CN113827526A

CN113827526A - Exfoliating foot mask and preparation method thereof

Info

Publication number: CN113827526A
Application number: CN202111294117.1A
Authority: CN
Inventors: 梁帼英; 梁帼麾; 许哲明; 李懿君
Original assignee: Shanghai Orange Fruit Bioengineering Co ltd
Current assignee: Shanghai Orange Fruit Bioengineering Co ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2021-12-24

Abstract

The application relates to the technical field of cosmetics, in particular to a cutin-removing foot mask and a preparation method thereof. The cutin-removing foot mask consists of the following components in percentage by weight: 0.1-1.0% of pineapple ferment, 0.1-1.0% of lactic acid, 0.05-0.5% of salicylic acid, 0.2-2.0% of glycolic acid, 1.0-10.0% of isopropanol, 1.0-10.0% of glycerol, 0.1-1.0% of sodium lactate, 100.1-1.0% of polyquaternium, 0.1-1.0% of hydroxyethyl cellulose, 2-6.0% of humectant, 0.1-1.0% of propylene glycol, 0.1-1.0% of phenoxyethanol, 0.1-1.0% of ethylhexylglycerol, 0.1-1.0% of ethanol and the balance of water; the cutin removing foot mask is mild and non-irritant to skin, can strengthen metabolism of old waste cutin, promotes removal and shedding of scleroderma callosity, and has a moisturizing effect on sole skin.

Description

Exfoliating foot mask and preparation method thereof

Technical Field

The application relates to the technical field of cosmetics, in particular to a cutin-removing foot mask and a preparation method thereof.

Background

The stratum corneum is the outermost part of the epidermis and is composed of mainly 10-20 flat, dead cells without nuclei. The dead cells are removed along with the metabolism of skin cells of people, and the cells at the bottom of the basal layer are pushed up to form a new stratum corneum. The stratum corneum, which is the outermost part of the epidermis, has the functions of protecting the subcutaneous tissues, preventing dehydration of the subcutaneous tissues, and keeping the skin moist.

The metabolism speed of skin cells of a human body is slowed due to the influence of a plurality of factors such as aging, incomplete cleaning, sunshine, oil production, change of work and rest of people, weather change and the like, so that dead cells cannot naturally fall off and are thickly accumulated on the surface of the skin, and the stratum corneum is thickened. If the thickened cuticle is not cleaned in time, the applied skin care product can be blocked by the excessively thick cuticle, and the skin care product cannot be absorbed by subcutaneous tissues, so that the skin is dry, rough and dull.

Because of the importance placed on skin, many exfoliating products are available on the market. For example, foot membranes for removing foot cutin. However, the foot membranes for exfoliating the cutin, which are commonly used in the market at present, are all used for softening the cutin layer by using a large amount of fruit acid to exfoliate the cutin layer, and although the foot membranes can achieve a good exfoliating effect, the foot membranes have certain irritation to the skin.

Disclosure of Invention

In order to remove the aged horny layer of the foot and reduce the irritation to the skin, the present application provides an exfoliating foot mask and a method of preparing the same.

In a first aspect, the application provides an exfoliating foot mask, which adopts the following technical scheme:

the cutin-removing foot mask comprises the following components in percentage by weight:

0.1-1.0% of pineapple enzyme;

0.1-1.0% of lactic acid;

0.05-0.5% of salicylic acid;

0.2-2.0% of glycolic acid;

1.0-10.0% of isopropanol;

1.0-10.0% of glycerol;

0.1-1.0% of sodium lactate;

100.1-1.0% of polyquaternium;

0.1-1.0% of hydroxyethyl cellulose;

2-6.0% of a humectant;

0.1-1.0% of propylene glycol;

0.1-1.0% of phenoxyethanol;

0.1 to 1.0% of ethylhexyl glycerin;

0.1-1.0% of ethanol;

the balance of water.

Generally, fruit acid has a keratolytic effect, but in order to improve the keratolytic effect, the content of fruit acid is high, which causes a large irritation to the skin. By adopting the technical scheme, the pineapple enzymes have a synergistic effect after being compounded with the lactic acid, the salicylic acid and the glycolic acid in percentage by weight, and can permeate into a bottom layer of old skin which is piled for a long time on the premise of reducing the usage amount of the acid in a foot membrane, so that hard skin, calluses and cracked dead skin of soles are softened, the metabolism of old waste cutin is enhanced, the removal and falling of the hard skin calluses are promoted, and the regeneration effect of the hard skin and the dead skin of the calluses is reduced. But also has the function of moisturizing the skin on the soles of the feet, and can better prevent the dryness, roughness, chap and bleeding of the soles of the feet. Therefore, the cutin-removing foot mask obtained by the application can well remove the aged cutin layer of the foot, and is mild and non-irritant to the skin.

Preferably, the adding amount of the ethanol is 0.5 percent by weight.

By adopting the technical scheme, the ethanol is used as an accelerant, and has a synergistic effect with the propylene glycol and the glycerol under the addition amount, so that the foot membrane obtained by skin absorption can be promoted, and the softening effect of the horny layer and the removing effect of the horny layer are improved. And the ethanol content is low, so that the irritation to the skin can be reduced, and the foot mask is ensured to have safe use performance. Meanwhile, the ethanol can also promote the compounding effect of lactic acid, salicylic acid, glycolic acid and pineapple ferment, and improve the softening capacity, the dead skin peeling capacity and the moisturizing capacity of the cuticle of the obtained foot mask.

Preferably, the preparation steps of the pineapple ferment are as follows:

a1: preparing pineapple green juice: peeling and cleaning pineapples, mixing and pulping pineapples and water according to the weight ratio of 1 (2-4) to obtain pineapple pulp, performing enzymolysis on the pineapple pulp, centrifuging, layering, wherein the upper layer is pineapple green juice, the lower layer is pineapple residue, and collecting the upper pineapple green juice;

a2: saccharifying pineapple green juice: adjusting the pH value of the pineapple green juice to 5-6, adding white granulated sugar to adjust the sugar degree of the pineapple green juice to 20-22%, and sterilizing to obtain saccharified pineapple green juice;

a3: fermenting the saccharified pineapple green juice: adjusting the temperature of the saccharified pineapple green juice to 25-30 ℃, inoculating saccharomycetes into the saccharified pineapple green juice, and sealing and fermenting for 8-10 hours at 25-30 ℃; then adjusting the temperature of the saccharified pineapple green juice to 35-39 ℃, inoculating lactobacillus plantarum into the pineapple green juice, and carrying out sealed fermentation for 2-4 hours at 35-39 ℃ to obtain pineapple ferment;

the inoculation amount of the microzyme is 0.3-0.5 g/100mL of saccharified pineapple green juice;

the inoculation amount of the lactobacillus plantarum is 2-4 g/100mL of saccharified pineapple green juice.

By adopting the technical scheme, the pineapple juice is fermented by inoculating saccharomycetes and then inoculating lactobacillus plantarum, and the activity of protease in the pineapple juice is highest and the fermentation effect on the pineapple juice is strongest in the fermentation process under the specific pH value, temperature and time. The reason for this analysis may be that yeast and lactobacillus plantarum form a symbiotic mechanism during fermentation, nutritional factors such as protease and lipase secreted by yeast can promote the fermentation of lactobacillus plantarum, and substances such as lactate metabolized by lactobacillus plantarum can be used by yeast. Therefore, the fermentation mode of inoculating saccharomycetes and then inoculating lactobacillus plantarum is the highest in protease activity and the best in pineapple juice fermentation capacity. The obtained pineapple ferment has stronger compounding effect with lactic acid, salicylic acid and glycolic acid, not only improves the exfoliating capability and moisturizing capability of the finally obtained foot mask, but also is mild and non-irritant to the skin.

Preferably, in the preparation step A3 of the pineapple ferment, the inoculation amount of the yeast is 0.3-0.4 g/100mL of the saccharified pineapple green juice; the inoculation amount of the lactobacillus plantarum is 2-3 g/100mL of saccharified pineapple green juice.

By adopting the technical scheme, the inoculation amount of the yeast and the lactobacillus plantarum is optimized, the symbiotic mechanism formed by the yeast and the lactobacillus plantarum in the fermentation process is balanced, the activity of the protease is the highest, and the fermentation capacity of the pineapple juice is the strongest. After the finally obtained pineapple ferment is compounded with lactic acid, salicylic acid and glycolic acid, the obtained foot membrane has stronger capability of removing cuticle and moisturizing, can better prevent pachylosis and cracking bleeding of soles, and has the advantages of being mild and non-irritant to skin.

Preferably, in the preparation step A3 of the pineapple ferment, the temperature of the saccharified pineapple green juice is adjusted to 25-28 ℃, saccharomycetes are inoculated into the saccharified pineapple green juice, and the pineapple green juice is hermetically fermented for 8-9 hours at 25-28 ℃; and adjusting the temperature of the saccharified pineapple green juice to 37-39 ℃, inoculating lactobacillus plantarum into the pineapple green juice, and sealing and fermenting at 37-39 ℃ for 3-4 hours to obtain the pineapple ferment.

By adopting the technical scheme, under the inoculation temperature, the fermentation temperature and the fermentation time of the yeast and the lactobacillus plantarum, the growth performance of the yeast and the lactobacillus plantarum is good, the activity of protease in the fermentation process is highest, the obtained pineapple ferment has stronger compounding capability with lactic acid, salicylic acid and glycolic acid, the capability of removing the cuticle of the foot membrane and the moisturizing capability are favorably improved, and the pineapple ferment is mild and has no stimulation to the skin.

Preferably, in the preparation step a1 of the pineapple ferment, before the enzymolysis of the pineapple pulp, the pineapple ferment is further subjected to homogenization treatment, wherein the homogenization rotation speed is 200-400 r/min, the homogenization temperature is 40-50 ℃, and the homogenization time is 1-2 hours.

By adopting the technical scheme, after the pineapple pulp is homogenized under the homogenization condition, the dispersibility of the pineapple pulp can be improved, and the subsequent enzymolysis effect on the pineapple pulp is favorably improved due to the fact that the pineapple pulp is heated within the homogenization temperature, so that the synergistic effect of the obtained pineapple ferment, lactic acid, salicylic acid and glycolic acid is improved, the cutin removing capability and the moisture preserving capability of the obtained foot mask are improved, and the foot mask is mild and non-irritant to skin.

Preferably, in the preparation step a3 of the pineapple ferment, the pineapple ferment obtained is further subjected to filtration treatment.

Through adopting above-mentioned technical scheme, through the step that increases filtration treatment, can obviously reduce the suspended solid or the sediment in the pineapple ferment to promote the fine and smooth sense of using the sufficient membrane of pineapple ferment gained, improve consumer's use and experience.

Preferably, the humectant is prepared by mixing cucumber fruit extract and aloe vera, and the weight ratio of the cucumber fruit extract to the aloe vera is 1 (0.8-1.2).

By adopting the technical scheme, the cucumber fruit extract contains rich vitamin E, and the aloe vera contains aloe polysaccharide and derivatives thereof, amino acid and the like, and the cucumber fruit extract and the aloe vera are compounded and then used in the foot mask, so that the water absorption performance of skin keratinized tissue can be enhanced, and the effects of anti-allergy, relieving, anti-inflammation and moisturizing can be achieved on the skin.

In a second aspect, the application provides a method for preparing an exfoliating foot mask, which adopts the following technical scheme:

a preparation method of an exfoliating foot mask comprises the following steps:

s1: stirring and mixing salicylic acid and ethanol to obtain a salicylic acid-ethanol mixture;

s2: mixing glycolic acid, lactic acid, isopropanol, glycerol, sodium lactate, polyquaternium-10, hydroxyethyl cellulose and water at 80-85 deg.C under stirring for 30-50min, and keeping the temperature for 25-35 min; sequentially adding salicylic acid-ethanol mixture, humectant, pineapple ferment, phenoxyethanol and ethylhexylglycerin at 30-40 deg.C, stirring, mixing, and discharging.

Through adopting above-mentioned technical scheme, this application not only makes pineapple ferment and salicylic acid, lactic acid, glycolic acid intensive mixing under certain temperature and time, has still reduced wherein some partially can not melt into the base member solution completely and cause the condition of partial nutrition to take place. The preparation method is simple, has low condition requirement and can be used for large-scale stable preparation.

In summary, the present application has the following beneficial effects:

1. according to the application, pineapple ferment, lactic acid, salicylic acid and glycolic acid are compounded to achieve a synergistic effect, so that on the premise of reducing the usage amount of acid in the foot membrane, metabolism of old waste cutin can be enhanced, removal and falling of hard skin calluses are promoted, the foot membrane has a moisturizing effect on the skin of the foot bottom, and the dryness, roughness and cracking bleeding of the foot bottom can be well prevented, so that the cutin-removed foot membrane obtained by the application can well remove the aged cuticle of the foot on the premise of ensuring the mildness and no stimulation to the skin;

2. in the fermentation step of pineapple juice in this application, inoculate the plant lactobacillus through inoculating the yeast earlier again for the protease activity of pineapple juice in fermentation process is the highest, and the performance of gained pineapple ferment is best, is favorable to improving pineapple ferment and lactic acid, salicylic acid, glycolic acid's compound synergistic effect ability, thereby improves and gets rid of cutin, moisturize and the effect that does not have the stimulation to foot skin.

3. According to the method, through the stepwise addition, the pineapple ferment, the salicylic acid, the lactic acid and the glycolic acid are fully mixed, and the condition that partial nutrition is lost due to the fact that partial groups of pineapple ferment cannot be completely dissolved into a matrix solution is reduced.

Detailed Description

The present application will be described in further detail with reference to examples.

The raw materials used in the examples of the present application are commercially available, except for the following specific descriptions:

the keratodermia-removed tunica pedis membranes obtained in examples 1 to 20 and comparative examples 1 to 3 were used for skin sensitization test, skin stratum corneum texture influence test, and skin moisture content test, and the test criteria are as follows.

Subject selection: according to the selection standard of the testees in the safety evaluation of human trial test in 2015 cosmetic safety technical Specification, 110 testees are randomly selected and averagely divided into 20 groups of 5 testees.

The using method comprises the following steps: after the testee washes feet, the corresponding cutin removing membrane foot mask is applied to the skin of the feet, the application thickness is 0.2-0.4 cm, and after standing for 15min, the skin of the feet is cleaned.

The using time is as follows: the test period of the test subjects was 28 days, and the use time of each time was: day 7, day 14, day 21 and day 28. During the test period, the use of other foot skin care products was prohibited.

Firstly, detecting skin sensitization: after the test, the use feeling of the subject was asked with reference to the safety evaluation of human trial test in 2015 "technical specification for cosmetic safety", and the skin reaction grading standard in table 1 was used for grading, and the grading results were averaged.

TABLE 1 human trial test skin response grading Standard

Skin reactions	Grading
		No reaction	0
Weak erythema	1
		Erythema, infiltrates, papules	2
Erythema, edema, papules, blisters	3
		Erythema, edema, bulla	4

Test results of skin sensitization test: after the subjects continuously used the exfoliating foot membranes obtained in examples 1 to 20 and comparative examples 1 to 3 four times, the subjects using the foot membranes obtained in examples 1 to 20 and comparative examples 2 to 3 gave a rating of 0 and the subjects using the exfoliating foot membrane obtained in comparative example 1 gave a rating of 2. Therefore, the exfoliating foot mask obtained in the examples 1 to 20 and the comparative examples 2 to 3 has no irritation to skin and is a safe daily use cosmetic. The exfoliating foot mask of comparative example 1 has a certain irritation to the skin.

Secondly, the detection principle of the texture influence of the skin cuticle is as follows: the skin surface texture test system Visioscan VC20plus is adopted: the skin exfoliation stratum corneum was shown as bright white in 256 black and white grey levels and the software analyzed various parameters of the skin surface. Live skin surfaces are imaged directly by this unique high resolution ultraviolet light imaging system.

Skin stratum corneum texture influence detection: before test of a subject, firstly, a Visioscan VC20plus instrument is combined with a sticky patch method to collect a Sesc (sticky patch scale peeling degree) index, the influence of the composition on the texture of the stratum corneum of the skin is inspected, and the value is recorded as a 0 th Sesc value; after each use of the test subject, a Visioscan VC20plus instrument is combined with a sticky patch method to collect a Sesc (sticky patch scale peeling degree) index, the influence of the composition on the texture of the skin stratum corneum is examined and recorded as an Nth Sesc value, and the measurement results are averaged, wherein N is 7, 14, 21 and 28.

The specific detection method comprises the following steps: the loose stratum corneum and the texture of the skin were adhesively attached by the adhesive patch method (corneofix), and analyzed by photographing with VisioScan VC20plus to obtain the stratum corneum occupancy of different levels of pixel amounts, and the exfoliating/keratinocyte renewal promoting effect of the product was evaluated by collecting Sesc (flaking scale).

Testing indexes are as follows: sesc (degree of sticky flake scale peeling): the smaller the Sesc value, the less desquamation of the stratum corneum and the faster metabolism, the more watery and smooth the skin and the healthier the skin barrier.

Thirdly, detecting the moisture content of the skin: the moisture content of the skin of the feet of the test subjects before the test was measured by a skin elasticity meter Cotomermapa 580 of CK company, Germany, and is recorded as the 0 th skin moisture content, wherein the negative pressure during the test was constant at 450 mbar. After the testee uses the water content of the foot skin of the testee again, the water content of the foot skin is recorded as the Nth time of the skin water content, and the measurement results are averaged, wherein N is 7, 14, 21 and 28.

Examples

Example 1

An exfoliating foot mask, the components and their respective weights are shown in table 2 and is prepared by the following steps:

s1: stirring and mixing salicylic acid and ethanol to obtain salicylic acid-ethanol mixed solution;

s1: mixing glycolic acid, lactic acid, water, isopropanol, glycerol, sodium lactate, polyquaternium, and hydroxyethyl cellulose at 80 deg.C and 1000r/min under stirring for 30min, and keeping the temperature for 30min to obtain a mixed solution; adjusting the temperature of the mixed solution to 40 ℃, adding the salicylic acid-ethanol mixed solution, the humectant, the phenoxyethanol, the ethylhexyl glycerin, the propylene glycol and the pineapple ferment, stirring and mixing at 1000r/min for 40min, and discharging.

Wherein the humectant is fructus Cucumidis Sativi extract;

pineapple ferment type BL-10, purchased from Olympic Biotechnology Limited, safe in Western;

examples 2 to 4

An exfoliating foot mask, as compared to example 1, except that the components and their respective weights are as shown in table 1.

TABLE 2 Components and weights (kg) thereof in examples 1 to 4

Selecting 4 groups of subjects, respectively using the exfoliating foot membranes obtained in the examples 1-4, wherein the test period of the subjects is 28 days, and the using time of each time is as follows: day 7, day 14, day 21 and day 28. After each use, subjects were subjected to skin stratum corneum texture impact test and skin moisture content test, the test results were averaged, and the percentage of reduction in the Sesc value from the Sesc value at day 0 and the percentage of increase in the skin moisture content from the skin moisture content at day 0 were calculated and the calculation results are shown in table 3. The calculation formula is as follows:

the percentage of relative decrease in the Sesc value was (day 0 assay result-day N assay result)/day 0 assay result was 100%

Relative increase in skin moisture content (test results on day N-test result on day 0)/test result on day 0%

N is 7, 14, 21 and 28.

TABLE 3 test results of examples 1 to 4

And (4) surface note: the smaller the Sesc value is, the less desquamation of the stratum corneum is shown, the faster the metabolism is, the more moist and smooth the skin is reflected on the side surface, and the healthier the skin barrier is; the higher the relative increase percentage of the skin moisture content, the higher the skin moisture content of the feet.

As can be seen from table 3, the exfoliated foot membranes obtained in examples 1 to 4 showed a significant decrease in Sesc values on the 7 th, 14 th, 21 st and 28 th days, compared to the 0 th day, as demonstrated by the test for detecting the influence of texture on the stratum corneum and the test for detecting the moisture content in the skin of the subject; the skin moisture levels increased significantly on days 7, 14, 21 and 28. Therefore, the exfoliating foot mask obtained in the embodiment 1-4 not only promotes the metabolism of old waste cutin, but also has the effects of moisturizing the skin of the foot sole on the premise of reducing the using amount of acid, and can better prevent the dry and rough foot sole and the cracking bleeding. The reason for analyzing the effect is probably because the pineapple ferment has a synergistic effect after being compounded with the lactic acid, the salicylic acid and the glycolic acid, the use amount of the acid can be reduced, and the obtained cutin-removing foot mask not only has a good cutin-removing effect, but also can reduce the stimulation to the skin.

Examples 5 to 8

An exfoliating foot mask as in example 3, except that the total raw materials for preparing the exfoliating foot mask were the same as in example 3 except that the weights of ethanol and water were different. The weight of ethanol is shown in table 4.

TABLE 4 compositions and weights (kg) thereof in examples 5 to 8

Selecting 4 groups of subjects, respectively using the exfoliating foot membranes obtained in the examples 5-8, wherein the test period of the subjects is 28 days, and the using time of each time is as follows: day 7, day 14, day 21 and day 28. After each use, the subjects were subjected to a test for skin stratum corneum texture effect and a test for skin moisture content, the test results were averaged, and the percentage of decrease in the Sesc value from the Sesc value at day 0 and the percentage of increase in the skin moisture content from the skin moisture content at day 0 were calculated. The results of the calculations are included in table 5 below.

TABLE 5 test results of examples 5 to 8

As can be seen from table 5, compared to example 3, in examples 5 to 8, ethanol was further added to the total raw materials for preparing the exfoliating foot membranes, and it was found that the Sesc values of the exfoliating foot membranes obtained by the test of the influence of the texture of the skin stratum corneum and the test of the skin moisture content of the subjects were significantly reduced on the 7 th, 14 th, 21 th and 28 th days, respectively, compared to the 0 th day; the skin moisture levels increased significantly on days 7, 14, 21 and 28. Therefore, the total raw materials for preparing the exfoliating foot mask are added with ethanol, so that the metabolism of old waste cutin can be promoted, the softening effect of the keratolytic layer and the removing effect of the keratolytic layer are improved, and the moisturizing effect of skin can be improved.

The reason for this analysis may be that ethanol, as an enhancer, has a synergistic effect with propylene glycol and glycerin, and can promote skin absorption of the resulting foot membranes. Meanwhile, the ethanol can also promote the compounding effect of lactic acid, salicylic acid, glycolic acid and pineapple ferment, and improve the softening capacity, the dead skin peeling capacity and the moisturizing capacity of the cuticle of the obtained foot mask. And because the ethanol content is lower, the irritation to the skin can be reduced, and the foot mask is ensured to have safer use performance.

In particular, the exfoliating foot membranes obtained in example 7 of the present application have better softening ability to the horny layer of the foot, exfoliating ability to dead skin, and moisturizing ability than the exfoliating foot membranes obtained in examples 5, 6, and 8.

Example 9

An exfoliating foot mask, which is different from that of example 7 in that except that pineapple ferment is self-made, is the same as that of example 7.

The preparation method of the pineapple ferment comprises the following steps:

a1: preparing pineapple green juice: peeling and cleaning the pineapple, mixing and pulping the pineapple and water according to the weight ratio of 1:3 to obtain pineapple pulp; taking 100mL of pineapple pulp, adding 200 mu L of pectinase into 100mL of pineapple pulp, and carrying out enzymolysis at 55 ℃ for 15min to obtain the pineapple pulp subjected to enzymolysis; centrifuging the pineapple pulp at 10000r/min for 20min, layering to obtain green pineapple juice at the upper layer and pineapple residue at the lower layer, and collecting green pineapple juice at the upper layer;

a2: saccharifying pineapple green juice: adding citric acid into 100mL of pineapple green juice to adjust the pH value of the pineapple green juice to 5, adding white granulated sugar to adjust the sugar degree of the pineapple green juice to 20%, and sterilizing at 100 ℃ for 1h to obtain saccharified pineapple green juice;

a3: fermenting the saccharified pineapple green juice: taking 100mL of saccharified pineapple green juice, adjusting the temperature of the saccharified pineapple green juice to 25 ℃, inoculating saccharomycetes into the saccharified pineapple green juice, and sealing and fermenting for 8 hours at the temperature of 25 ℃; then regulating the temperature of the saccharified pineapple green juice to 37 ℃, inoculating lactobacillus plantarum into the saccharified pineapple green juice, and carrying out sealed fermentation for 3 hours at the temperature of 37 ℃ to obtain pineapple ferment;

the inoculation amount of the microzyme is 0.3g/100mL of saccharified pineapple green juice;

the inoculation amount of the lactobacillus plantarum is 2g/100mL of saccharified pineapple green juice.

Examples 10 to 12

An exfoliating foot mask, which is different from example 7 in that it is the same as example 7 except that the inoculum size of yeast and lactobacillus plantarum is different in the pineapple ferment preparation process a 3. The amounts of yeast and lactobacillus plantarum are shown in table 6.

TABLE 6 inoculation amounts of Yeast and Lactobacillus plantarum in examples 9-12

4 groups of subjects were selected and the exfoliating foot membranes obtained in examples 9-12 were used respectively, the test period of the subjects was 28 days, and the use time of each time was: day 7, day 14, day 21 and day 28. After each use, the subjects were subjected to a test for skin stratum corneum texture effect and a test for skin moisture content, the test results were averaged, and the percentage of decrease in the Sesc value from the Sesc value at day 0 and the percentage of increase in the skin moisture content from the skin moisture content at day 0 were calculated. The results of the calculations are included in table 7 below.

TABLE 7 test results of examples 9 to 12

As can be seen from table 7, compared to example 7, the desquamation foot membranes obtained in examples 9 to 12 using the home-made pineapple enzymes showed significantly decreased Sesc values on the 7 th, 14 th, 21 st and 28 th days compared to the 0 th day, as shown by the skin stratum corneum texture effect test and the skin moisture content test of the subjects; the skin moisture levels increased significantly on days 7, 14, 21 and 28. Therefore, the pineapple ferment obtained by inoculating saccharomycetes and then inoculating lactobacillus plantarum for fermentation in the total raw materials of the cutin-removing foot mask is stronger in compounding effect with lactic acid, salicylic acid and glycolic acid, and the cutin-removing capability and the water replenishing and moisturizing capability of the finally obtained foot mask are improved.

In particular, the exfoliating foot films obtained in examples 9 to 11 were superior in exfoliating ability and moisturizing ability. The reason for this analysis may be that, in the preparation process of the pineapple ferment, the inoculation amount of the yeast is 0.3-0.4 g/100mL of the saccharified pineapple green juice, and the inoculation amount of the lactobacillus plantarum is 2-3 g/100mL of the saccharified pineapple green juice, so that the obtained pineapple ferment has good performances.

Examples 13 to 15

An exfoliating foot membrane, which is different from example 11 in that, except that the pineapple ferment preparation process a3, the inoculation temperature and fermentation time of yeast and lactobacillus plantarum are different, it is the same as example 11. The inoculation temperature and fermentation time of yeast and lactobacillus plantarum are shown in table 8.

TABLE 8 inoculation temperature and fermentation time of Yeast and Lactobacillus plantarum in examples 13-15

Selecting 3 groups of subjects, respectively using the exfoliating foot membranes obtained in the examples 13-15, wherein the test period of the subjects is 28 days, and the using time of each time is as follows: day 7, day 14, day 21 and day 28. After each use, the subjects were subjected to a test for skin stratum corneum texture effect and a test for skin moisture content, the test results were averaged, and the percentage of decrease in the Sesc value from the Sesc value at day 0 and the percentage of increase in the skin moisture content from the skin moisture content at day 0 were calculated. The results of the calculations are included in table 9 below.

TABLE 9 test results of examples 13 to 15

As can be seen from table 9, in comparison with example 11, in examples 13 to 15, in the preparation process of pineapple ferment, the pineapple ferment obtained by optimizing the inoculation temperature and fermentation time of yeast and lactobacillus plantarum is used for preparing an exfoliating foot membrane, and the Sesc values of the test subjects on the 7 th day, the 14 th day, the 21 st day and the 28 th day are obviously reduced compared with those on the 0 th day through the test of skin stratum corneum texture influence and the test of skin moisture content detection; the skin moisture levels increased significantly on days 7, 14, 21 and 28.

Therefore, in the preparation step A3 of the pineapple ferment, the temperature of the saccharified pineapple green juice is adjusted to be 25-30 ℃, saccharomycetes are inoculated into the saccharified pineapple green juice, and the pineapple green juice is hermetically fermented for 8-10 hours at the temperature of 25-30 ℃; and then adjusting the temperature of the saccharified pineapple green juice to 35-39 ℃, inoculating lactobacillus plantarum into the pineapple green juice, and performing sealed fermentation for 2-4 hours at 35-39 ℃, so that the final pineapple ferment has a stronger compounding effect with lactic acid, salicylic acid and glycolic acid, and the cutin removing capability and the water replenishing and moisturizing capability of the finally obtained foot mask are improved.

In particular, the exfoliating foot films obtained in examples 11 to 14 were more excellent in exfoliating ability and moisturizing ability. The reason for this may be that, in the preparation step a3 of pineapple ferment, when the inoculation amount of the yeast is 0.3-0.4 g/100mL of saccharified pineapple green juice and the inoculation amount of the lactobacillus plantarum is 2-3 g/100mL of saccharified pineapple green juice, the obtained pineapple ferment has a better compounding effect with lactic acid, salicylic acid and glycolic acid.

Example 16

An exfoliating foot mask as in example 14, except that in the pineapple enzyme preparation process a1, the pineapple pulp was homogenized before the enzymolysis, and the process was the same as in example 14.

The homogenizing treatment of the pineapple pulp comprises the following steps: homogenizing fructus Ananadis Comosi pulp at 40 deg.C and 200r/min for 1 h.

The exfoliating foot mask obtained in example 16 was used with 1 group of subjects, who had a test period of 28 days, each time: day 7, day 14, day 21 and day 28. After each use, the subjects were subjected to a test for skin stratum corneum texture effect and a test for skin moisture content, the test results were averaged, and the percentage of decrease in the Sesc value from the Sesc value at day 0 and the percentage of increase in the skin moisture content from the skin moisture content at day 0 were calculated. The results of the calculations are included in table 10 below.

TABLE 10 results of example 16

As can be seen from table 10, in example 16, the pineapple ferment obtained by homogenizing pineapple pulp before enzymolysis of the pineapple pulp is used for preparing an exfoliating foot mask, and the Sesc values of the test subjects are significantly reduced on the 7 th, 14 th, 21 th and 28 th days compared with the 0 th day, as seen from the test of skin stratum corneum texture influence and the test of skin moisture content; the skin moisture levels increased significantly on days 7, 14, 21 and 28.

Therefore, in the preparation step A1 of the pineapple ferment, the pineapple pulp is homogenized before being subjected to enzymolysis, and the obtained pineapple ferment can improve the exfoliating capacity and the moisturizing capacity of the foot membrane after being used for exfoliating the foot membrane.

Example 17

An exfoliating foot mask as in example 16, except that the pineapple ferment was filtered in the pineapple ferment preparation process a3, is the same as in example 16.

The filtration treatment steps of the pineapple ferment are as follows: the pineapple ferment is primarily filtered through 1 layer of 300-mesh sterile filter cloth, then filtered through 5 layers of 500-mesh sterile filter cloth, and the obtained filtrate is collected.

The exfoliating foot mask obtained in example 16 was used with 1 group of subjects, who had a test period of 28 days, each time: day 7, day 14, day 21 and day 28. After each use, the subjects were subjected to a test for skin stratum corneum texture effect and a test for skin moisture content, the test results were averaged, and the percentage of decrease in the Sesc value from the Sesc value at day 0 and the percentage of increase in the skin moisture content from the skin moisture content at day 0 were calculated. The results of the calculations are included in table 11 below.

TABLE 11 test results of example 17

By adding the step of filtering treatment, suspended matters or precipitates in the pineapple enzymes can be obviously reduced, the fine feeling of the foot membrane obtained by using the pineapple enzymes can be improved, the use experience of consumers is improved, and the exfoliating capability and the moisturizing capability of the foot membrane are improved to a certain extent.

Examples 18 to 20

An exfoliating foot mask as in example 17, except that the moisturizer is composed of a combination of a cucumber fruit extract and aloe vera, is the same as in example 17. The weight of cucumber fruit extract and aloe vera are shown in table 12.

TABLE 12 weight (kg) of the extracts of Cucumis sativus and Aloe barbadensis in examples 18-20

Selecting 3 groups of subjects, respectively using the exfoliating foot membranes obtained in the examples 18-20, wherein the test period of the subjects is 28 days, and the using time of each time is as follows: day 7, day 14, day 21 and day 28. After each use, the subjects were subjected to a test for skin stratum corneum texture effect and a test for skin moisture content, the test results were averaged, and the percentage of decrease in the Sesc value from the Sesc value at day 0 and the percentage of increase in the skin moisture content from the skin moisture content at day 0 were calculated. The results of the calculations are included in table 13 below.

TABLE 13 test results of examples 18 to 20

As can be seen from table 13, the exfoliated foot membranes obtained in examples 18 to 20 showed significantly reduced Sesc values on days 7, 14, 21 and 28 compared to day 0, as seen from the skin stratum corneum texture effect test and the skin moisture content test performed on the subjects, as compared to example 17; the skin moisture levels increased significantly on days 7, 14, 21 and 28.

Therefore, when the humectant is prepared by mixing the cucumber fruit extract and the aloe barbadensis according to the weight ratio of 1 (0.8-1.2) in the total raw materials for preparing the exfoliating foot mask, the finally obtained exfoliating foot mask not only has good water replenishing and moisturizing capabilities, but also has good exfoliating capabilities. The analysis of the composition may be that the moisturizing agent formed by mixing the cucumber fruit extract and the aloe barbadensis according to the weight ratio of 1 (0.8-1.2) promotes the synergy between the pineapple ferment, the salicylic acid, the glycolic acid and the lactic acid, so that the cutin removing foot mask, the cutin removing capability and the water replenishing and moisturizing capability are better improved.

Comparative example

Comparative example 1

An exfoliating foot mask as in example 1, except that 0.03kg of salicylic acid, 0.03kg of glycolic acid, and 0.04kg of lactic acid were used instead of the pineapple ferment.

Comparative example 2

An exfoliating foot mask as in example 1, except that pineapple ferment was used in place of salicylic acid, glycolic acid, and lactic acid in equal amounts as in example 1.

Comparative example 3

An exfoliating foot mask as in example 1, except that the same amount of water as used in the total raw material for preparing the exfoliating foot mask instead of ethanol was used, was the same as in example 1.

Comparative example 4

An exfoliating foot mask, which is different from example 1 in that the weight of each raw material is different from that of the total raw material for preparing the exfoliating foot mask, is the same as example 1. The total raw materials of the exfoliating foot film and the weight thereof are shown in table 14.

TABLE 14 raw materials and their weights (kg) in COMPARATIVE EXAMPLE 4

Selecting 4 groups of testees, respectively using the exfoliating foot membranes obtained in the comparative examples 1-4, wherein the test period of the testees is 28 days, and the using time of each time is as follows: day 7, day 14, day 21 and day 28. After each use, the subjects were subjected to a test for skin stratum corneum texture effect and a test for skin moisture content, the test results were averaged, and the percentage of decrease in the Sesc value from the Sesc value at day 0 and the percentage of increase in the skin moisture content from the skin moisture content at day 0 were calculated. The results are shown in Table 15 below.

TABLE 15 test results of comparative examples 1 to 5

As can be seen from table 15, in comparative example 1, when compared with example 1, 0.03kg of salicylic acid, 0.03kg of glycolic acid, and 0.04kg of lactic acid instead of pineapple ferment, the obtained exfoliating foot membrane was subjected to a test for measuring the texture effect of the horny layer of the skin and a test for measuring the moisture content of the skin, and the Sesc values at the 7 th, 14 th, 21 th, and 28 th days were significantly reduced compared to the 0 th day; the increase in skin moisture content was significantly reduced on days 7, 14, 21 and 28. In combination with the results of the skin sensitization test of comparative example 1, it was found that the skin of the subject had developed erythema, infiltration, and pimple using the exfoliative foot mask obtained in comparative example 1.

From this, it was found that, in the total raw materials for preparing the exfoliating foot mask, 0.03kg of salicylic acid, 0.03kg of glycolic acid, and 0.04kg of lactic acid were used instead of pineapple ferment, and the obtained exfoliating foot mask has an enhanced exfoliating ability to the skin, but the moisturizing effect is not significant. Moreover, the irritation to the skin of the subject is large.

As can be seen from table 15, in comparison with example 1, in comparative example 2, the cutin-removed foot membrane obtained by using the same amount of pineapple ferment instead of salicylic acid, glycolic acid and lactic acid was significantly increased in the Sesc values on the 7 th, 14 th, 21 st and 28 th days compared to the 0 th day, as seen from the skin cuticle texture effect test and the skin moisture content test of the subject; the increase in skin moisture content was significantly reduced on days 7, 14, 21 and 28. Further, it was found by combining the test results of the skin sensitization test of comparative example 2 that the test subjects used the exfoliative foot film obtained in comparative example 2, and had no irritation to the skin. Therefore, the cutin removing foot membrane obtained by using the same amount of pineapple ferment instead of salicylic acid, glycolic acid and lactic acid in the total raw materials for preparing the cutin removing foot membrane has no irritation to skin, but has no obvious cutin removing effect and water replenishing effect.

As can be seen from comparative examples 1 and 2 and table 15, the pineapple enzymes, salicylic acid, glycolic acid and lactic acid of the present application have a synergistic effect, can promote metabolism of old waste cutin on the premise of reducing the amount of acid used, has a good effect of removing the aged cutin layer of feet and a good effect of moisturizing, and is mild and non-irritating to the skin.

As can be seen from table 15, in comparison with example 1, in comparative example 3, the cutin-removed foot membrane obtained by using the same amount of water instead of ethanol showed a significant increase in the Sesc values on the 7 th, 14 th, 21 st and 28 th days, compared to the 0 th day, when the test for measuring the texture effect of the stratum corneum and the test for measuring the moisture content in the skin were carried out on the subject; the increase in skin moisture content was significantly reduced on days 7, 14, 21 and 28. Therefore, the total raw materials of the cutin-removing foot mask can improve the effects of removing the cutin layer and moisturizing by adding ethanol, and are mild and non-irritant to the skin.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. The cutin-removing foot mask is characterized by comprising the following components in percentage by weight:

0.1-1.0% of pineapple enzyme;

0.1-1.0% of lactic acid;

0.05-0.5% of salicylic acid;

0.2-2.0% of glycolic acid;

1.0-10.0% of isopropanol;

1.0-10.0% of glycerol;

0.1-1.0% of sodium lactate;

100.1-1.0% of polyquaternium;

0.1-1.0% of hydroxyethyl cellulose;

2-6.0% of a humectant;

0.1-1.0% of propylene glycol;

0.1-1.0% of phenoxyethanol;

0.1 to 1.0% of ethylhexyl glycerin;

0.1-1.0% of ethanol;

the balance of water.

2. The exfoliating foot mask as recited in claim 1, wherein the ethanol is added in an amount of 0.5% by weight.

3. The exfoliating foot mask as claimed in claim 1, wherein the pineapple ferment is prepared by the steps of:

a3: fermenting the saccharified pineapple green juice: adjusting the temperature of the saccharified pineapple green juice to 25-30 ℃, inoculating saccharomycetes into the pineapple green juice, and sealing and fermenting for 8-10 hours at the temperature of 25-30 ℃; then adjusting the temperature of the saccharified pineapple green juice to 35-39 ℃, inoculating lactobacillus plantarum into the saccharified pineapple green juice, and carrying out sealed fermentation for 2-4 hours at the temperature of 35-39 ℃ to obtain pineapple ferment;

4. The exfoliating foot mask according to claim 3, wherein in the pineapple enzyme preparation step A3, the inoculation amount of the yeast is 0.3-0.4 g/100mL of the saccharified pineapple green juice; the inoculation amount of the lactobacillus plantarum is 2-3 g/100mL of saccharified pineapple green juice.

5. The exfoliating foot mask according to claim 3, wherein in the preparation step A3 of the pineapple ferment, the temperature of the saccharified pineapple green juice is adjusted to 25-28 ℃, the saccharified pineapple green juice is inoculated with yeast, and the fermentation is performed in a sealed manner at 25-28 ℃ for 8-9 hours; and adjusting the temperature of the saccharified pineapple green juice to 37-39 ℃, inoculating lactobacillus plantarum into the pineapple green juice, and sealing and fermenting at 37-39 ℃ for 3-4 hours to obtain the pineapple ferment.

6. The exfoliating foot mask according to claim 3, wherein in the preparation step A1 of the pineapple ferment, the pineapple pulp is further subjected to a homogenization treatment before the enzymolysis, wherein the homogenization rotation speed is 200-400 r/min, the homogenization temperature is 40-50 ℃, and the homogenization time is 1-2 h.

7. The exfoliating foot film according to claim 3, wherein the pineapple ferment obtained in the pineapple ferment preparation step A3 is further subjected to a filtration treatment.

8. The exfoliating foot mask as claimed in claim 1, wherein the moisturizer is prepared by mixing cucumber fruit extract and aloe vera, and the weight ratio of the cucumber fruit extract to the aloe vera is 1 (0.8-1.2).

9. A method of preparing an exfoliating foot mask as claimed in any of claims 1 to 8, comprising the steps of:

s2: stirring and mixing glycolic acid, lactic acid, isopropanol, glycerol, sodium lactate, polyquaternium-10, hydroxyethyl cellulose and water at 80-85 ℃ for 30-50min, and then preserving heat for 25-35 min; sequentially adding the salicylic acid-ethanol mixture, the humectant, the pineapple ferment, the propylene glycol, the phenoxyethanol and the ethylhexyl glycerin at 30-40 ℃, stirring, mixing and discharging.