CN112716814B

CN112716814B - Double-layer shaking essence and preparation method thereof

Info

Publication number: CN112716814B
Application number: CN202011597771.5A
Authority: CN
Inventors: 吴洪庆; 彭燕辉; 罗巧玲; 彭婷婷
Original assignee: Peng Shi Huizhou Industrial Development Co ltd
Current assignee: Peng Shi Huizhou Industrial Development Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2023-07-11
Anticipated expiration: 2040-12-29
Also published as: CN112716814A

Abstract

The invention belongs to the technical field of cosmetics, and discloses a double-layer shaking essence and a preparation method thereof. The double-layer shaking essence provided by the invention comprises a water phase and an oil phase, wherein the water phase comprises the following components in parts by mass: 15-20 parts of humectant, 0.1-0.5 part of thickener, 0.1-1 part of preservative, 0.05-0.2 part of pH regulator and 75-85 parts of water; the oil phase comprises the following components in parts by mass: 50-65 parts of a softening agent, 30-50 parts of grease, 0.2-0.8 part of a skin conditioning agent and 0.05-0.1 part of essence. The double-layer shaking essence provided by the invention can play a super-strong collocation role of active ingredients under a scientific proportion, and can reduce the problems of dryness, rough skin, darkness, wrinkles and the like caused by the primary and the old symptoms.

Description

Double-layer shaking essence and preparation method thereof

Technical Field

The invention relates to the technical field of cosmetics, in particular to a double-layer shaking essence and a preparation method thereof.

Background

With the acceleration of modern life pace and the increase of various pressures of society, and various influences of environmental pollution, the skin of young people at least 25-35 years old may have developed the primary and old symptoms of fine lines, dark yellow complexion, rough skin and the like. Although there are many anti-aging skin care products on the market, most of the anti-aging products are not differentiated from the people using the skin, and the skin aging of the people aged over 40 is not identical to the skin of the young people aged 25-35 because the skin conditions of the people aged at different stages are not identical.

Chinese patent CN111568823a discloses an essence for tightening skin and resisting the aging and a preparation method thereof. The essence consists of trehalose, nicotinamide, an emulsifier, a preservative, panthenol, dipropylene glycol, glycerol acrylate/acrylic acid copolymer, glycerol polyether-26, a pH regulator, a thickener, essence, a sea fennel extract, sodium hyaluronate, butanediol, olive fruit extract, palmitoyl hexapeptide-12, a hydrolyzed yeast extract, polyquaternium-51, sodium pyrrolidone carboxylate/betaine/sorbitol/glycine/alanine/proline/serine/threonic acid/arginine and water, has excellent effects of resisting oxidation, whitening, locking water and moisturizing, and tightening skin, namely has a good repairing effect on aged and damaged skin, but the essence provided by the patent has no remarkable effect on rough skin and wrinkle formation mainly caused by the skin primary symptoms.

Thus, with the increasing subdivision of the market and the increasing pursuit of skin care products by young people, there is a need in the art for developing a comprehensive anti-aging skin care product suitable for young people, which addresses the ever-increasing market demands.

Disclosure of Invention

In order to overcome the defects and shortcomings of the prior art, the primary purpose of the invention is to provide a comprehensive anti-aging double-layer shaking essence with good efficacy.

The invention further aims at providing a preparation method of the double-layer shaking essence.

In order to achieve the aim of the invention, the invention adopts the following technical scheme:

the double-layer shaking essence comprises an aqueous phase and an oil phase, wherein the aqueous phase comprises the following components in parts by mass: 15-20 parts of humectant, 0.1-0.5 part of thickener, 0.1-1 part of preservative, 0.05-0.2 part of pH regulator and 75-85 parts of water; the oil phase comprises the following components in parts by mass: 50-65 parts of soft lubricant, 30-50 parts of grease, 0.2-0.8 part of skin conditioner and 0.05-0.1 part of essence.

Preferably, the mass ratio of the aqueous phase to the oil phase is 3:1 to 4:1, more preferably 4:1.

Preferably, the aqueous phase further comprises 0.05-0.2 parts of carnosine and 1-3 parts of nicotinamide by mass.

Preferably, the humectant may comprise at least one of xylitol, sodium PCA, 1, 3-butanediol, 1, 2-hexanediol.

Preferably, the mass ratio of xylitol, sodium PCA, 1, 3-butanediol and 1, 2-hexanediol is 10:5:0.5:0.5.

Preferably, the thickener comprises at least one of cellulose gum and sodium alginate.

Preferably, the pH adjuster may include at least one of citric acid and disodium hydrogen phosphate.

Preferably, the water may be at least one of deionized water, purified water, or distilled water.

Preferably, the aqueous phase is adjusted to a pH of 5.0-6.0 by the pH adjuster.

Preferably, the preservative may include at least one of ethylhexyl glycerol and p-hydroxyacetophenone.

Preferably, the skin conditioning agent may comprise at least one of pentaerythritol tetrakis (di-t-butylhydroxyhydrocinnamate), tocopheryl acetate, ubiquinone.

Preferably, the aqueous phase may further comprise a coloring agent to make the appearance of the double-layered essence more attractive.

Preferably, the colorant may include at least one of CI 19140, CI 16035.

Preferably, the emollient may include at least one of isohexadecane, polydimethylsiloxane.

Preferably, the oil and fat can comprise at least one of sweet almond oil and squalane.

Preferably, the mass ratio of the sweet almond oil to the squalane is 1:1.

Preferably, the double-layer shaking essence comprises an aqueous phase and an oil phase, wherein the aqueous phase comprises, by mass, 0.05-0.2 part of carnosine, 1-3 parts of nicotinamide, 9-12 parts of xylitol, 4-6 parts of sodium PCA, 0.1-1 part of 1, 3-butanediol, 0.1-1 part of 1, 2-hexanediol, 0.1-0.5 part of a mixture of cellulose gum and sodium alginate, 0.1-0.5 part of ethylhexyl glycerol, 0.1-0.5 part of p-hydroxyacetophenone, 0.05-0.1 part of citric acid, 0.05-0.1 part of disodium hydrogen phosphate and 75-85 parts of water; the oil phase comprises the following components in parts by mass: 35-40 parts of isohexadecane, 15-25 parts of sweet almond oil, 15-25 parts of squalane, 15-25 parts of polydimethylsiloxane, 0.05-0.2 part of pentaerythritol tetra (di-tert-butyl hydroxy hydrocinnamate), 0.1-0.5 part of tocopheryl acetate, 0.01-0.05 part of ubiquinone and 0.05-0.1 part of essence.

The formula of the invention comprises the following components:

the anti-aging action mechanism of the carnosine adopted by the invention on the skin is mainly four in that (1) free radicals are eliminated or the anti-aging action of the free radicals is reduced by reducing the damage of mitochondrial functions, antioxidation and the like; (2) the length of telomeres is in direct proportion to the cell division times, the length of telomeres is longest at birth, and the length of telomeres gradually shortens along with the growth of age, and carnosine can activate telomerase, inhibit the shortening of telomeres, and further delay aging; (3) carnosine can protect elastin and collagen from glycosylation, so that intercellular nutrition and metabolic product exchange disorder caused by crosslinking of glycosylated protein are reduced, and finally skin elasticity reduction and wrinkle generation are reduced; (4) carnosine is able to rejuvenate senescent cells.

The nicotinamide adopted by the invention is a water-soluble, stable and easy-to-penetrate small molecular vitamin of the stratum corneum, can effectively inhibit the formation of melanin particles and the transfer of melanin to the stratum corneum cells, and can promote the cell shedding containing melanin by accelerating the update speed of skin cells after partial melanin inevitably reaches the superficial skin, so that the skin is cleaned from inside to outside, the dark complexion of the primary skin is reduced, and the skin is lightened.

The natural plant moisturizing agent xylitol, the skin natural moisturizing factor PCA sodium, the 1, 3-butandiol and the 1, 2-hexanediol are all small molecular moisturizing agents, have small molecular weight and strong permeability, are easy to enter into the horny cell gap, and can play a role in instant moisturizing.

The squalane adopted by the invention is a natural component in skin, has better functions of resisting oxidation and stimulating immunity, and can be quickly dissolved with moisture and grease in the skin. The natural skin protection barrier is formed, the stability is excellent, the skin protection barrier can not generate oxidation with air, ultraviolet rays and the like, can effectively protect the skin from being damaged by external substances, has excellent penetrability and high-efficiency oxygen carrying property, can regulate the water-oil balance of the skin, avoid the rough and dark skin, enable the skin to recover the original tender touch, is lubricating oil for the skin, and can supplement the natural oil of the skin.

The sweet almond oil adopted by the invention contains multiple vitamins, proteins, polyunsaturated fatty acids, mineral substances and glucoside, is quite soft, lubricating and non-greasy base oil, and has the effects of nourishing, moisturizing, relaxing and resisting allergy.

The skin conditioner adopts pentaerythritol tetra (di-tert-butyl hydroxy hydrocinnamate) to eliminate free radicals, has an antioxidation effect, and can prevent aging; the tocopheryl acetate has good antioxidation effect, is an oil-soluble natural substance, has good nutrition and moistening effects on skin, can promote wound healing, prevent inflammation, prevent rough skin and chapping, improve black spots, and also can avoid rancidity and oxidation of grease; ubiquinone is a strong lipophilic antioxidant, can easily penetrate skin as a small molecular substance, has effects of improving skin repairing and regenerating capability, reducing free radical injury, and preventing photoaging and wrinkle formation.

The invention also provides a preparation method of the double-layer shaking essence, which comprises the following steps:

(1) Preparation of an aqueous phase: adding the thickener into water according to a certain proportion, uniformly mixing, and homogenizing for 2-3min to obtain a water phase A; adding the preservative into part of the humectant, heating, stirring and dissolving to obtain a water phase B; adding the water phase B into the water phase A, uniformly mixing, cooling, adding the rest humectant, uniformly mixing, and regulating the pH to 5.0-6.0 by using a pH regulator to obtain the water phase;

(2) Preparation of an oil phase: mixing the softener, the grease, the skin conditioner and the essence according to a certain proportion to obtain an oil phase;

(3) Preparation of double-layer essence: adding the water phase and the oil phase into a container according to the mass ratio of 3:1-4:1.

Preferably, in the step (1), the thickener is uniformly mixed in water and then is kept at 80-85 ℃ for 10-15min.

Preferably, in the step (1), the heating is performed to 60-65 ℃, and the cooling is performed to 40-45 ℃.

Preferably, when the bilayer shaking essence further comprises carnosine and nicotinamide, the carnosine and the nicotinamide are added together with the residual humectant and uniformly mixed after being cooled.

Compared with the prior art, the invention has the following advantages and technical effects:

(1) The double-layer shaking essence provided by the invention adopts a comprehensive anti-aging formula combination and a water-oil golden ratio, and the essence water moisturizing and essence oil nourishing combination plays a role in synergistic anti-aging, is especially suitable for skin with developed sebaceous glands of young people, has quite good skin affinity and good use feeling, can create a water-oil balanced healthy muscle sole, and simultaneously plays a super-strong collocation role of active ingredients under the scientific ratio, so that the problems of dryness, rough skin, darkness, wrinkles and the like caused by the primary and aged symptoms are reduced.

(2) The double-layer shaking essence provided by the invention does not use a surfactant, and is milder and free of stimulation to skin.

(3) The double-layer shaking essence provided by the invention consists of two phases of the water phase and the oil phase, and the emulsification operation is not involved in the preparation process, so that the preparation process of the essence is simple, the process time is short, the efficiency is high, and the essence is suitable for large-scale production.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without invasive effort for a person skilled in the art.

FIG. 1 is a bar graph of changes in skin moisture content on the inside of the forearm using the sample of example 1;

FIG. 2 is a graph showing the change in brightness of facial product areas at various time points for one subject of example 1;

FIG. 3 is a graph showing the variation of facial product area fine lines at various time points for one subject of example 1;

FIG. 4 is a plot of facial product area french variation at various time points for a subject of example 1;

FIG. 5 is a graph showing the change in 3D method lines of facial product area at various points in time for three subjects of example 1;

fig. 6 is a self-evaluation result of all subjects of example 1 after using the product.

Detailed Description

The present invention will be described in further detail with reference to specific examples and drawings, but embodiments of the present invention are not limited thereto. All materials and reagents in the present invention are commercially available conventional materials and reagents unless otherwise specified. The dosage of each component in the examples is g and mL in parts by mass and volume.

Examples 1 to 5

The bilayer shaking essence of examples 1-5 comprises the components shown in Table 1 in parts by mass.

TABLE 1 EXAMPLES 1 to 4 component tables

The formulations of examples 1-5 in Table 1 were prepared as follows:

(1) Preparation of an aqueous phase: adding cellulose gum and sodium alginate into water, mixing, heating to 80-85deg.C, maintaining the temperature for 10-15min, and homogenizing for 2-3min to obtain water phase A; adding p-hydroxyacetophenone and ethylhexyl glycerol into a mixed solution of 1, 3-butanediol and 1, 2-hexanediol, heating to 60-65 ℃, and stirring for dissolution to obtain a water phase B; adding the water phase B into the water phase A, uniformly mixing, cooling to 40-45 ℃, adding xylitol, carnosine, nicotinamide, sodium PCA, CI 19140 and CI 16035, uniformly mixing, and regulating the pH to 5.0-6.0 by using citric acid and disodium hydrogen phosphate to obtain the water phase;

(2) Preparation of an oil phase: uniformly mixing polydimethylsiloxane, isohexadecane, squalane, sweet almond oil, pentaerythritol tetra (di-tert-butyl hydroxy hydrocinnamate), tocopheryl acetate, ubiquinone and essence according to a certain proportion to obtain an oil phase;

(3) Preparation of double-layer essence: the aqueous phase and the oil phase were added to the vessel in different mass ratios.

Blank control group

The blank group was not smeared with any product.

Comparative example 1

Comparative example 1 differs from example 5 in that the mass ratio of the aqueous phase to the oil phase in the sample of comparative example 1 is 5:1, and the other reagent amounts and preparation methods are the same as in example 5.

Comparative example 2

Comparative example 2 differs from example 5 in that no skin conditioning agent is present, and the other agents are used in the same amounts and preparation as in example 5.

Test of anti-Primary aging efficacy

The anti-aging efficacy test was performed using the double-layered shaking essences prepared in example 1, example 5 and comparative examples 1 to 2 as examples.

The testing method comprises the following steps: left and right face and arm random comparison, double-blind test

Subject requirements: the test subjects were screened from the penny (wheatstone) industry development limited company factory for healthy subjects meeting the following inclusion and exclusion criteria:

inclusion criteria:

(1) Healthy females aged 25-35 years old;

(2) Dark complexion, loss of luster and slightly loose skin;

(3) The skin is rough, not tight enough and has fine lines;

(4) The device can be well matched with testers, and can keep the regularity of life during the research period;

(5) The method can read and understand the knowledge, agree with all contents of the book, and sign the knowledge agreements voluntarily;

(6) No further clinical trials with any other study center were engaged during the trial;

(7) During the test, it was agreed that no cosmetics, drugs and health products having an influence on the results were used.

Exclusion criteria:

(1) Skin diseases or flaws exist at the test part, which may affect the judgment of the test result;

(2) Highly allergic constitution;

(3) Women who are pregnant, lactating, or are intended to be pregnant during the test;

(4) Patients with severe barycenter, liver and kidney function injury and severe hypoimmunity, or immunosuppressant in about one month;

(5) Those with mental illness, severe endocrine disease, and oral contraceptives;

(6) Clinical or other subjects with drug added within 30 days, or those with drugs that have an effect on the outcome of the trial in approximately 1 week of systemic use;

(7) Cosmetic products that may have an effect on the test results for oral and topical use within 2 weeks;

(8) The test person cannot be matched.

Data statistics: the data is counted by using SPSS, normal distribution inspection is carried out on the test data, and if the test data is normal distribution, a t-inspection method is adopted for statistical analysis; if the test data are in non-normal distribution, a rank sum test method is adopted for statistical analysis, two-tail test is adopted for the statistical methods, and a test level alpha=0.05.

Test items:

(1) Short term moisturization-skin moisture content test

The sample essence of example 1 and example 5 was applied to the inner side of the forearm at an amount of (2.0.+ -. 0.1) mg/CM2 for a single time, and the skin moisture content of the inner side of the forearm was measured by a skin moisture tester (CKCorneometer CM825, germany) before use for 15min, 45min, 1h and 2h, and the specific results are shown in Table 1, and FIG. 1 is a bar chart showing changes in skin moisture content on the inner side of the forearm using the sample of example 1.

Table 1 subject moisture content of the inner stratum corneum of the forearm (x±s) at various time points

The skin moisture meter corneometer cm825 was used to measure the skin stratum corneum moisture content, the higher the skin stratum corneum moisture content measurement, the higher the skin stratum corneum moisture content. As can be seen from the data in table 1, the differences between the moisture content change values of the skin horny layer on the inner side of the forearm and the moisture content change values of the skin before use in example 1 were statistically significant (P < 0.05) in example 1 at 15min, 45min, 1h and 2h, and the differences between the measured values and the initial values in both groups (example 1 and the blank) were significantly different (P < 0.05). Experimental data show that the double-layer shaking essence provided by the invention has the effect of improving the skin moisture content in a short period, and especially when sugar alcohol, PCA sodium, 1, 3-butanediol and 1, 2-hexanediol are combined in a specific proportion and dosage, the skin moisture content can be remarkably improved.

(2) Percutaneous moisture loss-skin barrier

The sample essence was shaken up after the face was cleaned, 3 drops were taken and applied to the left and right cheeks of the subject, the hands were rubbed until warm, the face was gently wrapped to aid absorption, twice a day in the morning and 4 weeks, and the skin of the cheek bone of the left and right cheeks was examined with a percutaneous moisture loss test probe (German CKTewameter TM Hex) for 2 weeks and for 4 weeks before use, and the percutaneous moisture loss rate (TEWL) was measured, with the specific results shown in Table 2.

Table 2 subject changes in TEWL values for facial test areas at different time points

The percutaneous moisture loss test probe (Germany CKTewameter TM Hex) detects the percutaneous moisture loss rate of the skin, and the lower the percutaneous moisture loss rate of the skin is, the better the skin barrier function is. As can be seen from the data in table 2, examples 1 and 2 are better able to reduce transdermal water flux as compared to comparative examples 1-2, i.e., demonstrate that double layer shaking essence can reduce transdermal water loss rate of skin and improve skin barrier function over a 28 day period of use at a specific oil-water ratio and composition.

(3) Facial imaging test

The samples of example 1, example 5 and comparative examples 1 and 2 were set as a set, after cleansing, the samples were shaken well, the hands were rubbed until warm, gently wrapped around the face, and the absorption was assisted twice a day, two times a night, for 4 weeks, while the subjects were photographed with the CANFIELD seventh generation facial imaging analyzer VISIA in the united states, before use, for 2 weeks after use, for 4 weeks after use, and analyzed for brightness (ITA value), facial striae, facial roughness, facial striae.

(1) Brightness (ITA degree value)

The visual Image analysis system was used in combination with Image-Pro skin analysis software to select the left and right cheeks of the subject for the ITA value calculation, ITA being a value related to L and b, which characterizes the brightness of the skin, the greater the ITA value, the brighter the skin, and conversely, the darker the skin, wherein the test results of example 1 and comparative example 1 are shown in table 3, and fig. 2 shows the change in brightness of the facial product area of one subject of example 1 at different time points.

Table 3 subjects facial ITA ° values at different time points

As can be seen from the data in table 3, the bilayer shaking essence of example 1 and example 5 are capable of increasing the ITA ° value of the face of the subject, i.e., having a skin dullness that improves the symptoms of the senior citizen, as compared to comparative example 1 and comparative example 2. In example 1, the ITA ° value of D28 was compared with that before use, the data were statistically significant (P < 0.05), and as can be seen from fig. 2, the skin dullness of the face of the subject was improved after 28 days of use, the skin dullness was significantly improved, and the effect of improving skin dullness by double-layer shaking essence at a specific formulation ratio was significantly improved.

Facial fine lines

The face fine lines were calculated by selecting the left and right cheeks of the subjects using the ViSIA Image analysis system in combination with Image-Pro skin comprehensive analysis software, and the specific results are shown in Table 4, and FIG. 3 shows the change of the face product area fine lines of one subject at different time points in example 1.

Table 4 subjects varied facial fine lines at different time points

As can be seen from the data in table 4, the sample refinement of example 1 and example 5 has the effect of reducing facial fine wrinkles compared with comparative examples 1 and 2, wherein example 1 is a preferred example of the present invention, the data has statistical significance (P < 0.05) compared with the facial fine wrinkles value of D28 before use, and it can be seen from fig. 2 that the subject facial fine wrinkles of example 1 are significantly reduced and the skin is smoother after 28 days of use, and it can be seen that the double shaking fine appearance of example 1 can significantly improve the symptoms of increased fine wrinkles of the primary symptoms.

(3) Roughness of face

The left and right cheeks of the subjects were selected for calculation of facial texture using the ViSIA Image analysis system in combination with Image-Pro skin comprehensive analysis software, and the specific results are shown in Table 5.

Table 5 subject facial texture changes at different time points

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As can be seen from the data in table 5, the data of the examples 1 and 5 are statistically significant (P < 0.05) compared with the facial fine line value of D28 before use, and the data of the comparative examples 1 and 2 are not statistically significant (P > 0.05) compared with the facial fine line value of D14 and D28 before use, so that the dual-layered shaking essence of example 1 can significantly improve the skin roughness of the primary and the secondary symptoms under the specific formulation conditions.

(4) Facial statue

And selecting left and right legal grain positions of the subject by utilizing a VISIA Image analysis system and combining Image-Pro skin comprehensive analysis software to calculate linear light intensity. Using the linear light intensity tool to score specific areas, the greater the data floating of the pixels, the lower the valley position, the deeper the wrinkles, the specific test results are shown in table 6, and fig. 4 shows the variation of facial product area stature lines of a subject in example 1 at different time points; fig. 5 is a graph showing the variation of 3D method lines of facial product areas at various time points for three subjects of example 1.

Table 6 subjects facial french changes at different time points

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As can be seen from the data in table 6, both examples 1 and 5 have a remarkable effect against the striae, compared to comparative examples 1 and 2, wherein both the striae of the face of the groups of examples 1 and 5 are remarkably improved (P < 0.05) compared to before the use after the continuous use of the essence of the sample, while the groups of comparative examples 1 and 2 are not remarkably different from before the use after the use. Meanwhile, as can be seen from the change patterns of facial stature of the subjects in fig. 4 and 5, the stature of the subjects was significantly shallower after the double-layered shaking essence of example 1 was used.

Summary of efficacy: as can be seen from comparison of the effects of example 1 and example 5 with those of comparative example 1 and comparative example 2, comparative examples 1-2 have a certain effect of improving skin in the absence of certain specific components or in different amounts of the specific components, but the effect is not remarkable, which indicates that the remarkable anti-aging effect of the double-layer shaking essence provided by the invention is generated by the synergistic effect of the different components in the formula, and the double-layer shaking essence provided by the invention has good instant moisturizing, skin barrier protecting, face darkening reducing, face roughness reducing, fine grain and French resisting and other comprehensive anti-aging effects under the conditions of specific component selection, specific ratio and amount range.

(4) Subject self-assessment

All subjects were subjected to a questionnaire, which is a subjective evaluation of the subjects using the product of example 1, with the following main evaluation items: the specific results of facial fine lines, skin elasticity, skin color brightness, skin fineness, skin smoothness, etc. are shown in fig. 6.

As can be seen from fig. 6, volunteers self-evaluate the results after using the 28-day double shaking essence: the fine lines of the face are reduced by 70.8%, the skin is increased by 70.8%, the skin color is improved by 70.8%, the fineness of the skin is improved by 70.8%, and the smoothness of the skin is improved by 73.9%. Meanwhile, the satisfaction degree of the subjects on the improvement of the skin by using the double-layer shaking essence is 100%.

The results of efficacy evaluation of the samples prepared in examples 2-4 were similar to those of example 1.

Poor skin condition

During use of the samples, 0 subjects developed local erythema, papules, wheal, edema, or systemic adverse skin response.

The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the scope of the present invention.

Claims

1. A preparation method of double-layer shaking essence is characterized in that,

the double-layer shaking essence consists of a water phase and an oil phase, wherein the mass ratio of the water phase to the oil phase is 3:1-4:1;

the aqueous phase comprises, by mass, 0.05-0.2 part of carnosine, 1-3 parts of nicotinamide, 9-12 parts of xylitol, 4-6 parts of sodium PCA, 0.1-1 part of 1, 3-butanediol, 0.1-1 part of 1, 2-hexanediol, 0.1-0.5 part of a mixture of cellulose gum and sodium alginate, 0.1-0.5 part of ethylhexyl glycerol, 0.1-0.5 part of p-hydroxyacetophenone, 0.05-0.1 part of citric acid, 0.05-0.1 part of disodium hydrogen phosphate and 75-85 parts of water;

the oil phase comprises, by mass, 35-40 parts of isohexadecane, 15-25 parts of sweet almond oil, 15-25 parts of squalane, 15-25 parts of polydimethylsiloxane, 0.05-0.2 part of pentaerythritol tetra (di-tert-butyl hydroxy hydrocinnamate), 0.1-0.5 part of tocopheryl acetate, 0.01-0.05 part of ubiquinone and 0.05-0.1 part of essence;

the aqueous phase further comprises a colorant comprising at least one of CI 19140, CI 16035;

the mass ratio of the xylitol to the sodium PCA to the 1, 3-butanediol to the 1, 2-hexanediol is 10:5:0.5:0.5;

the mass ratio of the sweet almond oil to the squalane is 1:1;

the xylitol, the PCA sodium, the 1, 3-butanediol and the 1, 2-hexanediol form a humectant;

the mixture of the cellulose gum and the sodium alginate is used as a thickening agent;

the citric acid and disodium hydrogen phosphate form a pH regulator;

the ethylhexyl glycerol and the p-hydroxyacetophenone form a preservative;

the isohexadecane and the polydimethylsiloxane form a softener;

the sweet almond oil and squalane form grease;

the pentaerythritol tetra (di-tert-butyl hydroxy hydrocinnamate), tocopheryl acetate and ubiquinone form a skin conditioner;

the preparation method comprises the following steps:

(1) Preparation of an aqueous phase: adding the thickener into water according to a certain proportion, uniformly mixing, and homogenizing for 2-3min to obtain a water phase A; adding the preservative into part of the humectant, heating, stirring and dissolving to obtain a water phase B; adding the water phase B into the water phase A, uniformly mixing, cooling, adding the rest humectant, uniformly mixing, and regulating the pH value to 5.0-6.0 by using a pH regulator to obtain the water phase, wherein the carnosine and the nicotinamide are added into the water phase A together with the rest humectant after cooling, and uniformly mixing;

(3) Preparation of double-layer essence: adding the water phase and the oil phase into a container according to the mass ratio of 3:1-4:1;

the thickener in the step (1) is uniformly mixed in water and then is kept at 80-85 ℃ for 10-15min; the heating is heating to 60-65 ℃, and the cooling is cooling to 40-45 ℃.