Two-phase essence as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of cosmetics, and discloses double-phase essence as well as a preparation method and application thereof. The essence is prepared from the following raw materials in parts by weight: 2 to 8 parts of A-phase polyol, 0.03 to 0.08 part of a thickening agent, 0.01 to 0.1 part of sodium hyaluronate and 51 to 68 parts of water, the weight of the phase B is 0.88 to 0.92, and the weight of the phase B is 0.88 to 0.92; the volume ratio of the phase A to the phase B is (60: 30)-(70: 40). The prepared essence can be prepared into massage oil products, keeps the advantages of massage oil while balancing the skin feeling, and can be widely applied to the field of skin care.

Description

Technical Field

[0001] The invention relates to a dual-phase essence liquid and a preparation method thereof. Background Art

[0002] Massage oil is a skin care product that is applied to the skin surface during massage to moisturize the skin and reduce skin friction.

[0003] Currently, most massage oils on the market are in oily form. Although they are beneficial for massage, the unavoidable greasy feeling on the skin discourages many consumers, especially when used in baby products. In autumn and winter, in order to promote skin absorption, it is necessary to massage the baby's exposed skin for a long time, which can easily cause the baby to get sick due to cold. However, if the massage is not sufficient, it can easily stain the clothes. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the problem that massage oil products in the prior art are too greasy, increase the refreshing feeling of massage oil products, and provide a two-phase essence liquid. The two-phase essence liquid is prepared by using water and oil two phases. The preparation method is simple and may not contain any surfactant or emulsifier. The two-phase essence liquid can be formulated into a massage oil product, which retains the advantages of massage oil while balancing the skin feel. When shaken for use, the stratification time of the essence liquid is reasonable, which meets the user's needs for full absorption during massage. At the same time, it reduces the need for secondary shaking during use, which is convenient for users.

[0005] The present invention provides a dual-phase essence liquid, the formula of which comprises the following components: Phase A polyol 2-8 parts, Thickener 0.03~0.08 parts, Sodium hyaluronate 0.01~0.1 parts, Water 51~ 68 parts; Phase B moisturizing oil 28-39 parts, Among them, the B phase gravity is 0.88~0.92; the volume ratio of phase A to phase B is 60:30~70:40.

[0006] In phase A, the polyol is selected from any one of glycerol, 1,3-butylene glycol, 1,3-propylene glycol, 1,2-propylene glycol, 1,2-pentanediol, 1,2-hexanediol, dipropylene glycol, and PEG-8, or a combination of any two or more thereof. Preferably, the polyol is selected from 1,3-propylene glycol and glycerol, the content of the 1,3-propylene glycol is 2 to 5 parts, and the content of the glycerol is 0.1 to 3 parts.

[0007] The sodium hyaluronate is a high molecular weight sodium hyaluronate. Preferably, the molecular weight of the sodium hyaluronate is 1.0×10 6 ~ 1.8×10 6If the molecular weight of sodium hyaluronate is too low, the separation time of phase AB after mixing will be too short, and the too fast separation speed will make it difficult for users to take in both the water phase and the oil phase essence at the same time.

[0008] The thickener is selected from one or more of gellan gum, carrageenan, and xanthan gum, preferably xanthan gum. The content of the thickener is 0.03-0.08 parts. If the content of the thickener is too little, the stratification time of phase AB is too short. If the content is too much, the falling speed of phase A is too slow and the stratification time is too long.

[0009] Preferably, phase A may also contain a conventional preservative in the art, and the preservative may be selected from p-hydroxyacetophenone, with an amount of 0.1 to 1 part, preferably 0.5 part.

[0010] Preferably, phase A may also contain a conventional pH regulator in the art, preferably sodium citrate. The content of the pH regulator may be a conventional content in the art, preferably 0 to 0.1 parts, and more preferably 0.08 parts.

[0011] Preferably, phase A may also contain conventional soothing ingredients in the art, preferably lactic acid bacteria fermentation products, yeast fermentation broth, and the content of the soothing ingredients may be the conventional content in the art, preferably 0.01 to 1.0 parts, more preferably 0.5 parts.

[0012] Preferably, phase A may also contain conventional film-forming agents in the art, preferably styrene / acrylic acid (ester) copolymers, and the content of the film-forming agent may be the conventional content in the art, preferably 0.01 to 0.1 parts, more preferably 0.02 parts.

[0013] In phase B, the emollient oil is selected from triglycerides, partial esters, dialkyl ethers, dialkyl carbonates, hydrocarbons, paraffins, microcrystalline waxes, mineral oils, fatty alcohols and vegetable oils. Preferably, the emollient oil can be selected from at least two, specifically, three or four, of the vegetable oils. Preferably, in order to adjust the specific gravity of phase B, the specific gravity of a single moisturizing oil can range from 0.75 to 0.95. After adjustment, the specific gravity of phase B needs to be adjusted to a range of 0.88 to 0.92. The specific gravity is obtained by testing with a specific gravity bottle method. If the specific gravity of phase B is too large or too small, it will affect the separation time of phase AB. Preferably, phase B is selected from one or more of squalane, sunflower oil, camellia oil, comfrey camellia seed oil, white meadowfoam seed oil, macadamia seed oil, evening primrose oil, walnut oil, and jojoba oil. More preferably, phase B is selected from squalane, sunflower oil, and camellia oil. The weight proportions are preferably 3 to 6 parts of squalane, 24 to 29 parts of sunflower oil, and 1 to 4 parts of camellia oil.

[0014] Preferably, phase B may also contain a conventional oil-soluble antioxidant in the art, preferably tocopherol. The content of the antioxidant may be the conventional content in the art, preferably 0-0.15 parts, more preferably 0.1 parts.

[0015] In order to adjust the skin feel and stratification time of the system, the volume ratio of phase A to phase B is in the range of (60-70): (30-40).

[0016] If the content of phase A is too high, it will affect the moisturizing effect of the essence, the residual feeling, the sticky feeling, etc. If the content of phase A is too low, it will affect the absorption of the essence and the speed of the two-phase stratification, the absorption speed and the oily feeling.

[0017] When using the dual-phase essence, the essence needs to be shaken until the two phases are mixed, and then the essence is squeezed into the palm of the hand and applied to the application area.

[0018] Another aspect of the present invention provides a method for preparing a dual-phase essence, comprising the following steps: 1. After mixing the raw materials of phase A, heat them to maintain at 38-42°C and mix them evenly; filter the material and set aside for later use; 2. Mix the raw materials of phase B evenly; filter the material and set aside for later use; 3. Mix phase A and phase B evenly to obtain the essence.

[0019] After stratification, the clarity of the water-oil interface can reach above 4, and the essence can have a good visual experience and absorption effect.

[0020] The positive and progressive effects of the present invention are: Provided is a two-phase essence liquid. The preparation method of the two-phase essence liquid is simple and may not contain any surfactant or emulsifier. The two-phase essence liquid can be prepared into a massage oil product, which balances the skin feel while retaining the advantages of massage oil.

[0021] The dual-phase essence emulsion of the present invention has a stratification time of 3 to 8 minutes, which meets the use requirements and can provide excellent skin feel.

[0022] The dual-phase essence emulsion of the present invention may not contain any surfactant and emulsifier to avoid causing other irritation to the skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 : After layering of Example 1 Figure 2 :Example 1 before stratification Figure 3 :Comparative Example 4 Photo after 20 minutes of layering Figure 4 :Comparative Example 4 Photo after 1h of layering Implementation

[0024] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples. The experimental methods in the following examples without specifying specific conditions are carried out according to conventional methods and conditions, or selected according to the product specifications.

[0025] In the following examples and comparative examples, Yeast fermentation product filtrate and lactobacillus fermentation product were purchased from Shanghai Jiakai Biotechnology Co., Ltd.; Tocopherol (vitamin E) was purchased from DSM Nutritional Products; HA (sodium hyaluronate) was purchased from Bloomage Biotechnology Co., Ltd.; Styrene / acrylic acid (ester) copolymers were purchased from Wanhua Chemical Group Co., Ltd.; Xanthan gum was purchased from CP Kelco US, Inc; Squalane (specific gravity: 0.807-0.811), purchased from NIPPON SURFACTANT INDUSTRIES CO., LTD; Sunflower oil (specific gravity: 0.918-0.923) was purchased from Shanghai Kerry Grain and Oil Industry Co., Ltd.; Camellia seed oil: (specific gravity: 0.90~0.95) purchased from BioSpectrum, Inc.; Example

[0026] Add the raw materials of phase A into reactor 1, heat and maintain at 40°C, and mix well.

[0027] 2. Filter the raw materials of phase A through 400 mesh and set aside.

[0028] 3. Add the raw materials of phase B into reactor 2 and mix evenly.

[0029] 4. Filter the raw material of phase B through 400 mesh and set aside.

[0030] 5. Take a small amount of phase A and phase B (the volume ratio of phase A to phase B is based on the volume ratio in Table 1, the phase A weight ratio is 1.01 (middle value), the phase B weight ratio is 0.90 (middle value), that is, the weight ratio is 67.5:32.5), mix evenly and measure the pH value. After passing the test, fill, package and produce the finished product in the same proportion.

[0031] Table 1 Formulas of Examples 1-3 and Comparative Examples 1-6

[0032] Example 4 Delamination time & appearance test Take 100 ml of sample, shake it 20 times and let it stand until the system becomes turbid, then measure the separation time until two phases are clearly visible.

[0033] Through visual observation, the clarity after layering was evaluated based on experience. The test results are shown in Table 5 points: Completely clear and with a clear interface 4 points: Completely clear but the interface is fuzzy 3 points: A little turbidity, but the interface is clear 2 points: A little turbidity and unclear interface 1. Blurred interface Table 2 Delamination time and appearance

[0034] Example 7 Skin feel test Based on the sensory scores, 30 female volunteers aged 20 to 40 were selected. After shaking the product well, they were applied on the cleaned forearms and massaged until absorbed.

[0035] Moisturizing degree: 5 points: obviously moisturizing, 3-4 points: slightly moisturizing, 1-2 points: almost no moisturizing; Absorption rate: 4-5 points: too fast absorption, 2-3 points: moderate absorption, 1 point: too slow absorption; Soft Feel: 4-5 points: obviously soft, 2-3 points: slightly soft, 1 point: almost not soft; Residual feeling: 4-5 points: obvious residue, 2-3 points: slight residue, 1 point: almost no residue; Sticky feeling: 4-5 points: obviously sticky, 2-3 points: slightly sticky, 1 point: almost no stickiness; Table 3 Skin feel rating Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Moisture 3 5 4 4 1 3 3 2 3 Absorption rate 3 2 3 1 4 1 3 3 4 Softness 3 4 4 4 1 4 3 1 1 Residual feeling 2 2 1 5 4 5 3 4 5 Sticky feeling 2 2 2 3 4 2 4 2 5 It can be seen from the above embodiments and comparative examples that the dual-phase essence of the present invention has a reasonable delamination time and excellent visual effect of the dual phase after delamination. For example, in Embodiment 1, its moisturizing, absorption speed, and softness are good, and the residual and sticky feeling are low. However, the absorption speed of Comparative Example 1 is slow, the separation time of Comparative Example 2 is too fast, and the moisturizing and softness are poor. The separation time of Comparative Examples 3-4 is too slow, and the visual effect after separation is poor. The separation time of Comparative Examples 5-6 is too fast, and the softness is poor. Comparative Examples 1-6 cannot meet the use requirements of the dual-phase essence.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A two-phase essence, characterized in that: The following components are included: Phase A: 2-8 parts of polyol, 0.03-0.08 parts of thickener, 0.01-0.1 parts of sodium hyaluronate, 51-68 parts of water; Phase B emollient oil 28-39 parts, B relative gravity 0.88-0.92; The volume ratio of the phase A to the phase B is 60:30 to 70:

40.

2. The dual-phase essence according to claim 1, characterized in that: The polyol is selected from any one of glycerol, 1,3-butylene glycol, 1,3-propylene glycol, 1,2-propylene glycol, 1,2-pentanediol, 1,2-hexanediol, dipropylene glycol, and PEG-8, or a combination of any two or more thereof; preferably, the polyol is selected from 1,3-propylene glycol and glycerol, the content of 1,3-propylene glycol is 2 to 5 parts, and the content of glycerol is 0.1 to 3 parts.

3. The dual-phase essence according to claim 1, characterized in that: The sodium hyaluronate is a high molecular weight sodium hyaluronate, and the molecular weight of the high molecular weight sodium hyaluronate is 1.0×10 6 ~ 1.8×10 6 .

4. The dual-phase essence according to claim 1, characterized in that: The thickener is one or more of gellan gum, carrageenan and xanthan gum, preferably xanthan gum.

5. The dual-phase essence according to claim 1, characterized in that: Phase A contains a preservative and a pH regulator. The preservative is hydroxyacetophenone, and the content is 0.1-1 parts, preferably 0.5 parts; the pH regulator is sodium citrate, and the content is 0-0.1 parts, preferably 0.08 parts.

6. The dual-phase essence according to claim 1, characterized in that: Phase A contains a soothing ingredient, which is a lactic acid bacteria fermentation product, yeast fermentation liquid, and the content is 0.01-1.0 part, preferably 0.5 part.

7. The dual-phase essence according to claim 1, characterized in that: Phase A contains a film-forming agent, which is a styrene / acrylic acid (ester) copolymer. The content of the film-forming agent is conventional in the art, preferably 0.01 to 0.1 parts, more preferably 0.02 parts.

8. The dual-phase essence according to claim 1, characterized in that: In phase B, the emollient oil is triglyceride, partial ester, dialkyl ether, dialkyl carbonate, hydrocarbon, paraffin, microcrystalline wax, mineral oil, fatty alcohol and vegetable oil; preferably, the emollient oil is selected from at least two of the vegetable oils, preferably, the emollient oil is squalane, sunflower oil, camellia oil, and the content is 3-6 parts of squalane, 24-29 parts of sunflower oil, and 1-4 parts of camellia oil.

9. The method for preparing the dual-phase essence according to claim 1, comprising the following steps: 1) Mix the raw materials of phase A and heat them to maintain at 38-42°C until they are evenly mixed; filter out the material and set aside for later use; 2) Mix the raw materials of phase B evenly; filter out the material and set aside for later use; 3) Mix phase A and phase B evenly to obtain the essence.

10. Use of the dual-phase essence according to any one of claims 1 to 8 as massage oil in the preparation of a skin external preparation.

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