Essence with moisturizing effect and preparation method thereof

Abstract

The invention relates to the technical field of skin care products, and in particular to an essence with moisturizing effect and a preparation method thereof. The essence comprises the following raw materials: collagen, sodium hyaluronate, plant extract, moisturizer, stabilizer, ceramide, bifid yeast, cholesterol, catalyst, oily solvent and deionized water; the moisturizer is selected from one or more of petrolatum, methyl gluceth-10, caprylyl glycol, ethoxydiglycol and dipropylene glycol; the essence of the invention adopts efficient moisturizing ingredients, which can penetrate into the bottom layer of the skin, provide long-lasting moisturizing effect, help repair damaged skin barrier and enhance the self-protection ability of the skin; the presence of plant extract and bifid yeast not only provides additional nutritional support, but also helps promote cell regeneration and delay the skin aging process; wheat germ oil or olive oil, two natural oils, are very friendly to the skin, are not easy to cause allergic reactions, and are suitable for use on various skin types.

Description

Technical Field

[0001] The invention relates to the technical field of skin care products, and in particular to an essence with moisturizing effect and a preparation method thereof. Background Art

[0002] Cosmetics refer to chemical industrial products that are spread on any part of the human body surface by smearing, spraying, etc. to achieve the effects of cleaning, maintenance, beautification, modification and changing appearance. According to the effect, cosmetics are divided into cleaning type, skin care type, basic type, beauty type and therapeutic type.

[0003] There are many moisturizing products available on the market for consumers to choose from. The moisturizing effect of these products is achieved by superposition of moisturizers and sealants. To achieve a good moisturizing effect, a large amount of moisturizers and sealants are required.

[0004] However, excessive use of sealants will make consumers feel "greasy" when using them. In addition, the superposition of various new moisturizers has greatly increased the cost of the product.

[0005] With age, environment, living conditions and other factors, the sebaceous glands and sweat glands of the skin will secrete abnormally, and the body's sebum and water secretion will gradually decrease. As the body's sebum secretion decreases, the skin's ability to retain water decreases, and the skin will gradually develop skin problems such as aging, dryness, wrinkles and dullness. At the same time, the skin will have immune disorders and dilated pores, which will lead to a lack of self-confidence and affect appearance.

[0006] Wrinkles and pigmentation are the main external features of skin aging, and are also taboos in the eyes of many girls. However, the existing soothing and moisturizing essences have a general anti-wrinkle effect. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides an essence with moisturizing effect and a preparation method thereof.

[0008] In a first aspect, the present invention provides an essence with moisturizing effect, comprising the following raw materials: collagen, sodium hyaluronate, plant extract, moisturizer, stabilizer, ceramide, bifida yeast, cholesterol, catalyst, oily solvent and deionized water;

[0009] The moisturizing agent is selected from one or more of petrolatum, methyl gluceth-10, caprylyl glycol, ethoxydiglycol and dipropylene glycol.

[0010] In the present invention, the mass ratio of collagen, sodium hyaluronate, plant extract, moisturizer, stabilizer, ceramide, bifida yeast, cholesterol, oily solvent and deionized water is (1-5): (0.1-2): (1-10): (2-8): (0.1-1): (0.5-3): (0.1-2): (0.8-2): (0.5-1): (1.5-9): (61-88.4).

[0011] In the present invention, the stabilizer is arachidyl alcohol and / or hydroxyethyl cellulose.

[0012] In the present invention, the oily solvent is wheat germ oil or olive oil.

[0013] In the present invention, the catalyst is dicyclohexylcarbodiimide.

[0014] In a second aspect, the present invention provides a method for preparing the essence with moisturizing effect as described in the first aspect, comprising the following steps:

[0015] S1, mixing ceramide and oily solvent evenly, then adding squalane and cholesterol, and heating to obtain an oil phase component;

[0016] S2, heating and mixing sodium hyaluronate and deionized water to obtain an aqueous phase component;

[0017] S3, adding the oil phase component prepared in step S1 to the water phase component prepared in step S2, cooling, then adding collagen, moisturizer, stabilizer, catalyst and bifida yeast, homogenizing, ultrasonically dispersing, cooling to room temperature, and preparing a moisturizing and repairing essence.

[0018] In the present invention, in step S1, the heating temperature is 50-60°C.

[0019] In the present invention, in step S2, the heating temperature is 40-70°C.

[0020] In the present invention, the temperature is lowered to 30-35°C in step S3.

[0021] In the present invention, in step S3, the speed of the homogenization process is 10000-12000 r / min, and the temperature of the solution during the homogenization process is lower than 35°C.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The essence of the present invention uses highly effective moisturizing ingredients that can penetrate deep into the skin to provide long-lasting moisturizing effects, and help repair damaged skin barriers and enhance the skin's self-protection ability; the presence of plant extracts and bifid yeast not only provides additional nutritional support, but also helps promote cell regeneration and delay the skin aging process; wheat germ oil or olive oil, two natural oils, are very skin-friendly, not prone to allergic reactions, and are suitable for use on all skin types.

[0024] (2) The preparation method provided by the present invention accelerates the chemical reaction rate and shortens the production cycle by introducing dicyclohexylcarbodiimide as a catalyst, while also reducing the possibility of by-product generation and improving product quality. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0026] Example 1

[0027] This embodiment provides an essence with moisturizing effect, comprising the following raw materials: collagen, sodium hyaluronate, plant extract, methyl gluceth-10, hydroxyethyl cellulose, ceramide, bifida yeast, cholesterol, dicyclohexylcarbodiimide, wheat germ oil and deionized water;

[0028] The plant extract is Centella asiatica extract;

[0029] The mass ratio of collagen, sodium hyaluronate, plant extract, methyl gluceth-10, hydroxyethylcellulose, ceramide, bifida yeast, cholesterol, dicyclohexylcarbodiimide, wheat germ oil and deionized water is 1:2:10:8:1:3:2:2:1:9:61.

[0030] This embodiment provides a method for preparing a moisturizing essence, comprising the following steps:

[0031] S1. Evenly mix ceramide and wheat germ oil, then add squalane and cholesterol, and heat to 55° C. to obtain an oil phase component;

[0032] S2. Heat and mix sodium hyaluronate and deionized water evenly at a heating temperature of 50° C. to obtain an aqueous phase component;

[0033] S3. Add the oil phase component prepared in step S1 to the water phase component prepared in step S2, cool the temperature to 32° C., then add collagen, methyl gluceth-10, hydroxyethyl cellulose, dicyclohexylcarbodiimide and bifid yeast, homogenize at a speed of 11000 r / min, and keep the solution temperature below 35° C., then disperse by ultrasonication, cool to room temperature, and prepare a moisturizing and repairing essence.

[0034] Example 2

[0035] This embodiment provides an essence with moisturizing effect, comprising the following raw materials: collagen, sodium hyaluronate, plant extract, methyl gluceth-10, hydroxyethyl cellulose, ceramide, bifida yeast, cholesterol, dicyclohexylcarbodiimide, wheat germ oil and deionized water;

[0036] The plant extract is Centella asiatica extract;

[0037] The mass ratio of collagen, sodium hyaluronate, plant extract, methyl gluceth-10, hydroxyethyl cellulose, ceramide, bifida yeast, cholesterol, dicyclohexylcarbodiimide, wheat germ oil and deionized water is 5:0.1:1:2:0.1:0.5:0.1:0.8:0.5:1.5:88.4.

[0038] This embodiment provides a method for preparing a moisturizing essence, comprising the following steps:

[0039] S1. Evenly mix ceramide and wheat germ oil, then add squalane and cholesterol, and heat to 55° C. to obtain an oil phase component;

[0040] S2. Heat and mix sodium hyaluronate and deionized water evenly at a heating temperature of 50° C. to obtain an aqueous phase component;

[0041] S3. Add the oil phase component prepared in step S1 to the water phase component prepared in step S2, cool the temperature to 32° C., then add collagen, methyl gluceth-10, hydroxyethyl cellulose, dicyclohexylcarbodiimide and bifid yeast, homogenize at a speed of 11000 r / min, and keep the solution temperature below 35° C., then disperse by ultrasonication, cool to room temperature, and prepare a moisturizing and repairing essence.

[0042] Example 3

[0043] This embodiment provides an essence with moisturizing effect, comprising the following raw materials: collagen, sodium hyaluronate, plant extract, methyl gluceth-10, hydroxyethyl cellulose, ceramide, bifida yeast, cholesterol, dicyclohexylcarbodiimide, wheat germ oil and deionized water;

[0044] The plant extract is Centella asiatica extract;

[0045] The mass ratio of collagen, sodium hyaluronate, plant extract, methyl gluceth-10, hydroxyethyl cellulose, ceramide, bifida yeast, cholesterol, dicyclohexylcarbodiimide, wheat germ oil and deionized water is 3:0.5:8:4:0.5:2:1:1:0.6:2.4:68.

[0046] This embodiment provides a method for preparing a moisturizing essence, comprising the following steps:

[0047] S1. Evenly mix ceramide and wheat germ oil, then add squalane and cholesterol, and heat to 55° C. to obtain an oil phase component;

[0048] S2. Heat and mix sodium hyaluronate and deionized water evenly at a heating temperature of 50° C. to obtain an aqueous phase component;

[0049] S3. Add the oil phase component prepared in step S1 to the water phase component prepared in step S2, cool the temperature to 32° C., then add collagen, methyl gluceth-10, hydroxyethyl cellulose, dicyclohexylcarbodiimide and bifid yeast, homogenize at a speed of 11000 r / min, and keep the solution temperature below 35° C., then disperse by ultrasonication, cool to room temperature, and prepare a moisturizing and repairing essence.

[0050] Comparative Example 1

[0051] Compared with Example 1, methyl gluceth-10 was replaced by ethoxydiglycol, and the remaining steps were the same as in Example 1.

[0052] Comparative Example 2

[0053] Compared with Example 1, methyl gluceth-10 was replaced by caprylyl glycol, and the remaining steps were the same as in Example 1.

[0054] Comparative Example 3

[0055] Compared with Example 1, methyl gluceth-10 was not added, and the remaining steps were the same as in Example 1.

[0056] Comparative Example 4

[0057] Compared with Example 1, methyl gluceth-10 and sodium hyaluronate were not added, and the remaining steps were the same as Example 1.

[0058] Comparative Example 5

[0059] Compared with Example 1, no bifid yeast and cholesterol were added, and the remaining steps were the same as in Example 1.

[0060] The moisturizing performance of Example 1 and Comparative Examples 1-5 was tested. Ten volunteers aged 20-40 were selected on a voluntary basis, half of them were male and half were female. They had no skin diseases, no immunodeficiency or autoimmune diseases, no history of severe allergies to cosmetics, and had not used hormone drugs in the past month. The subjects could not use any cosmetics or skin medications within three days.

[0061] Before the test, the subjects uniformly cleaned the forearm test area thoroughly with a mild detergent, wiped off the moisture and kept the forearm exposed. The subjects sat quietly for 30 minutes in an environment of 22±2℃ and relative humidity of 45±5%, during which they were not allowed to drink water or beverages, leave the test site at will, and keep their emotions stable.

[0062] During the experiment, use a marker to mark the test area with a range of 3cm*3cm. Mark 4-6 areas on the same arm, and the interval between areas should not be less than 2cm. The amount of sample used is about 2mg / cm2. Use latex gloves to evenly apply the sample to be tested on the corresponding test area. Use the CM825 skin moisture test probe to first measure the basic value of each test area, and then measure the water content of the sample group at 0.5h and 4h. Each area is tested 5 times in parallel and the average value is taken.

[0063] Skin moisture content change rate (%) = (moisture content after use - moisture content before use) / moisture content before use × 100%. The test results are shown in Table 1.

[0064] Table 1

[0065]

[0066] The test results show that, from the data in Table 1, it can be seen that after using the essence in Example 1, the change rates of the volunteers' skin moisture content after 0.5 hours and 4 hours were about 59% and 42% on average, respectively, showing significant short-term and long-term moisturizing effects, which indicates that it can quickly absorb and maintain skin moisture for a long time, providing effective moisturizing function.

[0067] Comparative Example 1 (ethoxydiglycol instead of methyl gluceth-10): The skin moisture content change rates after 0.5 hour and 4 hours were about 55% and 32% on average, respectively. Although there was still a certain moisturizing effect, it was significantly lower than that of Example 1, which indicates that methyl gluceth-10 has better moisturizing performance than ethoxydiglycol.

[0068] Comparative Example 2 (caprylyl glycol instead of methyl gluceth-10): The skin moisture content change rates after 0.5 hour and 4 hours were about 58% and 35% on average, respectively, close to the performance of Example 1, but the effect after 4 hours was slightly inferior. This shows that caprylyl glycol can also be used as a good moisturizer, but its long-term moisturizing ability is slightly inferior to methyl gluceth-10.

[0069] Comparative Example 3 (without addition of Methyl Gluceth-10): The skin moisture content change rates after 0.5 hour and 4 hours were about 52% and 32% on average, respectively, which were lower than that of Example 1. In particular, the moisturizing effect decreased significantly after 4 hours, emphasizing the importance of Methyl Gluceth-10 in maintaining long-term moisturizing.

[0070] Comparative Example 4 (without addition of methyl gluceth-10 and sodium hyaluronate): The skin moisture content change rates after 0.5 hour and 4 hours were about 58% and 34% on average, respectively. Although the effect within 0.5 hour was similar to that of Example 1, the moisturizing effect after 4 hours was significantly reduced, indicating the importance of the combined effect of sodium hyaluronate and methyl gluceth-10, especially for long-term moisturizing.

[0071] Comparative Example 5 (without addition of bifid yeast and cholesterol): The skin moisture content change rates after 0.5 hour and 4 hours were about 58% and 31% on average, respectively. The overall moisturizing effect was lower than that of Example 1, indicating the important role of bifid yeast and cholesterol in enhancing the skin barrier function and promoting cell repair, which helps to improve the comprehensive skin care effect of the product.

[0072] By comparing the data of Example 1 and each comparative example, it can be seen that methyl gluceth-10 is a very effective moisturizing ingredient, especially in prolonging the moisturizing time. The combined use of sodium hyaluronate and methyl gluceth-10 can significantly improve the moisturizing effect of the product, especially long-term moisturizing. The addition of bifida yeast and cholesterol not only enhances the moisturizing effect of the product, but also may promote the repair of the skin barrier and cell regeneration.

[0073] The specific embodiments further describe the present invention, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A moisturizing essence, characterized in that: The following raw materials are included: collagen, sodium hyaluronate, plant extract, moisturizer, stabilizer, ceramide, bifida yeast, cholesterol, catalyst, oily solvent and deionized water; The moisturizing agent is selected from one or more of petrolatum, methyl gluceth-10, caprylyl glycol, ethoxydiglycol and dipropylene glycol.

2. The essence with moisturizing effect according to claim 1, characterized in that: The mass ratio of the collagen, sodium hyaluronate, plant extract, moisturizer, stabilizer, ceramide, bifida yeast, cholesterol, oily solvent and deionized water is (1-5): (0.1-2): (1-10): (2-8): (0.1-1): (0.5-3): (0.1-2): (0.8-2): (0.5-1): (1.5-9): (61-88.4).

3. The essence with moisturizing effect according to claim 1, characterized in that: The stabilizer is arachidyl alcohol and / or hydroxyethyl cellulose.

4. The essence with moisturizing effect according to claim 1, characterized in that: The oily solvent is wheat germ oil or olive oil.

5. The essence with moisturizing effect according to claim 1, characterized in that: The catalyst is dicyclohexylcarbodiimide.

6. A method for preparing the essence with moisturizing effect as claimed in claims 1 to 5, characterized in that: The steps include: S1, mixing ceramide and oily solvent evenly, then adding squalane and cholesterol, and heating to obtain an oil phase component; S2, heating and mixing sodium hyaluronate and deionized water to obtain an aqueous phase component; S3, adding the oil phase component prepared in step S1 to the water phase component prepared in step S2, cooling, then adding collagen, moisturizer, stabilizer, catalyst and bifida yeast, homogenizing, ultrasonically dispersing, cooling to room temperature, and preparing a moisturizing and repairing essence.

7. The method for preparing a moisturizing essence according to claim 6, characterized in that: In the step S1, the heating temperature is 50-60°C.

8. The method for preparing a moisturizing essence according to claim 6, characterized in that: In step S2, the heating temperature is 40-70°C.

9. The method for preparing a moisturizing essence according to claim 6, characterized in that: In step S3, the temperature is lowered to 30-35°C.

10. The method for preparing a moisturizing essence according to claim 6, characterized in that: In the step S3, the speed of the homogenization process is 10000-12000 r / min, and the temperature of the solution during the homogenization process is lower than 35°C.

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