CN111643416B - Whitening and spot-fading mask and preparation method thereof - Google Patents

Abstract

The invention belongs to the technical field of cosmetics, and particularly relates to a whitening and spot-fading mask and a preparation method thereof, wherein the mask takes a tricholoma matsutake extract, an acacia extract, a pentapeptide, a rehmannia extract and a dipotassium glycyrrhizinate compound watercress extract as effective components, so that the problems of tarnish, color spots and the like of the skin can be effectively improved, and the skin can be moisturized and whitened; meanwhile, the preservative composition consisting of the pistachio extract, the phellinus linteus extract and the isoferulic acid is added into the facial mask, the preservative composition has a remarkable inhibiting effect on various common pollution bacteria in cosmetics, the active ingredients are all natural plant ingredients, the skin sensitization is low, the pH tolerance value is wide (3-9), and the quality guarantee period of the facial mask is remarkably prolonged.

Description

Whitening and spot-fading mask and preparation method thereof

Technical Field

The invention belongs to the technical field of cosmetics. More particularly, relates to a whitening and spot-lightening mask and a preparation method thereof.

Background

The research of the existing whitening products tends to natural plant extracts without adverse reactions, the plant extracts have obvious promotion functions on the aspects of improving blood circulation and skin permeability, the metabolic process of melanocytes is accelerated under the condition of not destroying the normal metabolism of the melanin, the physiological cycle of the melanin in the cells is shortened, the melanin is prevented from being excessively deposited to form color spots, and the skin is really healthy and white from inside to outside.

The facial mask is a facial skin cosmetic integrating skin cleaning, skin care, skin nourishing and beauty, and mainly has the following functions: cleaning skin: due to the adsorption and adhesion of the mask on the skin, when the mask is peeled off or washed off, secretions, scurf, dirt and the like on the skin can be peeled off along with the mask; ② skin care and nourishing effect: the facial mask covers the surface of facial skin, inhibits the evaporation of skin moisture, can soften stratum corneum, dilate pores and sweat gland mouths, can raise the surface temperature of the skin, promotes the blood circulation of the facial skin, and enables the skin to effectively absorb active ingredients in the facial mask, thereby playing a good role in protecting and nourishing the skin.

The facial mask contains a large amount of nutritional ingredients, so that bacteria are easy to breed, and the preservative added into the facial mask can prevent the growth of microorganisms, protect products, prolong the shelf life of the products, ensure the safety of the products and prevent possible infection of consumers caused by using the products polluted by the microorganisms.

Currently, the preservatives widely used in the market mainly include parabens, formaldehyde-releasing substances, benzyl alcohol and derivatives thereof, methylisothiazolinone or phenoxyethanol, and the like. However, the chemical preservatives are generally questioned about potential safety problems, and most of the chemical preservatives have narrow pH tolerance, while a few of the preservatives having a wide pH action range, such as quaternary amine-15, Kathon, etc., have skin irritation, and particularly, the quaternary amine-15 has high skin irritation. Therefore, it is important to develop a safe and mild preservative system with wide pH tolerance from natural plants and to improve the preservative capability of the whitening mask.

TABLE 1 cosmetic common preservative types and characteristics

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a whitening and spot-fading mask which contains various whitening plant essences, can be absorbed by skin, enables the skin to be more moist and white, and can effectively solve the problems of rough skin, water shortage and pigmentation.

The invention aims to provide a whitening and spot-lightening mask which comprises the following components in parts by weight: 1-3 parts of polyvinyl alcohol, 1-15 parts of tricholoma matsutake extract, 1-10 parts of acacia extract, 1-3 parts of pentapeptide, 1-10 parts of rehmannia extract, 1-3 parts of dipotassium glycyrrhizinate, 1-5 parts of watercress extract, 0.5-1.0 part of zinc oxide, 0.1-0.3 part of kaolin, 1-3 parts of glycerol, 0.01-1.0 part of antiseptic composition, 0.1-0.3 part of sodium alginate and 40-60 parts of deionized water.

Further, the spot-fading mask comprises the following components in parts by weight: 1-3 parts of polyvinyl alcohol, 5-12 parts of tricholoma matsutake extract, 5-10 parts of acacia extract, 1-3 parts of pentapeptide, 3-10 parts of rehmannia root extract, 1-3 parts of dipotassium glycyrrhizinate, 2-5 parts of watercress extract, 0.5-1.0 part of zinc oxide, 0.1-0.3 part of kaolin, 1-3 parts of glycerol, 0.01-0.6 part of antiseptic composition, 0.1-0.3 part of sodium alginate and 50-60 parts of deionized water.

Further, the spot-fading mask comprises the following components in parts by weight: 3 parts of polyvinyl alcohol, 10 parts of tricholoma matsutake extract, 8 parts of acacia extract, 1.5 parts of pentapeptide, 5 parts of rehmannia extract, 1.5 parts of dipotassium glycyrrhizinate, 3 parts of watercress extract, 0.5 part of zinc oxide, 0.2 part of kaolin, 2 parts of glycerol, 0.2 part of antiseptic composition, 0.2 part of sodium alginate and 50 parts of deionized water.

Further, the spot-fading mask comprises the following components in parts by weight: 3 parts of polyvinyl alcohol, 8 parts of tricholoma matsutake extract, 5 parts of acacia extract, 1 part of pentapeptide, 3 parts of rehmannia extract, 1 part of dipotassium glycyrrhizinate, 5 parts of watercress extract, 0.5 part of zinc oxide, 0.1 part of kaolin, 3 parts of glycerol, 0.1 part of antiseptic composition, 0.3 part of sodium alginate and 45 parts of deionized water.

Further, the spot-fading mask comprises the following components in parts by weight: 2 parts of polyvinyl alcohol, 12 parts of tricholoma matsutake extract, 5 parts of acacia extract, 3 parts of pentapeptide, 5 parts of rehmannia extract, 2.0 parts of dipotassium glycyrrhizinate, 2 parts of watercress extract, 1 part of zinc oxide, 0.3 part of kaolin, 1 part of glycerol, 0.3 part of antiseptic composition, 0.3 part of sodium alginate and 60 parts of deionized water.

Matsutake mushroom extract: researches show that the tricholoma matsutake extract can effectively inhibit the activity of tyrosinase, has better inhibition effect on the tyrosinase than arbutin, can effectively inhibit the activity of the tyrosinase at low concentration (1.0 mass percent), is derived from plants, and has more natural and safer components.

Acacia extract: the Acacia farnesiana extract has good skin refreshing effect, contains abundant antioxidant components, has effects of moistening, moisturizing and relieving skin, and has low risk coefficient and high safety.

Five peptides: palmitoyl pentapeptide-3, pentapeptide can promote collagen to increase skin thickness, has obvious anti-aging effect, and can promote hyaluronic acid and elastic fiber proliferation and effectively activate hyaluronic acid synthesis.

Rehmannia root extract: the rehmannia glutinosa extract has effects of promoting growth of fibrin, enhancing skin metabolism, changing sebum composition, and maintaining excellent moisture absorption capacity in low humidity environment.

The watercress extract: the watery part of the horny layer of the skin can be effectively improved by the watery part of the horny layer of the skin, the watery part of the horny layer of the skin has obvious effect of inhibiting sebum secretion, and the watery part of the horny part of the skin has a prevention effect on acne caused by.

The plant extract and the dipotassium glycyrrhizinate whitening component are cooperated to realize remarkable whitening, spot-lightening and moisturizing effects, and can remarkably improve rough skin, increase skin water content and lighten spots.

Further, the watercress extract is obtained by heating and reflux-extracting 50% ethanol solution as an extraction solvent. The method comprises the following specific steps: weighing a proper amount of watercress, soaking for 0.5h, taking out, adding 50% ethanol solution with the amount of 6-8 times of the raw materials, extracting for 1-3 h at 60-75 ℃, filtering, and removing ethanol under reduced pressure to obtain the watercress extract.

Further, the preservative composition comprises the following components in parts by weight: 1-10 parts of pistachio extract, 1-10 parts of phellinus linteus extract, 1-8 parts of isoferulic acid, 3-20 parts of polyol and 40-60 parts of deionized water.

Further, the preservative composition comprises the following components in parts by weight: 3-8 parts of pistachio extract, 1-6 parts of phellinus linteus extract, 3-5 parts of isoferulic acid, 12-20 parts of polyol and 40-60 parts of deionized water.

Further, the preservative composition comprises 6 parts of pistachio extract, 4 parts of phellinus linteus extract, 4 parts of isoferulic acid, 15 parts of polyol and 50 parts of deionized water.

Further, the preservative composition comprises 5 parts of pistachio extract, 3 parts of phellinus linteus extract, 2 parts of isoferulic acid, 15 parts of polyol and 50 parts of deionized water.

Further, the preservative composition comprises 8 parts of pistachio extract, 5 parts of phellinus linteus extract, 3 parts of isoferulic acid, 15 parts of polyol and 50 parts of deionized water.

Pistachio is a plant of the genus pistacia of the family Anacardiaceae, produced in southwestern and southern Europe of Syria, Iraq and Russia. The pistachio nuts contain much tannin, phthalic acid, gallic acid, catechin, anthocyanin, and the like. The clearance rate of the pistachio alcohol extract on superoxide radical reaches 25.5%; the inhibition rate on lipid peroxidation is 80.8%; has certain antibacterial property on escherichia coli, pseudomonas aeruginosa, staphylococcus aureus and candida albicans; but has poor inhibition effect on common aspergillus niger and the like in cosmetics.

Phellinus linteus is a medicinal fungus belonging to genus Phellinus of family Polyporaceae, and the fruiting body contains mainly morin A and morin B as effective components, and is rich in polysaccharide and proteoglycan. At present, researches indicate that the 0.1mg/mL phellinus linteus water extract has 100 percent of inhibition rate on the release of free histamine and 45 percent of inhibition rate on the ear swelling of mice caused by dimethylbenzene; 0.5mg/mL of the phellinus linteus alcohol extract has the inhibition rate of 45% on the activity of hyaluronidase and the inhibition rate of 40% on the activity of tyrosinase, is mostly applied to cosmetics at present as a skin moisturizing agent and an antiallergic agent, has antibacterial selectivity and the MIC value of 500 mu g/mL on staphylococcus aureus, but has no obvious inhibition effect on common candida albicans, escherichia coli, pseudomonas aeruginosa and mold in cosmetics.

Isoferulic acid is cinnamic acid derivative, can be found in rhizome of Cimicifuga foetida of Ranunculaceae, and is white needle crystal with melting point of 230-236 deg.C and CAS number of 110993-57-2. Studies prove that isoferulic acid has a promoting effect on the activity of glutathione reductase, and the glutathione reductase can convert oxidized glutathione into reducing peptide, has an anti-aging effect, is often used as an antioxidant and a whitening agent, but has no application in the aspect of antibiosis.

The three are not reported as preservatives for cosmetics before the application date, but experiments prove that the preservative composition formed by compounding the extract obtained by step-by-step extraction of ethanol and ethyl acetate, the phellinus linteus extract and isoferulic acid has excellent bacteriostatic effect, has obvious inhibitory effect on escherichia coli, candida albicans, pseudomonas aeruginosa, aspergillus niger and staphylococcus aureus, has good inhibitory effect on bacillus subtilis and widens the antibacterial spectrum of a single component; and the pH tolerance value detection shows that the antiseptic system can play a good antibacterial effect in a pH range of 3-9, and the shelf life of the mask is remarkably prolonged.

Further, the pistachio extract is prepared by the following steps:

s1, taking the pistachio fruits, drying, crushing, adding 80-90% ethanol solution with the amount of 6-10 times of the raw materials, extracting at 70-85 ℃ for 60-100 min, filtering, retaining filter residues, concentrating and removing the solvent to obtain ethanol extract;

s2, taking filter residues, adding ethyl acetate with the weight being 1-5 times that of the filter residues, extracting for 1-3 times, 60-120 min each time, combining, and removing the solvent to obtain ethyl acetate extract;

s3, mixing the ethanol extract obtained in the step S1 and the ethyl acetate extract obtained in the step S2 according to the weight ratio of 3: 1-2, concentrating into suspension, purifying, decoloring and concentrating to obtain an extract, thus obtaining the pistachio extract.

Further, the extraction temperature of the step S1 is 81 ℃; and/or the extraction time is 95 min; and/or the mass fraction of the ethanol solution is 80 percent; the extraction time in step S2 is 80 min.

Further, in the step S3, the ethanol extract and the ethyl acetate extract were mixed at a weight ratio of 3: 2.

Further, the phellinus linteus extract is prepared by the following steps:

taking phellinus linteus sporocarp, crushing the phellinus linteus sporocarp into 20-mesh fine powder, adding deionized water with the weight 6-8 times that of the fine powder, decocting for 3-6 h, centrifuging, taking supernatant, adding 90-100% ethanol solution, precipitating at 4 ℃ overnight, centrifuging, and keeping precipitate; dissolving the precipitate with deionized water, dialyzing, and lyophilizing.

Further, the polyol is composed of caprylyl glycol and 1, 2-pentanediol in a weight ratio of 1: 1.

The invention also aims to provide a method for preparing the whitening and spot-lightening mask, which comprises the following steps:

A) adding deionized water into polyvinyl alcohol and sodium alginate, and heating and swelling completely to obtain a film-forming material for later use;

B) mixing zinc oxide, kaolin and glycerol, grinding uniformly, and adding into the film-forming material to form a mask matrix; adding Tricholoma matsutake extract, Acacia concinna extract, WUJIANGJIAO, rehmanniae radix extract, herba Dolichoris extract, dipotassium glycyrrhizinate, and antiseptic composition into the above matrix, and stirring.

The invention has the following beneficial effects:

1) the mask prepared by the invention has proper viscosity and good film forming speed, contains various whitening plant essences, can effectively improve the problems of tarnish, color spots and the like of the skin, and enables the skin to be more moisturized and white.

2) The facial mask disclosed by the invention is added with the preservative composition consisting of the pistachio extract, the phellinus linteus extract and isoferulic acid, the preservative composition has a remarkable inhibition effect on various common pollution bacteria in cosmetics, the active ingredients are all natural plant ingredients, the skin sensitization is low, the pH tolerance value is wide (3-9), and the shelf life of the facial mask is remarkably prolonged.

Detailed Description

The present invention is further illustrated by the following specific examples, which are not intended to limit the invention in any way. Reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.

Unless otherwise indicated, reagents and materials used in the following examples are commercially available.

Example 1 preparation of pistachio extract

S1, drying the pistachio fruits, crushing, adding 80% ethanol solution with the amount 8 times of the raw materials, extracting at 81 ℃ for 95min, filtering, retaining filter residues, and concentrating to remove the solvent to obtain ethanol extract;

s2, taking filter residues, adding ethyl acetate with the amount 5 times that of the filter residues for extraction for 2 times, each time for 80min, combining, and removing the solvent to obtain ethyl acetate extract;

s3, mixing the ethanol extracting solution obtained in the step S1 and the ethyl acetate extracting solution obtained in the step S2 according to the weight ratio of 3:2, concentrating the mixture into a suspension, purifying the suspension by polyamide resin, decoloring the purified suspension by using activated carbon, and concentrating the purified suspension to obtain an extract, namely the pistachio extract.

Example 2 preparation of pistachio extract

S1, drying the pistachio fruits, crushing, adding 90% ethanol solution with the amount 8 times of the raw materials, extracting at 81 ℃ for 95min, filtering, retaining filter residues, and concentrating to remove the solvent to obtain ethanol extract;

s2, taking filter residues, adding ethyl acetate with the amount 5 times that of the filter residues for extraction for 3 times, 75min each time, combining, and removing the solvent to obtain ethyl acetate extract;

s3, mixing the ethanol extracting solution obtained in the step S1 and the ethyl acetate extracting solution obtained in the step S2 according to the weight ratio of 3:1, concentrating the mixture into a suspension, purifying the suspension by polyamide, decoloring the purified suspension by using activated carbon, and concentrating the purified suspension to obtain an extract, namely the pistachio extract.

Example 3 preparation of pistachio extract

S1, drying the pistachio fruits, crushing, adding 85% ethanol solution with the amount 8 times of the raw materials, extracting at 81 ℃ for 100min, filtering, retaining filter residues, and concentrating to remove the solvent to obtain ethanol extract;

s2, taking filter residues, adding ethyl acetate with the amount 5 times that of the filter residues for extraction for 2 times, each time for 80min, combining, and removing the solvent to obtain ethyl acetate extract;

s3, mixing the ethanol extracting solution obtained in the step S1 and the ethyl acetate extracting solution obtained in the step S2 according to the weight ratio of 3:1.5, concentrating to obtain suspension, purifying the suspension by polyamide, decoloring by adopting activated carbon after purification, and concentrating to obtain an extract, namely the pistachio extract.

Example 4 preparation of Phellinus linteus extract

Pulverizing Phellinus linteus fruiting body into 20 mesh fine powder, adding deionized water 6 times the weight of the fine powder, decocting for 4 hr, centrifuging, collecting supernatant, adding 90% ethanol solution, precipitating at 4 deg.C overnight, centrifuging, and keeping precipitate; dissolving the precipitate with deionized water, dialyzing, and lyophilizing.

EXAMPLES 5 TO 7 ANTICORROSIVE COMPOSITIONS AND THEIR PARTS (IN weight portions)

Group of	Pistachio extract	Phellinus linteus extract	Isoferulic acid	Polyhydric alcohols	Water (W)
						Example 5	5	3	2	15	50
Example 6	8	5	3	15	50
						Example 7	6	4	4	15	50
Comparative example 1	16	-	-	15	50
						Comparative example 2	-	16	-	15	50
Comparative example 3	-	-	16	15	50

Note: wherein the polyhydric alcohol consists of caprylyl glycol and 1, 2-pentanediol in a weight ratio of 1: 1; the extract of pistachio described in example 6 was the extract of pistachio prepared in example 1, and the extracts of pistachio prepared in examples 2 and 3 were used in examples 5 and 7, respectively.

Comparative example 4: comparative example 4 is different from example 6 in that the pistachio extract is composed of only the ethanol extract prepared in step S1.

Example 8 ~10 whitening and spot-lightening mask and parts by weight thereof

Components	Example 8	Example 9	Example 10
				Polyvinyl alcohol	3	3	2
Tricholoma matsutake extract	10	8	12
				Acacia extract	8	5	5
Wushengtai	1.5	1	3
				Rehmannia glutinosa extract	5	3	5
Glycyrrhizic acid dipotassium salt	1.5	1	2
				Watercress extract	3	5	2
Zinc oxide	0.5	0.5	1
				Kaolin clay	0.2	0.1	0.3
Glycerol	2	3	1
				Preservative composition	0.2	0.1	0.3
Sodium alginate	0.2	0.3	0.5
				Deionized water	50	45	60

Note: the antiseptic composition in the facial mask in the embodiment 8-10 is the antiseptic composition in the embodiment 5-7 correspondingly.

The preparation method comprises the following steps:

A) adding deionized water into polyvinyl alcohol and sodium alginate, and heating and swelling completely to obtain a film-forming material for later use;

B) mixing zinc oxide, kaolin and glycerol, grinding uniformly, and adding into the film-forming material to form a mask matrix; adding Tricholoma matsutake extract, Acacia concinna extract, WUJIANGJIAO, rehmanniae radix extract, herba Dolichoris extract, dipotassium glycyrrhizinate, and antiseptic composition into the above matrix, and stirring.

Test example one, patch test

The examples 5 to 7 and comparative examples 1 to 3 were prepared as antiseptic compositions, 30 volunteers were selected as subjects, and the sensitization of the samples was measured (the same batch of subjects was used for the samples). Placing 0.02g of sample into a patch applicator, placing the control hole as a blank control (no any substance is placed), applying the patch applicator with the sample to the back of a subject by using a hypoallergenic adhesive tape, wherein the test area is at least 5 x 5cm, allowing the subject to sit straight when applying, applying the patch from the lower part to the upper part, and slightly pressing the adhesive tape with palm to discharge air to make the adhesive tape tightly adhere to the skin for 24 hours; and (3) judging and reading 30min and 48h after the patch applicator is removed according to the following judging standard, and counting test results, wherein the test results are shown in the following table 2.

Interpretation criteria: (one) negative reaction; (+ -suspicious reaction: only mild erythema; (+) weak positive: erythema, infiltrates, and possibly small amounts of papules; strong positive (++): erythema, infiltrates, papules, blisters; (+++) very positive: erythema, infiltrates, papules, blisters, bulla.

TABLE 2 Patch test results

Group of	Negative/rate	Weak positive/rate	Strong positive/rate	Very strong positive/rate	Positive rate
						Example 5	30/100％	0/0	0/0	0/0	0
Example 6	30/100％	0/0	0/0	0/0	0
						Example 7	30/100％	0/0	0/0	0/0	0
Comparative example 1	26/86.7％	2/6.7％	2/6.7％	0/0	13.3％
						Comparative example 2	29/96.7％	1/3.3％	0/0	0/0	3.3％
Comparative example 3	24/80.0％	2/6.7％	3/10.0％	1/3.3％	20.0％

As can be seen from the above table, the antiseptic compositions described in examples 5 to 7 of the present invention were not sensitive to the skin, and no positive reaction was detected in 30 subjects; from the results of comparative example 1 and comparative example 3, it is clear that the pistachio extract and isoferulic acid have high irritation to the skin, particularly isoferulic acid, and 6 (20.0%) of 30 subjects detected positive reaction, while the phellinus linteus extract has a certain anti-allergy effect and low irritation to the skin.

Test example two, MIC value test

The antiseptic compositions of examples 5-7 and comparative examples 1-4 are used as samples, and the minimum inhibitory concentration MIC value of each sample is tested by a broth dilution method, wherein the test method comprises the following steps: diluting the above samples by two-fold dilution method with sterilized nutrient broth and Sabouraud's medium as dilution system to obtain dilution solutions with serial concentrations, inoculating Escherichia coli 1 × 10⁸cfu/mL, Staphylococcus aureus 1X 10⁸cfu/mL, Candida albicans 1X 10⁶cfu/mL, Pseudomonas aeruginosa 1X 10⁷cfu/mL Aspergillus niger 1X 10⁵cfu/mL and Bacillus subtilis 1X 10⁶cfu/mL, bacteria at 35 degrees C cultured for 36h, fungi at 28 degrees C cultured for 48h after observation. The test results are shown in table 3 below.

TABLE 3 MIC values for the samples

As can be seen from table 3 above, the pistachio extract has excellent inhibitory effects on escherichia coli, staphylococcus aureus, candida albicans and pseudomonas aeruginosa, and has weak inhibitory effects on aspergillus niger and bacillus subtilis; the phellinus linteus extract shows antibacterial selectivity, has certain inhibitory effect on staphylococcus aureus, has an MIC value of 500 mu g/mL, has certain inhibitory effect on other two bacteria, but has slightly poor inhibitory effect on fungi (candida albicans and aspergillus niger); isoferulic acid has no obvious inhibition effect on bacteria and fungi; surprisingly, the preservative compositions of examples 5 to 7 formed by compounding the pistachio extract, the phellinus linteus extract and the isoferulic acid have excellent inhibition effects on common bacteria and fungi in cosmetics, and a certain synergistic effect can be seen in the bacteriostasis aspect of the three extracts.

Test example III Effect of different pH on antimicrobial Activity of preservative compositions

The pH values of the anticorrosive compositions of example 6 and comparative example 1 are adjusted to 2, 3, 4, 5, 6, 7, 8, 9 and 10, and the test results of the bacteriostatic circle diameter test are shown in the following tables 4 to 6.

TABLE 4 comparison of the average zone of inhibition of Escherichia coli by different pH antiseptic compositions

TABLE 5 comparison of the average zone of inhibition of Candida albicans by different pH antiseptic compositions

TABLE 6 comparison of the average zone of inhibition of Pseudomonas aeruginosa by different pH antiseptic compositions

As can be seen from tables 4-6 above, the pistachio extract has good inhibitory effect on Escherichia coli, Candida albicans and Pseudomonas aeruginosa within the range of 6-8; the preservative composition of example 6, which is compounded with the phellinus linteus extract and isoferulic acid, has excellent antibacterial effects on escherichia coli, candida albicans and pseudomonas aeruginosa within a range of 3-9, and compared with a single component, the compounded preservative composition can still maintain higher antibacterial activity at different pH values, and can be applied to different types of cosmetics.

Test example four, whitening test

Practical application tests are carried out by adopting the facial mask disclosed by the embodiment 8-10 of the invention. Selecting 60 effective healthy subjects, randomly dividing the subjects into 3 groups, wherein each group comprises 20 persons, the facial features of the subjects are yellowish, dull or colored skin, and the age distribution is 25-45 years old. The whole face of the subject was used as the test site, the facial mask was used according to the conventional method, and the skin of the face of the subject was tested for L and b values using the minolta analyzer CN2600D before use and at 1 week and 4 week after use of the sample, and the results are shown in table 7 below.

The L value represents the brightness, the range is 0-100, the darkest is 0, the brightest is 100, and the higher the L value is, the higher the brightness of the skin is; b is the color change from blue to yellow, with lower b indicating lower yellowness of the skin.

Table 7 whitening test results

Note: compared with the application for 0 week,^*P＜0.05，^**P＜0.01。

as can be seen from table 7 above, after the facial masks of examples 8 to 10 of the present invention are used, the L value and the b value of the face both significantly change (P is less than 0.05) compared to those before use at week 4, and the change results indicate that the facial radiance is significantly improved and the yellowness is significantly reduced at week 4 after use, indicating that the facial masks of examples 8 to 10 have significant whitening and spot-lightening effects.

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 (6)

1. The whitening spot-lightening mask is characterized by comprising the following components in parts by weight: 1-3 parts of polyvinyl alcohol, 1-15 parts of tricholoma matsutake extract, 1-10 parts of acacia extract, 1-3 parts of pentapeptide, 1-10 parts of rehmannia extract, 1-3 parts of dipotassium glycyrrhizinate, 1-5 parts of watercress extract, 0.5-1.0 part of zinc oxide, 0.1-0.3 part of kaolin, 1-3 parts of glycerol, 0.01-1.0 part of antiseptic composition, 0.1-0.3 part of sodium alginate and 40-60 parts of deionized water; the anticorrosive composition comprises the following components in parts by weight: 1-10 parts of an pistachio extract: 1-10 parts of phellinus linteus extract: 1-8 parts of isoferulic acid: 3-20 parts of polyol: 40-60 parts of deionized water;

the pistachio extract is prepared by the following steps:

s1, taking the pistachio fruits, drying, crushing, adding 80-90% ethanol solution with the amount of 6-10 times of the raw materials, extracting at 70-85 ℃ for 60-100 min, filtering, retaining filter residues, concentrating and removing the solvent to obtain ethanol extract;

s2, taking filter residues, adding ethyl acetate with the weight being 1-5 times that of the filter residues, extracting for 1-3 times, 60-120 min each time, combining, and removing the solvent to obtain ethyl acetate extract;

s3, mixing the ethanol extract obtained in the step S1 and the ethyl acetate extract obtained in the step S2 according to the weight ratio of 3: 1-2, concentrating into suspension, purifying, decoloring and concentrating to obtain an extract to obtain the pistachio extract;

the phellinus linteus extract is prepared by the following steps:

taking phellinus linteus sporocarp, crushing the phellinus linteus sporocarp into 20-mesh fine powder, adding deionized water with the weight 6-8 times that of the fine powder, decocting for 3-6 h, centrifuging, taking supernatant, adding 90-100% ethanol solution, precipitating at 4 ℃ overnight, centrifuging, and keeping precipitate; dissolving the precipitate with deionized water, dialyzing, and lyophilizing to obtain the final product;

the polyalcohol consists of octyl glycol and 1, 2-pentanediol according to the weight ratio of 1: 1.

2. The whitening spot-lightening mask as claimed in claim 1, which is prepared from the following components in parts by weight: 1-3 parts of polyvinyl alcohol, 5-12 parts of tricholoma matsutake extract, 5-10 parts of acacia extract, 1-3 parts of pentapeptide, 3-10 parts of rehmannia root extract, 1-3 parts of dipotassium glycyrrhizinate, 2-5 parts of watercress extract, 0.5-1.0 part of zinc oxide, 0.1-0.3 part of kaolin, 1-3 parts of glycerol, 0.01-0.6 part of antiseptic composition, 0.1-0.3 part of sodium alginate and 50-60 parts of deionized water.

3. The whitening spot-lightening mask as claimed in claim 1 or 2, wherein the watercress extract is obtained by heating and reflux-extracting a 50% ethanol solution as an extraction solvent.

4. The whitening spot-lightening mask of claim 1, wherein the extraction temperature of the step S1 is 81 ℃; the extraction time is 95 min; the mass fraction of the ethanol solution is 80 percent; the extraction time in step S2 is 80 min.

5. The whitening spot-lightening mask of claim 1, wherein in the step S3, the ethanol extract and the ethyl acetate extract are mixed in a weight ratio of 3: 2.

6. A method for preparing the whitening and spot-lightening mask as claimed in any one of claims 1 to 5, which comprises the following steps:

A) adding deionized water into polyvinyl alcohol and sodium alginate, and heating and swelling completely to obtain a film-forming material for later use;

B) mixing zinc oxide, kaolin and glycerol, grinding uniformly, and adding into the film-forming material to form a mask matrix; adding Tricholoma matsutake extract, Acacia concinna extract, WUJIANGJIAO, rehmanniae radix extract, herba Dolichoris extract, dipotassium glycyrrhizinate, and antiseptic composition into the above matrix, and stirring.