Spray type skin care lotion as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of cosmetics, and particularly relates to a spray type skin care emulsion as well as a preparation method and application thereof. The skin care emulsion is prepared from the following components in percentage by mass: 0.5 to 2 percent of meadowfoam seed oil, 0.1 to 1.5 percent of panthenol, 0.01 to 0.15 percent of herba centellae extract, 0.1 to 1 percent of dipotassium glycyrrhizinate, 2.1 to 21.5 percent of humectant, 0.1 to 1 percent of emulsifier, 0.01 to 0.15 percent of chelating agent, 0.11 to 1.6 percent of preservative and the balance of aloe barbadensis leaf water. The meadowfoam seed oil, the panthenol and other components are compounded to prepare the spray type emulsion, the components are matched with one another, so that the atomization effect of spray can be effectively improved by reducing the surface tension of the emulsion, the effect that the spray can cover the skin more widely and finely is ensured, and the active components interact with one another, so that the effect of improving the skin quality is achieved. The soothing and repairing effects of the emulsion can be synergistically enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of cosmetics, and in particular relates to a spray-type skin care lotion and a preparation method and application thereof. Background Art

[0002] Spray-type cosmetics are a new type of skin care products in recent years. Spray-type cosmetics can be sprayed onto the face by simply pressing the nozzle, achieving the effect of skin care and makeup. It is easy to use and avoids secondary pollution caused by direct contact with the skin care product. Compared with traditional skin care smear products, the advantages of sprays are that they require less dosage, spray evenly, and the liquid in the bottle will not get on your hands, which can reduce secondary pollution of the material. It is widely welcomed in cosmetics.

[0003] However, many common spray products on the market have problems such as small spray angle and large atomized droplets, which may lead to uneven spray, low coverage, and the product easily aggregates into water droplets on the skin, affecting consumers' usage experience and effects; and existing sprays generally only have simple moisturizing effects, and rarely have soothing and repairing effects; existing sprays are generally transparent water-based systems, which cannot maintain excellent atomization effects while adding oil-soluble raw materials and active ingredients. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a spray-type skin care lotion and a preparation method and application thereof, so as to achieve a good atomization effect while providing excellent soothing and repairing effects, and meet consumers' needs for multifunctional care.

[0005] To achieve the above objectives, the technical solutions adopted by the present invention include:

[0006] In a first aspect, the present invention provides a spray-type skin care lotion, comprising the following components in percentage by mass: 0.5-2% of meadowfoam seed oil, 0.1-1.5% of panthenol, 0.01-0.15% of Centella asiatica extract, 0.1-1% of dipotassium glycyrrhizate, 2.1-21.5% of moisturizer, 0.1-1% of emulsifier, 0.01-0.15% of chelating agent, 0.11-1.6% of preservative and the balance of aloe barbadensis leaf water.

[0007] As an oil-soluble ingredient, meadowfoam seed oil is rich in fatty acids, which can improve the skin barrier and help oil-soluble ingredients to be stably dispersed in the aqueous phase, reduce surface tension at the water-oil interface, and promote the stability and atomization effect of the emulsion; panthenol has good hydrophilicity, which can help water-soluble ingredients and oil-soluble ingredients to better blend and improve the skin permeability of the product. It can also help reduce the droplet size during spraying by changing the viscosity of the solution; Centella asiatica extract and dipotassium glycyrrhizinate are active ingredients that participate in skin repair. At the same time, their stability in the emulsion is related to the surface tension of the formula. By helping the ingredients in the emulsion to be more evenly distributed, they help to improve the uniformity of the spray.

[0008] Through experimental research, it was found that the present invention uses white meadowfoam seed oil, panthenol and other components to compound within a preferred dosage range to prepare a spray-type emulsion. The components cooperate with each other to effectively improve the atomization effect of the spray by reducing the surface tension of the emulsion. The spray droplets become smaller and the atomization is more uniform, thereby ensuring that the spray can cover the skin more widely and finely, avoiding the liquid droplet aggregation phenomenon commonly seen in traditional sprays.

[0009] In addition, meadowfoam seed oil has anti-inflammatory and antioxidant properties, and can complement the anti-inflammatory and soothing effects of panthenol, Centella asiatica extract and dipotassium glycyrrhizinate. The four active ingredients interact with each other to synergistically enhance the soothing and repairing effect of the emulsion. Aloe barbadensis leaf water has natural moisturizing and calming effects, which can further reduce skin irritation and inflammation during the skin repair process, enhance the effect of the soothing and repairing active ingredients, and enable the emulsion to achieve excellent soothing and repairing effects.

[0010] Preferably, the skin care lotion comprises the following components in percentage by mass: 1-2% of meadowfoam seed oil, 0.1-1% of panthenol, 0.01-0.1% of Centella asiatica extract, 0.1-0.5% of dipotassium glycyrrhizate, 3.1-11% of moisturizer, 0.1-0.5% of emulsifier, 0.01-0.1% of chelating agent, 0.11-1.05% of preservative and the balance of aloe barbadensis leaf water.

[0011] Preferably, the skin care lotion comprises the following components in percentage by mass: 1.5% of meadowfoam seed oil, 0.5% of panthenol, 0.1% of Centella asiatica extract, 0.5% of dipotassium glycyrrhizate, 7.5% of moisturizer, 0.25% of emulsifier, 0.05% of chelating agent, 0.65% of preservative and the balance of aloe barbadensis leaf water.

[0012] Through experimental research, it was found that when the components of the present invention are combined using the optimal dosage ratio specified above, the spray effect of the spray-type skin care lotion is optimal, and the system particle size is ≤200nm, which significantly improves the penetration efficiency of the lotion on the skin, and the lotion has multiple functions of excellent moisturizing, instant soothing, and long-lasting repair.

[0013] Preferably, the moisturizing agent comprises 1,3-butylene glycol, 1,3-propylene glycol and glycerol, and the mass ratio of the 1,3-butylene glycol, 1,3-propylene glycol and glycerol is (1-10): (0.1-1.5): (1-10).

[0014] Preferably, the mass ratio of 1,3-butanediol, 1,3-propylene glycol and glycerol is (1-5): (0.1-1): (2-5).

[0015] More preferably, the mass ratio of 1,3-butanediol, 1,3-propylene glycol and glycerol is 3:0.5:4.

[0016] Preferably, the preservative comprises caprylhydroxamic acid and 1,2-hexanediol, and the mass ratio of caprylhydroxamic acid to 1,2-hexanediol is (0.01-0.1):(0.1-1.5).

[0017] Preferably, the mass ratio of octanoylhydroxamic acid to 1,2-hexanediol is (0.01-0.05):(0.1-1).

[0018] More preferably, the mass ratio of octanoylhydroxamic acid to 1,2-hexanediol is 0.05:0.6.

[0019] Preferably, the emulsifier comprises polyglyceryl-10 oleate; and / or, the chelating agent comprises disodium EDTA.

[0020] In a second aspect, the present invention provides a method for preparing the skin care lotion, comprising the following steps:

[0021] S1. Mix 1,3-butylene glycol, 1,3-propylene glycol, a chelating agent and aloe vera leaf water, heat to 85-90° C., and stir for 10-15 minutes to obtain a mixture A;

[0022] S2, adding panthenol to aloe vera leaf water, heating to 45-55° C., and stirring for 5-10 minutes to obtain a mixture B;

[0023] S3, adding the emulsifier to the glycerin, heating to 70-80° C., stirring and mixing for 10-15 minutes until the mixture is dissolved, then adding the meadowfoam seed oil, stirring and mixing evenly to obtain a mixture C;

[0024] S4, adding the Centella asiatica extract and dipotassium glycyrrhizinate into the aloe vera leaf water, stirring and mixing for 10-15 minutes to obtain a mixture D;

[0025] S5. When the mixture A is cooled to 55-60° C., a preservative is added, and the mixture is stirred and mixed for 10-15 minutes. The mixture is cooled to 45-50° C., and then the mixtures B, C, and D are added, and the mixtures are stirred and mixed for 15-20 minutes until the mixture is uniform, thereby obtaining the skin care lotion.

[0026] In a third aspect, the present invention provides application of the skin care emulsion in cosmetics.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The present invention uses white meadowfoam seed oil, panthenol and other components in a preferred dosage range to prepare a spray-type emulsion. The components cooperate with each other to effectively improve the atomization effect of the spray by reducing the surface tension of the emulsion, and the spray droplets become smaller and the atomization is more uniform, thereby ensuring that the spray can cover the skin more widely and finely, improving the moisturizing effect and absorption speed of the emulsion while avoiding the common droplet aggregation phenomenon in traditional sprays;

[0029] (2) The anti-inflammatory and soothing effects of the white meadowfoam seed oil, panthenol, Centella asiatica extract and dipotassium glycyrrhizinate of the present invention complement each other, and the four active ingredients interact with each other, thereby synergistically enhancing the soothing and repairing effect of the lotion. In addition, the aloe barbadensis leaf water has a natural moisturizing and sedative effect, thereby further reducing skin irritation and inflammation during the skin repair process, enhancing the effect of the soothing and repairing active ingredients, and making the lotion have multiple effects of excellent moisturizing, instant soothing, and long-term repairing.

[0030] (3) The final particle size of the skin care lotion of the present invention is ≤200 nm, which significantly improves the penetration efficiency of the lotion on the skin. In addition, the present invention adopts a binary spray packaging, and the propellant will not be taken out when the lotion is sprayed, thereby reducing the pollution of the propellant and the irritation to the skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is the appearance of the skin care lotion prepared in Example 1;

[0032] Figure 2 This is the particle size intensity distribution diagram of the skin care lotion prepared in Example 1. DETAILED DESCRIPTION

[0033] To better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments. It should be understood by those skilled in the art that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] Unless otherwise specified, all raw materials involved in the following examples and comparative examples are commercially available general materials.

[0035] Examples 1-5

[0036] Embodiments 1-5 of the present invention provide a spray-type skin care lotion, and the specific formula is shown in Table 1. The preparation method of the skin care lotion comprises the following steps:

[0037] S1. Mix 1,3-butylene glycol, 1,3-propylene glycol, a chelating agent and aloe vera leaf water, heat to 85-90° C., and stir for 10-15 minutes to obtain a mixture A;

[0038] S2, adding panthenol to aloe vera leaf water, heating to 45-55° C., and stirring for 5-10 minutes to obtain a mixture B;

[0039] S3, adding the emulsifier to the glycerin, heating to 70-80° C., stirring and mixing for 10-15 minutes until the mixture is dissolved, then adding the meadowfoam seed oil, stirring and mixing evenly to obtain a mixture C;

[0040] S4, adding the Centella asiatica extract and dipotassium glycyrrhizinate into the aloe vera leaf water, stirring and mixing for 10-15 minutes to obtain a mixture D;

[0041] S5. When the mixture A is cooled to 55-60° C., a preservative is added, and the mixture is stirred and mixed for 10-15 minutes. The mixture is cooled to 45-50° C., and then the mixtures B, C, and D are added, and the mixtures are stirred and mixed for 15-20 minutes until the mixture is uniform, thereby obtaining the skin care lotion.

[0042] Table 1 Formulation of the skin care lotion described in Examples 1-5 (mass percentage)

[0043]

[0044] Comparative Examples 1-6

[0045] The present invention also provides the formulas of the spray-type skin care lotions of Comparative Examples 1-6, as shown in Table 2. The preparation methods of the skin care lotions provided in Comparative Examples 1-6 are similar to those of Examples 1-5, except that the formulas are different.

[0046] Table 2 Formula of the skin care lotion described in Comparative Examples 1-6 (mass percentage)

[0047]

[0048]

[0049] Comparative Example 7

[0050] This comparative example provides a skin care lotion, which is different from Example 1 only in that the meadowfoam seed oil is replaced with grape seed oil, and the other components and contents are the same.

[0051] Comparative Example 8

[0052] This comparative example provides a skin care lotion, which differs from Example 1 only in that the Centella asiatica extract and dipotassium glycyrrhizinate are replaced by peony root extract and niacinamide, respectively, and the other components and contents are the same.

[0053] Comparative Example 9

[0054] This comparative example provides a skin care lotion, which differs from Example 1 only in that the aloe vera leaf water is replaced with deionized water, and the other components and contents are the same.

[0055] Effect example

[0056] 1. Safety test:

[0057] The skin care lotions prepared in Examples 1-5 and Comparative Examples 1-9 were used as samples to test their safety, and the specific method is as follows.

[0058] Test number: 30 people, 7 males, 23 females, aged 20-55 years old. And the volunteers meet the selection criteria for subjects in human skin patch tests in the "Technical Specifications for Safety of Cosmetics" (2015 edition).

[0059] Test method: The skin care lotions prepared in Examples 1-5 and Comparative Examples 1-9 were subjected to patch tests. Qualified patch test equipment was selected and a closed patch test method was used. About 0.020-0.025 ml of the test substance was placed in the patch tester. Medical tape was applied to the curved side of the subject's forearm. The palm of the hand was used to gently press the test substance to evenly apply it to the skin. The test substance patch tester was removed after 24 hours, and the skin reaction was observed at 0.5, 24, and 48 hours after the removal of the test substance patch tester. The results were recorded according to the skin reaction grading standards in the "Technical Specification for Safety of Cosmetics" (2015 edition).

[0060] The results of the human skin patch test showed that there were no positive reactions in 30 people. According to the Technical Specifications for Safety of Cosmetics (2015 edition), the test substance will not cause adverse skin reactions and the sample is safe and non-irritating.

[0061] 2. Particle size test:

[0062] The skin care lotions prepared in Examples 1-5 and Comparative Examples 1-9 were placed in the same spray bottle as samples, and the atomization effects thereof were tested. The specific method is as follows:

[0063] The skin care lotions described in Examples 1-5 and Comparative Examples 1-9 were tested for the particle size and distribution of mist particles using a laser diffraction particle size analyzer. Three bottles of each sample were tested. The instrument was turned on according to the operating procedures, and the appropriate lens was selected according to the sample conditions, and the measurement parameters of the instrument were set. The background was measured after 15 minutes. The sample was positioned so that the center line of the spray mist number was in the same plane as the laser beam and kept vertical. The sample was sprayed at different distances from the laser beam to check the light shielding rate of the sample. When the light shielding rate value reached the range of 0.1-0.5, the sample was positioned. Each spray was sampled for 5 seconds and the results were measured. The second and third bottles of samples were tested in turn according to the above method, and the average value of the three bottles of test results was the mist particle VMD (volume average particle diameter) of the sample. The test results of the mist particle VMD are shown in Table 3.

[0064] Table 3

[0065] Sample source VDM(μm) Sample source VDM(μm) Example 1 28.29 Comparative Example 3 49.38 Example 2 38.17 Comparative Example 4 58.81 Example 3 35.45 Comparative Example 5 46.05 Example 4 34.68 Comparative Example 6 40.34 Example 5 32.12 Comparative Example 7 51.93 Comparative Example 1 55.84 Comparative Example 8 45.55 Comparative Example 2 50.27 Comparative Example 9 39.89

[0066] As shown in Table 3, the VDM of the skin care lotions prepared in Examples 1-5 of the present invention is less than 40 μm, and the atomization effect is better. In particular, the VDM of the skin care lotion prepared in Example 1 reaches 28.29 μm, the spray angle is large, the dispersion effect is more obvious, and the atomized particles are uniform and fine, thereby effectively ensuring that the spray can cover the skin more widely and finely, and avoiding the phenomenon of liquid drop aggregation. When any one or two of the four active components of white meadowfoam seed oil, panthenol, Centella asiatica extract and dipotassium glycyrrhizinate are lacking in Comparative Examples 1-4, the atomization effect of the prepared skin care lotion is significantly reduced compared with the embodiment, especially when the white meadowfoam seed oil is lacking, the atomization effect decreases most significantly. When the above four components are replaced with components with the same efficacy in Comparative Examples 7-8, the VDM value of the prepared skin care lotion is also increased. The above results show that the four active ingredients selected by the present invention will cooperate with each other, and can effectively improve the atomization effect of the emulsion spray by reducing the surface tension of the emulsion, so that the atomization is more uniform, and the four components are indispensable.

[0067] 3. Soothing effect test:

[0068] 140 subjects aged 20-55 were selected. The subjects had no serious systemic diseases, no immunodeficiency or autoimmune diseases, and no history of allergies to skin care cosmetics. The subjects were divided into 14 groups, 10 people in each group, and the spray-type skin care emulsions described in Examples 1-5 and Comparative Examples 1-9 of the present invention were tried respectively. The specific method is as follows:

[0069] The subjects sat quietly for 30 minutes in a constant temperature and humidity environment, where the temperature was 21±1℃ and the humidity was 40-60%. Mark the inner side of the subject's arm about 4 cm 2Area, absorb 20 μL of 2% histamine solution on the marked area, apply it evenly and observe, and those with obvious redness and swelling within 20 minutes are qualified subjects. Each group of 10 subjects applied histamine solution on their arms respectively. When itching and slight redness and swelling occurred, the spray skin care lotion sample was sprayed on the redness and swelling through the same spray bottle for testing, and gently massaged by hand until completely absorbed. The changes in the skin were observed at 10min, 60min and 90min, and the subjects were asked to score the soothing effect of the sample after 90min, and the test scores of each group were averaged; among them, 9-10 points: very good soothing effect for itching and tingling, 7-8 points: good soothing effect for itching and tingling, 5-6 points: general soothing effect for itching and tingling, 3-4 points: poor soothing effect for itching and tingling, 1-2 points: very poor soothing effect for itching and tingling. The specific test results are shown in Table 4.

[0070] Table 4

[0071]

[0072] As shown in Table 4, the skin care lotion prepared by Examples 1-5 has excellent soothing effect, can effectively reduce the itching and tingling caused by stimulation of the skin, and repair and maintain the barrier function of the skin, and improve the moisturizing performance of the skin. When any one or two of the four active components of white pondweed seed oil, panthenol, Centella asiatica extract and dipotassium glycyrrhizinate are lacking in Comparative Examples 1-4, the soothing effect of the skin care lotion is significantly reduced, and when the dosage ratio of the four active ingredients described in Comparative Examples 5-6 exceeds the limited range of the present invention, the soothing effect of the obtained skin care lotion is also weakened compared with the embodiment, indicating that the four components described in the present invention can better play a synergistic effect within a specific dosage range, thereby maximizing the long-term soothing effect of the lotion; in Comparative Example 9, Aloe vera leaf water is replaced with ordinary deionized water, and the soothing effect of the skin care lotion is also reduced, indicating that the present invention uses Aloe vera leaf water as an emulsion matrix to further alleviate the irritation of the skin and enhance the effect of soothing active ingredients.

[0073] 4. Stability test:

[0074] The skin care lotions prepared in Examples 1-5 were used as samples to test their stability, and the specific method is as follows.

[0075] The internal control standard (high temperature 45±2℃ test for 3 months, low temperature -15±2℃ test for 3 months) is higher than the national standard and light industry standard; high and low temperature cycle test 5 times: 24 hours at high temperature 45±2℃ and low temperature -10±2℃ for one cycle. The results are shown in Table 5.

[0076] Table 5

[0077]

[0078] The results in Table 5 show that the skin care lotion prepared in the embodiment of the present invention does not show stratification or discoloration under high temperature, low temperature and high and low temperature cycle conditions, and has strong physical and chemical stability. Figure 2 This is a particle size intensity distribution diagram of the skin care lotion prepared in Example 1 after being tested by a Malvern particle size analyzer. It can be seen from the figure that the particle size of the skin care lotion prepared by the present invention is ≤200nm, which can effectively improve the penetration effect of the lotion on the skin.

[0079] Finally, it should be noted that the above embodiments are intended to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A spray-type skin care lotion, characterized in that: The skin care lotion comprises the following components in percentage by mass: 0.5-2% of meadowfoam seed oil, 0.1-1.5% of panthenol, 0.01-0.15% of Centella asiatica extract, 0.1-1% of dipotassium glycyrrhizinate, 2.1-21.5% of moisturizer, 0.1-1% of emulsifier, 0.01-0.15% of chelating agent, 0.11-1.6% of preservative and the balance of aloe vera leaf water.

2. The skin care lotion according to claim 1, characterized in that The skin care lotion comprises the following components in percentage by mass: 1-2% of meadowfoam seed oil, 0.1-1% of panthenol, 0.01-0.1% of Centella asiatica extract, 0.1-0.5% of dipotassium glycyrrhizinate, 3.1-11% of moisturizer, 0.1-0.5% of emulsifier, 0.01-0.1% of chelating agent, 0.11-1.05% of preservative and the balance of aloe vera leaf water.

3. The skin care lotion according to claim 2, characterized in that The skin care lotion comprises the following components in percentage by mass: 1.5% of meadowfoam seed oil, 0.5% of panthenol, 0.1% of Centella asiatica extract, 0.5% of dipotassium glycyrrhizinate, 7.5% of moisturizer, 0.25% of emulsifier, 0.05% of chelating agent, 0.65% of preservative and the balance of aloe vera leaf water.

4. The skin care lotion according to any one of claims 1 to 3, characterized in that The moisturizing agent comprises 1,3-butylene glycol, 1,3-propylene glycol and glycerol, and the mass ratio of the 1,3-butylene glycol, 1,3-propylene glycol and glycerol is (1-10): (0.1-1.5): (1-10).

5. The skin care lotion according to claim 4, characterized in that The mass ratio of the 1,3-butanediol, 1,3-propylene glycol and glycerol is (1-5): (0.1-1): (2-5).

6. The skin care lotion according to any one of claims 1 to 3, characterized in that: The preservative comprises octanoyl hydroxamic acid and 1,2-hexanediol, and the mass ratio of octanoyl hydroxamic acid to 1,2-hexanediol is (0.01-0.1):(0.1-1.5).

7. The skin care lotion according to any one of claims 1 to 3, characterized in that The emulsifier comprises polyglyceryl-10 oleate; and / or, the chelating agent comprises disodium EDTA.

8. The method for preparing the skin care emulsion according to claim 4, characterized in that: The following steps are involved: S1. Mix 1,3-butylene glycol, 1,3-propylene glycol, a chelating agent and aloe vera leaf water, heat to 85-90° C., and stir for 10-15 minutes to obtain a mixture A; S2, adding panthenol to aloe vera leaf water, heating to 45-55° C., and stirring for 5-10 minutes to obtain a mixture B; S3, adding the emulsifier to the glycerin, heating to 70-80° C., stirring and mixing for 10-15 minutes until the mixture is dissolved, then adding the meadowfoam seed oil, stirring and mixing evenly to obtain a mixture C; S4, adding the Centella asiatica extract and dipotassium glycyrrhizinate into the aloe vera leaf water, stirring and mixing for 10-15 minutes to obtain a mixture D; S5. When the mixture A is cooled to 55-60° C., a preservative is added, and the mixture is stirred and mixed for 10-15 minutes. The mixture is cooled to 45-50° C., and then the mixtures B, C, and D are added, and the mixtures are stirred and mixed for 15-20 minutes until the mixture is uniform, thereby obtaining the skin care lotion.

9. Use of the skin care emulsion according to any one of claims 1 to 7 in cosmetics.

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