15-20 parts of Chinese aloe gel, 1-2 parts of stabilizer and 1-2 parts of acidity regulator.

The second object of the present invention is achieved by comprising the steps of:

1) mixing grape seed procyanidin, nostoc commune extract, bletilla striata extract, pachyman and aloe vera gel in a formula ratio to obtain a material a;

2) mixing and stirring the material a and the emulsifier, adding water which is 1-2 times of the weight of the material a while mixing and stirring, and uniformly mixing to obtain an emulsion I;

3) uniformly mixing and stirring the thickening agent, the humectant, the emulsifier, the pH regulator and the additive to obtain a mixture II;

4) and stirring and mixing the emulsion I and the mixture II uniformly to obtain the mask essence, and preparing the mask essence into a spot-lightening mask product.

The invention takes grape seed procyanidin as monarch drug, poria cocos, nostoc commune and bletilla striata as ministerial drug, aloe as adjuvant drug, and the preparation method of the facial mask essence is as follows: (1) crushing grape seeds, extracting with 65% ethanol, filtering, performing rotary evaporation and concentration, freeze-drying, purifying by a column, and determining by high performance liquid chromatography to obtain grape seed procyanidin with purity of more than 99%; (2) preparing grape seed procyanidin, pachyman, nostoc commune extract, bletilla striata extract and aloe vera gel by the methods of claims 4, 5, 6, 7 and 8. (3) Mixing grape seed procyanidin, pachyman, nostoc commune extract and bletilla striata extract, namely Chinese aloe gel according to an experimentally optimized formula; (4) mixing the obtained mixture with emulsifier Tween, jojoba oil and/or borage oil and/or evening primrose oil, stirring, and adding water to obtain emulsion I; (5) mixing and stirring a thickening agent, a humectant, an emulsifier, a pH regulator and an additive to obtain a mixture II; (6) the emulsion I is added into the obtained mixture II, and after the mixture I is uniformly stirred, the facial mask essence is obtained. The facial mask prepared by the formula has the effects of nature, no stimulation, freckle removal, repair, wrinkle removal and the like, and the adopted auxiliary materials can further improve the effects of the main components of various facial masks, so that the facial mask has popularization and application values.

In the method of the invention:

procyanidine is a novel natural plant extract with whitening and antioxidant effects, and is a natural antioxidant. It is identified as the substance with the strongest ability of resisting oxidation and removing free radicals in human body which can be extracted in the world at present. The procyanidin extracted from grape seed can eliminate and resist free radicals generated by human body, and is effective

The skin care product containing the procyanidine can be contacted with the skin and can shrink pores and tighten the skin, so that the skin is moist, fresh and not thick. Can reasonably utilize the advantages of natural and wide geographic resources in China to develop various skin care products containing procyanidin.

Nostoc commune (N)ostoc commune Vauch.) Is a Colony type (Colony) in Nostoc, and the algae filament is composed of 50-170 vegetative cells and heteromorphic cells. The agaric extract can be eaten and used as a medicine, and in recent years, people find that the agaric extract has inhibition effects on protease activity, growth of human nasopharyngeal carcinoma cells and rectal cancer cells and fungi, and also has the functions of resisting oxidation, fixing nitrogen and protecting ultraviolet rays. Therefore, the nostoc commune is algae with theoretical research value and wide development prospect.

Poria (Poria cocos)Wolfiporia cocos) The main records on health preservation and beauty are as follows: 'Anhui, nourishing spirit, not hunger, prolonging life' for long-time taking ', nourishing spirit and beautifying colour'. Poria enters the spleen and kidney meridians, and also enters the heart meridian. In beauty treatment, tuckahoe, which is good at removing dampness, emphasizes on eliminating facial skin edema, removing dampness and dissolving turbidity, improving dark face and lightening color spots. Modern pharmacological research finds that pachyman and tuckahoe triterpenes can improve the cold resistance, fatigue resistance and aging resistance of animals. Hydroxyproline in Poria can increase collagen fiber in skin to achieve the effect of delaying skin aging. Poria cocos can regulate tyrosinase RNA expression at gene transcription level, inhibit enzyme protein biosynthesis, and has speckle reducing effect.

Bletilla striata (Bletilla striata (Thunb.)Rchb. f.) Is a traditional Chinese medicine resource used as both medicine and food, and has the efficacies of astringency and astringency, entering lung to stop bleeding, promoting tissue regeneration and treating soreBletilla striata is a good beautifying medicine from ancient times, is known as 'whitening faecum', has the effects of whitening, removing freckles, resisting oxidation, removing wrinkles, fading acne marks, preventing chaps and the like, bletilla striata enters lung channels, belongs to the lung in white, the lung mainly plays a role in fur, can directly act on skin after external application, assists poria cocos, exerts the effects of whitening, removing freckles and moistening and beautifying, and is a ministerial medicine 'black face washing and freckles removing' cloud from the compendium of materia medica, modern pharmacological research shows that β -polyglucose in bletilla striata polysaccharide can stimulate the release of macromolecular metalloproteinase, reduce cytokine loss caused by solar radiation, repair skin, relax and compact skin and enable skin to be rich in elasticity.

Chinese aloe (A)aloeveral.var.chinesis(haw) Is widely applied to the cosmetic industry, and aloe facial masks, aloe gel and the like are more endless. Aloe polysaccharide is a large class of macromolecular compounds with different physiological functions, mainly mannan, but the compositions of polysaccharides in different varieties of aloe are different. Modern pharmacological research finds that the aloe polysaccharide has various pharmacological effects of resisting tumor, regulating immunity, resisting mutation, resisting radiation, resisting aging, resisting ulcer, resisting endotoxin, reducing toxicity, enhancing efficacy and the like in tumor chemotherapy; the Chinese aloe polysaccharide has better in-vitro antioxidant activity and has obvious dosage effect on the scavenging capacity of DPPH free radicals.

The spot-fading gel-like facial mask is prepared by taking grape seed procyanidin, nostoc commune, poria cocos, bletilla striata and aloe extracts as main components, optimizing a formula and a process, developing a spot-fading gel-like facial mask with the effects of moisturizing, whitening, resisting oxidation, preventing sun and repairing after sun exposure, and evaluating the properties of the spot-fading gel-like facial mask. The method can promote the resource development of aloe, nostoc commune, bletilla striata and poria cocos, promote the local economy to flourish, enrich the deep processing product types of grape seed procyanidin, aloe, nostoc commune, bletilla striata and poria cocos, increase the product categories of the natural medicine mask market, and develop a more humanized, green and popular traditional Chinese medicine mask for consumers.

Detailed Description

The present invention is further illustrated by the following examples, which are not intended to be limiting in any way, and any modifications or alterations based on the teachings of the present invention are intended to fall within the scope of the present invention.

The compound natural extract spot-fading mask comprises, by weight, 2-5 parts of grape seed procyanidine, 5-10 parts of pachyman, 5-10 parts of nostoc commune extract, 10-15 parts of bletilla striata extract, 15-20 parts of Chinese aloe gel, 1-2 parts of a stabilizer and 1-2 parts of an acidity regulator.

The purity of the grape seed procyanidin is more than 99%.

The grape seed procyanidin is prepared by crushing grape seeds, sieving with a 10-mesh sieve, adding 60-70% ethanol solution with volume concentration 3-8 times of solid-liquid volume of the grape seeds, leaching for 24-72 hours, filtering, carrying out rotary evaporation concentration, freeze-drying and column chromatography purification, and thus obtaining the grape seed procyanidin with purity of more than 99%.

The pachymaran is prepared by crushing poria cocos, sieving with a 10-mesh sieve, adding a sodium hydroxide solution with the molar concentration of 0.65-0.85 mol/L, the volume of which is 30-50 times of the solid-liquid volume of the poria cocos, carrying out ultrasonic extraction for 4-6 min, extracting for 7-10 h at the temperature of 3-5 ℃, then carrying out centrifugal treatment, and collecting the supernatant; and (3) adjusting the pH value of the supernatant to 6-7 by using 10% acetic acid, then carrying out centrifugal treatment to collect lower-layer precipitates, and repeatedly washing the precipitates for 2-4 times by using distilled water for desalting to obtain the target pachyman.

The method comprises the following steps of (1) crushing nostoc commune, sieving with a 10-mesh sieve, adding absolute ethyl alcohol with the solid-liquid volume 5-10 times of that of the nostoc commune, leaching in a constant-temperature water bath at 30-50 ℃ for 8-12 hours to obtain a sample solution, filtering the sample solution to obtain a filtrate a and a filter residue b, adding absolute ethyl alcohol with the solid-liquid volume 3-5 times of that of the filter residue b into the filter residue b, leaching in a constant-temperature water bath at 30-40 ℃ for 8-12 minutes, and filtering again to obtain a filtrate c and a filter residue c; and mixing the filtrate a and the filtrate c, and performing rotary evaporation concentration at the temperature of 50-60 ℃ to obtain the target product namely the agaric extracting solution.

The bletilla striata extracting solution is prepared by taking bletilla striata powder, adding distilled water which is 15-25 times of the solid-liquid volume of the bletilla striata powder, carrying out ultrasonic extraction for 4-6 min, carrying out soaking extraction for 20-40 min at room temperature, then carrying out leaching for 1-2 h in a constant-temperature water bath at 60-80 ℃ to obtain a water extracting solution a, carrying out centrifugation on the water extracting solution a to collect supernatant, and concentrating the supernatant in a boiling water bath to obtain a target bletilla striata extracting solution.

The aloe vera gel is prepared by taking fresh leaves of aloe vera, peeling, washing with tap water until no yellow liquid exists, cutting into small pieces, putting the small pieces into a juicer to squeeze an aloe vera stock solution, adjusting the pH to 4-6, filtering twice with four layers of gauze, and filtering twice with eight layers of gauze to obtain the target aloe vera gel.

The stabilizer is konjac glucomannan, tween, span, magnesium stearate, xanthan gum, β -glucan, sorbitol fatty acid ester or konjac powder.

The acidity regulator is citric acid, acetic acid, potassium citrate, tripotassium phosphate, succinic acid or tartaric acid.

The preparation method of the compound natural extract speckle-lightening mask comprises the following steps:

1) mixing grape seed procyanidin, nostoc commune extract, bletilla striata extract, pachyman and aloe gel in a formula ratio to obtain a material a;

2) mixing and stirring the material a and the emulsifier, adding water which is 1-2 times of the weight of the material a while mixing and stirring, and uniformly mixing to obtain an emulsion I;

3) uniformly mixing and stirring the thickening agent, the humectant, the pH regulator and the additive to obtain a mixture II;

4) and stirring and mixing the emulsion I and the mixture II uniformly to obtain the mask essence, and preparing the mask essence into a spot-lightening mask product.

The invention is further illustrated by the following specific examples:

example 1

A compound natural extract speckle-reducing facial mask is prepared from 2% grape seed procyanidin, 10% pachyman, 10% agaric extract, 14% bletilla striata extract, 15% aloe gel, 5% jojoba oil, 0.08% tween + span, 1% olive oil + glycerol, 1.10% konjac glucomannan, 0.40% propyl hydroxybenzoate, 0.5% xanthan gum, 1.5% β -dextran, 2% trehalose, 2.5% sorbitol fatty acid ester, 0.5% citric acid, and 34.42% purified water.

The preparation process of the mask essence comprises the following steps:

crushing grape seeds, extracting with 65% ethanol, filtering, performing rotary evaporation concentration, freeze-drying, purifying by a column, and determining by high performance liquid chromatography to obtain grape seed procyanidin with purity of more than 99%;

step two, preparing agaric extracting solution, bletilla striata extracting solution, pachyman and Chinese aloe gel by adopting different methods;

mixing grape seed procyanidin, pachyman, agaric extracting solution, bletilla striata extracting solution and aloe gel according to a formula ratio to obtain a raw material mixture;

step four, preparing 1.0000g of olive oil and glycerol compound liquid according to the proportion of 1: 1; preparing 1.0000g of Tween 80 and span 80 compound solution according to the ratio of 2: 1; adding tween + span, olive oil + glycerol and jojoba oil into the raw material mixture obtained in the step three according to a ratio, mixing and stirring, and adding water while mixing and stirring to obtain emulsion I;

adding propyl p-hydroxybenzoate into purified water according to a ratio, stirring at 50 ℃ for dissolving, then adding konjac glucomannan, trehalose and sorbitol fatty acid ester, mixing at 90 ℃ and 500r/min, and stirring for 10min to obtain a mixture II;

step six, adding the emulsion I into the obtained mixture II, and stirring uniformly to obtain a mixture III;

seventhly, adding xanthan gum and β -glucan into the obtained mixture III, mixing and stirring at 40 ℃ and 500r/min for 15min to obtain mask essence;

and step eight, preparing the prepared facial mask essence by matching with common facial mask base cloth on the market, such as non-woven fabric, silk base cloth, concept invisible silk base cloth, tencel or bamboo charcoal fiber base cloth, biological fiber or viscose fiber base cloth and the like to obtain a compound natural extract spot-fading facial mask product, wherein the product has a good spot-fading effect because the essence on the facial mask base cloth is more and can be absorbed by the skin more easily.

Detecting the appearance and aroma of the facial mask essence according to QB/T2872-2017; mercury, lead, arsenic, total bacterial colonies, total mould and yeast, fecal escherichia coli, staphylococcus aureus and pseudomonas aeruginosa were detected according to QB/T2872-2017, and the detection results are shown in Table 1:

TABLE 1 analysis results of each physical and chemical index

As can be seen from the detection results in table 1, the facial mask essence prepared in this example has acceptable sensory and hygienic chemical indicators.

Example 2

A compound natural extract speckle-reducing facial mask is prepared from 5% grape seed procyanidin, 10% pachyman, 10% radix Sangusorbae extractive solution, 14% rhizoma Bletillae extractive solution, 15% Aloe gel, 5% jojoba oil, 0.08% Tween + span, 1% oleum Olivarum + glycerol, 1.10% konjac glucomannan, 0.40% propyl hydroxybenzoate, 0.5% xanthan gum, 1.5% β -dextran, 2% trehalose, 2.5% sorbitol fatty acid ester, 0.5% citric acid, and 31.42% purified water.

The preparation process of the mask essence comprises the following steps:

crushing grape seeds, extracting with 65% ethanol, filtering, performing rotary evaporation concentration, freeze-drying, purifying by a column, and determining by high performance liquid chromatography to obtain grape seed procyanidin with purity of more than 99%; peeling Aloe chinensis, cleaning with tap water until there is no yellow liquid, cutting into small pieces, squeezing with a juicer to obtain Aloe stock solution, filtering with four layers of gauze twice, and filtering with eight layers of gauze twice to obtain Aloe gel.

Step two, preparing agaric extracting solution, bletilla striata extracting solution, pachyman and Chinese aloe gel by adopting different methods;

mixing grape seed procyanidin, pachyman, agaric extracting solution, bletilla striata extracting solution and aloe gel according to a formula ratio to obtain a mixture;

step four, preparing 1.0000g of olive oil and glycerol compound liquid according to the proportion of 1: 1; preparing 1.0000g of Tween 80 and span 80 compound solution according to the ratio of 2: 1; adding tween + span, olive oil + glycerol and jojoba oil into the raw material mixture obtained in the step three according to a ratio, mixing and stirring, and adding water while mixing and stirring to obtain emulsion I;

adding propyl p-hydroxybenzoate into purified water according to a ratio, stirring at 50 ℃ for dissolving, then adding konjac glucomannan, trehalose and sorbitol fatty acid ester, mixing at 90 ℃ and 500r/min, and stirring for 10min to obtain a mixture II;

step six, adding the emulsion I into the obtained mixture II, and stirring uniformly to obtain a mixture III;

seventhly, adding xanthan gum and β -glucan into the obtained mixture III, mixing and stirring at 40 ℃ and 500r/min for 15min to obtain mask essence;

and step eight, preparing the prepared facial mask essence by matching with common facial mask base cloth on the market, such as non-woven fabric, silk base cloth, concept invisible silk base cloth, tencel or bamboo charcoal fiber base cloth, biological fiber or viscose fiber base cloth and the like to obtain a compound natural extract spot-fading facial mask product, wherein the product has a good spot-fading effect because the essence on the facial mask base cloth is more and can be absorbed by the skin more easily.

The sensory index and the hygienic chemical index of the mask essence prepared in the embodiment are both qualified, and the testing method is the same as that of the embodiment 1.

Example 3

A compound natural extract speckle-reducing facial mask is prepared from 5% grape seed procyanidin, 10% pachyman, 10% agaric extract, 10% bletilla striata extract, 15% aloe gel, 5% jojoba oil, 0.08% tween + span, 1% olive oil + glycerol, 1.10% konjac glucomannan, 0.40% propyl hydroxybenzoate, 0.5% xanthan gum, 1.5% β -dextran, 2% trehalose, 2.5% sorbitol fatty acid ester, 0.5% citric acid, and 35.42% purified water.

The preparation process of the mask essence comprises the following steps:

crushing grape seeds, extracting with 65% ethanol, filtering, performing rotary evaporation concentration, freeze-drying, purifying by a column, and determining by high performance liquid chromatography to obtain grape seed procyanidin with purity of more than 99%;

step two, preparing agaric extracting solution, bletilla striata extracting solution, pachyman and Chinese aloe gel by adopting different methods;

mixing grape seed procyanidin, pachyman, agaric extracting solution, bletilla striata extracting solution and aloe gel according to a formula ratio to obtain a mixture;

step four, preparing 1.0000g of olive oil and glycerol compound liquid according to the proportion of 1: 1; preparing 1.0000g of Tween 80 and span 80 compound solution according to the ratio of 2: 1; adding tween + span, olive oil + glycerol and jojoba oil into the raw material mixture obtained in the step three according to a ratio, mixing and stirring, and adding water while mixing and stirring to obtain emulsion I;

adding propyl p-hydroxybenzoate into purified water according to a ratio, stirring at 50 ℃ for dissolving, then adding konjac glucomannan, trehalose and sorbitol fatty acid ester, mixing at 90 ℃ and 500r/min, and stirring for 10min to obtain a mixture II;

step six, adding the emulsion I into the obtained mixture II, and stirring uniformly to obtain a mixture III;

seventhly, adding xanthan gum and β -glucan into the obtained mixture III, mixing and stirring at 40 ℃ and 500r/min for 15min to obtain mask essence;

and step eight, preparing the prepared facial mask essence by matching with common facial mask base cloth on the market, such as non-woven fabric, silk base cloth, concept invisible silk base cloth, tencel or bamboo charcoal fiber base cloth, biological fiber or viscose fiber base cloth and the like to obtain a compound natural extract spot-fading facial mask product, wherein the product has a good spot-fading effect because the essence on the facial mask base cloth is more and can be absorbed by the skin more easily.

The sensory index and the hygienic chemical index of the mask essence prepared in the embodiment are both qualified, and the testing method is the same as that of the embodiment 1.

The performance tests of examples 1-3 are shown in Table 2:

TABLE 2 detection of various properties of the mask

Test example 1

Comparative example 1 was set up, and differs from example 1 in that jojoba oil was not added.

Comparative example 2 was set up, differing from example 1 in that no citric acid was added.

Evaluation tests are carried out on the facial masks prepared in the examples 1-3 and the comparative examples 1-2, 10 volunteers with chloasma on the faces are selected, the ages of the volunteers are 25-30 years old, the ratio of male to female is 1:1, the volunteers are randomly divided into A-D groups, and each group is one male and one female; in 2 weeks before the test, products and the like are not used, and the detection is carried out once per week; the mask is attached every 2 days during the test, each time is 15min, the test is carried out once every week, the test is carried out for 3 weeks continuously, and other similar products are not replaced or used together during the test period; wherein the facial mask used in group a was the facial mask prepared in example 1, the facial mask used in group B was the facial mask prepared in example 2, the facial mask used in group C was the facial mask prepared in example 3, the facial mask used in group D was the facial mask prepared in comparative example 1, and the facial mask used in group E was the facial mask prepared in comparative example 2; the reaction condition of the coated skin is observed 1h after cleaning every day, test evaluation is respectively carried out on volunteers, wherein the highest score is 5 scores, the lowest score is 0 score, and the evaluation result is shown in table 3.

TABLE 3 speckle removing function test record

Note: + positive results in a spot-lightening effect (smaller spots or lighter or both spots are present), -negative results in a less pronounced spot-lightening effect.

As can be seen from the above table, the masks prepared in examples 1 to 3 have excellent moisturizing properties, uv protection, tyrosinase activity inhibition, DPPH radical scavenging effects, and thus have excellent spot-fading effects; as can be seen from comparative example 1, the jojoba oil stabilizer is not added, so that the active substances of all natural extracts are partially deactivated, and the speckle-fading effect of the product is obviously reduced; as can be seen from comparative example 2, the low acid environment maintained by citric acid can maintain the activity of grape seed procyanidin, and the activity is obviously reduced without adding grape seed procyanidin, so that the antioxidant effect is reduced, and the spot-fading effect is reduced.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims (10)

1. The compound natural extract spot-fading mask is characterized by comprising, by weight, 2-5 parts of grape seed procyanidin, 5-10 parts of pachyman, 5-10 parts of agaric extracting solution, 10-15 parts of bletilla striata extracting solution, 15-20 parts of Chinese aloe gel, 1-2 parts of stabilizer and 1-2 parts of acidity regulator.

2. The compound natural extract speckle-reducing facial mask as claimed in claim 1, wherein the purity of the grape seed procyanidin is above 99%.

3. The compound natural extract speckle-reducing mask as claimed in claim 1 or 2, wherein the grape seed procyanidin is obtained by crushing grape seeds, sieving with a 10-mesh sieve, adding 60-70% ethanol solution with volume concentration 3-8 times of solid-liquid volume of the grape seeds, leaching for 24-72 h, filtering, rotary steaming, concentrating, freeze-drying and purifying with a column to obtain grape seed procyanidin with purity of more than 99%.

4. The compound natural extract speckle-reducing mask as claimed in claim 1, wherein the pachyman is prepared by pulverizing Poria cocos, sieving with a 10-mesh sieve, adding a sodium hydroxide solution with a molar concentration of 0.65-0.85 mol/L, which is 30-50 times of the solid-liquid volume of Poria cocos, performing ultrasonic extraction for 4-6 min, extracting for 7-10 h at 3-5 ℃, then performing centrifugal treatment, and collecting the supernatant; and (3) adjusting the pH value of the supernatant to 6-7 by using 10% acetic acid, then carrying out centrifugal treatment to collect lower-layer precipitates, and repeatedly washing the precipitates for 2-4 times by using distilled water for desalting to obtain the target pachyman.

5. The compound natural extract spot-fading mask as claimed in claim 1, wherein the nostoc commune extract is obtained by crushing nostoc commune, sieving with a 10-mesh sieve, adding absolute ethyl alcohol which is 5-10 times of the solid-liquid volume of the nostoc commune, leaching for 8-12 h in a constant-temperature water bath at 30-50 ℃ to obtain a sample solution, filtering the sample solution to obtain a filtrate a and a filter residue b, adding absolute ethyl alcohol which is 3-5 times of the solid-liquid volume of the filter residue b into the filter residue b, leaching for 8-12 min in a constant-temperature water bath at 30-40 ℃ and filtering again to obtain a filtrate c and a filter residue c; and mixing the filtrate a and the filtrate c, and performing rotary evaporation concentration at the temperature of 50-60 ℃ to obtain the target product namely the agaric extracting solution.

6. The compound natural extract speckle-reducing facial mask as claimed in claim 1, wherein the bletilla striata extract is prepared by taking bletilla striata powder, adding distilled water 15-25 times of the solid-liquid volume of the bletilla striata powder, carrying out ultrasonic extraction for 4-6 min, carrying out soaking extraction for 20-40 min at room temperature, then carrying out leaching in a constant temperature water bath at 60-80 ℃ for 1-2 h to obtain a water extract a, centrifuging the water extract a to collect supernatant, and concentrating the supernatant in a boiling water bath to obtain the target bletilla striata extract.

7. The compound natural extract spot-fading mask as claimed in claim 1, wherein the aloe vera gel is prepared by taking fresh leaves of aloe vera, peeling, washing with tap water until no yellow liquid is available, cutting into small pieces, squeezing into aloe vera stock solution in a juicer, adjusting the pH to 4-6, filtering twice with four layers of gauze, and filtering twice with eight layers of gauze to obtain the target aloe vera gel.

8. The compound natural extract speckle-reducing mask as claimed in claim 1, wherein the stabilizer is konjac glucomannan, tween, span, magnesium stearate, xanthan gum, β -dextran, sorbitol fatty acid ester or konjac flour.

9. The compound natural extract speckle-reducing mask as claimed in claim 1, wherein the acidity regulator is citric acid, acetic acid, potassium citrate, tripotassium phosphate, succinic acid or tartaric acid.

10. A method for preparing a compound natural extract speckle-reducing facial mask as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps:

1) mixing grape seed procyanidin, nostoc commune extract, bletilla striata extract, pachyman and aloe gel in a formula ratio to obtain a material a;

2) mixing and stirring the material a and the emulsifier, adding water which is 1-2 times of the weight of the material a while mixing and stirring, and uniformly mixing to obtain an emulsion I;

3) uniformly mixing and stirring the thickening agent, the humectant, the emulsifier, the pH regulator and the additive to obtain a mixture II;

4) and stirring and mixing the emulsion I and the mixture II uniformly to obtain the mask essence, and preparing the mask essence into a spot-lightening mask product.