A stable double-layer essential oil composition

Abstract

The present application relates to the technical field of essential oils, and is particularly a stable double-layered essential oil composition, which is composed of an upper layer of essential oil mixed layer and a lower layer of essence liquid layer; the upper layer of essential oil mixed layer is mainly composed of an essential oil and a white tea red ganoderma fermentation liquid, and the essential oil is formed into uniform oil droplets by high-speed stirring, forming a uniform system of white tea red ganoderma fermentation liquid encapsulating the essential oil; the lower layer of essence liquid layer is formed by mixing white tea red ganoderma fermentation liquid as a solvent, adding an appropriate amount of moisturizer, thickener, preservative and skin conditioner. The composition is kept at a high temperature of 48°C for 12 weeks, frozen at ‑10°C for 12 weeks, and kept under a hot and cold cycle (24 hours at ‑10°C, 2 hours to equilibrate to 25°C, and 24 hours at 50°C) for 4 weeks, and can still maintain a state of obvious separation of the upper and lower layers and a stable water-encapsulated grease state in the upper layer, and only needs to be gently shaken during use to form a uniform essence state of white tea red ganoderma fermentation liquid encapsulating oil droplets, which is a stable double-layered essential oil composition.

Description

Technical Field

[0001] The present application relates to the technical field of essential oils, and in particular to a stable double-layer essential oil composition. Background Art

[0002] Existing single-layer essence oils are mainly emollients, which are mainly a full-oil uniform system compounded with plant oils, mineral oils, etc., which form a hydrophobic film on the skin surface to replenish moisturizing oils to the skin, but cannot provide hydration and maintain the water-oil balance of the skin.

[0003] The existing double-layer essence oil has an upper layer composed of liquid oils mainly composed of vegetable oils and mineral oils, and a lower layer composed of moisturizers mainly composed of water. When used, it is shaken well to form an oil-water mixture, which can not only replenish water and moisturize, but also provide moisturizing effects. However, the double-layer essence oil is prone to the upper layer of oil being dispersed in the lower layer of essence in the form of oil droplets. With the intensity of shaking, the size and shape of the oil droplets vary. There are more and larger oil droplets in the upper layer, resulting in an uneven state of the essence oil when used. Moreover, a major difficulty in double-layer water-oil skin care products is to control the speed of water-oil separation after mixing. Too fast a separation speed will make it difficult for users to absorb the essence of the water phase and the oil phase at the same time, and the uneven distribution will affect the skin care effect, but too slow a separation also means that the essence is easy to change from clear and transparent to frosted glass, affecting the user's experience of the product. Summary of the invention

[0004] In view of this, the present application provides a stable double-layer essence oil composition, which solves the problem that the existing single-layer essence oil only moisturizes but does not hydrate, and the uneven mixing of the two phases during the use of the double-layer essence oil leads to uneven distribution of the double-layer essence oil, which affects the efficacy and experience. The double-layer essence oil composition of the present application has good stability. Not only can the upper essence oil mixed layer and the lower essence liquid layer be quickly mixed and evenly mixed by just gently shaking during use, but also the upper essence oil mixed layer and the lower essence liquid layer can be quickly separated after standing, and can maintain a good appearance under continuous high temperature, low temperature, and high and low temperature cycle conditions.

[0005] In order to achieve the above objectives, this application is implemented through the following technical solutions:

[0006] A stable double-layer essence oil composition, characterized by comprising an upper essence oil mixed layer and a lower essence liquid layer:

[0007] The upper essence oil mixed layer is mainly formed by mixing essence oil and white tea and red ganoderma fermentation liquid, and the lower essence liquid layer is formed by mixing white tea and red ganoderma fermentation liquid as solvent, with appropriate amounts of moisturizer, thickener, preservative and skin conditioner added;

[0008] The mass proportions of the essential oil, white tea and red ganoderma fermented liquid in the upper essential oil mixed layer, and the lower essence liquid layer are as follows:

[0009] 15-35 parts of essence oil in the upper essence oil mixed layer,

[0010] 8-20 portions of white tea and red ganoderma fermented liquid in the upper essential oil mixed layer,

[0011] The lower essence layer contains 52-76 parts.

[0012] Specifically, the essence oil in the upper essence oil mixed layer is mainly prepared from the following components in the following mass proportions:

[0013]

[0014]

[0015] Specifically: the vegetable oil is preferably an oil with a melting point below 20°C and in liquid state at room temperature.

[0016] Specifically, the plant oil is one of argania spinosa kernel oil, meadowfoam seed oil, evening primrose oil, grape seed oil, macadamia nut seed oil, sunflower seed oil, sweet almond oil, wheat germ oil, camellia seed oil, tea seed oil, tea oil, salvia miltiorrhiza oil, lemon peel oil, cedarwood oil, and sandalwood seed oil, or any combination of any two or more thereof.

[0017] Specifically, the vegetable oil is further preferably one of meadowfoam seed oil, camellia seed oil, and sweet almond oil, or any combination of any two or more thereof.

[0018] Specifically, the synthetic or semi-synthetic oil is preferably one of isononyl isononanoate, caprylic / capric triglyceride, cetyl ethylhexanoate, ethylhexanoic acid palmitate, glyceryl tri(ethylhexanoate), isopropyl myristate, hydrogenated polyisobutene, dicaprylyl carbonate, isohexadecane, isododecane, pentaerythritol tetracaprylate / tetracaprate, or any combination of any two or more thereof.

[0019] Specifically, the synthetic or semi-synthetic oil is further preferably one of dicaprylyl carbonate, caprylic / capric triglyceride, tri(ethylhexanoin), isohexadecane, and pentaerythritol tetracaprylate / tetracaprate, or any combination of any two or more thereof.

[0020] Specifically, the silicone oil is preferably one of polydimethylsiloxane, octyl polymethylsiloxane, polydimethylsiloxane alcohol, cyclohexasiloxane, cyclopentasiloxane, or any combination of any two or more thereof.

[0021] Specifically, the silicone oil is further preferably one of 5-viscosity, 10-viscosity, 20-viscosity, or 50-viscosity polydimethylsiloxanes or any combination of any two or more thereof.

[0022] Specifically, the antioxidant is preferably one of tocopherol (vitamin E), tocopherol acetate, butylated hydroxytoluene, pentaerythritol tetrakis (di-tert-butyl hydroxyhydrocinnamate) ester or any combination of any two or more thereof.

[0023] Specifically, the surfactant is preferably one of PEG-40 glyceryl cocoate, babassu seed oil glyceryl polyether-8 esters, PEG-6 caprylic / capric triglyceride, PEG-40 hydrogenated castor oil, polysorbate-20, PEG-7 glyceryl cocoate, sodium stearoyl glutamate, potassium lauryl phosphate, sodium stearoyl lactylate polyglyceryl-3 caprate, PEG-80 sorbitan laurate, or any combination of any two or more thereof.

[0024] Specifically, the surfactant is further preferably one of PEG-40 hydrogenated castor oil, polysorbate-20, and PEG-80 sorbitan laurate, or any combination of any two or more thereof.

[0025] Specifically, the lower essence layer is mainly prepared from the following components in the following mass ratios:

[0026]

[0027] Specifically, the moisturizing agent is preferably one of sodium hyaluronate, trehalose, betaine, erythritol, sorbitol, glycerol, propylene glycol, butylene glycol, 1,2-pentanediol, 1,3-propanediol, glyceryl polyether-26, and dipropylene glycol, or any combination of any two or more thereof.

[0028] Specifically, the thickener is preferably one of xanthan gum, carbomer, hydroxyethyl cellulose, acrylates / beheneth-25 methacrylate copolymer, acrylates copolymer, acrylates cross-linked polymer-4, or any combination of any two or more thereof.

[0029] Specifically, the preservative is preferably one or any combination of any two or more of p-hydroxyacetophenone, hexylene glycol, caprylhydroxamic acid, caprylyl glycol, benzoic acid, and salts and esters of benzoic acid.

[0030] Specifically, the skin conditioning agent is preferably any combination of any five or more of allantoin, panthenol, ceramide, niacinamide, tranexamic acid, ascorbic acid and its derivatives, Tremella fuciformis extract, Glycyrrhiza glabra extract, Scutellaria baicalensis extract, carnosine, acetyl chitosan, tetrahydromethylpyrimidine carboxylic acid, acetyl hexapeptide-8, Pseudostellaria heterophylla extract, Lactobacillus fermentation lysate, white truffle extract, caffeine, Centella asiatica extract, Gardenia jasminoides fruit extract, cocoa extract, chamomile flower extract, and rosemary leaf extract.

[0031] The preparation method of the upper essence oil mixed layer of any of the above-mentioned stable double-layer essence oil compositions is as follows: after mixing the essence oil with the white tea and red ganoderma fermentation liquid, stir at a stirring frequency of 40-50 Hz for 8-20 minutes.

[0032] In the upper essence oil mixed layer of the double-layer essence oil composition of the present invention, the essence oil is mixed with the white tea red ganoderma fermentation liquid through a surfactant, and through high-speed stirring, the essence oil is formed into uniform oil droplets, which are wrapped by the external phase white tea red ganoderma fermentation liquid, forming a uniform system of white tea red ganoderma fermentation liquid wrapped essence oil, and then the upper essence oil mixed layer formed by the configured white tea red ganoderma fermentation liquid wrapped essence oil is added to the lower essence liquid with white tea red ganoderma fermentation liquid as a solvent, that is, a double-layer essence oil composition is formed. The double-layer essence oil composition of the present invention has two layers in appearance when standing still, and only needs to be gently shaken when used to form a uniform essence state of white tea red ganoderma fermentation liquid wrapped oil beads; after use, it is left to stand for 2 hours, and the upper layer of the essence oil wrapped by the white tea red ganoderma fermentation liquid floats on the upper layer again, and the lower layer presents a transparent or slightly turbid transparent liquid, and the appearance is an obvious double-layer state. After standing for 4 hours, the upper layer of the essence oil wrapped by the white tea red ganoderma fermentation liquid is completely separated from the lower essence liquid layer. Even when kept at a high temperature of 48°C for 12 weeks, at a frozen temperature of -10°C for 12 weeks, and at a hot and cold cycle (24 hours at -10°C, 2 hours to balance at 25°C, and 24 hours at 50°C) for 4 weeks, the upper and lower layers can still be clearly separated, and the upper layer can be stably wrapped in water. There is no oil aggregation or oil-liquid separation. It is a stable double-layer essence oil composition. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a physical picture of the state of forming a uniform essential oil after the composition of the present application is shaken;

[0034] Figure 2 This is a physical picture of the extraordinary stability test of the compositions of Examples 1-4 of the present application.

[0035] Figure 3 This is a physical picture of the extraordinary stability test of the compositions of Examples 5-8 of the present application.

[0036] Figure 4 This is a physical picture of the extraordinary stability test of the compositions of Examples 9-12 of the present application. DETAILED DESCRIPTION

[0037] The exemplary embodiments disclosed in the present invention are described in more detail below. These embodiments are intended to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art. Although exemplary embodiments disclosed in the present invention are shown, it should be understood that the present invention should not be limited by the embodiments set forth herein.

[0038] The present invention is a stable double-layer essence oil composition, which consists of an upper essence oil mixed layer and a lower essence liquid layer. The upper essence oil mixed layer is mainly composed of an essence oil and a white tea red ganoderma fermentation liquid, and the lower essence liquid layer is a mixture of white tea red ganoderma fermentation liquid as a solvent, and an appropriate amount of a moisturizer, a thickener, a preservative and a skin conditioner are added. The mass fractions of the essence oil, the white tea red ganoderma fermentation liquid in the upper essence oil mixed layer, and the lower essence liquid layer are as follows: the essence oil in the upper essence oil mixed layer is 15-35 parts, the white tea red ganoderma fermentation liquid in the upper essence oil mixed layer is 8-20 parts, and the lower essence liquid layer is 52-76 parts.

[0039] The essence oil in the upper essence oil mixed layer of the present invention is mainly prepared from the following components in the following mass ratios: 4-12 parts of vegetable oil, 6-18 parts of synthetic or semi-synthetic oil, 3-10 parts of silicone oil, 0.05-0.8 parts of antioxidant, and 0.2-1.5 parts of surfactant. The lower essence layer of the present invention uses white tea and red ganoderma fermentation liquid as a solvent, and the added solvent white tea and red ganoderma fermentation liquid is 45-70 parts, 0.03-5 parts of moisturizer, 0.05-2 parts of thickener, 0.2-3 parts of preservative, and 3-12 parts of skin conditioner.

[0040] The white tea red ganoderma fermentation liquid involved in the present invention is produced and sold by Hebei Jinlu Biotechnology Co., Ltd.

[0041] When preparing the upper essential oil mixed layer, the essential oil and the white tea and red ginseng fermented liquid are mixed in the above proportions, and stirred at a stirring speed of 40-50 Hz for 8-20 minutes to form a uniform emulsion, in which a small amount of white tea and red ginseng fermented liquid wraps the essential oil.

[0042] The vegetable oil in the upper layer of oil of the present invention can be derived from the fruit, kernel, seed, wood and leaf of the plant. In order to achieve the above purpose, the vegetable oil is selected to have a melting point below 20°C and is in a liquid state at room temperature, such as one or any combination of any two or more of argania spinosa kernel oil, meadowfoam seed oil, evening primrose oil, grape seed oil, macadamia nut seed oil, sunflower seed oil, sweet almond oil, wheat germ oil, camellia seed oil, tea seed oil, tea oil, salvia miltiorrhiza oil, lemon peel oil, cedar wood oil, and sandalwood seed oil, and preferably one or any combination of any two or more of meadowfoam seed oil, camellia seed oil, and sweet almond oil with good antioxidant performance.

[0043] The synthetic or semi-synthetic grease in the upper layer of the present invention includes one or any combination of two or more of isononyl isononanoate, caprylic / capric triglyceride, cetyl alcohol ethylhexanoate, palmitic ethylhexanoate, glyceryl tri(ethylhexanoate), isopropyl myristate, hydrogenated polyisobutene, dioctyl carbonate, isohexadecane, isododecane, pentaerythritol tetraoctanoate / tetracaprate. The preferred synthetic or semi-synthetic grease has a freezing point below -15°C, preferably one or any combination of two or more of dioctyl carbonate, caprylic / capric triglyceride, isohexadecane, glyceryl tri(ethylhexanoate), pentaerythritol tetraoctanoate / tetracaprate.

[0044] The silicone oil of the upper layer grease of the present invention includes polydimethylsiloxane of different viscosities, octyl polymethylsiloxane, polydimethylsiloxane alcohol, cyclohexasiloxane, and cyclopentasiloxane, preferably one or any combination of any two or more of the silicone oils with low viscosity and good spreadability that are not easy to volatilize, preferably one or any combination of any two or more of the polydimethylsiloxanes with 5 viscosity, 10 viscosity, 20 viscosity, and 50 viscosity.

[0045] The antioxidant in the upper layer of fat of the present invention can be one of tocopherol (vitamin E), tocopherol acetate, butylated hydroxytoluene, pentaerythritol tetrakis (di-tert-butyl hydroxyhydrocinnamate) ester or any combination of any two or more thereof.

[0046] The surfactant of the upper layer of oil and fat of the present invention comprises one or any combination of any two or more of PEG-40 glyceryl cocoate, babassu seed oil glyceryl polyether-8 esters, PEG-6 caprylic / capric triglyceride, PEG-40 hydrogenated castor oil, polysorbate-20, PEG-7 glyceryl cocoate, sodium stearoyl glutamate, potassium lauryl phosphate, sodium stearoyl lactylate polyglyceryl-3 caprate, PEG-80 sorbitan laurate, etc., and the preferred surfactant has a hydrophilic-lipophilic balance value HLB between 15 and 18, and the preferred non-ionic surfactant comprises one or any combination of any two or more of PEG-40 hydrogenated castor oil, polysorbate-20, and PEG-80 sorbitan laurate.

[0047] The lower layer of the present invention uses white tea and red ganoderma fermentation liquid as solvent, and the added moisturizer can be one of sodium hyaluronate, trehalose, betaine, erythritol, sorbitol, glycerol, propylene glycol, butylene glycol, 1,2-pentanediol, 1,3-propylene glycol, glycerol polyether-26, dipropylene glycol, etc., or any combination of any two or more thereof.

[0048] The lower layer of the present invention uses white tea and red ganoderma fermentation liquid as solvent, and the added thickener can be one of xanthan gum, carbomer, hydroxyethyl cellulose, acrylates / behenyl alcohol polyether-25 methacrylate copolymer, acrylates copolymer, acrylates cross-linked polymer-4, or any combination of any two or more thereof.

[0049] The lower layer of the invention uses white tea and red ganoderma fermentation liquid as solvent, and the added preservative is one or any combination of any two or more of p-hydroxyacetophenone, hexylene glycol, caprylhydroxamic acid, caprylyl glycol, benzoic acid and salts and esters of benzoic acid.

[0050] The lower layer of the present invention uses white tea and red ganoderma fermentation liquid as a solvent, and the added skin conditioning agent can be composed of any five or more of allantoin, panthenol, ceramide, niacinamide, tranexamic acid, ascorbic acid and its derivatives, tremella extract, licorice extract, scutellaria extract, carnosine, acetyl chitosan, tetrahydromethylpyrimidine carboxylic acid, acetyl hexapeptide-8, pseudoginseng extract, lactobacillus fermentation lysate, white truffle extract, caffeine, Centella asiatica extract, gardenia fruit extract, cocoa extract, chamomile extract, and rosemary leaf extract.

[0051] The following table shows the composition ratios of Examples 1-4 of the present invention:

[0052]

[0053]

[0054] The preparation method of the upper essence oil mixed layer in Example 1-4 is to mix the essence oil with the white tea and red ganoderma fermentation liquid and stir the mixture at a stirring frequency of 40 Hz for 20 minutes.

[0055] The following table shows the composition ratios of Examples 5-8 of the present invention:

[0056]

[0057]

[0058] The preparation method of the upper essence oil mixed layer in Example 5-8 is to mix the essence oil with the white tea and red ganoderma fermentation liquid and stir it at a stirring frequency of 50 Hz for 8 minutes.

[0059] The following table shows the composition ratios of Examples 9-12 of the present invention:

[0060]

[0061]

[0062] The preparation method of the upper essence oil mixed layer in Examples 9-12 is to mix the essence oil with the white tea and red ganoderma fermentation liquid and then stir the mixture at a stirring frequency of 45 Hz for 13 minutes.

[0063] The above Examples 1-12 were subjected to an extraordinary stability test, and were kept at 48°C for 12 weeks, kept at -10°C for 12 weeks, and kept at 50°C for 24 hours (24 hours at -10°C, 2 hours to equilibrate to 25°C, and 24 hours at 50°C) for 4 weeks. If the upper layer can still maintain a stable water-encapsulated oil state without oil aggregation or oil-liquid separation, it is a stable double-layer essential oil composition.

[0064] The following table shows the results of the investigation of Examples 1-12 of the present invention:

[0065]

[0066]

[0067] Note: F means that the appearance of the composition after returning to room temperature is not significantly different from that before the test; N means that after the composition returns to room temperature, stratification, demulsification, precipitation and other phenomena occur, which are different from the appearance of the sample placed at room temperature. D means that the test cycle ends and the test is stopped.

[0068] From the results of Examples 1-12, it can be concluded that the upper layer can be kept in a stable water-enclosed oil state without oil aggregation or oil-liquid separation when kept at a high temperature of 48°C for 12 weeks, kept at a frozen temperature of -10°C for 12 weeks, and kept at a hot and cold cycle (24 hours at -10°C, 2 hours to balance at 25°C, and 24 hours at 50°C) for 4 weeks, and a stable double-layer essential oil composition can still be maintained.

[0069] The sample prepared in Example 1 is product A, the commercially available single-layer essence oil sample is product B, and the commercially available double-layer essence oil sample is product C, and a moisturizing effect test is performed. The number of participants in this test group is 36, and the test plan is as follows:

[0070] The test period was three weeks, and the subjects were divided into three groups.

[0071] The first group of 12 people used product A in the first week, product B in the second week, and product C in the third week.

[0072] The second group of 12 people used product B in the first week, product C in the second week, and product A in the third week.

[0073] The third group of 12 people used product C in the first week, product A in the second week, and product B in the third week.

[0074] Shake the sample thoroughly before use, apply an appropriate amount evenly on cleansed facial skin, and massage gently until absorbed. Use once in the morning and evening, and consumers will evaluate themselves, with a maximum score of 5 points.

[0075] The following table shows the test results:

[0076]

[0077] Note 1: A total of 4 subjects in the experimental group withdrew from the trial due to personal reasons, and one tester in the third group terminated the test due to personal reasons.

[0078] Note 2: Smearing feeling: The material is smooth when applied thinly

[0079] Absorption speed: easy to penetrate and absorb quickly

[0080] Moisturizing degree: After application, the skin is moisturized

[0081] Freshness: No stickiness or stuffiness after application

[0082] Moisturizing: Improve skin moisture

[0083] Firming: has a lifting effect and reduces fatigue

[0084] According to the feedback from the self-evaluation results of the subjects in the moisturizing effect test, product A prepared in specific embodiment 1 of a stable double-layer essence oil composition of the present invention has higher scores than products B and C in terms of overall product sensory perception, skin feel during use, feeling after use, and feeling after 7 days of use.

[0085] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stable double-layer essential oil composition, characterized in that: It consists of an upper essence oil mixed layer and a lower essence liquid layer: The upper essence oil mixed layer is mainly formed by mixing essence oil and white tea and red ganoderma fermentation liquid, and the lower essence liquid layer is formed by mixing white tea and red ganoderma fermentation liquid as solvent, with appropriate amounts of moisturizer, thickener, preservative and skin conditioner added; The mass proportions of the essential oil, white tea and red ganoderma fermented liquid in the upper essential oil mixed layer, and the lower essence liquid layer are as follows: 15-35 parts of essence oil in the upper essence oil mixing layer 8-20 portions of white tea and red ganoderma fermented liquid in the upper essential oil mixed layer The lower essence layer contains 52-76 parts.

2. A stable double-layer essential oil composition according to claim 1, characterized in that: The essence oil in the upper essence oil mixed layer is mainly prepared from the following components in the following mass proportions:

3. A stable double-layer essential oil composition according to claim 2, characterized in that: The vegetable oil is an oil with a melting point lower than 20°C and is in a liquid state at room temperature.

4. A stable double-layer essence oil composition according to claim 3, characterized in that: The vegetable oil is one of argania spinosa kernel oil, meadowfoam seed oil, evening primrose oil, grape seed oil, macadamia seed oil, sunflower seed oil, sweet almond oil, wheat germ oil, camellia seed oil, tea seed oil, tea oil, salvia miltiorrhiza oil, lemon peel oil, cedar wood oil, and sandalwood seed oil, or any combination of any two or more thereof.

5. A stable double-layer essential oil composition according to claim 4, characterized in that: The vegetable oil is one of meadowfoam seed oil, camellia seed oil and sweet almond oil or any combination of any two or more thereof.

6. A stable double-layer essential oil composition according to claim 2, characterized in that: The synthetic or semi-synthetic oil is one of isononyl isononanoate, caprylic / capric triglyceride, cetyl ethylhexanoate, palmitic acid ethylhexanoate, glyceryl tri(ethylhexanoate), isopropyl myristate, hydrogenated polyisobutene, dicaprylyl carbonate, isohexadecane, isododecane, etc., pentaerythritol tetracaprylate / tetracaprate or any combination of any two or more thereof.

7. A stable double-layer essential oil composition according to claim 6, characterized in that: The synthetic or semi-synthetic oil is one of dicaprylyl carbonate, caprylic / capric triglyceride, tri(ethylhexanoic acid) glyceryl, isohexadecane, pentaerythritol tetracaprylate / tetracaprate or any combination of any two or more thereof.

8. A stable double-layer essential oil composition according to claim 2, characterized in that: The silicone oil is one of polydimethylsiloxane, octyl polymethylsiloxane, polydimethylsiloxane alcohol, cyclohexasiloxane, cyclopentasiloxane or any combination of any two or more thereof.

9. A stable double-layer essential oil composition according to claim 8, characterized in that: The silicone oil is one of 5-viscosity, 10-viscosity, 20-viscosity, or 50-viscosity polydimethylsiloxanes or any combination of any two or more thereof.

10. A stable double-layer essential oil composition according to claim 2, characterized in that: The antioxidant is one of tocopherol (vitamin E), tocopherol acetate, butylated hydroxytoluene, pentaerythritol tetrakis (di-tert-butyl hydroxyhydrocinnamate) ester or any combination of any two or more thereof.

11. A stable double-layer essential oil composition according to claim 2, characterized in that: The surfactant is one of PEG-40 glyceryl cocoate, babassu seed oil glyceryl polyether-8 esters, PEG-6 caprylic / capric triglyceride, PEG-40 hydrogenated castor oil, polysorbate-20, PEG-7 glyceryl cocoate, sodium stearoyl glutamate, potassium lauryl phosphate, sodium stearoyl lactylate polyglyceryl-3 caprate, PEG-80 sorbitan laurate, or any combination of any two or more thereof.

12. A stable double-layer essential oil composition according to claim 11, characterized in that: The surfactant is one of PEG-40 hydrogenated castor oil, polysorbate-20, and PEG-80 sorbitan laurate, or any combination of any two or more thereof.

13. A stable double-layer essential oil composition according to claim 1, characterized in that: The lower essence layer is mainly prepared from the following components in the following mass ratios:

14. A stable double-layer essential oil composition according to claim 13, characterized in that: The moisturizing agent is one of sodium hyaluronate, trehalose, betaine, erythritol, sorbitol, glycerol, propylene glycol, butylene glycol, 1,2-pentanediol, 1,3-propylene glycol, glycerol polyether-26, and dipropylene glycol, or any combination of any two or more thereof.

15. A stable double-layer essential oil composition according to claim 13, characterized in that: The thickener is one of xanthan gum, carbomer, hydroxyethyl cellulose, acrylates / behenyl alcohol polyether-25 methacrylate copolymer, acrylates copolymer, acrylates cross-linked polymer-4, or any combination of any two or more thereof.

16. A stable double-layer essential oil composition according to claim 13, characterized in that: The preservative is one or any combination of any two or more of p-hydroxyacetophenone, hexylene glycol, caprylhydroxamic acid, caprylyl glycol, benzoic acid and salts or esters of benzoic acid.

17. A stable double-layer essential oil composition according to claim 13, characterized in that: The skin conditioning agent is any combination of any five or more of allantoin, panthenol, ceramide, niacinamide, tranexamic acid, ascorbic acid and its derivatives, tremella extract, licorice extract, scutellaria extract, carnosine, acetyl chitosan, tetrahydromethylpyrimidine carboxylic acid, acetyl hexapeptide-8, pseudoginseng extract, lactobacillus fermentation lysate, white truffle extract, caffeine, Centella asiatica extract, gardenia fruit extract, cocoa extract, chamomile extract, and rosemary leaf extract.

18. A stable double-layer essence oil composition according to any one of claims 1 to 17, characterized in that: The preparation method of the upper essence oil mixed layer is as follows: after mixing the essence oil with the white tea and red ganoderma fermentation liquid, stir at a stirring frequency of 40-50 Hz for 8-20 minutes.

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