Powerful and mild lip-dyeing makeup-removing composition and preparation method thereof

Abstract

The invention relates to the field of A61K8 / 18, in particular to a powerful and mild lip-dyeing makeup-removing composition and a preparation method thereof.The powerful and mild lip-dyeing makeup-removing composition is prepared from, by mass, 43-55% of a surfactant, 14-30% of grease and the balance water phase, and the water phase at least comprises water, polyhydric alcohol, diethylene glycol monoethyl ether and a pH regulator. By optimizing the selection of a formula surfactant and grease and matching with the proportion control of a water phase and an oil phase, a bicontinuous phase microemulsion system with high stability is formed; furthermore, diethylene glycol monoethyl ether is introduced into the formula and is in synergistic interaction with the surfactant, so that the removal capacity of the bicontinuous-phase microemulsion system on lip dyeing products is greatly improved. Optimization design is conducted on removal of lasting cosmetics such as lip dye, active matter with specific effects can be added at will to serve as a skin conditioner, the product requirements of moistening, wrinkle resisting, whitening, relieving and repairing and the like are met, and the formula compatibility is high.

Description

Technical Field

[0001] The invention relates to the field of A61K8 / 18, and in particular to a strong and mild lip stain remover composition and a preparation method thereof. Background Art

[0002] In today's cosmetics market, long-lasting makeup products such as lip tints are favored by consumers because of their long-lasting and non-fading characteristics. Such products can meet consumers' demand for the durability of makeup, give lips a lasting color, and are not easy to remove. They are particularly suitable for consumers who need to keep their makeup for a long time. However, the durability of such products often also brings troubles in removal. It is difficult to thoroughly clean with ordinary makeup removers and is easy to remain on the lip skin. This residue not only causes problems such as clogged pores and dull skin, but also may cause irritation and damage to the lip skin. Long-term use of products that do not completely remove makeup may also cause the lip skin to become sensitive, and allergic phenomena such as redness and peeling may occur. Therefore, it is particularly important to develop a makeup remover product that can efficiently remove lip tints. A Chinese patent (authorization announcement number is CN114588079B) discloses a dual-continuous phase composition with strong cleaning effect, a preparation method and application thereof, which mainly solves the technical problem that the makeup removal cleaning power and safety and mildness cannot be balanced in the prior art by compounding amphiphilic molecules in the dual-continuous phase system. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a strong and mild lip tint make-up remover composition, which is optimized for the removal of long-lasting make-up such as lip tint, achieving efficient cleaning while ensuring the mildness of the product and the moisturizing and comfort after use. It can not only effectively remove make-up, but also protect the health of the lip skin, thereby satisfying consumers' dual pursuit of beauty and health.

[0004] On the one hand, the present invention provides a strong and mild lip stain remover composition. The raw materials for its preparation include at least 43-55% of surfactants, 14-30% of oils and fats, and the balance is made up of water phase, and the water phase includes at least the following components: water, polyol, diethylene glycol monoethyl ether, and pH regulator.

[0005] As a preferred technical solution, the raw materials for preparing the makeup removal composition also include skin conditioners, preservatives, and fragrances.

[0006] As a preferred technical solution, the raw materials for preparing the makeup remover composition include at least, by mass percentage: 43-55% surfactant, 18-30% oil, 2-12% polyol, 1-3% diethylene glycol monoethyl ether, 0.01-0.2% pH adjuster, 0.1-5% skin conditioner, 0.1-2% preservative, 0.1-1% fragrance, and water makes up the balance.

[0007] As a preferred technical solution, the HLB value of the surfactant is 10-12.5, preferably 11-12.5.

[0008] As a preferred technical solution, the surfactant is selected from at least one of sorbitan polyether-30 tetraoleate, PEG-7 glyceryl cocoate, PEG-3 glyceryl isostearate, PEG-6 caprylic / capric triglycerides, PEG-8 glyceryl isostearate, and sorbitan caprylate.

[0009] Preferably, the surfactant is a combination of sorbitan polyether-30 tetraoleate, PEG-7 glyceryl cocoate, and PEG-3 glyceryl isostearate, and the mass ratio of sorbitan polyether-30 tetraoleate, PEG-7 glyceryl cocoate, and PEG-3 glyceryl isostearate is (5-15):(10-20):(0.5-2), preferably (7-12):(13-17.8):(0.6-1.7).

[0010] As a preferred technical solution, the oil is selected from at least one of caprylic / capric triglyceride, isononyl isononanoate, coconut oil caprylate / caprate, C15-19 alkane, cetyl ethylhexanoate, glyceryl oleate, sunflower (HELIANTHUSANNUUS) seed oil, and jojoba (SIMMONDSIACHINENSIS) seed oil.

[0011] Preferably, the oil is a combination of coconut oil alcohol caprylate / caprate, isononyl isononanoate, C15-19 alkane, and ethylhexyl stearate, and the mass ratio of coconut oil alcohol caprylate / caprate, isononyl isononanoate, C15-19 alkane, and ethylhexyl stearate is (3-6):(5-8):(2-3):(10-15), preferably (3-6):(4-5.7):(2-3):(10-11).

[0012] As a preferred technical solution, the polyol is selected from at least one of butylene glycol, glycerol and dipropylene glycol.

[0013] As a preferred technical solution, the pH regulator includes citric acid and sodium citrate.

[0014] As a preferred technical solution, the skin conditioner is selected from at least one of Centella asiatica extract, citrus reticulata peel extract, ceramide, bisabolol, green tea extract, chamomile extract, carnosine, sodium hyaluronate, lactobacillus fermentation product, olive oil unsaponifiable matter, and ammonium glycyrrhizinate.

[0015] As a preferred technical solution, the preservative is selected from at least one of hydroxyphenyl esters, formaldehyde releasers, phenoxyethanol, caprylyl glycol, p-hydroxyacetophenone, and chlorphenesin.

[0016] As a preferred technical solution, the fragrance is essence or essential oil.

[0017] The lip stain remover composition provided by the present invention provides a high-stability dual-continuous phase microemulsion product by optimizing the selection of surfactants and oils in the system and controlling the proportion of water phase and oil phase, and can have good stability at a high temperature of 50°C. The oil phase and the water phase of the dual-continuous phase microemulsion system are both continuous, forming a mutually interwoven network structure, so that the provided makeup remover product has strong solubilization ability and a large interface area. The emulsifier in the system is distributed on the membrane interface of water and oil, forming a special intermediate state structure, which can not only dissolve grease well, but also quickly separate and elute, realizing dual-phase cleaning, and can effectively affinity with both water and oil, thereby improving the cleaning power and freshness, while reducing the residual degree, and will not feel greasy after use, and does not require cumbersome emulsification steps, and performs well in makeup removal.

[0018] Diethylene glycol monoethyl ether is a widely used ingredient in cosmetics. It has good permeability and can cause temporary disorder in the arrangement of skin surface cells, so it is widely used in skin care products. In makeup remover products, diethylene glycol monoethyl ether is mainly used as a solubilizer and humectant. It can help dissolve other ingredients in cosmetics, improve the cleaning power of makeup remover products, and keep the moisture of the skin at the same time, achieving the dual effects of makeup removal and moisturizing. However, there is no technical application of adding diethylene glycol monoethyl ether into a dual-continuous phase microemulsion system makeup remover product. Its technical resistance lies in the fact that the dual-continuous phase system is easily unstable at high temperature, and the addition of alcohols has a significant effect on the stability of the formula. The present invention introduces diethylene glycol monoethyl ether into the aqueous phase of the makeup remover composition, cooperates with other raw materials in the aqueous phase, promotes the joint action of sorbitol polyether-30 tetraoleate, PEG-7 glyceryl cocoate, and PEG-3 glyceryl isostearate in the system, greatly improves the removal ability of the dual-continuous phase microemulsion system for lip dye products, effectively decomposes the persistent components in the lip dye, easily and thoroughly cleans it, and ensures the cleanliness of the lip skin. However, adding diethylene glycol monoethyl ether to conventional water-based makeup remover compositions or organic makeup remover compositions has little effect on improving the removal ability of lip stain products.

[0019] The lip makeup remover composition provided by the present invention is very gentle on the lips, can gently dissolve cosmetics and thoroughly cleanse, while protecting the hydrolipid film of the lip skin to avoid irritation and damage; while cleaning, it keeps the lip skin moisturized and comfortable, avoids discomfort such as dryness and tightness of the lip skin after makeup removal, and has a good user experience.

[0020] The lip stain remover composition provided by the present invention can arbitrarily add active substances with specific functions as skin conditioners to achieve product requirements such as moisturizing, anti-wrinkle, whitening, soothing and repairing, and has high formula compatibility.

[0021] Another aspect of the present invention provides a method for preparing a strong and mild lip stain remover composition, comprising at least the following steps:

[0022] (1) Add water, polyol, diethylene glycol monoethyl ether, and pH adjuster into a water pot in sequence, heat to 80-90° C., stir and keep warm for 20-60 minutes, then cool to 20-30° C. to obtain phase A;

[0023] (2) Add surfactants and oils to an emulsifier in sequence, start stirring, and stir for 20-60 minutes to obtain phase B;

[0024] (3) Add phase A to phase B in the emulsifier while stirring, and stir for 5-15 minutes until a uniform and transparent solution is formed;

[0025] (4) Add skin conditioner, preservative and fragrance into the emulsifying pot in sequence and stir for 20-60 minutes. After the materials are tested and found to be qualified, the strong and mild lip stain remover composition is obtained.

[0026] Beneficial Effects

[0027] 1. The present invention provides a strong and mild lip stain remover composition, which is optimized for the removal of long-lasting makeup such as lip stain, achieving efficient cleaning while ensuring the mildness of the product and the moisturizing and comfort after use. It can not only effectively remove makeup, but also protect the health of the lip skin, satisfying consumers' dual pursuit of beauty and health.

[0028] 2. The lip stain remover composition provided by the present invention provides a highly stable dual-continuous phase microemulsion product by optimizing the selection of surfactants and oils in the system and controlling the ratio of the water phase and the oil phase, which can have good stability at a high temperature of 50°C.

[0029] 3. The present invention introduces diethylene glycol monoethyl ether into a dual-phase microemulsion makeup remover for the first time, and works synergistically with a surfactant to greatly improve the dual-phase microemulsion system's ability to remove lip stains, effectively decompose the persistent components in the lip stain, easily and thoroughly cleanse them, and ensure the cleanliness of the lip skin.

[0030] 4. The lip makeup remover composition provided by the present invention is very gentle on the lips, can gently dissolve cosmetics and thoroughly cleanse, while protecting the hydrolipid film of the lip skin to avoid irritation and damage; while cleaning, it keeps the lip skin moisturized and comfortable, avoids dryness, tightness and other discomforts on the lip skin after makeup removal, and has a good user experience.

[0031] 5. The lip stain remover composition provided by the present invention can arbitrarily add active substances with specific functions as skin conditioners to achieve product requirements such as moisturizing, anti-wrinkle, whitening, soothing and repairing, and the formula compatibility is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 These are the high temperature stability test results of Examples 1-5 and Comparative Examples 5-7, where ae corresponds to Examples 1-5, and fh corresponds to Comparative Examples 5-7.

[0033] Figure 2 1 is the test result of the dual-continuous phase microemulsion of Example 1, where ac in the figure respectively correspond to the appearance before adding the pigment, 0 h after adding the pigment, and 24 h after adding the pigment. In the figure, the blue color corresponds to the water-soluble pigment, and the yellow color corresponds to the oil-soluble pigment.

[0034] Figure 3 This is the lip makeup removal test process of Example 1, and ae in the figure corresponds to before application, after application, after removal, soaking the cotton pad, and the cotton pad after removal, respectively. DETAILED DESCRIPTION

[0035] Examples 1-5, Comparative Examples 1-7

[0036] On the one hand, Examples 1-5 and Comparative Examples 1-7 of the present invention provide a makeup removal composition for effectively removing lip stains. The raw materials for preparing the composition are shown in Tables 1 and 2, calculated by mass percentage.

[0037] Table 1

[0038]

[0039]

[0040] Table 2

[0041]

[0042] In Tables 1 and 2, “ / ” indicates that the addition amount of the corresponding raw material is 0.

[0043] On the other hand, Examples 1-5 and Comparative Examples 5-7 of the present invention provide a method for preparing a strong and mild lip stain remover composition, comprising the following steps:

[0044] (1) According to Tables 1 and 2, add the raw materials of phase A into a water pot in sequence, heat to 85°C, stir and keep warm for 30 minutes, then cool to 25°C to obtain phase A;

[0045] (2) Add the raw materials of phase B into the emulsifier in sequence, start stirring, and stir for 10 minutes to obtain phase B;

[0046] (3) Add phase A to phase B in the emulsifier while stirring, and stir for 10 minutes until a homogeneous transparent solution is formed;

[0047] (4) Add the raw materials of phase C into the emulsifying pot in sequence and stir for 10 minutes. After the materials are tested and qualified, they are taken out of the pot to obtain a strong and mild lip stain remover composition.

[0048] The preparation method of the strong and mild lip stain remover composition provided in Comparative Example 1 is the same as that of Examples 1-5.

[0049] The preparation methods of the makeup remover oils provided in Comparative Examples 2 and 3 are as follows: According to Table 1, the raw materials are stirred and mixed to obtain the makeup remover oils.

[0050] The preparation method of the makeup remover provided in Comparative Example 4 is as follows: according to Table 1, the raw materials are stirred and mixed to obtain the makeup remover.

[0051] Performance Testing

[0052] 1. The strong and mild lip stain remover compositions provided in Examples 1-5 and Comparative Examples 5-7 were subjected to a 50°C high temperature stability test. Specifically, the strong and mild lip stain remover compositions provided in Examples 1-5 and Comparative Examples 5-7 were placed at 50°C for 7 days, 14 days, 28 days, 56 days, and 84 days to observe whether the compositions were stratified or turbid. The results after 84 days are shown in Figure 1 , Figure 1 The results show that the products of Examples 1-5 showed no stratification or turbidity after being placed at a high temperature of 50°C for 7 days, 14 days, 28 days, 56 days, and 84 days, and the products had good high temperature stability; while the products of Comparative Examples 5-7 showed turbidity and stratification, and their stability was unqualified, so the makeup removal test was not performed.

[0053] 2. Dual-phase microemulsion test (principle: both water-soluble pigments and oil-soluble pigments can be evenly dispersed in the system). The strong and mild lip stain remover composition provided in Example 1 is placed in two beakers, and water-soluble pigments and oil-soluble pigments are dropped into them respectively. After standing for 24 hours, observe whether the pigments are evenly dispersed. If both water-soluble pigments and oil-soluble pigments can be evenly dispersed in the material body, it is a dual-phase microemulsion. The results are shown in FIG. Figure 2 .

[0054] 3. Lip makeup removal and lip comfort test

[0055] (1) 30 volunteers aged 20 to 30 were randomly selected and divided into 6 groups, with 5 volunteers in each group. The 6 groups of volunteers were used as groups to test the lip makeup remover samples of the embodiment and the comparative example, respectively. The results are shown in Figure 3 .

[0056] (2) Based on the volunteers' trial of the corresponding lip makeup remover samples, the lip makeup removal comfort was evaluated and the user experience was scored (out of 5 points, with a full score of 5 points. The scoring results of each group were based on the test values ​​within the group, and the average value was taken).

[0057] (3) Test method: Clean the lips of volunteers and let them sit for 30 minutes. Apply color-changing lip tint to the lips and let them sit for more than 2 hours to allow the pigment to completely combine with the skin and develop color. Soak the makeup removal sample on the makeup removal cotton pad, apply it to the lips for about 30 seconds, and gently wipe it. Observe the lip makeup removal effect and fill in the questionnaire to rate the makeup removal power and lip comfort.

[0058] Makeup removal rating standard: Can be completely removed by naked eye: 9-10; Can be removed, but a small amount of residue is still left upon closer inspection: 7-9 (excluding 9); Can remove some, but there is still obvious residue: 5-7 (excluding 7); Can remove a small amount, but most of the residue is still left: 4-5 (excluding 5); Almost no obvious change: <4.

[0059] Comfort rating criteria: The rating is based on four comfort rating dimensions: gentleness on the lips, skin feel, and skin condition after removal. Comfort: 7-10 points (excluding 7); General: 5-7 (including 5 and 7); Discomfort: <5.

[0060] (4) The test score results are shown in Table 3.

[0061] Table 3

[0062]

[0063] Results Analysis

[0064] Examples 1-5 can all remove the lip tint product without leaving any residue visible to the naked eye.

[0065] Comparison between Example 1 and Comparative Example 1 shows that adding diethylene glycol monoethyl ether to the bicontinuous microemulsion system provided by the present invention can enhance the makeup removal ability.

[0066] Examples 1 and 2 and Comparative Example 2, as well as Comparative Example 1 and Comparative Example 2, all show that the bicontinuous microemulsion system has a stronger ability to remove lip stain products than traditional cleansing oil (surfactant, oil system).

[0067] Example 1 and Comparative Example 4, as well as Comparative Example 1 and Comparative Example 4, all show that the bicontinuous microemulsion system has a stronger ability to remove lip stain products than the traditional makeup remover system.

[0068] Comparative Examples 2 and 3 show that the effect of adding diethylene glycol monoethyl ether to the traditional makeup remover oil system on improving the makeup removal ability is not obvious.

[0069] Example 1 and Comparative Examples 1, 2, 3 and 4 show that the bicontinuous microemulsion system and diethylene glycol monoethyl ether can together effectively remove the pigment residue of the color-changing lip stain on the lips. The system is superior to traditional makeup remover oils and water in removing lip stain, but it cannot completely remove the pigment. Adding a small amount of diethylene glycol monoethyl ether helps to completely remove the pigment residue of the color-changing lip stain on the lips.

Claims

1. A strong and mild lip stain remover composition, characterized in that: The raw materials for its preparation include at least 43-55% of surfactant, 14-30% of oil and fat, and the balance is made up of water phase, and the water phase includes at least the following components: water, polyol, diethylene glycol monoethyl ether, and pH regulator.

2. The strong and mild lip stain remover composition according to claim 1, characterized in that: The raw materials for preparing the makeup removal composition also include skin conditioners, preservatives, and fragrances.

3. The strong and mild lip stain remover composition according to claim 2, characterized in that: The raw materials for preparing the makeup removal composition include at least 43-55% surfactant, 18-30% oil, 2-12% polyol, 1-3% diethylene glycol monoethyl ether, 0.01-0.2% pH adjuster, 0.1-5% skin conditioner, 0.1-2% preservative, 0.1-1% fragrance, and the balance is made up of water.

4. The strong and mild lip stain remover composition according to claim 3, characterized in that: The HLB value of the surfactant is 10-12.5, preferably 11-12.

5.

5. The strong and mild lip stain remover composition according to claim 4, characterized in that: The oil is selected from at least one of caprylic / capric triglyceride, isononyl isononanoate, coconut oil caprylate / caprate, C15-19 alkane, cetyl ethylhexanoate, glyceryl oleate, sunflower seed oil, and jojoba seed oil.

6. The strong and mild lip stain remover composition according to claim 5, characterized in that: The polyol is selected from at least one of butylene glycol, glycerol and dipropylene glycol.

7. The strong and mild lip stain remover composition according to claim 6, characterized in that: The pH adjusters include citric acid and sodium citrate.

8. The strong and mild lip stain remover composition according to claim 7, characterized in that: The skin conditioning agent is selected from at least one of Centella asiatica extract, citrus peel extract, ceramide, bisabolol, green tea extract, chamomile extract, carnosine, sodium hyaluronate, lactobacillus fermentation product, olive oil unsaponifiable matter, and ammonium glycyrrhizinate.

9. The strong and mild lip stain remover composition according to claim 8, characterized in that: The preservative is selected from at least one of hydroxyphenyl esters, formaldehyde releasers, phenoxyethanol, caprylyl glycol, p-hydroxyacetophenone and chlorphenesin.

10. A method for preparing the strong and mild lip stain remover composition according to any one of claims 2 to 9, characterized in that: At least the following steps are included: (1) Add water, polyol, diethylene glycol monoethyl ether and pH adjuster into a water pot in sequence, heat to 80-90° C., stir and keep warm for 20-30 minutes, then cool to 20-30° C. to obtain phase A; (2) Add surfactants and oils to the emulsifier in sequence, start stirring, and stir for 8-15 minutes to obtain phase B; (3) Add phase A to phase B in the emulsifier while stirring, and stir for 5-15 minutes until a uniform and transparent solution is formed; (4) Add skin conditioner, preservative and fragrance into the emulsifying pot in sequence and stir for 5-15 minutes. After the materials are tested and found to be qualified, the strong and mild lip stain remover composition is obtained.

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