An ethanol-free linaloe oil perfume and a method for preparing the same

Abstract

The present application relates to the field of perfume technology, and discloses an ethanol-free agilawood essential oil perfume and a preparation method thereof. The ethanol-free agilawood essential oil perfume comprises the following components in parts by mass: 7-12 parts of oil-soluble agilawood extract; 12-20 parts of a composite solubilizer; 5-8 parts of a composite solubilizing aid; 3-6 parts of a long-acting fixative; and 45-65 parts of deionized water. The composite solubilizer is a composite of isomeric tridecanol ethers, hydrogenated castor oil polyoxyethylene ethers and C12-18 alkyl glucoside. The composite solubilizing aid is a composite of polyethylene glycol-8, polyethylene glycol-300 and dipropylene glycol. The present application has the advantages of improving the perfume's fragrance retention performance, reducing the perfume's irritation and making the skin feel more comfortable.

Description

Technical Field

[0001] This invention relates to the field of perfumes, and in particular to an ethanol-free agarwood essential oil perfume and its preparation method. Background Technology

[0002] Most existing perfumes use ethanol as a solvent, dissolving oil-soluble fragrance components with a large amount of ethanol. Although this type of perfume has a stable system, the presence of a large amount of ethanol makes it highly irritating to the skin, and it is also a flammable and explosive product. Furthermore, ethanol is volatile, resulting in a short lasting fragrance.

[0003] To overcome the shortcomings of ethanol-based perfumes, some perfumes use deionized water as a solvent and add large amounts of polyethylene, phosphate, and glyceride surfactants. While these perfumes can achieve a clear and transparent appearance, the excessive surfactant content leads to a sticky feel on the skin and remains highly irritating. Furthermore, they fail to effectively improve the lasting power of the fragrance, making it difficult to meet consumer needs. Therefore, there is still room for improvement. Summary of the Invention

[0004] In order to improve the fragrance retention, reduce the irritation of the perfume and make it more comfortable on the skin, this application provides an ethanol-free agarwood essential oil perfume and its preparation method.

[0005] In the first aspect, this application provides an ethanol-free agarwood essential oil perfume, employing the following technical solution: An ethanol-free agarwood essential oil perfume comprises the following components in parts by weight: 7-12 parts of oil-soluble agarwood extract; 12-20 parts of composite solubilizer; 5-8 parts of compound solubilizing agent; Long-lasting fragrance agent 3-6 parts; 45-65 parts deionized water; The composite solubilizer is a combination of isomeric tridecyl alcohol ether, hydrogenated castor oil polyoxyethylene ether, and C12-18 alkyl glucoside. The composite solubilizing agent is a mixture of polyethylene glycol-8, polyethylene glycol-300, and dipropylene glycol.

[0006] By adopting the above technical solution and using a composite solubilizer composed of isomeric tridecyl alcohol ether, hydrogenated castor oil polyoxyethylene ether, and C12-18 alkyl glucoside, the oil-soluble agarwood extract can be stably and evenly dispersed in deionized water. The resulting ethanol-free perfume remains clear and transparent, and is not prone to turbidity. By combining it with a composite solubilizing agent composed of polyethylene glycol-8, polyethylene glycol-300, and dipropylene glycol, the solubilizing effect is long-lasting. The resulting perfume does not contain a large amount of irritating ingredients, has low skin irritation, and does not produce a severe sticky feeling, resulting in a more refreshing and comfortable skin feel. Furthermore, the addition of a long-lasting fragrance agent makes the perfume have a more lasting fragrance effect, which well meets the needs of consumers.

[0007] Preferably, in the composite solubilizer, the mass ratio of isomeric tridecyl alcohol ether, hydrogenated castor oil polyoxyethylene ether, and C12-18 alkyl glucoside is 5-7:6-8:7-9.

[0008] By adopting the above technical solution and by specifically selecting the mass ratio of isotridecyl alcohol ether, hydrogenated castor oil polyoxyethylene ether, and C12-18 alkyl glucoside, the solubilization effect is more stable and the clarity and transparency are better maintained for a longer period of time.

[0009] Preferably, the mass ratio of polyethylene glycol-8, polyethylene glycol-300, and dipropylene glycol in the composite solubilizing agent is 3-4:1-2:5-6.

[0010] By adopting the above technical solution and specifically selecting the mass ratio of polyethylene glycol-8, polyethylene glycol-300, and dipropylene glycol, the solubilization effect is further improved, and the perfume is less likely to become cloudy.

[0011] Preferably, the long-lasting fragrance agent is one or more of the following: hydroxyethyl cellulose, sodium carboxymethyl cellulose, xanthan gum, carrageenan, gum arabic, pectin, chitosan, poloxamer, polyvinyl alcohol, polyvinylpyrrolidone, and carbomer.

[0012] By adopting the above technical solution and adding high-molecular fragrance-retaining ingredients, the fragrance can be coated on the skin to form a thin film, allowing the agarwood fragrance components to be slowly released and achieve a long-lasting fragrance effect. Preferably, the long-lasting fragrance agent is a compound of polyvinylpyrrolidone K30 and carbomer 941.

[0013] By adopting the above technical solution and specifically selecting the compound of polyvinylpyrrolidone K30 and carbomer 941, the resulting film is more stable and has a longer-lasting fragrance effect.

[0014] Preferably, in the long-lasting fragrance agent, the mass ratio of polyvinylpyrrolidone K30 to carbomer 941 is 3-4:3-4.

[0015] By adopting the above technical solution and specifically selecting the mass ratio of polyvinylpyrrolidone K30 and carbomer 941, the fragrance retention effect can be better improved, and the skin feel can be kept fresh and comfortable.

[0016] Secondly, this application provides a method for preparing an ethanol-free agarwood essential oil perfume, employing the following technical solution: A method for preparing the above-mentioned ethanol-free agarwood essential oil perfume includes the following steps: Step 1), mix the long-lasting fragrance agent and deionized water evenly to obtain the aqueous phase; Step 2), mix the oil-soluble agarwood extract, compound solubilizer, and compound solubilizing agent evenly to obtain the oil phase; Step 3): While keeping the aqueous phase stirred, add the oil phase to the aqueous phase and mix well to obtain an ethanol-free agarwood essential oil perfume.

[0017] By adopting the above technical solution, the ethanol-free agarwood essential oil perfume produced is non-irritating to the skin, has a refreshing and comfortable feel, and has a long-lasting fragrance effect, which well meets the needs of consumers.

[0018] Preferably, in step 1), after mixing the long-lasting fragrance agent and deionized water, the pH is adjusted to 6.0-7.0.

[0019] By adopting the above technical solution and adjusting the pH value, the system is made easier to maintain transparency and less prone to turbidity.

[0020] In summary, this application has the following beneficial effects: 1. Because this application uses a composite solubilizer composed of isomeric tridecyl alcohol ether, hydrogenated castor oil polyoxyethylene ether, and C12-18 alkyl glucoside, the oil-soluble agarwood extract can be stably and evenly dispersed in deionized water. The resulting ethanol-free perfume remains clear and transparent, and is not prone to turbidity. By combining it with a composite solubilizing agent composed of polyethylene glycol-8, polyethylene glycol-300, and dipropylene glycol, the solubilizing effect is long-lasting. Moreover, the resulting perfume does not contain a large number of irritating ingredients, has low skin irritation, and does not produce a severe sticky feeling, resulting in a more refreshing and comfortable skin feel. Furthermore, the addition of a long-lasting fragrance agent makes the perfume have a more lasting fragrance effect, which well meets the needs of consumers.

[0021] 2. In this application, by specifically selecting the mass ratio of isotridecyl alcohol ether, hydrogenated castor oil polyoxyethylene ether, and C12-18 alkyl glucoside, the solubilization effect is more stable and the clarity and transparency are better maintained for a longer period of time.

[0022] 3. In this application, the solubilization effect is further improved by specifically selecting the mass ratio of polyethylene glycol-8, polyethylene glycol-300, and dipropylene glycol, making the perfume less prone to turbidity. Detailed Implementation

[0023] The present application will be further described in detail below with reference to the embodiments.

[0024] Example 1

[0025] An ethanol-free agarwood essential oil perfume is prepared as follows: Step 1): Add 2 kg of polyvinylpyrrolidone K30, 0.2 kg of carbomer 941, and 65 kg of deionized water to the aqueous phase pot, stir at 300 r / min for 10 min, add a trace amount of triethanolamine to adjust the pH to 6.5 ± 0.5, and obtain the aqueous phase.

[0026] Step 2): Add 7 kg of oil-soluble agarwood extract, 3 kg of isomeric tridecyl ether, 4 kg of hydrogenated castor oil polyoxyethylene ether, 5 kg of C12-18 alkyl glucoside, 2 kg of polyethylene glycol-8, 1 kg of polyethylene glycol-300, and 2 kg of dipropylene glycol into the oil phase pot, stir at 400 r / min for 5 min to obtain the oil phase.

[0027] Step 3): In the aqueous phase pot, the aqueous phase is stirred at a speed of 300 r / min. Then, the oil phase is added to the aqueous phase and stirred at a speed of 300 r / min for 5 min to obtain ethanol-free agarwood essential oil perfume.

[0028] Polyvinylpyrrolidone K30 was purchased from Shandong Maofa Chemical Co., Ltd., with a purity of 99%.

[0029] Carbomer 941 was purchased from Hubei Kemaidi Chemical Co., Ltd., with a purity of 99%.

[0030] The oil-soluble agarwood extract is agarwood essential oil, purchased from Wuhan Huaxiang Kejie Biotechnology Co., Ltd., and is a product of supercritical extraction.

[0031] The isomeric tridecyl alcohol ether was purchased from Shanghai Rongfu New Energy Technology Co., Ltd., model number: E1310.

[0032] The hydrogenated castor oil polyoxyethylene ether was purchased from Jinan Hongteng Weiye New Materials Co., Ltd., model: CO-40.

[0033] C12-18 alkyl glucoside was purchased from Hubei GREAT Biomedical Technology Co., Ltd., model: GREAT9760.

[0034] Polyethylene glycol-8 was purchased from Hubei Xinyuhong Biomedical Technology Co., Ltd.

[0035] Polyethylene glycol-300 was purchased from Wuhan Lingfan Technology Co., Ltd.

[0036] Dipropylene glycol was purchased from Shanghai Kirsenberg Chemical Technology Co., Ltd.

[0037] Example 2

[0038] An ethanol-free agarwood essential oil perfume is prepared as follows: Step 1): Add 3.5 kg of polyvinylpyrrolidone K30, 0.4 kg of carbomer 941, and 55 kg of deionized water to the aqueous phase pot, stir at 400 r / min for 15 min, add a trace amount of triethanolamine to adjust the pH to 6.5 ± 0.5, and obtain the aqueous phase.

[0039] Step 2): Add 10 kg of oil-soluble agarwood extract, 4 kg of isomeric tridecyl ether, 5 kg of hydrogenated castor oil polyoxyethylene ether, 6 kg of C12-18 alkyl glucoside, 3 kg of polyethylene glycol-8, 1 kg of polyethylene glycol-300, and 3.5 kg of dipropylene glycol into the oil phase pot, stir at 500 r / min for 8 min to obtain the oil phase.

[0040] Step 3): The aqueous phase is stirred at 400 rpm in the water phase pot. Then the oil phase is added to the aqueous phase and stirred at 400 rpm for 10 minutes to obtain ethanol-free agarwood essential oil perfume.

[0041] Polyvinylpyrrolidone K30 was purchased from Shandong Maofa Chemical Co., Ltd., with a purity of 99%.

[0042] Carbomer 941 was purchased from Hubei Kemaidi Chemical Co., Ltd., with a purity of 99%.

[0043] The oil-soluble agarwood extract is agarwood essential oil, purchased from Wuhan Huaxiang Kejie Biotechnology Co., Ltd., and is a product of supercritical extraction.

[0044] The isomeric tridecyl alcohol ether was purchased from Shanghai Rongfu New Energy Technology Co., Ltd., model number: E1310.

[0045] The hydrogenated castor oil polyoxyethylene ether was purchased from Jinan Hongteng Weiye New Materials Co., Ltd., model: CO-40.

[0046] C12-18 alkyl glucoside was purchased from Hubei GREAT Biomedical Technology Co., Ltd., model: GREAT9760.

[0047] Polyethylene glycol-8 was purchased from Hubei Xinyuhong Biomedical Technology Co., Ltd.

[0048] Polyethylene glycol-300 was purchased from Wuhan Lingfan Technology Co., Ltd.

[0049] Dipropylene glycol was purchased from Shanghai Kirsenberg Chemical Technology Co., Ltd.

[0050] Example 3

[0051] An ethanol-free agarwood essential oil perfume is prepared as follows: Step 1): Add 4 kg of polyvinylpyrrolidone K30, 0.4 kg of carbomer 941 and 45 kg of deionized water into the aqueous phase pot, stir at 500 r / min for 20 min, add a trace amount of triethanolamine to adjust the pH to 6.5 ± 0.5, and obtain the aqueous phase.

[0052] Step 2): Add 12 kg of oil-soluble agarwood extract, 6 kg of isomeric tridecyl ether, 6 kg of hydrogenated castor oil polyoxyethylene ether, 7 kg of C12-18 alkyl glucoside, 3 kg of polyethylene glycol-8, 2 kg of polyethylene glycol-300, and 3 kg of dipropylene glycol into the oil phase pot, stir for 10 min at 600 r / min to obtain the oil phase.

[0053] Step 3): In the aqueous phase pot, the aqueous phase is stirred at a speed of 500 r / min. Then, the oil phase is added to the aqueous phase and stirred at a speed of 500 r / min for 15 min to obtain ethanol-free agarwood essential oil perfume.

[0054] Polyvinylpyrrolidone K30 was purchased from Shandong Maofa Chemical Co., Ltd., with a purity of 99%.

[0055] Carbomer 941 was purchased from Hubei Kemaidi Chemical Co., Ltd., with a purity of 99%.

[0056] The oil-soluble agarwood extract is agarwood essential oil, purchased from Wuhan Huaxiang Kejie Biotechnology Co., Ltd., and is a product of supercritical extraction.

[0057] The isomeric tridecyl alcohol ether was purchased from Shanghai Rongfu New Energy Technology Co., Ltd., model number: E1310.

[0058] The hydrogenated castor oil polyoxyethylene ether was purchased from Jinan Hongteng Weiye New Materials Co., Ltd., model: CO-40.

[0059] C12-18 alkyl glucoside was purchased from Hubei GREAT Biomedical Technology Co., Ltd., model: GREAT9760.

[0060] Polyethylene glycol-8 was purchased from Hubei Xinyuhong Biomedical Technology Co., Ltd.

[0061] Polyethylene glycol-300 was purchased from Wuhan Lingfan Technology Co., Ltd.

[0062] Dipropylene glycol was purchased from Shanghai Kirsenberg Chemical Technology Co., Ltd.

[0063] Comparative Example 1 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: Tween-20 was used to replace isomeric tridecyl alcohol ether in equal amounts; oleyl alcohol polyoxyethylene ether was used to replace hydrogenated castor oil polyoxyethylene ether in equal amounts; and Pingpingjia O-20 was used to replace C12-18 alkyl glucoside in equal amounts.

[0064] Tween-20 was purchased from Jiangsu Pulesi Biotechnology Co., Ltd.

[0065] The oleyl alcohol polyoxyethylene ether was purchased from Greenlink (Jining) Chemical Technology Co., Ltd., model: OV-20.

[0066] Pingpingjia O-20 was purchased from Wuhan Lingfan Technology Co., Ltd.

[0067] Comparative Example 2 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: The isomeric tridecyl ether was replaced with an equal amount of Tween-20.

[0068] Tween-20 was purchased from Jiangsu Pulesi Biotechnology Co., Ltd.

[0069] Comparative Example 3 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: Hydrogenated castor oil polyoxyethylene ether was replaced with an equal amount of oleyl alcohol polyoxyethylene ether.

[0070] The oleyl alcohol polyoxyethylene ether was purchased from Greenlink (Jining) Chemical Technology Co., Ltd., model: OV-20.

[0071] Comparative Example 4 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: The C12-18 alkyl glucoside was replaced by an equal amount of Pingping plus O-20.

[0072] Pingpingjia O-20 was purchased from Wuhan Lingfan Technology Co., Ltd.

[0073] Comparative Example 5 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: The isomeric tridecyl alcohol ether, hydrogenated castor oil polyoxyethylene ether, and C12-18 alkyl glucoside were replaced with an equal amount of Tween-20.

[0074] Tween-20 was purchased from Jiangsu Pulesi Biotechnology Co., Ltd.

[0075] Comparative Example 6 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: Oleol polyoxyethylene ether was used to replace isomeric tridecyl alcohol ether in equal amounts; oleol polyoxyethylene ether was used to replace hydrogenated castor oil polyoxyethylene ether in equal amounts; and oleol polyoxyethylene ether was used to replace C12-18 alkyl glucoside in equal amounts.

[0076] The oleyl alcohol polyoxyethylene ether was purchased from Greenlink (Jining) Chemical Technology Co., Ltd., model: OV-20.

[0077] Comparative Example 7 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: The isomeric tridecyl alcohol ether, hydrogenated castor oil polyoxyethylene ether, and C12-18 alkyl glucoside were replaced by an equal amount of Pingping plus O-20.

[0078] Pingpingjia O-20 was purchased from Wuhan Lingfan Technology Co., Ltd.

[0079] Comparative Example 8 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: Hydrogenated castor oil polyoxyethylene ether was replaced by isotridecyl alcohol ether in equal amounts, and C12-18 alkyl glucoside was replaced by isotridecyl alcohol ether in equal amounts.

[0080] Comparative Example 9 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: Hydrogenated castor oil polyoxyethylene ether was used to replace isomeric tridecanol ether in equal amounts, and hydrogenated castor oil polyoxyethylene ether was used to replace C12-18 alkyl glucoside in equal amounts.

[0081] Comparative Example 10 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: The isomeric tridecyl alcohol ether was replaced by an equal amount of C12-18 alkyl glucoside, and the hydrogenated castor oil polyoxyethylene ether was replaced by an equal amount of C12-18 alkyl glucoside.

[0082] Comparative Example 11 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: Polyethylene glycol-8 was replaced with an equal amount of polyethylene glycol-400, polyethylene glycol-300 was replaced with an equal amount of polyethylene glycol-600, and dipropylene glycol was replaced with an equal amount of glycerol.

[0083] Polyethylene glycol-400 was purchased from Jinan Dahui Chemical Technology Co., Ltd.

[0084] Polyethylene glycol-600 was purchased from Xi'an Hongyao Pharmaceutical Excipients Co., Ltd.

[0085] Glycerol was purchased from Jinan Zhenyang Biotechnology Co., Ltd., with a purity of 99%.

[0086] Comparative Example 12 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: Polyethylene glycol-8 was replaced with an equal amount of polyethylene glycol-400.

[0087] Polyethylene glycol-400 was purchased from Jinan Dahui Chemical Technology Co., Ltd.

[0088] Comparative Example 13 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: Polyethylene glycol-300 was replaced with an equal amount of polyethylene glycol-600.

[0089] Polyethylene glycol-600 was purchased from Xi'an Hongyao Pharmaceutical Excipients Co., Ltd.

[0090] Comparative Example 14 An ethanol-free agarwood essential oil perfume, differing from Example 2 only in that: Glycerol was used to replace dipropylene glycol in equal amounts.

[0091] Glycerol was purchased from Jinan Zhenyang Biotechnology Co., Ltd., with a purity of 99%.

[0092] Experiment 1 Take 100ml of the alcohol-free agarwood essential oil perfume from each example and comparative example, place it in a transparent glass bottle, seal it, and prepare the test sample. Place the test sample in a 40℃ constant temperature oven for 30 days. After taking out the test sample, observe whether the alcohol-free agarwood essential oil perfume is clear and transparent and record it.

[0093] Experiment 2 Take 0.5g of the alcohol-free agarwood essential oil perfume from each example and comparative example and drop it onto a scent paper. Keep it at a constant temperature of 37°C and a constant humidity of 60% for 24 hours. Weigh the scent paper again and calculate the weight of the remaining perfume. The higher the weight of the remaining perfume, the better the fragrance retention effect.

[0094] The specific steps are as follows: Place a 20mm*20mm scent paper on an electronic balance and record its weight. Then, tare the balance and slowly add alcohol-free agarwood essential oil perfume to the center of the scent paper until the electronic balance reads 0.5±0.05g. Record this as the initial perfume weight.

[0095] After 24 hours, weigh the scent paper again using an electronic balance. Subtract the weight of the scent paper from the obtained mass reading to get the remaining perfume weight.

[0096] Experiment 3 1 ml of the alcohol-free agarwood essential oil perfume from each example and comparative example was sprayed onto the inner forearm skin of the reviewer (ensuring no skincare products were used and the inner forearm was clean before spraying). After one minute of even application, the smoothness of the skin was evaluated based on personal touch. The evaluation criteria were: ① Skin smoothness: 0-10 points, where 0 points indicates an unacceptable stickiness, and 10 points indicates a very smooth and comfortable feel.

[0097] There were 10 reviewers in total, and the scores were averaged.

[0098] Experiment 4 The irritation scores (IS) of the ethanol-free agarwood essential oil perfumes in each example and comparative example were tested according to SNT 2329-2009, "Eye Irritation / Corrosivity of Cosmetics - Chicken Embryo Villi Allantoic Membrane Test".

[0099] IS < 1: Non-irritating.

[0100] 1 ≤ IS < 5: Mild irritation.

[0101] 5 ≤ IS < 9: Moderate irritation.

[0102] IS≥10: Strong irritant / corrosive.

[0103] The detailed experimental data for Experiments 1-4 are shown in Table 1.

[0104] Table 1

[0105] Based on the data comparison of the various embodiments and comparative examples in Table 1, it can be seen that the perfumes of each embodiment are less prone to turbidity, and the agarwood essential oil is more stable in dissolving in water, thus better maintaining a clear state.

[0106] The fragrance retention effect of each embodiment is better than that of the comparative example, which shows that the fragrance retention effect is further improved due to the higher solubility stability of each embodiment.

[0107] The skin feel scores for each embodiment are proportional, showing that each embodiment provides a more refreshing and comfortable feel after use, better meeting consumer needs.

[0108] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An ethanol-free agarwood essential oil perfume, characterized in that: The components include the following parts by mass: 7-12 parts of oil-soluble agarwood extract; 12-20 parts of composite solubilizer; 5-8 parts of compound solubilizing agent; Long-lasting fragrance agent 3-6 parts; 45-65 parts deionized water; The composite solubilizer is a combination of isomeric tridecyl alcohol ether, hydrogenated castor oil polyoxyethylene ether, and C12-18 alkyl glucoside. The composite solubilizing agent is a mixture of polyethylene glycol-8, polyethylene glycol-300, and dipropylene glycol.

2. The ethanol-free agarwood essential oil perfume according to claim 1, characterized in that: In the composite solubilizer, the mass ratio of isomeric tridecyl alcohol ether, hydrogenated castor oil polyoxyethylene ether, and C12-18 alkyl glucoside is 5-7:6-8:7-9.

3. The ethanol-free agarwood essential oil perfume according to claim 2, characterized in that: In the composite solubilizing agent, the mass ratio of polyethylene glycol-8, polyethylene glycol-300, and dipropylene glycol is 3-4:1-2:5-6.

4. An ethanol-free agarwood essential oil perfume according to any one of claims 1-3, characterized in that: The long-lasting fragrance agent is one or more of the following: hydroxyethyl cellulose, sodium carboxymethyl cellulose, xanthan gum, carrageenan, gum arabic, pectin, chitosan, poloxamer, polyvinyl alcohol, polyvinylpyrrolidone, and carbomer.

5. The ethanol-free agarwood essential oil perfume according to claim 4, characterized in that: The long-lasting fragrance agent is a compound of polyvinylpyrrolidone K30 and carbomer 941.

6. The ethanol-free agarwood essential oil perfume according to claim 5, characterized in that: In the long-lasting fragrance agent, the mass ratio of polyvinylpyrrolidone K30 to carbomer 941 is 3-4:3-4.

7. A method for preparing an ethanol-free agarwood essential oil perfume according to any one of claims 1-6, characterized in that: Includes the following steps: Step 1), mix the long-lasting fragrance agent and deionized water evenly to obtain the aqueous phase; Step 2), mix the oil-soluble agarwood extract, compound solubilizer, and compound solubilizing agent evenly to obtain the oil phase; Step 3): While keeping the aqueous phase stirred, add the oil phase to the aqueous phase and mix well to obtain an ethanol-free agarwood essential oil perfume.

8. The method for preparing an ethanol-free agarwood essential oil perfume according to claim 7, characterized in that: In step 1), after mixing the long-lasting fragrance agent and deionized water, the pH is adjusted to 6.0-7.0.

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