Bright and smooth fragrance bath oil and preparation method thereof
By combining surfactants and skin conditioners, the problem of achieving both cleansing and nourishment in bath oils is solved, resulting in gentle cleansing and deep moisturizing, thus improving skin health.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN XINGKUO BIOTECHNOLOGY CO LTD
- Filing Date
- 2026-03-17
- Publication Date
- 2026-05-12
AI Technical Summary
Existing bath oils struggle to balance cleansing and nourishing, resulting in a poor user experience. Furthermore, traditional cleansing products can easily over-degrease and damage the skin barrier.
It uses a surfactant combination of C14-16 olefin sulfonate sodium, cocamidopropyl betaine, decyl glucoside, lauryl betaine, sodium lauroyl methyl aminopropionate and PEG-40 hydrogenated castor oil, combined with chelating agents, moisturizers, thickeners, antioxidants, fragrances and skin conditioning agents to form a gentle and delicate emulsion system that deeply moisturizes the skin and replenishes the skin barrier lipids.
It achieves the dual effects of cleansing and moisturizing, avoiding excessive degreasing, deeply moisturizing dry skin, keeping skin hydrated and smooth, and improving skin health.
Smart Images
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Abstract
Description
Technical Field
[0001] This invention belongs to the field of cosmetic technology, specifically relating to a moisturizing and fragrant bath oil and its preparation method. Background Technology
[0002] With the improvement of residents' living standards and the upgrading of personal care concepts, bath products have developed from a single cleaning function to a diversified direction such as cleaning, nourishing, and comfort. As a high-end care product that combines skin care and fragrance, bath oil has gradually become a popular category in the personal care market due to its gentle cleansing, deep nourishing and long-lasting fragrance. It is widely favored by consumers of different age groups, and market demand continues to rise.
[0003] CN112494369A discloses a bath oil and its preparation method. The bath oil comprises the following components by weight percentage: 35-55% plant oil, 20-40% detergent, 0.1-1.0% antioxidant, and 20-40% emulsifier. The preparation method includes the following steps: weighing each component according to the formula, mixing the remaining components except for the detergent, and then adding the detergent to mix further to obtain the bath oil. The bath oil is refreshing, easy to rinse, gentle, and non-irritating, providing a pleasant washing experience; it effectively moisturizes and nourishes the skin while providing good cleansing.
[0004] CN110200858A discloses a bath oil and its preparation method, the main components of which are: 7% olive fruit oil, 6% macadamia seed oil, 5% jojoba seed oil, 6% camellia seed oil, 6% geranium oil, 5% sunflower seed oil, 7% argan oil, 0.5% tocopherol, 11% sorbitol polyether-30 tetraoleate, 0.3% phenoxyethanol, 46% ethyl isopalmitoate, and 0.2% fragrance. This invention discloses a bath oil and its preparation method that uses a combination of multiple ingredients with different effects and different evaporation rates to fully utilize their respective effects and produce a synergistic effect. By using multiple herbal ingredients without side effects, it can not only prevent some skin diseases, but also moisturize, whiten, and delay skin aging while cleansing the skin, without causing itching; thus, this invention has the characteristics of being non-irritating to the skin, having a long moisturizing time, good skin moisturizing effect, and being able to prevent some diseases.
[0005] Currently, existing bath oils are mainly made with oil as a base, with added emulsifiers and a small amount of skin care ingredients. Their core principle is to use the "oil dissolves oil" property to cleanse the skin while nourishing it through the oil components. However, there are still problems such as difficulty in achieving both cleansing and nourishing effects and poor user experience. Therefore, developing a product that can solve the above-mentioned technical defects, achieve long-lasting cleansing and nourishing effects, and has a stable, safe and gentle formula has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention
[0006] To address the shortcomings of existing technologies, this invention provides a moisturizing and fragrant bath oil and its preparation method. The bath oil of this invention is suitable for daily use on various skin types, including dry and sensitive skin. It cleanses while providing basic moisturizing care, achieving a "wash and care in one" solution, simplifying skincare steps, and keeping skin hydrated, soft, and healthy after bathing.
[0007] To achieve this objective, the present invention adopts the following technical solution: In a first aspect, the present invention provides a moisturizing and fragrant bath oil, wherein the moisturizing and fragrant bath oil comprises, by weight, 0.05-0.5 parts of chelating agent, 10-20 parts of moisturizer, 15-25 parts of surfactant, 0.1-1 parts of thickener, 0.1-1 parts of antioxidant, 0.1-2 parts of fragrance, 0.1-5 parts of skin conditioning agent and 50-75 parts of water; The surfactant is a combination of sodium C14-16 olefin sulfonate, cocamidopropyl betaine, decyl glucoside, lauryl betaine, sodium lauroyl methyl aminopropionate, and PEG-40 hydrogenated castor oil.
[0008] The bath oil described in this invention has both cleansing and moisturizing / repairing effects. Upon contact with water, it quickly emulsifies to form a fine system, gently dissolving oil and dirt on the skin's surface. This avoids the problem of excessive degreasing by traditional cleansing products, protecting the skin's lipid barrier. Simultaneously, it deeply moisturizes dry skin, replenishes skin barrier lipids, and alleviates roughness, dryness, and itchiness. After washing, the skin remains hydrated, smooth, and without any tightness or dryness.
[0009] Sodium C14-16 olefin sulfonate serves as the main cleansing component, providing basic oil and dirt removal capabilities. Upon contact with water, it quickly emulsifies the oil phase and dissolves oil-soluble dirt on the skin surface. Sodium lauroyl methylaminopropionate combines anionic cleansing with the skin-friendly properties of a weak amide, offering gentle cleansing with minimal skin irritation. After washing, it forms a thin, hydrophilic film on the skin surface, reducing moisture loss and enhancing skin smoothness. Cocamidopropyl betaine exhibits excellent foaming properties, producing dense and long-lasting foam that is compatible with all anionic / alcoholic compounds. The nonionic components are compatible, reducing the product's penetration and irritation to the skin's stratum corneum. The combination of lauryl betaine and cocamidopropyl betaine creates a dense, easily rinsed foam texture, avoiding the greasy feeling of residual foam after washing. Decyl glucoside combines mild cleansing power with excellent emollient properties, forming a breathable hydrophobic protective film on the skin surface, replenishing the skin barrier's lipid components, reducing moisture loss after cleansing, and is resistant to hard water and readily biodegradable, meeting the needs of gentle skincare. The PEG-40 hydrogenated castor oil adjusts the system's HLB value, allowing for better compatibility between the oil phase components and hydrophilic surfactants and the aqueous phase, preventing separation during storage and uneven emulsification during use. The six components work synergistically, enabling the bath oil to achieve a multi-effect fusion of cleansing, foaming, moisturizing, repairing, and stabilizing, thus achieving continuous skincare effects by cleansing without damaging the skin barrier and leaving residual components to repair it after washing.
[0010] The amount of chelating agent added in the moisturizing fragrance bath oil of the present invention can be 0.06 parts, 0.08 parts, 0.1 parts, 0.15 parts, 0.2 parts, 0.25 parts, 0.3 parts, 0.35 parts, 0.4 parts, or 0.45 parts, etc.; The amount of the humectant added can be 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, or 19 parts, etc. The amount of surfactant added can be 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, or 24 parts, etc. The amount of the thickener added can be 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, or 0.9 parts, etc.; The amount of antioxidant added can be 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, or 0.9 parts, etc.; The amount of the fragrance added can be 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, or 1.9 parts, etc.; The amount of the skin conditioning agent added can be 0.3 parts, 0.5 parts, 0.8 parts, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts or 4.5 parts, etc.; The amount of water added can be 52 parts, 55 parts, 58 parts, 60 parts, 62 parts, 65 parts, 68 parts, 70 parts, 72 parts, or 74 parts, etc.
[0011] Preferably, the mass ratio of sodium C14-16 olefin sulfonate, cocamidopropyl betaine, decyl glucoside, lauryl betaine, sodium lauroyl methyl aminopropionate and PEG-40 hydrogenated castor oil is (8-12): (2-6): (1-3): (0.1-1): (0.1-1): (0.01-0.5).
[0012] Among them, "8-12" can be 8.2, 8.5, 8.8, 9, 9.2, 9.5, 98, 10, 10.2, 10.5, 10.8, 11, 11.2, 11.5 or 11.8, etc.; "2-6" can be 2.2, 2.5, 2.8, 3, 3.2, 3.5, 3.8, 4, 4.2, 4.5, 4.8, 5, 5.2, 5.5, or 5.8, etc. "1-3" can be 1.1, 1.3, 1.5, 1.7, 1.9, 2, 2.2, 2.5, 2.7 or 2.9, etc.; The first "0.1-1" can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, or 0.9, etc.; The second "0.1-1" can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, or 0.9, etc.; "0.01-0.5" can be 0.03, 0.05, 0.08, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4 or 0.45, etc.
[0013] Preferably, the moisturizer comprises any one or a combination of at least two of glycerin, 1,2-hexanediol, or sodium hyaluronate.
[0014] Preferably, the thickener comprises PEG-150 pentaerythritol tetrastearate.
[0015] Preferably, the chelating agent comprises disodium EDTA.
[0016] Preferably, the antioxidant includes p-hydroxyacetophenone and / or tocopherol.
[0017] Preferably, the fragrance agent includes a flavoring.
[0018] Preferably, the skin conditioning agent comprises any one or a combination of at least two of the following: polyquaternium-47, PEG-60 almond glycerides, trehalose, soapberry extract, olive oil PEG-7 esters, sodium polyaspartate, glycolipids, sugar isomers, complex polysaccharides, palm kernel oleamide, camellia seed oil, Ganoderma lucidum extract, or Lactobacillus fermentation products.
[0019] Preferably, the skin conditioning agent is a combination of Sapindus mukorossi extract, Camellia seed oil, Ganoderma lucidum extract, and Lactobacillus fermentation product.
[0020] The skin conditioning agent of this invention uses soapberry extract, camellia seed oil, Ganoderma lucidum extract and lactobacillus fermentation product in combination, which can form a synergistic effect in terms of cleansing, moisturizing and lipid replenishment. It can deeply replenish the lipids missing in the skin barrier, lock in moisture for a long time, and relieve skin dryness, roughness and peeling. It can precisely achieve the dual effect of moisturizing and barrier repair.
[0021] Preferably, the components of the moisturizing fragrance bath oil also include colorants and / or pH adjusters.
[0022] Preferably, the components of the moisturizing fragrance bath oil further include 0.01-1 parts by weight of colorant (e.g., 0.03 parts, 0.05 parts, 0.08 parts, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, or 0.9 parts, etc.) and 0.01-1 parts by weight of pH adjuster (e.g., 0.03 parts, 0.05 parts, 0.08 parts, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, or 0.9 parts, etc.).
[0023] Preferably, the colorant includes CI14700 and / or CI19140; Preferably, the pH adjuster includes citric acid and / or sodium citrate.
[0024] Preferably, the components of the moisturizing fragrance bath oil also include collagen and / or moisturizing oils.
[0025] Preferably, the components of the moisturizing fragrance bath oil further include 0.1-1 parts of collagen (e.g., 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, or 0.9 parts, etc.) and 0.1-1 parts of moisturizing oil (e.g., 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, or 0.9 parts, etc.) by weight.
[0026] Preferably, the collagen includes any one or a combination of at least two of recombinant human type III collagen, recombinant human type IV collagen, or recombinant human type XVII collagen.
[0027] Preferably, the collagen comprises a combination of recombinant human type III collagen and recombinant human type XVII collagen.
[0028] Preferably, the vegetable oil includes any one or a combination of at least two of sweet almond oil, sunflower seed oil, or meadowfoam seed oil.
[0029] Preferably, the vegetable oil is a combination of sweet almond oil, sunflower seed oil, and meadowfoam seed oil.
[0030] As a preferred technical solution of the present invention, the sweet almond oil can deeply nourish and soften the skin; the sunflower seed oil has the effect of moisturizing and strengthening the skin barrier; and the meadowfoam seed oil has the effect of long-lasting water locking and ultimate moisturizing. The three work together to form a thin and breathable protective film on the skin after the bath oil is used, directly replenishing lipids and further enhancing its effect of nourishing while washing.
[0031] All the specific point values within the above range can be selected, and will not be elaborated on here.
[0032] In a second aspect, the present invention provides a method for preparing the moisturizing and fragrant bath oil as described in the first aspect, the method comprising: (1) Heat the water, then add humectant, thickener and antioxidant, and homogenize to obtain an aqueous phase liquid; The chelating agent, skin conditioning agent and surfactant were heated and homogenized to obtain an oil phase liquid; (2) Mix the aqueous phase and the oil phase homogenize, cool down and add fragrance, stir evenly to obtain the moisturizing fragrance bath oil.
[0033] Preferably, in step (1), the aqueous phase liquid is prepared at a temperature of 80-85°C (e.g., 81°C, 82°C, 83°C, or 84°C), and the homogenization is carried out by stirring at a speed of 10-50 rpm (e.g., 15 rpm, 20 rpm, 25 rpm, 30 rpm, 35 rpm, 40 rpm, or 45 rpm) for a time of 5-30 min (e.g., 10 min, 15 min, 20 min, or 25 min).
[0034] Preferably, in step (1), the oil phase liquid is heated to 80-85℃ (e.g., 81℃, 82℃, 83℃ or 84℃, etc.), and the homogenization is carried out by stirring. The stirring speed is 10-50 rpm (e.g., 15 rpm, 20 rpm, 25 rpm, 30 rpm, 35 rpm, 40 rpm or 45 rpm, etc.), and the time is 5-30 min (e.g., 10 min, 15 min, 20 min or 25 min, etc.).
[0035] Preferably, the preparation of the oil phase liquid in step (1) further includes the addition of moisturizing oils; Preferably, the temperature reduction to 40-50°C in step (2) can be, for example, 41°C, 43°C, 45°C, 47°C or 49°C.
[0036] Preferably, step (2) after cooling further includes adding any one or a combination of at least two of collagen, colorant, or pH adjuster.
[0037] All the specific point values within the above range can be selected, and will not be elaborated on here.
[0038] Compared with the prior art, the present invention has the following beneficial effects: The bath oil described in this invention not only has a long-lasting fragrance but also combines cleansing and moisturizing repair. Upon contact with water, it quickly emulsifies to form a fine system, gently dissolving oil and dirt on the skin's surface, avoiding the excessive degreasing issues of traditional cleansing products, and protecting the skin's lipid barrier. Simultaneously, it deeply moisturizes dry skin, replenishes skin barrier lipids, and alleviates roughness, dryness, and itchiness, leaving skin hydrated, smooth, and without tightness or dryness after washing. Detailed Implementation
[0039] The technical solution of the present invention will be further illustrated below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of the present invention and should not be construed as limiting the invention in any way.
[0040] The weight parts mentioned in the following examples and comparative examples are based on the actual active ingredients contained in commercially available raw materials. These commercially available raw materials may also selectively contain any one or a combination of at least two of the following: solvents, fillers, diluents, stabilizers, pH adjusters, antibacterial agents, antioxidants, or impurities within permissible limits.
[0041] The sources of some of the raw materials used in the embodiments or comparative examples of this invention are shown in the table below: All other raw materials can be used as long as they are purchased from authorized distributors.
[0042] Examples 1-3 The embodiments provide three types of moisturizing and fragrant bath oils, the components of which are shown in the table below. The preparation method of the moisturizing and fragrant bath oil in Example 1 is as follows: (1) Heat the water to 83°C, then add humectant, thickener and antioxidant, and homogenize at 35 rpm for 15 min to obtain an aqueous phase liquid; The chelating agent, skin conditioning agent, moisturizing oil and surfactant were heated to 83°C and homogenized at 35 rpm for 20 min to obtain an oil phase liquid; (2) Mix the aqueous phase and the oil phase homogenize, cool to 45°C, add collagen, fragrance and pH adjuster, stir evenly to obtain the moisturizing fragrance bath oil.
[0043] The preparation methods for the products of Examples 2 and 3 are the same as those described above.
[0044] Example 4 This embodiment provides a moisturizing and fragrant bath oil. The only difference between the moisturizing and fragrant bath oil and that of Embodiment 1 is that the oil does not contain moisturizing oils. The reduction in oil content is made up by the proportion of each component of the skin conditioning agent. The remaining components and dosages are the same as those of Embodiment 1, and the preparation method is the same as that of Embodiment 1.
[0045] Example 5 This embodiment provides a moisturizing and fragrant bath oil. The only difference between the moisturizing and fragrant bath oil and that of Embodiment 1 is that the sweet almond oil is not included in the composition. The reduced amount is made up by sunflower seed oil and meadowfoam seed oil in proportion. The remaining components and amounts are the same as those of Embodiment 1, and the preparation method is the same as that of Embodiment 1.
[0046] Example 6 This embodiment provides a moisturizing and fragrant bath oil. The only difference between the moisturizing and fragrant bath oil and that of Example 1 is that sunflower seed oil is not included in the composition. The reduced amount is made up by sweet almond oil and meadowfoam seed oil in proportion. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.
[0047] Example 7 This embodiment provides a moisturizing and fragrant bath oil. The only difference between the moisturizing and fragrant bath oil and that of Example 1 is that it does not contain meadowfoam seed oil. The reduction is made up by sweet almond oil and sunflower seed oil in proportion. The remaining components and amounts are the same as those of Example 1, and the preparation method is the same as that of Example 1.
[0048] Example 8 This embodiment provides a moisturizing and fragrant bath oil. The only difference between the moisturizing and fragrant bath oil and that of Embodiment 1 is that there is no collagen in the components. The reduction is made up by the proportion of each component of the moisturizing oil. The other components and amounts are the same as those of Embodiment 1. The preparation method is the same as that of Embodiment 1.
[0049] Example 9 This embodiment provides a moisturizing and fragrant bath oil. The only difference between the moisturizing and fragrant bath oil and that of Example 1 is that the components do not contain recombinant human type III collagen. The reduction is made up by recombinant human type XVII collagen. The other components and amounts are the same as those of Example 1, and the preparation method is the same as that of Example 1.
[0050] Example 10 This embodiment provides a moisturizing and fragrant bath oil. The only difference between the moisturizing and fragrant bath oil and that of Example 1 is that the components do not contain recombinant human type XVII collagen. The reduction is made up by recombinant human type III collagen. The remaining components and amounts are the same as those of Example 1, and the preparation method is the same as that of Example 1.
[0051] Example 11 This embodiment provides a moisturizing and fragrant bath oil. The only difference between the moisturizing and fragrant bath oil and that of Example 1 is that the Sapindus mukorossi extract is not included in the composition. The reduced amount is made up by camellia seed oil, Ganoderma lucidum extract and Lactobacillus fermentation product in proportion. The remaining components and amounts are the same as those of Example 1, and the preparation method is the same as that of Example 1.
[0052] Example 12 This embodiment provides a moisturizing and fragrant bath oil. The only difference between the moisturizing and fragrant bath oil and that of Example 1 is that camellia seed oil is not included in the composition. The reduced amount is made up by Sapindus mukorossi extract, Ganoderma lucidum extract and Lactobacillus fermentation product in proportion. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.
[0053] Example 13 This embodiment provides a moisturizing and fragrant bath oil. The only difference between the moisturizing and fragrant bath oil and that of Example 1 is that the Ganoderma lucidum extract is not included in the composition. The reduced amount is made up by Sapindus mukorossi extract, Camellia seed oil and Lactobacillus fermentation product in proportion. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.
[0054] Example 14 This embodiment provides a moisturizing and fragrant bath oil. The only difference between the moisturizing and fragrant bath oil and that of Example 1 is that the components do not contain lactobacillus fermentation products. The reduction is made up by Sapindus mukorossi extract, Camellia seed oil and Ganoderma lucidum extract in proportion. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.
[0055] Comparative Example 1 This comparative example provides a moisturizing and fragrant bath oil. The only difference between this moisturizing and fragrant bath oil and Example 1 is that it does not include sodium C14-16 olefin sulfonate. The reduction in its amount is made up by cocamidopropyl betaine, decyl glucoside, lauryl betaine, sodium lauroyl methyl aminopropionate, and PEG-40 hydrogenated castor oil in proportion to the amount of each component. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.
[0056] Comparative Example 2 This comparative example provides a moisturizing and fragrant bath oil. The only difference between this moisturizing and fragrant bath oil and Example 1 is that it does not include cocamidopropyl betaine in its components. The reduction in its amount is made up by decyl glucoside, lauryl betaine, sodium lauroyl methyl aminopropionate and PEG-40 hydrogenated castor oil in proportion to the parts. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.
[0057] Comparative Example 3 This comparative example provides a moisturizing and fragrant bath oil. The difference between the moisturizing and fragrant bath oil and Example 1 is that the decyl glucoside is not included in the composition. The reduction is made up by cocamidopropyl betaine, lauryl betaine, sodium lauroyl methyl aminopropionate and PEG-40 hydrogenated castor oil in proportion. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.
[0058] Comparative Example 4 This comparative example provides a moisturizing and fragrant bath oil. The only difference between this moisturizing and fragrant bath oil and Example 1 is that it does not contain lauryl betaine. The reduction in lauryl betaine is made up by cocamidopropyl betaine, decyl glucoside, sodium lauroyl methyl aminopropionate and PEG-40 hydrogenated castor oil in proportion to the amount of each component. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.
[0059] Comparative Example 5 This comparative example provides a moisturizing and fragrant bath oil. The only difference between this moisturizing and fragrant bath oil and Example 1 is that it does not include sodium lauroyl methyl aminopropionate in its components. The reduction in sodium lauroyl methyl aminopropionate is made up by cocamidopropyl betaine, decyl glucoside, lauroyl betaine and PEG-40 hydrogenated castor oil in proportion to the number of parts. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.
[0060] Comparative Example 6 This comparative example provides a moisturizing and fragrant bath oil. The difference between the moisturizing and fragrant bath oil and Example 1 is that the components do not include PEG-40 hydrogenated castor oil. The reduction in amount is made up by cocamidopropyl betaine, decyl glucoside, lauryl betaine and sodium lauroyl methyl aminopropionate in proportion to the parts. The remaining components and amounts are the same as in Example 1, and the preparation method is the same as in Example 1.
[0061] Test Example 1 The products prepared in Examples 1-14 and Comparative Examples 1-6 were evaluated for their long-lasting moisturizing and skin-firming effects: One hundred participants aged 20-45 were randomly selected and divided into 20 groups of 5. The 20 groups of participants used the products prepared in Examples 1-14 and Examples 1-6, respectively, once every night in the same amount, for 30 days, during which time no other skin care products were used.
[0062] Skin hydration was measured using a Corneometer CM825 on days 0 and 30 to assess the skin hydration before and after lotion application. Measurements were taken three times on the same area, and the average value was recorded. Results are shown in Table 1.
[0063] Skin condition was tested on day 0 and day 30 using a Cutometer MPA580 skin elastometer. The test site was the cheekbone area. Measurements were taken three times on the same area, and the average value was recorded. The test parameter was R² (the ratio of skin rebound Ua without negative pressure to the maximum stretch Uf under negative pressure). The closer R² is to 1, the better the skin elasticity. The average change in R² = R² value on day 30 - R² value on day 0, and the average rate of change in R² = average change in R² / R² value on day 0. The specific skin elasticity test results are shown in Table 1.
[0064] Table 1 The results showed that the bath oil involved in this invention has good long-lasting moisturizing and skin-firming effects. The soapberry extract, camellia seed oil, Ganoderma lucidum extract, and Lactobacillus fermentation product mutually promote these effects. The selection of collagen and moisturizing oil components also showed an unexpected synergistic effect in moisturizing and firming. Furthermore, the formulation of surfactants also has a significant impact on the product's moisturizing properties.
[0065] Test Example 2 The grease removal rate of the samples obtained in Examples 1-3 and Comparative Examples 1-6 was tested. Seventy-two male volunteers were selected, including 36 with dry skin (randomly divided into 9 groups of 4 each) and 36 with oily skin (randomly divided into 9 groups of 4 each). A fixed area on the back of each subject was used as the test area. The oil content of each subject's skin before use and after cleansing the skin with the same amount of each group of samples for the same period of time were measured using the CBS skin analysis system in an environment of 25°C. The oil removal rate was calculated according to the following formula and the arithmetic mean was obtained to examine the cleansing effect of the product on oily and dry skin. The test results are shown in Table 2. Table 2 The results showed that, in Examples 1-3, data from subjects with dry skin indicated that the product involved in this invention does not excessively remove facial oil and has virtually no harm to the skin; data from subjects with oily skin indicated that the product involved in this invention has a good oil-removing effect; and, as shown in Comparative Examples 1-6, it can be seen that the six components—sodium C14-16 olefin sulfonate, cocamidopropyl betaine, decyl glucoside, lauryl betaine, sodium lauroyl methyl aminopropionate, and PEG-40 hydrogenated castor oil—have a synergistic effect in removing oil.
[0066] Test Example 3: Safety Evaluation Experiment Safety assessment: The specific method was as follows: Forty volunteers aged 20-35 years (half male and half female) with no history of allergies were selected. Each subject used the samples prepared in Examples 1-3. After cleaning the subject's arm, the patch applicator containing the sample was applied to the selected location on the arm using non-irritating adhesive tape. After application, the patch was gently pressed with the fingers to ensure even application to the skin, and left for 24 hours. During these 24 hours, the subject kept the patch area dry and avoided strenuous exercise, scratching, and prolonged sun exposure. After 24 hours, the applicator was removed and marked. After 30 minutes, once the pressure marks disappeared, the applicator was evaluated under sufficient light.
[0067] The grading criteria for adverse skin reactions are shown in Table 3: Table 3 The results are shown in Table 4: Table 4 As shown in Table 4, all subjects had negative reactions, indicating that the product prepared according to the present invention has no adverse reactions on the human body and is highly safe.
[0068] The applicant declares that this invention illustrates a moisturizing fragrance bath oil and its preparation method through the above embodiments, but this invention is not limited to the above embodiments, that is, it does not mean that this invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvements to this invention, equivalent substitutions of the raw materials of this invention, addition of auxiliary components, and selection of specific methods, etc., all fall within the protection scope and disclosure scope of this invention.
[0069] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.
[0070] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.
Claims
1. A moisturizing and fragrant bath oil, characterized in that, The moisturizing and fragrant bath oil, by weight, comprises 0.05-0.5 parts of chelating agent, 10-20 parts of moisturizer, 15-25 parts of surfactant, 0.1-1 parts of thickener, 0.1-1 parts of antioxidant, 0.1-2 parts of fragrance, 0.1-5 parts of skin conditioning agent, and 50-75 parts of water. The surfactant is a combination of sodium C14-16 olefin sulfonate, cocamidopropyl betaine, decyl glucoside, lauryl betaine, sodium lauroyl methyl aminopropionate, and PEG-40 hydrogenated castor oil.
2. The moisturizing and fragrant bath oil as described in claim 1, characterized in that, The mass ratio of sodium C14-16 olefin sulfonate, cocamidopropyl betaine, decyl glucoside, lauryl betaine, sodium lauroyl methyl aminopropionate and PEG-40 hydrogenated castor oil is (8-12): (2-6): (1-3): (0.1-1): (0.1-1): (0.01-0.5).
3. The moisturizing and fragrant bath oil as described in claim 1 or 2, characterized in that, The moisturizer includes any one or a combination of at least two of glycerin, 1,2-hexanediol or sodium hyaluronate. Preferably, the thickener comprises PEG-150 pentaerythritol tetrastearate; Preferably, the chelating agent comprises disodium EDTA.
4. The moisturizing and fragrant bath oil according to any one of claims 1-3, characterized in that, The antioxidants include p-hydroxyacetophenone and / or tocopherol; Preferably, the fragrance agent includes a flavoring. Preferably, the skin conditioning agent comprises any one or a combination of at least two of the following: polyquaternium-47, PEG-60 almond glycerides, trehalose, soapberry extract, olive oil PEG-7 esters, sodium polyaspartate, glycolipids, sugar isomers, complex polysaccharides, palm kernel oleamide, camellia seed oil, Ganoderma lucidum extract, or Lactobacillus fermentation products.
5. The moisturizing and fragrant bath oil as described in claim 4, characterized in that, The skin conditioning agent is a combination of Sapindus mukorossi extract, Camellia seed oil, Ganoderma lucidum extract, and Lactobacillus fermentation product.
6. The moisturizing and fragrant bath oil according to any one of claims 1-5, characterized in that, The components of the moisturizing and fragrant bath oil also include colorants and / or pH adjusters; Preferably, the components of the moisturizing fragrance bath oil further include 0.01-1 parts of colorant and 0.01-1 parts of pH adjuster by weight; Preferably, the colorant includes CI14700 and / or CI19140; Preferably, the pH adjuster includes citric acid and / or sodium citrate.
7. The moisturizing and fragrant bath oil as described in claim 6, characterized in that, The components of the moisturizing and fragrant bath oil also include collagen and / or moisturizing oils; Preferably, the components of the moisturizing fragrance bath oil further include 0.1-1 parts of collagen and 0.1-1 parts of moisturizing oil by weight; Preferably, the collagen includes any one or a combination of at least two of recombinant human type III collagen, recombinant human type IV collagen, or recombinant human type XVII collagen; Preferably, the collagen comprises a combination of recombinant human type III collagen and recombinant human type XVII collagen.
8. The moisturizing and fragrant bath oil as described in claim 7, characterized in that, The vegetable oils include any one or a combination of at least two of sweet almond oil, sunflower seed oil, or meadowfoam seed oil. Preferably, the vegetable oil is a combination of sweet almond oil, sunflower seed oil, and meadowfoam seed oil.
9. A method for preparing a moisturizing and fragrant bath oil as described in any one of claims 1-8, characterized in that, The preparation method includes: (1) Heat the water, then add humectant, thickener and antioxidant, and homogenize to obtain an aqueous phase liquid; The chelating agent, skin conditioning agent and surfactant were heated and homogenized to obtain an oil phase liquid; (2) Mix the aqueous phase and the oil phase homogenize, cool down and add fragrance, stir evenly to obtain the moisturizing fragrance bath oil.
10. The preparation method according to claim 9, characterized in that, In step (1), the aqueous phase liquid is prepared by heating to 80-85℃, and the homogenization is carried out by stirring. The stirring speed is 10-50 rpm and the time is 5-30 min. Preferably, in step (1), the oil phase liquid is heated to 80-85°C, and the homogenization is carried out by stirring, with a stirring speed of 10-50 rpm and a time of 5-30 min; Preferably, the preparation of the oil phase liquid in step (1) further includes the addition of moisturizing oils; Preferably, the temperature is reduced to 40-50℃ in step (2); Preferably, step (2) after cooling further includes adding any one or a combination of at least two of collagen, colorant, or pH adjuster.