High-moisture-retention skin-softening essence bar and preparation method thereof

Abstract

The invention discloses a high-moisture-retention skin-softening essence stick which is prepared from a phase A, a phase B, a phase C and a phase D. The phase A comprises an emollient I and a thickening agent, the phase B comprises an emulsifier and an emollient II, the phase C comprises a solvent, a humectant, a stabilizer and a preservative, and the phase D comprises essence and a skin conditioner. The composition of the paraffin, the beeswax and the synthetic wax is adopted, so that the hardness of the essence rod paste can be optimized, and the essence rod paste is easy to smear, good in formability and stable. And the formed paste has the advantages of proper hardness, smooth skin feeling and small smearing resistance in a low-temperature environment, and does not melt or generate fragments in a high-temperature environment. The essence stick contains various vegetable oil and skin moistening oil, has the effects of moisturizing, softening, tightening and resisting wrinkles, is solid, convenient to carry, light and handy to go out, can moisturize at any time, can be directly smeared on the face without sticking hands, and can keep the skin moist for a long time.

Description

Technical Field

[0001] The invention relates to A61K, to the field of makeup products, and in particular to a highly moisturizing and softening essence stick and a preparation method thereof. Background Art

[0002] Most existing skin care essence products are in liquid form. When used, they are poured into the hands and then applied to the face. The essence cannot be fully absorbed by the facial skin, and even using cotton pads will cause a certain degree of loss of essence. In addition, liquid substances are limited by volume and weight such as airplane consignment, making them inconvenient to carry. In addition, traditional essence products often add thickeners to increase the consistency of the essence. In actual products, the skin care essence has less oil components, and the essence skin care effect is not significant. Especially in dry weather, the moisturizing effect is not enough. Long-term exposure to the external environment will cause dry, itchy, red and swollen skin, and a series of skin problems. Therefore, it is very important to develop an essence product that is easy to use, carry, and has strong moisturizing and skin care effects.

[0003] Chinese invention patent CN201710229524.1 discloses a mint essence anti-wrinkle skin cream, which can achieve anti-wrinkle, anti-oxidation, and free radical scavenging effects by introducing beeswax, emulsified paraffin, and adding mint and DA-tocopherol acetate, and has obvious wrinkle smoothing, anti-aging, and tender skin care effects. However, the lotion is inconvenient to use and needs to be applied by hand. Chinese invention patent CN202210762516.4 discloses a Chuanxiong essential oil skin care product and its preparation method, which combines the advantages of Chuanxiong volatile oil and skin care products, can give full play to the skin care and penetration effects of essential oils, and make Chuanxiong essence skin care products that can nourish the skin for a long time. It is easy to use, safe and effective, but the amount of essential oil added is not high and the effect is not significant. Summary of the invention

[0004] In order to develop an essence product that is easy to use and carry and has strong moisturizing and skin care effects, the first aspect of the present invention provides a highly moisturizing and softening essence stick, the preparation raw materials include phase A, phase B, phase C, and phase D. The phase A includes emollient I and a thickener, the phase B includes an emulsifier and an emollient II, the phase C includes a solvent, a moisturizer, a stabilizer, and a preservative, and the phase D includes a fragrance and a skin conditioner.

[0005] As a preferred embodiment, the preparation raw materials include phase A, phase B, phase C, and phase D. In parts by weight, the phase A includes 20-30 parts of emollient I and 10-25 parts of thickener, the phase B includes 1-4 parts of emulsifier, 1-2 parts of emollient II, the phase C includes 30-35 parts of solvent, 15-20 parts of humectant, 1-3 parts of stabilizer, 0.3-0.8 parts of preservative, and the phase D includes 0.1-0.5 parts of flavor and 0.01-0.02 parts of skin conditioner.

[0006] As a preferred embodiment, the preparation raw materials include phase A, phase B, phase C, and phase D. In parts by weight, phase A includes 27.5 parts of emollient I and 17.6 parts of thickener, phase B includes 2.4 parts of emulsifier, 1.8 parts of emollient II, phase C includes 32 parts of solvent, 17.21 parts of humectant, 1 part of stabilizer, 0.5 part of preservative, and phase D includes 0.1 part of fragrance and 0.011 part of skin conditioner.

[0007] As a preferred embodiment, the thickener comprises a wax composition and a synthetic thickener, and the wax composition is selected from at least one of paraffin, beeswax, carnauba wax, candelilla wax, wood wax, microcrystalline wax, and synthetic wax.

[0008] As a preferred embodiment, the synthetic thickener is disteardimethylammonium hectorite. Preferably, the weight ratio of the wax composition to the synthetic thickener is (15-20):0.1. More preferably, the weight ratio of the wax composition to the synthetic thickener is 17.5:0.1.

[0009] As a preferred embodiment, the wax composition includes paraffin wax, beeswax, and synthetic wax, and the weight ratio of the paraffin wax, beeswax, and synthetic wax is (7-11): (2-6): (3-6).

[0010] As a preferred embodiment, the weight ratio of the paraffin wax, beeswax and synthetic wax is 9:4:4.5.

[0011] As a preferred embodiment, the emulsifier includes emulsifier mixture I and emulsifier mixture II, and the weight ratio of emulsifier mixture I to emulsifier mixture II is (0.4-0.8):(1-3).

[0012] The inventor found in the experimental process that the hardness of the essence stick paste can be optimized by using a combination of paraffin, beeswax and synthetic wax, making it easy to apply and having good paste formability and paste stability. The possible reason is that the wax composition of paraffin, beeswax and synthetic wax can form a card room structure through physical cross-action, evenly lock the moisturizing oil components, and the flowing oil is stably stored in the card room grid of the wax composition and slowly released. In addition, the liquid oil will enter the crystalline structure of the wax system in a low temperature environment, reducing the hardening of the wax system. In a high temperature environment, the liquid oil will stably exist in the card room structure of the wax system, reducing the high temperature softening of the paste, and it is not easy to fragment when used.

[0013] The inventors further discovered that the wax composition and the emulsifier are used in a weight ratio of (14-21): (1.5-3.5), which can improve the skin feel of the essence stick. The reason may be that the polarity of the emulsifier, oil, and wax composition slows down the precipitation rate of the oil, allowing the oil to form a uniform oil film on the skin surface, which can keep the skin moisturized for a long time.

[0014] As a preferred embodiment, the weight ratio of the emulsifier mixture I to the emulsifier mixture II is 0.6:1.8.

[0015] As a preferred embodiment, the emulsifier mixture I and the emulsifier mixture II both include polyethylene glycol polysiloxane crosslinked polymers, the polymerization number of polyethylene glycol in the polyethylene glycol polysiloxane crosslinked polymer in the emulsifier mixture I is 6-9, and the polymerization number of polyethylene glycol in the polyethylene glycol polysiloxane crosslinked polymer in the emulsifier mixture II is 10-15.

[0016] As a preferred embodiment, the emulsifier mixture I includes lauryl PEG-9 polydimethylsiloxyethyl dimethicone; the emulsifier mixture II includes dimethicone and dimethicone PEG-10 / 15 cross-linked polymer.

[0017] As a preferred embodiment, the emollient I and the emollient II are both selected from at least one of mineral oil, petrolatum, vegetable oil, animal oil, fatty acid ester compounds, ethoxylated triglycerides, and polydimethylsiloxane.

[0018] As a preferred embodiment, the vegetable oil is selected from at least one of jojoba seed oil, meadowfoam seed oil, avocado oil, almond oil, olive oil, and wheat germ oil.

[0019] As a preferred embodiment, the emollient I comprises polydimethylsiloxane, dicaprylyl carbonate, and caprylic / capric triglyceride. Preferably, the weight ratio of polydimethylsiloxane, dicaprylyl carbonate, and caprylic / capric triglyceride is (6-10):(15-18):(6-10). More preferably, the weight ratio of polydimethylsiloxane, dicaprylyl carbonate, and caprylic / capric triglyceride is 6.5:15:6.

[0020] As a preferred embodiment, the emollient II comprises jojoba (SIMMONDSIACHINENSIS) seed oil, tocopherol acetate, white meadowfoam (LIMNANTHES ALBA) seed oil, and avocado (BUTYROSPERMUM PARKII) fruit fat. Preferably, the weight ratio of the jojoba seed oil, tocopherol acetate, white meadowfoam seed oil, and avocado fruit fat is (0.3-0.8): (0.1-0.5): (0.3-0.8): (0.3-0.8). More preferably, the weight ratio of the jojoba seed oil, tocopherol acetate, white meadowfoam seed oil, and avocado fruit fat is 0.5:0.3:0.5:0.5.

[0021] As a preferred embodiment, the moisturizer includes a polyol moisturizer, a sugar moisturizer, and a natural moisturizing substance; the natural moisturizing substance is selected from at least one of yeast fermentation extract, niacinamide, ceramide, panthenol, urea, and sodium lactate.

[0022] As a preferred embodiment, the moisturizing agent includes yeast fermentation extract, trehalose, propylene glycol, butylene glycol, sodium hyaluronate, and nicotinamide. Preferably, the weight ratio of the yeast fermentation extract, trehalose, propylene glycol, butylene glycol, sodium hyaluronate, and nicotinamide is (1-3): (1-3): (3-5): (8-10): (0.1-0.3): (0.1-0.2). Further preferably, the weight ratio of the yeast fermentation extract, trehalose, propylene glycol, butylene glycol, sodium hyaluronate, and nicotinamide is 1:1:5:10:0.11:0.1.

[0023] As a preferred embodiment, the solvent is water, the stabilizer is sodium chloride, the preservative is a combination of phenoxyethanol and methylparaben, and the weight ratio of phenoxyethanol to methylparaben is 0.4:0.1.

[0024] As a preferred embodiment, the skin conditioner comprises a combination of tripeptide-1 copper and a mixture of skin conditioners. Preferably, the weight ratio of the tripeptide-1 copper and the mixture of skin conditioners is (0.001-0.003):(0.01-0.03). Further preferably, the weight ratio of the tripeptide-1 copper and the mixture of skin conditioners is 0.001:0.01.

[0025] A second aspect of the present invention provides a method for preparing a highly moisturizing skin softening essence stick, comprising the following steps:

[0026] S1 Mix the raw materials of phase A at 20-30 rpm, heat to 100-110°C until the material is uniform and free of impurities, cool to 80-90°C and set aside;

[0027] S2: Add the raw material of phase B to the phase A of step S1, and homogenize at 20-40 Hz for 1-10 min until the materials are evenly mixed to obtain a mixed phase AB;

[0028] S3: Mix the C phase raw materials at 20-30 rpm, heat until the material is uniform and free of impurities, homogenize at 20-40 Hz for 1-5 minutes, and keep warm for 10-20 minutes;

[0029] During the stirring process in step S4, add the phase C in step S3 to the mixed phase AB in step S2, homogenize at 40-50 Hz for 1-5 min, and stir at this temperature for 5-10 min;

[0030] S5 material is cooled down, D phase is added, stirred evenly at 20-30rpm, discharged after passing the test, filled at high temperature, passed through freezing tunnel, and packaged.

[0031] As a preferred embodiment, the temperature of step S3 is 70-90°C, and the temperature of step S5 is 70-80°C.

[0032] As a preferred implementation, the temperature of step S3 is 80°C, and the temperature of step S5 is 75°C.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] (1) The highly moisturizing and softening essence stick of the present invention adopts a composition of paraffin, beeswax and synthetic wax, which can optimize the hardness of the essence stick paste, making it easy to apply and having good paste formability and paste stability.

[0035] (2) The highly moisturizing and softening essence stick of the present invention comprises paraffin, beeswax and synthetic wax in a weight ratio of (8-10): (3-5): (3.5-5.5). The formed paste has a suitable hardness in a low temperature environment, a smooth skin feel, and low application resistance. It does not melt in a high temperature environment and does not fragment.

[0036] (3) The highly moisturizing and softening essence stick of the present invention has a wax composition and an emulsifier in a weight ratio of (14-21): (1.5-3.5), which can improve the skin feel of the essence stick. By adding a small amount of emulsifier, the skin feel of the essence stick is not greasy in the water-in-oil dosage form.

[0037] (4) The highly moisturizing and softening essence stick of the present invention contains a variety of plant oils and emollient oils, which have moisturizing, softening, firming and anti-wrinkle effects. The solid essence stick is easy to carry and travel with, and can be moisturized at any time and can be directly applied to the face without getting your hands dirty.

[0038] (5) The highly moisturizing and softening essence stick of the present invention has a high oil content and does not feel greasy when applied to the skin. Combined with the card chamber structure of the wax composition, it can evenly lock the moisturizing oil components and form a uniform oil film when applied to the skin, which can keep the skin moisturized for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 The stability test of the highly moisturizing and softening essence stick prepared in the example under high temperature environment;

[0040] Figure 2 A bar graph showing the test results of the moisturizing rate of the highly moisturizing skin softening essence stick prepared in Example 1;

[0041] Figure 3 A bar graph showing the test results of the elastase inhibition rate of the highly moisturizing and softening essence stick prepared in Example 1;

[0042] Figure 4 This is a real picture of the highly moisturizing and softening essence stick prepared in Example 1.

[0043] Figure 5 This is a flow chart of the skin softening, firming and anti-wrinkle test in Example 1. DETAILED DESCRIPTION

[0044] Example 1

[0045] A highly moisturizing and softening essence stick is prepared from raw materials including phase A, phase B, phase C, and phase D, as shown in the following Table 1 in parts by weight.

[0046] Table 1

[0047]

[0048]

[0049]

[0050]

[0051] A method for preparing a highly moisturizing and softening essence stick comprises the following steps:

[0052] S1: Mix the raw materials of phase A at 25 rpm, heat to 100°C until the material is uniform and free of impurities, cool to 80°C and set aside;

[0053] S2: Add the raw material of phase B to the phase A of step S1, and homogenize at 30 Hz for 5 min until the materials are evenly mixed to obtain a mixed phase AB;

[0054] S3: Mix the C phase raw materials at 25 rpm, heat until the material is uniform and free of impurities, homogenize at 30 Hz for 3 minutes, and keep warm for 15 minutes;

[0055] During the stirring process in step S4, add the phase C in step S3 to the mixed phase AB in step S2, homogenize at 45 Hz for 3 minutes, and keep stirring at this temperature for 8 minutes;

[0056] S5 material is cooled down, D phase is added, stirred evenly at 25rpm, discharged after passing the test, filled at high temperature, passed through freezing tunnel, and packaged.

[0057] The temperature of step S3 is 80°C, and the temperature of step S5 is 75°C.

[0058] Performance Testing

[0059] 1. Stability test:

[0060] The use safety of the essence stick of Example 1 was tested according to the "Technical Specification for Safety of Cosmetics" (2015 edition). The results showed that the total number of colonies, total number of molds and yeasts, Pseudomonas aeruginosa, Staphylococcus aureus, thermotolerant coliform bacteria, mercury, arsenic, lead, cadmium, and dioxane were qualified.

[0061] According to QB / T 5411-2019, the detection of diethylene glycol and phenol in the essence stick of Example 1 is qualified.

[0062] The essence sticks of Examples 1-3 were placed in a (45±1)℃ environment for 24 hours, and observed to see if there were any significant differences in properties after returning to room temperature. Figure 1 , from left to right are Example 2, Example 3, and Example 1. The essence stick of Example 2 has poor stability in a high temperature environment, the stick-shaped paste is soft, and the paste is easy to break when applied. The paste melts slightly when tested at 45°C. The essence sticks of Examples 1 and 3 are stable.

[0063] The essence sticks of Examples 1-3 were placed in an environment of (-8±2)℃ for 24 hours, and observed to see if there were any significant differences in properties after returning to room temperature compared to before the experiment. In the low temperature environment, the essence stick of Example 3 was hard, felt rough, was not moisturizing, and had a large resistance to application. The essence sticks of Examples 1 and 2 were stable.

[0064] 2. Moisturizing test: In vitro weighing method, using bionic materials as sample carriers, directly applying on the carriers to simulate the use of cosmetics, placing the carriers with the sample to be tested under constant temperature and humidity (temperature: 18-27°C, relative humidity: 30-70% RH) for a certain period of time, weighing the mass of the sample before and after placement, and calculating the moisturizing rate according to the formula. The gravimetric method determines the moisturizing rate of moisturizing cosmetics. The testing principle is based on the different forces of different moisturizer molecules in cosmetics on water molecules, and the ability to absorb and retain moisture is also slightly different. Positive control: 0.5mg / mL HA; blank control: pure water.

[0065] M0 is the initial weight after applying the carrier; M t It is the mass after applying the carrier for a certain period of time.

[0066] Moisture retention rate = M t / M0×100%.

[0067] The test results are shown in Table 2 below. The test results are shown in the bar chart Figure 3 .

[0068] Table 2

[0069]

[0070]

[0071] Conclusion: The moisture retention rates of Example 1 at different times are shown in the table above. It can be seen that with the increase of time, the moisture retention rates of the sample group and the control group (blank, positive) gradually decrease. Figure 3 The moisturizing rate bar graph of the samples at different time points shows that the moisturizing rate of the test sample group at each time point (30min / 1h / 2h / 4h / 8h / 24h) is better than that of the blank control group, and P<0.05 is statistically significant. In summary, Example 1 has moisturizing effect.

[0072] 3. Skin softening, firming and anti-wrinkle test: The anti-wrinkle and firming effects are mainly characterized by evaluating the inhibition rate of test samples on elastase. Elastase is mainly synthesized and secreted by fibroblasts, which can degrade elastin in the skin and cause skin aging. The experimental principle of inhibiting elastase is that porcine pancreatic elastase catalyzes the reaction with the enzyme substrate. After adding active substances, the absorbance changes. The size of the absorbance change reflects the inhibition rate of the elastase inhibitor. Refer to GDQT-SOP-163 Elastase Inhibition Rate Test Experimental Method. See the test flow chart Figure 5 . (Temperature: 18-27℃, relative humidity: 30-70%RH) Blank group: pure water. A t : absorbance after reaction; A0: absorbance before reaction.

[0073] Elastase inhibition rate = (A t -A0) / A0×100%.

[0074] The test results are shown in Table 3 below. The test results are shown in the bar chart Figure 4 .

[0075] Table 3

[0076]

[0077] Conclusion: The anti-wrinkle and firming effects are mainly characterized by evaluating the inhibition rate of the test sample on elastase. The higher the value of the elastase inhibition rate, the stronger the anti-wrinkle and firming effects of the sample. The test results of Example 1 are shown in Table 3 / Figure 4 When the sample was the original solution, the elastase inhibition rate was 48.33%; compared with the blank group, the elastase inhibition rate of the sample group was better than that of the blank group, and the statistical difference P value was 0.000, which was significantly different (P<0.05). In summary, Example 1 has anti-wrinkle and firming effects.

Claims

1. A highly moisturizing and softening essence stick, characterized in that: The preparation raw materials include phase A, phase B, phase C and phase D. Phase A includes emollient I and thickener, phase B includes emulsifier and emollient II, phase C includes solvent, moisturizer, stabilizer and preservative, and phase D includes fragrance and skin conditioner.

2. The highly moisturizing and softening essence stick according to claim 1, characterized in that: The thickener comprises a wax composition and a synthetic thickener, wherein the wax composition is selected from at least one of paraffin wax, beeswax, carnauba wax, candelilla wax, wood wax, microcrystalline wax and synthetic wax.

3. The highly moisturizing and softening essence stick according to claim 2, characterized in that: The wax composition comprises paraffin wax, beeswax and synthetic wax, wherein the weight ratio of the paraffin wax, beeswax and synthetic wax is (7-11): (2-6): (3-6).

4. The highly moisturizing and softening essence stick according to claim 1, characterized in that: The emulsifier comprises an emulsifier mixture I and an emulsifier mixture II, and the weight ratio of the emulsifier mixture I to the emulsifier mixture II is (0.4-0.8):(1-3).

5. The highly moisturizing and softening essence stick according to claim 4, characterized in that: The emulsifier mixture I and the emulsifier mixture II both include polyethylene glycol polysiloxane cross-linked polymers, the polymerization number of polyethylene glycol in the polyethylene glycol polysiloxane cross-linked polymer in the emulsifier mixture I is 6-9, and the polymerization number of polyethylene glycol in the polyethylene glycol polysiloxane cross-linked polymer in the emulsifier mixture II is 10-15.

6. The highly moisturizing and softening essence stick according to claim 1, characterized in that: The emollient I and the emollient II are both selected from at least one of mineral oil, petrolatum, vegetable oil, animal oil, fatty acid ester compounds, ethoxylated triglyceride, and polydimethylsiloxane.

7. The highly moisturizing skin softening essence stick according to claim 6, characterized in that: The vegetable oil is selected from at least one of jojoba seed oil, meadowfoam seed oil, avocado oil, almond oil, olive oil and wheat germ oil.

8. The highly moisturizing and softening essence stick according to claim 1, characterized in that: The moisturizer includes polyol moisturizer, sugar moisturizer, and natural moisturizing substance; the natural moisturizing substance is selected from at least one of yeast fermentation extract, niacinamide, ceramide, panthenol, urea, and sodium lactate.

9. A method for preparing the highly moisturizing and softening essence stick according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: Mix and stir the raw materials of phase A, heat to 100-110°C until the material is uniform and free of impurities, cool to 80-90°C and set aside; S2: Add the raw materials of phase B to the phase A of step S1, and homogenize for 1-10 minutes until the materials are evenly mixed to obtain a mixed phase AB; S3: Mix the raw materials of phase C evenly, heat until the material is uniform and free of impurities, homogenize for 1-5 minutes, and keep warm for 10-20 minutes; During the stirring process in step S4, add the phase C in step S3 to the mixed phase AB in step S2, homogenize for 1-5 minutes, and keep warm and stir for 5-10 minutes; S5 material is cooled down, phase D is added, stirred evenly, discharged after passing the test, filled at high temperature, passed through a freezing tunnel, and packaged.

10. The method for preparing the highly moisturizing and softening essence stick according to claim 9, characterized in that: The temperature of step S3 is 70-90°C, and the temperature of step S5 is 70-80°C.

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