Skin-refreshing cleansing oil formula and preparation method thereof

Abstract

The invention relates to the technical field of preparation of cleansing products, in particular to a formula and a preparation method of skin-refreshing cleansing oil, and the skin-refreshing cleansing oil is characterized in that fatty acid ester components and polyoxyethylene ether surfactants in a system are balanced by adjusting the proportion of cetyl alcohol ethyl hexanoate to PEG-8 diisostearate; after the proportion is adjusted, the dosage of sorbitol polyether-30 tetraoleate is increased to 7%, and the strength of an interfacial film is improved; and tocopherol is added as an antioxidant substance, so that the risk of emulsification collapse caused by oxidation stability is reduced. According to the skin-refreshing cleansing oil formula and the preparation method, the strength of an interfacial film is enhanced by increasing the dosage of sorbitol polyether-30 tetraoleate, oxidation is inhibited by adding tocopherol, the content of squalane is dynamically adjusted by combining the proportion of polar / non-polar components, emulsification collapse and layering are effectively avoided, and it is ensured that the product is kept in a stable state in the storage and use process.

Description

Technical Field

[0001] This application relates to the field of makeup remover preparation technology, and in particular to a skin-renewing makeup remover oil formula and preparation method. Background Technology

[0002] Skin-renewing cleansing oil is a cleansing product that combines highly effective makeup removal with skincare benefits. It breaks through the limitations of traditional cleansing oils that can only remove makeup. While thoroughly cleansing, it can also improve skin texture, brighten skin tone, and repair the skin barrier, achieving the dual effect of "makeup removal = skincare".

[0003] In practical industrial applications and usage scenarios, how to further improve the emulsification stability of this type of skin-renewing cleansing oil, optimize its gentle makeup removal performance to reduce the risk of skin irritation, and at the same time enhance the product's moisturizing and nourishing effects on the skin and its added skincare value, remains a key technical bottleneck that urgently needs to be solved in this field. Summary of the Invention

[0004] To address the problems mentioned in the background art, this application provides a skin-renewing makeup remover formula and its preparation method.

[0005] This application provides a skin-renewing cleansing oil formula, employing the following technical solution:

[0006] Includes the following components by weight percentage:

[0007] Cetyl ethylhexanoate: 40-60%;

[0008] Ethylhexyl palmitate: 10-25%;

[0009] Isohexadecane: 6-12%;

[0010] Sorbitol polyether-30 tetraoleate: 3-8%;

[0011] PEG-8 diisostearate: 3-6%;

[0012] PEG-20 glyceryl triisostearate: 1-5%;

[0013] Olive fruit oil: 0.01-1%;

[0014] Tocopherol (Vitamin E): 0.2-0.5%;

[0015] Squalane: 0.1-1%;

[0016] Jojoba seed oil: 0.01-0.8%;

[0017] Meadowfoam seed oil: 0.01-0.6%;

[0018] Orange peel oil: 0.1-0.3%;

[0019] Bisabolol: 0.1-0.5%;

[0020] Centella asiatica extract: 0.01-0.1%;

[0021] Magnolia flower oil: 0.005-0.01%.

[0022] Another technical problem to be solved by the present invention is to provide a method for preparing a skin-renewing makeup remover, comprising the following steps:

[0023] Preferably, the step of optimizing the component ratio to improve emulsion stability further includes:

[0024] By adjusting the ratio of cetyl ethylhexanoate to PEG-8 diisostearate, a balance is achieved between fatty acid ester components and polyoxyethylene ether surfactants in the system.

[0025] Based on this ratio adjustment, the amount of sorbitol polyether-30 tetraoleate was increased to 7% to improve the interfacial film strength.

[0026] The addition of tocopherol as an antioxidant reduces the risk of emulsion breakdown due to oxidative instability;

[0027] Based on the ratio of polar to non-polar components in the formulation, when the mass fraction of the polar component... Greater than the mass fraction of nonpolar components At the same time, the squalane content in the system is increased to ensure that the system has a stable emulsion structure;

[0028] if Then the dosage of squalane can be increased to 0.7-0.9%, of which This indicates the mass percentage of the polar component in the system. This indicates the mass percentage of nonpolar components in the system.

[0029] Preferably, the step based on surfactant synergistic effect further includes:

[0030] During the mixing process, the PEG-20 glycerol triisostearate is first dissolved in the oil phase;

[0031] Then add sorbitol polyether-30 tetraoleate in sequence and stir thoroughly until a uniform and transparent oil phase is formed;

[0032] Add the aqueous phase, emulsify gradually, and control the shear rate to keep it below 1500 rpm;

[0033] Based on the viscosity index after emulsification and emulsion stability ,like and Then increase the amount of PEG-8 diisostearate;

[0034] if and The amount of PEG-8 diisostearate was increased to 5-6%, of which It is the emulsified viscosity (mPa·s). It is the baseline value. It is an indicator of emulsion stability. It sets a threshold.

[0035] Preferably, the step of enhancing skin nourishment based on oil combination further includes:

[0036] In the oil phase, highly permeable vegetable oils such as olive fruit oil, squalane, and jojoba seed oil are preferred for blending.

[0037] Based on the skin's hydration needs, the proportion of each oil is controlled to ensure the overall permeability. Not less than 0.8 cm / s;

[0038] At the same time, essential oils such as orange peel oil and magnolia oil are added to enhance the skincare fragrance and soothe irritation.

[0039] based on Value and skin dialysis coefficient The correlation, if Then supplement with meadowfoam seed oil to improve overall moisturization;

[0040] if Add meadowfoam seed oil to 0.3-0.5%, where K represents the overall permeability coefficient (cm / s) of the components in the oil phase. It is the skin's hydration and dialysis coefficient.

[0041] Preferably, the step based on the anti-inflammatory synergistic mechanism of bisabolol and Centella asiatica extract further includes:

[0042] A two-layer emulsification process was used to premix bisabolol and centella asiatica extract in the oil phase;

[0043] Both should be kept highly soluble in water to achieve a synergistic anti-inflammatory effect.

[0044] Based on the mass fraction of bisabolol With Centella Asiatica extract content The proportions, if If necessary, the amount of bisabolol added should be reduced appropriately;

[0045] if ,but Reduced by less than 0.5%, of which This is the mass percentage of bisabolol. It represents the mass percentage of Centella Asiatica extract.

[0046] Preferably, the step of optimizing the emulsification process based on the matching of oils and additives further includes:

[0047] The viscosity change before emulsification was tested using a rotational viscometer;

[0048] Increase the ratio of PEG-8 diisostearate to isohexadecane and perform high-speed shear emulsification;

[0049] Magnolia flower oil was added to balance the volatile aroma and long-lasting fragrance;

[0050] Based on viscosity fluctuations With shear force If the relationship, Then reduce the shearing speed to 1000 rpm;

[0051] if ,but Reduce to below 1000 rpm, of which This indicates the viscosity change (Pa·s) during emulsification. Indicates the shearing speed (rpm).

[0052] Preferably, the step of optimizing formulation stability based on the synergistic regulation of temperature and time further includes:

[0053] The temperature was initially raised to 60℃ and maintained at that temperature for 30 minutes.

[0054] Then lower the temperature to 40°C and store at low temperature for at least 24 hours;

[0055] Monitor the accumulation rate of oil decomposition products in the system and extend the storage time as appropriate;

[0056] Based on ambient temperature With storage days D, if or If so, the storage time can be extended to more than 48 hours;

[0057] if or The time limit will be extended to 48 hours, of which It refers to the external ambient temperature (°C). It refers to the storage time.

[0058] Preferably, the batch consistency control step based on the formula further includes:

[0059] Weigh, calibrate, and record the main and auxiliary materials in each production batch;

[0060] Implement a unified mixing sequence and control equipment parameters;

[0061] Perform cleaning and verification procedures after each operation to prevent cross-contamination;

[0062] Based on the formula consistency coefficient If three times in a row If so, the metering system needs to be recalibrated;

[0063] If three times in a row Start calibration mode, where The quantitative value (range 0–1) represents the consistency of the formulation; the closer the value is to 1, the more stable it is.

[0064] Preferably, the step of adjusting based on product sensory attributes further includes:

[0065] The finished product is analyzed for color and flowability, and adjustments and improvements are made based on the user's visual and tactile experience.

[0066] Examine the effects of the formula on users' skin tone and sensitivity after use;

[0067] A comprehensive evaluation and adjustment of the product's aroma, oiliness, and cleaning residue was conducted.

[0068] Based on user satisfaction and product ratings ,like and If separated, the oil ratio will be optimized;

[0069] if and The adjustment range for the optimized oil ratio is as follows: ,in It is a percentage of user satisfaction. It's a rating.

[0070] In summary, this application includes at least one of the following beneficial technical effects:

[0071] 1. The formula and preparation method of this skin-renewing cleansing oil balance the interaction between fatty acid esters and polyoxyethylene ether surfactants by precisely adjusting the ratio of cetyl ethylhexanoate to PEG-8 diisostearate; it also strengthens the interfacial film by increasing the amount of sorbitol polyether-30 tetraoleate, adds tocopherol to inhibit oxidation, and dynamically adjusts the squalane content by combining the ratio of polar / non-polar ingredients to effectively avoid emulsion collapse and stratification, ensuring that the product remains stable during storage and use.

[0072] 2. This skin-renewing cleansing oil formula and preparation method rely on the anti-inflammatory synergistic mechanism of bisabolol and centella asiatica extract. It adopts a double-layer emulsification process to improve the solubility of the two, while strictly controlling the total amount to avoid side effects. It is combined with essential oils such as orange peel oil and magnolia oil to soothe irritation and reduce the risk of skin redness and stinging. It is also suitable for sensitive skin.

[0073] 3. The formula and preparation method of this skin-renewing makeup remover oil are made with carefully selected highly permeable plant oils (olive fruit oil, squalane, and jojoba seed oil) to ensure that the oil penetration coefficient is not less than 0.8cm / s, which can deeply nourish the skin. In order to meet the skin's hydration needs, it supplements meadowfoam seed oil and combines the antioxidant effect of tocopherol to thoroughly remove makeup while repairing the skin barrier and improving skin texture, achieving the dual effect of "makeup removal = skin care".

[0074] 4. The formula and preparation method of this skin-renewing makeup remover oil utilize a surfactant synergistic design. First, PEG-20 glyceryl triisostearate is dissolved in the oil phase, and then gradually emulsified while controlling the shear rate to ≤1500rpm. The amount of PEG-8 diisostearate is optimized to adjust the emulsion structure, ensuring that the product has both strong makeup removal power and easy rinsing properties, avoiding a greasy feeling after washing. Attached Figure Description

[0075] Figure 1 This is a flowchart of the formula and preparation method for a skin-renewing cleansing oil. Detailed Implementation

[0076] The embodiments of this application are described in detail below, and examples of the embodiments are shown in the accompanying drawings.

[0077] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] Reference Appendix Figure 1This invention describes a method for preparing a skin-renewing makeup remover oil. First, the raw materials are pretreated by accurately weighing them according to a specified mass percentage and then subjecting them to necessary physical or chemical treatments. For example, some natural plant oils may need to be filtered to remove impurities and ensure their purity. Then, in the mixing step, each component is added to a mixing tank and thoroughly mixed using a high-shear stirring device to ensure uniform dispersion of the components. Specifically, most of the oil phase matrix, such as cetyl ethylhexanoate, ethylhexyl palmitate, and isohexadecane, is added to a reaction vessel in proportion, and the temperature is raised to 50-60°C to completely melt the lipids. Subsequently, surfactants such as sorbitol polyether-30 tetraoleate, PEG-8 diisostearate, and PEG-20 glyceryl triisostearate are gradually introduced. The high-temperature environment enhances their compatibility with the oil phase and promotes the formation of an emulsion structure. In one embodiment, by slowly mixing all base oils and co-emulsifiers at a constant temperature, local aggregation can be effectively avoided, thereby improving the stability of the entire system.

[0079] The next step involves adding active ingredients, such as tocopherol, squalane, jojoba seed oil, meadowfoam seed oil, and sweet orange peel oil, to the mixed solution. These oils have excellent moisturizing and skin-care effects. Specifically, these liquid ingredients are added sequentially to the well-mixed system while maintaining continuous stirring. For example, in one instance, tocopherol is added first to ensure it dissolves evenly in the system, followed by the sequential addition of other oily ingredients while adjusting the stirring speed to ensure sufficient contact between ingredients of different properties. In addition, soothing and repairing ingredients such as bisabolol and centella asiatica extract are added to the formula to provide anti-inflammatory, moisturizing, and repairing functions. In one specific embodiment, these active ingredients are added gradually at a relatively low temperature (30-40°C) to avoid denaturation of heat-sensitive ingredients and to prevent separation caused by premature crystallization of the oil phase.

[0080] Finally, the product is filled and stored. After the prepared product is cooled to room temperature, it is filled into the appropriate containers as needed and sealed and stored in a cool, dry place. Throughout the entire preparation process, temperature, time, and stirring conditions are strictly controlled at each step to ensure that the final product has excellent stability and functionality. For example, in one embodiment, after the product is produced, it is tested by a quality inspection center for multiple indicators such as emulsification stability, cleansing power, and skin adaptability before it is approved for market release. This step not only enhances the commercial application value of the product but also provides users with a safer and more effective user experience.

[0081] This invention effectively improves the emulsification stability and gentleness of the cleansing oil by selecting a variety of high-quality oils and surfactants as core ingredients, while also endowing it with excellent moisturizing and skincare functions. For example, the selected coconut oil compounds combined with plant oils can reduce damage to the skin barrier, while the added natural antioxidants such as tocopherol enhance the product's long-term protective efficacy. In addition, the specific ratio of surfactants, combined with reasonable heating and cooling conditions, optimizes the overall stability of the emulsification system, making it more suitable for repeated use. By precisely controlling the concentration and combination of each component, a powerful yet residue-free cleansing effect is achieved, meeting the needs of modern consumers for efficient, healthy, and convenient cosmetics.

[0082] Next, the steps of the present invention based on component ratio optimization to improve emulsion stability are further described. By adjusting the ratio of cetyl ethylhexanoate to PEG-8 diisostearate, a balance is formed between the fatty acid ester components and polyoxyethylene ether surfactants in the system. This ratio adjustment helps to improve interfacial tension stability and reduce the risk of emulsion breakage due to interfacial instability. For example, in one embodiment, if the original formulation contains 45% cetyl ethylhexanoate and 5% PEG-8 diisostearate, it can be adjusted to 50% and 4.5% to better balance the effects of the two. Based on this ratio adjustment, the amount of sorbitol polyether-30 tetraoleate is increased to 5%-5.5% to improve the interfacial film strength, thereby enhancing the system's ability to resist external interference and reducing the risk of emulsion layer separation. Specifically, if the original formulation contains 4% sorbitol polyether-30 tetraoleate, it needs to be increased to 5.2% to achieve better stability.

[0083] Adding tocopherol as an antioxidant reduces the risk of emulsion collapse caused by oxidative instability. The addition of tocopherol can effectively neutralize free radicals and prevent the oxidative decomposition of oils, thereby protecting the stability of the emulsion system. For example, if the original tocopherol content in a formulation is 0.3%, it can be increased to 0.4% in this step to improve the anti-aging ability of the system.

[0084] Based on the ratio of polar to non-polar components in the formulation, when the mass fraction M of the polar component is greater than the mass fraction N of the non-polar component, the squalane content in the system is increased to ensure a stable emulsion structure. The formula is: if M>N, the squalane dosage can be increased to 0.7-0.9%, where M represents the mass percentage of the polar component in the system and N represents the mass percentage of the non-polar component in the system. This formula aims to achieve a more balanced emulsion state by dynamically adjusting the ratio of polar to non-polar components in the formulation. The optimal value is usually set when M and N are close to or slightly greater than each other to avoid excessive polarity leading to a fragile emulsion structure. For example, if M=20% and N=18%, the squalane dosage can be increased from 0.3% to 0.8% according to this rule.

[0085] Next, the steps of the present invention based on the synergistic effect of surfactants are described. Further, first, during the mixing process, the PEG-20 glyceryl triisostearate is first dissolved in the oil phase. This step ensures that the PEG-20 glyceryl triisostearate is fully dissolved in the oily components, which helps the stability of the subsequent emulsification process. For example, when preparing a skin-renewing makeup remover oil, 3-5% of PEG-20 glyceryl triisostearate is added to the base oil phase containing cetyl ethylhexanoate, ethylhexyl palmitate, etc., and it is completely dissolved by heating and stirring. Next, polysorbate 80 tetraoleate is added in sequence and stirred充分搅拌至形成均匀透明油相,该步骤有助于增加油相的亲水性,提升整体的乳化能力,例如,在一个实施例中,将山梨醇聚醚-30四油酸酯3-8%加入至已溶解的油相中,并在50℃恒温条件下持续搅拌15分钟,直至得到均一液体,随后,将水相加入,逐步乳化并控制剪切速率保持在1500rpm以内,这一措施防止过高的剪切力破坏乳状液结构,保证产品质量,例如,在具体操作中,将包含乳化剂与水的水相逐渐添加到油相中,同时用匀质机以1500rpm以下的速度进行均质,最后,基于乳化后的粘度指标V和乳状液稳定性S,若V>V0且S<S0,则提高PEG-8二异硬脂酸酯用量,公式中,V表示乳化后粘度(单位为mPa·s),其基准值V0范围通常为1500-2500mPa·s;S表示乳状液稳定性,其设定阈值S0多设定为60%-70%,当V超过基准值且S低于稳定阈值时,需将PEG-8二异硬脂酸酯提升至5-6%,这一调节旨在通过调整表面活性剂浓度优化乳状液结构,提高产品稳定性与使用性能,例如,当测得某批样品粘度为3000mPa·s,稳定性为55%,此时应根据公式的设定提高PEG-8二异硬脂酸酯含量以满足工艺要求。until a uniform and transparent oil phase is formed. This step helps to increase the hydrophilicity of the oil phase and improve the overall emulsification ability. For example, in one embodiment, 3-8% of polysorbate 80 tetraoleate is added to the dissolved oil phase, and it is continuously stirred at a constant temperature of 50 °C for 15 minutes until a homogeneous liquid is obtained. Subsequently, the aqueous phase is added, emulsified step by step and the shear rate is controlled to be within 1500 rpm. This measure prevents the emulsion structure from being damaged by excessive shear force and ensures the product quality. For example, in a specific operation, the aqueous phase containing the emulsifier and water is gradually added to the oil phase, and homogenized with a homogenizer at a speed of less than 1500 rpm. Finally, based on the viscosity index V and emulsion stability S after emulsification, if V > V0 and S < S0, the dosage of PEG-8 diisostearate is increased. In the formula, V represents the viscosity after emulsification (unit: mPa·s), and its reference value V0 generally ranges from 1500-2500 mPa·s; S represents the emulsion stability, and its set threshold S0 is mostly set at 60%-70%. When V exceeds the reference value and S is lower than the stability threshold, the PEG-8 diisostearate needs to be increased to 5-6%. This adjustment aims to optimize the emulsion structure by adjusting the surfactant concentration and improve the product stability and performance. For example, when the viscosity of a certain batch of samples is measured to be 3000 mPa·s and the stability is 55%, the content of PEG-8 diisostearate should be increased according to the formula setting to meet the process requirements.

[0086] Next, the steps of the present invention based on the combination of oils to enhance the skin nourishing effect are described. Further, high-permeability vegetable oils such as olive fruit oil, squalane and jojoba seed oil are preferentially used in the oil phase for matching to improve the binding force and absorption speed of the oil with the skin, thereby enhancing the penetration ability of skin nutrients. For example, in one embodiment, olive fruit oil, squalane and jojoba seed oil account for 0.5%, 0.3% and 0.4% respectively, jointly constituting the basic part of the oil to promote deep skin moisturization.

[0087] Based on the skin's hydration needs, the proportion of each oil is controlled to ensure that the overall permeability coefficient K is not less than 0.8 cm / s. This permeability coefficient represents the overall efficiency of the interaction between oil and skin, ensuring that effective substances are delivered to the subepidermal layer. The range of K value is 0.8 cm / s to 1.5 cm / s, with the optimal value set at 1.2 cm / s to achieve good transdermal penetration. For example, in a certain formula adjustment, the overall permeability coefficient K of the oil component was detected to be 0.9 cm / s, meeting the requirements and satisfying the conditions for effective skin care.

[0088] At the same time, essential oils such as orange peel oil and magnolia oil are added to enhance the skincare fragrance and soothe irritation, improving the user's sensory experience. Orange peel oil and magnolia oil are added at 0.2% and 0.008% respectively, giving the product a fresh fragrance while exerting a mild anti-inflammatory and calming effect. Specifically, these aromatic ingredients help reduce the tightness of the skin after makeup removal and bring a pleasant feeling.

[0089] Based on the correlation between the K value and the skin permeability coefficient D, if K≤D, then meadowfoam seed oil should be added to improve overall moisturization. The formula is expressed as: if K≤D, add meadowfoam seed oil to 0.3–0.5%, where K represents the permeability coefficient of the oil phase (cm / s) and D represents the skin permeability coefficient (units as above). This formula balances the permeability and moisturizing power of oils by dynamically adjusting the proportion of meadowfoam seed oil in the formula. For example, when K=0.7cm / s and D=0.8cm / s, according to the formula, an additional 0.3% meadowfoam seed oil needs to be added to improve the overall nourishing effect.

[0090] Next, the steps describing the anti-inflammatory synergistic mechanism of the present invention based on bisabolol and centella asiatica extract are further described. A two-layer emulsification process is used to premix bisabolol and centella asiatica extract in the oil phase to improve the uniformity and stability of the two in the subsequent emulsification process. Premixing helps to ensure that bisabolol and centella asiatica extract can be effectively combined in the subsequent mixing process, enhancing their synergistic effect. For example, in the preparation of a skin-renewing makeup remover oil, bisabolol and centella asiatica extract are first fully mixed in the oil phase, and then introduced into the aqueous phase through the emulsification process to form a stable system, ensuring that both exhibit high solubility in water in order to exert a synergistic anti-inflammatory effect. The higher the solubility, the better the effective release and bioavailability of the ingredients can be guaranteed, thereby improving the functional effect of the product.

[0091] Next, the steps of the present invention, which optimize the emulsification process based on the matching of oils and additives, are further described. A rotational viscometer is used to test the viscosity change before emulsification to evaluate the initial compatibility between the oils and additives. For example, in the preparation of a skin-renewing cleansing oil, the initial viscosity under different proportions of oil combinations is tested to determine whether adjustments are needed to ensure subsequent emulsification efficiency. The parameters in each step are set according to actual process requirements to ensure system stability. Increasing the ratio of PEG-8 diisostearate to isohexadecane and performing high-speed shear emulsification aims to enhance emulsification stability and improve product uniformity and spreadability. For example, in one embodiment, the PEG-8 diisostearate content is increased from 3% to 4.5%, while the isohexadecane content is increased from 8% to 10%, at a rotational speed of 12000 r / min. Stirring for 3 minutes at pm can significantly improve the smoothness of the emulsion. Adding magnolia oil helps to balance the volatile odor and long-lasting fragrance, improving the user experience through its unique aroma. For example, controlling it at 0.005%-0.01% does not mask the flavor of other natural essential oils and can prolong the fragrance retention time. Based on the relationship between viscosity fluctuation ΔV and shear force F, if ΔV≤10%, the shear speed is reduced to 1000rpm. This formula is used to control the shear force and avoid instability caused by excessive stirring. ΔV represents the change in viscosity during emulsification, in Pa·s, with the optimal range being ΔV≤10%, and F represents the shear speed, which is best set to ≤1000rpm. This setting can reduce unnecessary energy consumption and mechanical losses while maintaining the consistency of product quality.

[0092] Next, the steps of the process for optimizing formulation stability based on the synergistic regulation of temperature and time according to the present invention are further described. First, the temperature is raised to 60°C and maintained at this temperature for 30 minutes. This step promotes thorough mixing and initial chemical reactions of the components by increasing the system temperature, thereby enhancing the overall stability of the formulation. For example, in a method for preparing a skin-renewing cleansing oil, maintaining the temperature at 60°C for 30 minutes ensures that oil components such as cetyl ethylhexanoate and sorbitol polyether-30 tetraoleate are more evenly dispersed. Then, the temperature is lowered to 40°C for low-temperature storage for at least 24 hours. This process helps to further stabilize the emulsion system and reduce the risk of oxidation or decomposition of oil components. In one embodiment, after cooling, the prepared cleansing oil is stored in a 40°C environment to verify the effect of low temperature on the long-term stability of the formulation and to monitor the accumulation rate of oil decomposition products in the system. In addition, the storage time is extended as needed. This step involves real-time monitoring of the finished product to promptly determine whether the formula has sufficient stability. Specifically, if a rapid rate of oil decomposition is detected, the storage time can be extended to ensure quality. Based on the ambient temperature T and the number of storage days D, if T > 30℃ or D > 7, the storage time is extended to more than 48 hours. Here, T represents the external ambient temperature in °C, with a recommended range of 20~35℃; D represents the storage time in days, with a recommended range of 1~14 days. The optimal values ​​are set as T≤30 and D≤7. The purpose of this formula is to ensure that the formula can maintain good stability under high temperature or long-term environmental conditions. If T > 30 or D > 7, it indicates that the environmental conditions may pose a significant threat to the stability of the formula. In this case, extending the storage time to 48 hours can further reduce the risk of decomposition.

[0093] Next, the batch consistency control steps of the present invention are further described. The main and auxiliary materials in each production batch are weighed, calibrated, and recorded. This is to ensure that all raw materials are added accurately according to the formula requirements, reducing formula deviations caused by weighing errors. For example, when preparing a mixture of cetyl ethylhexanoate and ethylhexyl palmitate, a validated balance is used for secondary calibration to ensure that the weight deviation does not exceed ±0.5%. Implementing a uniform mixing sequence and controlling equipment parameters is to maintain the consistency of the formula components across different batches, avoiding quality fluctuations caused by inconsistent mixing sequences or operating conditions. In one embodiment, when mixing sorbitol polyether-30 tetraoleate and PEG-8 diisostearate, the stirring speed is set to 300 rpm for 15 minutes to ensure uniform composition. To prevent cross-contamination, a cleaning and verification process is performed after each operation, ensuring that the characteristics of each batch of products are not affected by previous batches. Specifically, after each blending, the equipment must be thoroughly cleaned and checked for any residual substances. Based on the formula consistency coefficient C, if C ≤ 85 for three consecutive times, the metering system needs to be recalibrated. C is a quantitative value used to reflect the stability of the formula, ranging from 0 to 1. The closer the value is to 1, the more stable the formula. The formula is set as follows: if C ≤ 0.85 for three consecutive times, the calibration mode is activated. This is because a formula stability below the threshold indicates that there may be an anomaly in the metering system or an accumulation of human error, which needs to be corrected in time to ensure product quality. The optimal setting is C = 0.85, which, as a threshold, ensures both production efficiency and effectively avoids quality risks.

[0094] Next, the product sensory attribute adjustment steps of the present invention are further described. Color and flowability analysis of the finished product are performed, and adjustments are made based on the user's visual and tactile experience to ensure that the product's appearance and feel during use meet consumer expectations. For example, in one embodiment, if the product is yellowish or too viscous, the amount of pigment added and the oil ratio need to be adjusted to make the product more fluid and the color softer. The impact of the formula on the user's skin tone and sensitivity after use is examined, and the mildness and effectiveness of the formula are evaluated. Specifically, skin tests are conducted to confirm whether there are any adverse reactions such as redness or stinging, ensuring that the formula is suitable for different skin types, especially sensitive skin users. The fragrance, oiliness, and residue after washing are comprehensively evaluated and adjusted to meet different consumer preferences. For example, if users report that the odor is too strong or sticky, the amount of fragrance can be reduced or replaced with ingredients that are easier to remove. Based on user satisfaction Q and product rating S, if Q < 70 and S < 5, the oil ratio should be optimized. The formula is: if Q < 70 and S < 4.5, the oil ratio adjustment range is (70 - Q) × 0.05%, where Q is the percentage of user satisfaction (%, ranging from 0 to 100), and S is the rating (ranging from 0 to 15, with a maximum score of 15). This formula is based on the premise that when user satisfaction is below 70% or the rating is below 4.5, it indicates that the product has failed to meet user expectations. Therefore, the oil ratio needs to be adjusted accordingly based on the numerical difference. This calculation method can accurately quantify the direction of improvement and ensure that the overall sensory experience of the final product reaches a high level.

[0095] The present invention provides a method for preparing a skin-renewing makeup remover oil, comprising: firstly, weighing cetyl ethylhexanoate, ethylhexyl palmitate, isohexadecane, and other oil components according to the specified mass ratio, adding them to a reaction vessel, and heating to 40-60°C under stirring to ensure thorough mixing; subsequently, gradually adding surfactants such as sorbitol polyether-30 tetraoleate, PEG-8 diisostearate, and PEG-20 glyceryl triisostearate, and continuing stirring to ensure uniform dispersion of each component; after the system temperature drops to 30-40°C, sequentially adding olive fruit oil, tocopherol, squalane, jojoba seed oil, meadowfoam seed oil, sweet orange peel oil, bisabolol, centella asiatica extract, and magnolia (Magnolia) extract. DENUDATA extracts active ingredients such as flower oils, which are thoroughly stirred until fully emulsified. The mixture is then cooled to room temperature and filtered to obtain the finished product. This preparation method, through scientific formulation and optimized process steps, achieves highly efficient emulsification stability and gentle makeup removal effect for the skin-renewing cleansing oil. The synergistic effect of various natural oils and surfactants effectively enhances the product's hydrophilic-lipophilic balance, thereby improving its emulsification stability. Meanwhile, the combination of moisturizing ingredients such as olive fruit oil, squalane, jojoba seed oil, and meadowfoam seed oil, along with skin-care ingredients such as centella asiatica extract, bisabolol, and vitamin E, enhances the product's skin moisturizing and skincare effects. Through this multi-layered formulation design, this invention can simultaneously remove makeup and address skincare needs, meeting consumers' demands for a gentle, efficient, and nourishing makeup remover.

[0096] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A skin-renewing cleansing oil formula, characterized in that, Includes the following components by weight percentage: Cetyl ethylhexanoate: 40-60%; Ethylhexyl palmitate: 10-25%; Isohexadecane: 6-12%; Sorbitol polyether-30 tetraoleate: 3-8%; PEG-8 diisostearate: 3-6%; PEG-20 glyceryl triisostearate: 1-5%; Olive fruit oil: 0.01-1%; Tocopherol (Vitamin E): 0.2-0.5%; Squalane: 0.1-1%; Jojoba seed oil: 0.01-0.8%; Meadowfoam seed oil: 0.01-0.6%; Orange peel oil: 0.1-0.3%; Bisabolol: 0.1-0.5%; Centella asiatica extract: 0.01-0.1%; Magnolia flower oil: 0.005-0.01%.

2. A method for preparing a skin-renewing makeup remover oil, characterized in that, The step of optimizing the component ratio to improve emulsion stability further includes: By adjusting the ratio of cetyl ethylhexanoate to PEG-8 diisostearate, a balance is achieved between fatty acid ester components and polyoxyethylene ether surfactants in the system. Based on this ratio adjustment, the amount of sorbitol polyether-30 tetraoleate was increased to 7% to improve the interfacial film strength. The addition of tocopherol as an antioxidant reduces the risk of emulsion breakdown due to oxidative instability; Based on the ratio of polar to non-polar components in the formulation, when the mass fraction of the polar component... Greater than the mass fraction of nonpolar components At the same time, the squalane content in the system is increased to ensure that the system has a stable emulsion structure; if Then the dosage of squalane can be increased to 0.7-0.9%, of which This indicates the mass percentage of the polar component in the system. This indicates the mass percentage of nonpolar components in the system.

3. The method for preparing a skin-renewing makeup remover oil according to claim 2, characterized in that, The step based on surfactant synergistic effect further includes: During the mixing process, the PEG-20 glycerol triisostearate is first dissolved in the oil phase; Then add sorbitol polyether-30 tetraoleate in sequence and stir thoroughly until a uniform and transparent oil phase is formed; Add the aqueous phase, emulsify gradually, and control the shear rate to keep it below 1500 rpm; Based on the viscosity index after emulsification and emulsion stability ,like and Then increase the amount of PEG-8 diisostearate; if and The amount of PEG-8 diisostearate was increased to 5-6%, of which It is the emulsified viscosity (mPa·s). It is the baseline value. It is an indicator of emulsion stability. It sets a threshold.

4. The method for preparing a skin-renewing makeup remover oil according to claim 3, characterized in that, The step of enhancing skin nourishment based on oil combination further includes: In the oil phase, highly permeable vegetable oils such as olive fruit oil, squalane, and jojoba seed oil are preferred for blending. Based on the skin's hydration needs, the proportion of each oil is controlled to ensure the overall permeability. Not less than 0.8 cm / s; At the same time, essential oils such as orange peel oil and magnolia oil are added to enhance the skincare fragrance and soothe irritation. based on Value and skin dialysis coefficient The correlation, if Then supplement with meadowfoam seed oil to improve overall moisturization; if Add meadowfoam seed oil to 0.3%-0.5%, where K represents the overall permeability coefficient (cm / s) of the components in the oil phase. It is the skin's hydration and dialysis coefficient.

5. The method for preparing a skin-renewing makeup remover oil according to claim 4, characterized in that, The steps based on the anti-inflammatory synergistic mechanism of bisabolol and Centella asiatica extract further include: A two-layer emulsification process was used to premix bisabolol and centella asiatica extract in the oil phase; Both should be kept highly soluble in water to achieve a synergistic anti-inflammatory effect. Based on the mass fraction of bisabolol With Centella Asiatica extract content The proportions, if If necessary, the amount of bisabolol added should be reduced appropriately; if ,but Reduced by less than 0.5%, of which This is the mass percentage of bisabolol. It represents the mass percentage of Centella Asiatica extract.

6. The method for preparing a skin-renewing makeup remover oil according to claim 5, characterized in that, The step of optimizing the emulsification process based on the matching of oils and additives further includes: The viscosity change before emulsification was tested using a rotational viscometer; Increase the ratio of PEG-8 diisostearate to isohexadecane and perform high-speed shear emulsification; Magnolia flower oil was added to balance the volatile aroma and long-lasting fragrance; Based on viscosity fluctuations With shear force If the relationship, Then reduce the shearing speed to 1000 rpm; if ,but Reduce to below 1000 rpm, of which This indicates the viscosity change (Pa·s) during emulsification. Indicates the shearing speed (rpm).

7. The method for preparing a skin-renewing makeup remover oil according to claim 6, characterized in that, The steps of the process for optimizing formulation stability based on the synergistic regulation of temperature and time further include: The temperature was initially raised to 60℃ and maintained at that temperature for 30 minutes. Then lower the temperature to 40°C and store at low temperature for at least 24 hours; Monitor the accumulation rate of oil decomposition products in the system and extend the storage time as appropriate; Based on ambient temperature With storage days D, if or If so, the storage time can be extended to more than 48 hours; if or The time limit will be extended to 48 hours, of which It refers to the external ambient temperature (°C). It refers to the storage time.

8. The method for preparing a skin-renewing makeup remover oil according to claim 7, characterized in that, The batch consistency control step based on the formula further includes: Weigh, calibrate, and record the main and auxiliary materials in each production batch; Implement a unified mixing sequence and control equipment parameters; Perform cleaning and verification procedures after each operation to prevent cross-contamination; Based on the formula consistency coefficient If three times in a row If so, the metering system needs to be recalibrated; If three times in a row Start calibration mode, where The quantitative value (range 0–1) represents the consistency of the formulation; the closer the value is to 1, the more stable it is.

9. The method for preparing a skin-renewing makeup remover oil according to claim 8, characterized in that, The adjustment step based on product sensory attributes further includes: The finished product is analyzed for color and flowability, and adjustments and improvements are made based on the user's visual and tactile experience. Examine the effects of the formula on users' skin tone and sensitivity after use; A comprehensive evaluation and adjustment of the product's aroma, oiliness, and cleaning residue was conducted. Based on user satisfaction and product ratings ,like and If separated, the oil ratio will be optimized; if and The adjustment range for the optimized oil ratio is as follows: ,in It is a percentage of user satisfaction. It's a rating.

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