Flawless moisturizing and makeup fixing spray

Abstract

The invention relates to the technical field of cosmetics, and discloses flawless moisturizing and makeup fixing spray which is prepared from aloe barbadensis leaf juice, polyhydric alcohol, polyvinylpyrrolidone, acrylic ester / allyl methacrylate copolymer AMP salt, pullulan, an emulsifier, a preservative, deionized water and the like. By constructing a ternary synergistic film forming system of polyvinylpyrrolidone, the AMP salt copolymer and the pullulan, the steric hindrance effect of the pullulan is utilized to reduce the film forming internal stress and eliminate the skin tension, and the AMP salt copolymer is matched to improve the hydrophobicity of a film layer. According to the preparation method, a specific step-by-step variable-temperature dissolution process is adopted, polysaccharide is dissolved preferentially under a warm condition, then PVP is dispersed at a high speed, AMP salt is introduced after cooling, and polymer agglomeration is effectively avoided. The make-up fixing spray has high make-up holding power, excellent water resistance and low tightening feeling, the physicochemical property of the system is stable, and heat and cold resistance tests show that the make-up fixing spray is not layered and separated out.

Description

Technical Field

[0001] This application relates to the field of cosmetic technology, specifically to a flawless moisturizing setting spray. Background Technology

[0002] Setting spray is an important product in the makeup process, used to prolong the wear time of makeup and prevent makeup from fading and settling into fine lines. Its working principle is mainly based on the high-molecular-weight film-forming agents in the formula that form a continuous thin film on the skin's surface, fixing the base makeup and color powder to the skin and forming a barrier against external friction and sweat.

[0003] Most setting sprays on the market currently use polyvinylpyrrolidone (PVP) or polyvinyl acetate (PVC) and its derivatives as the main film-forming agent. While PVP produces a film with high hardness and strong adhesion, it also exhibits significant volume shrinkage during film formation, easily causing a noticeable tightness on the face after drying, affecting user comfort. Furthermore, PVP polymers have strong hygroscopic properties, easily absorbing water and softening or even becoming sticky in humid environments or when the skin sweats, leading to film damage and patchy makeup. To improve water resistance, existing technologies often incorporate acrylate copolymers, but this often further increases the film's hardness and brittleness, making it difficult for the film to adapt to the rich facial muscle movements, easily causing breakage or white flakes during use.

[0004] To alleviate the dryness and tightness caused by film-forming agents, formulators often add large amounts of polyols or oil-based moisturizers. However, small-molecule moisturizers can interfere with the film-forming density of polymer chains, acting like plasticizers to excessively soften the film, resulting in a significant decrease in film strength and reduced friction resistance, making it difficult to achieve the desired makeup-setting effect. Furthermore, when different types of polymeric film-forming agents are compounded, differences in hydrophilicity / hydrophobicity and molecular weight can easily lead to competitive hydration or microphase separation if a suitable solvent system or process control is lacking. This can cause stability issues such as turbidity, flocculation, or even precipitation during long-term storage. Therefore, developing a setting spray system that can maintain high makeup staying power and water resistance while eliminating tightness and exhibiting good stability is a pressing problem in the cosmetics industry. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a flawless moisturizing setting spray, which solves the problem that existing setting sprays are unable to eliminate the tightness of the skin after film formation while maintaining high makeup staying power and water resistance.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] In a first aspect, the present invention provides a flawless moisturizing setting spray, which adopts the following technical solution:

[0008] This flawless moisturizing setting spray is made from ingredients comprising the following parts by weight:

[0009] Aloe vera leaf juice: 1.00-5.00 parts;

[0010] 1,2-Propanediol: 1.00-3.00 parts;

[0011] 1,3-Butanediol: 0.50-1.50 parts;

[0012] Glycerol: 0.20-1.00 parts;

[0013] 1,2-Pentanediol: 0.05-0.50 parts;

[0014] Polyvinylpyrrolidone: 0.50-2.00 parts;

[0015] Acrylic ester / allyl methacrylate copolymer AMP salt: 0.30-1.00 parts;

[0016] Pullulan: 0.10-0.50 parts;

[0017] Polysorbate-20: 0.50-1.20 parts;

[0018] Phenoxyethanol: 0.50-1.00 parts;

[0019] Daily-use fragrance: 0.05-0.30 parts;

[0020] 1,2-Octanediol: 0.05-0.10 parts;

[0021] Ethylhexylglycerin: 0.01-0.05 parts;

[0022] Caprylic / capric triglycerides: 0.005-0.05 parts;

[0023] Tea extract: 0.005-0.05 parts;

[0024] Deionized water: 80.00-96.00 parts.

[0025] By employing the above technical solution, this invention constructs a ternary synergistic film-forming system of polyvinylpyrrolidone, acrylate / allyl methacrylate copolymer AMP salt, and pullulan, achieving a balance between high makeup-holding power and low tightness. Its mechanism of action is as follows:

[0026] Rigid framework construction: Polyvinylpyrrolidone (PVP) acts as the primary film-forming agent, forming a basic adhesion layer on the skin surface to provide the mechanical strength required for makeup setting.

[0027] Hydrophobic modification: The AMP salt of acrylate / allyl methacrylate copolymer contains hydrophobic segments. This component is interspersed in the hydrophilic PVP network, which reduces the surface energy of the membrane and improves the resistance of the finished membrane to moisture and sweat, preventing the membrane from absorbing moisture and becoming sticky or dissolving.

[0028] Stress Dissipation and Toughening: Pullulan is a linear extracellular polysaccharide with a long-chain structure. In the system, pullulan utilizes steric hindrance to interfere with the excessively tight packing and crystallization of PVP molecular chains, acting similarly to a macromolecular plasticizer. This structure reduces the volume shrinkage rate and internal stress during film formation, thereby eliminating the skin tightness caused by traditional hard films; at the same time, the polysaccharide molecular chains endow the film layer with better flexibility, enabling it to adapt to deformation caused by facial micro-expressions and preventing film breakage.

[0029] Preferably, the raw materials include:

[0030] The weight parts of polyvinylpyrrolidone are 0.80-2.00 parts;

[0031] The pullulan polysaccharide has a weight fraction of 0.25-0.50 parts;

[0032] The weight parts of phenoxyethanol are 0.80-1.00 parts;

[0033] The remaining raw materials are in the following weight proportions:

[0034] Aloe vera leaf juice: 2.94-5.00 parts;

[0035] 1,2-Propanediol: 2.00-3.00 parts;

[0036] 1,3-Butanediol: 0.80-1.50 parts;

[0037] Glycerol: 0.50-1.00 parts;

[0038] 1,2-Pentanediol: 0.10-0.50 parts;

[0039] Acrylic ester / allyl methacrylate copolymer AMP salt: 0.53-1.00 parts;

[0040] Polysorbate-20: 0.80-1.20 parts;

[0041] Daily-use fragrance: 0.20-0.30 parts;

[0042] 1,2-Octanediol: 0.07-0.10 parts;

[0043] Ethylhexylglycerin: 0.03-0.05 parts;

[0044] Caprylic / capric triglycerides: 0.01-0.05 parts;

[0045] Tea extract: 0.01-0.05 parts;

[0046] Deionized water: 82.75-89.96 parts.

[0047] By employing the above technical solution, and by limiting the high content range of the core film-forming components PVP and pullulan, along with a sufficient amount of the preservative phenoxyethanol, the setting spray significantly improves the integrity and abrasion resistance of the film while ensuring microbial safety. This preferred ratio enables the formation of a dense and elastic continuous film structure, exhibiting lower color difference values ​​in wet abrasion tests.

[0048] Preferably, the polyvinylpyrrolidone, the acrylate / allyl methacrylate copolymer AMP salt, and pullulan together constitute a ternary synergistic film-forming system, and the weight ratio of the acrylate / allyl methacrylate copolymer AMP salt to pullulan is 2:1 to 6:1.

[0049] By adopting the above technical solution and controlling the mass ratio of hydrophobic copolymer to hydrophilic polysaccharide within this range, it is possible to ensure that the film-forming system undergoes appropriate microphase separation during the drying process, and the hydrophobic groups tend to be oriented at the gas-liquid interface. This maximizes the hydrophobic angle of the film surface and improves the water resistance without affecting the toughening effect of the polysaccharide.

[0050] Preferably, the setting spray is a colorless transparent liquid or a slightly opalescent liquid with a pH value of 6.0-7.0; and the setting spray has the following stability characteristics: it does not separate into layers after centrifugation at 3000 rpm for 30 minutes; it remains clear without precipitation after being placed at 45°C for 30 days; and it does not become turbid or crystallize after being cycled 3 times from -5°C to room temperature.

[0051] By adopting the above technical solution, the system exhibits excellent colloidal stability in slightly acidic to neutral environments. No demulsification, flocculation, or precipitation occurred after heat resistance, cold resistance, and centrifugation tests, ensuring the stability of the product's physical properties during storage and transportation.

[0052] Secondly, the present invention provides a method for preparing a flawless moisturizing setting spray, which adopts the following technical solution:

[0053] The preparation method of a flawless moisturizing setting spray includes the following steps:

[0054] S1: Add the prescribed amount of deionized water to the main reactor, stir, and then add 1,2-propanediol, 1,3-butanediol, glycerol, 1,2-pentanediol and aloe vera leaf juice in sequence. Heat and mix evenly to obtain phase A.

[0055] S2: Maintain the temperature of phase A, slowly add pullulan polysaccharide to phase A and stir until dissolved, then increase the stirring speed and add polyvinylpyrrolidone and stir until dissolved; stop heating and cool down, and after the temperature drops, reduce the stirring speed and add acrylate / allyl methacrylate copolymer AMP salt, and stir to obtain a mixture containing a ternary synergistic film-forming system;

[0056] S3: Polysorbate-20, phenoxyethanol, 1,2-octanediol, ethylhexylglycerin, caprylic / capric triglyceride and daily fragrance are premixed and stirred to obtain phase C;

[0057] S4: Add the C phase to the main reactor obtained in step S2 and homogenize it. Then add tea extract and stir evenly. Adjust the pH value and filter to obtain the final product.

[0058] By adopting the above technical solution, especially the specific stepwise dissolution and temperature-controlled process in step S2, the problem of competitive hydration and aggregation caused by the differences in the dissolution characteristics of different polymer raw materials is solved. The microscopic process of this step is as follows:

[0059] Preferential hydration: Pullulan polysaccharides are preferentially dissolved under warm conditions, allowing their molecular chains to fully extend and form a hydrophilic matrix with a certain viscosity.

[0060] Dispersion and stability: PVP is then added under high shear stress. The pre-existing pullulan polysaccharide network acts as a dispersion medium, preventing excessive entanglement between PVP molecular chains and promoting its uniform dispersion and dissolution.

[0061] Temperature-controlled compounding: After cooling, AMP salt of acrylate / allyl methacrylate copolymer is added to avoid copolymer phase transformation or precipitation that may occur at high temperatures. At the same time, low-speed stirring prevents system instability caused by shear heat. This orderly assembly process ensures uniform mixing of the ternary film-forming agents at the microscale, avoiding molecular agglomeration and uneven film formation caused by direct mixing. This significantly reduces the tightness of the film after formation and improves the transparency and stability of the system.

[0062] Preferably, in step S2, the temperature of phase A is maintained at 40-45℃; the dissolution time of pullulan is 20-30 minutes; increasing the stirring speed means increasing the rotation speed to 800-1200 rpm, and the dissolution time of polyvinylpyrrolidone is 15-20 minutes; waiting for the temperature to decrease means lowering the temperature to 25-35℃; and decreasing the stirring speed means reducing the rotation speed to 200-400 rpm.

[0063] By adopting the above technical solution, the thermodynamic and kinetic conditions at each stage were precisely controlled. 40-45℃ is a suitable temperature range that balances dissolution efficiency and raw material activity; a high rotation speed of 800-1200rpm ensures rapid dispersion of polymeric PVP; while cooling to 25-35℃ and reducing the rotation speed provide a mild compounding environment for heat-sensitive and shear-sensitive AMP salt copolymers, maximizing the preservation of the film-forming efficiency of each component.

[0064] Preferably, the specific operation of step S4 is as follows:

[0065] Phase C is slowly added to the mixture obtained in step S2 for homogenization.

[0066] After homogenization, add tea extract and stir at a low speed of 200-400 rpm until well mixed.

[0067] The pH was then adjusted to 6.0-7.0 using citric acid solution, and finally filtered through a 400-mesh filter to obtain the final product.

[0068] By adopting the above technical solution, the material introduction sequence and shear strength control in the post-processing stage were clarified.

[0069] In summary, this application includes at least one of the following beneficial technical effects:

[0070] 1. This invention constructs a ternary synergistic film-forming system of polyvinylpyrrolidone (PVP), AMP salt of acrylate / allyl methacrylate copolymer, and pullulan. PPVP provides basic adhesion and mechanical strength; pullulan, utilizing the steric hindrance effect of its large molecular long-chain structure, interferes with the excessive accumulation of PPVP, effectively reducing volume shrinkage and internal stress during film formation, thus solving the skin tightness caused by traditional hard makeup setting films; simultaneously, the combination with the AMP salt copolymer with hydrophobic side chains improves the surface hydrophobic angle of the film layer, enabling the setting spray to possess excellent anti-friction makeup-holding power, water resistance, and a comfortable skin feel.

[0071] 2. This invention employs a specific stepwise dissolution and temperature-controlled preparation process, significantly improving the physicochemical stability of the system. By preferentially hydrating pullulan under warm conditions, followed by high-shear dispersion of polyvinylpyrrolidone, and then introducing a heat-sensitive AMP salt copolymer at a low speed after cooling, this process effectively avoids agglomeration or microphase separation caused by competitive hydration of various polymeric raw materials during mixing. The resulting product has a uniform, transparent or slightly opalescent appearance and shows no stratification, precipitation, or flocculation in heat resistance, cold resistance, and high-speed centrifugation tests, which is beneficial for long-term storage.

[0072] 3. This invention combines a gradient of polyols and aloe vera leaf juice in the film-forming system, along with a process of adding tea extract at low temperatures, to construct a gentle moisturizing skincare base. The polyols and aloe vera extract can lock in moisture beneath the film-forming layer, alleviating skin dryness that may occur during the drying and solidification of the film-forming agent. Strictly controlled pH levels and a low-speed post-processing technique maximize the preservation of plant-based active ingredients and ensure the product's gentleness, reducing the risk of irritation to sensitive skin. Detailed Implementation

[0073] The main raw materials and reagents used in the following examples and comparative examples have the following sources and specifications. Reagents not specifically mentioned are all commercially available analytical grade or higher grade products.

[0074] The standard ingredients include deionized water, aloe vera leaf juice, 1,2-propanediol, 1,3-butanediol, glycerol, 1,2-pentanediol, polysorbate-20, phenoxyethanol, 1,2-octanediol, ethylhexylglycerin, caprylic / capric triglyceride, tea extract, citric acid, and arginine, all of which are commercially available cosmetic grade or analytical grade products.

[0075] Polyvinylpyrrolidone, CAS No. 9003-39-8, weight-average molecular weight 40,000-60,000 Daltons;

[0076] Pullulan, CAS No. 9057-02-7, has a weight-average molecular weight of 100,000-200,000 Daltons.

[0077] Preparation Examples 1-3:

[0078] Preparation Example 1:

[0079] This preparation example provides a ternary synergistic film-forming premix M1, including the following steps:

[0080] Take 50g of deionized water, heat it to 42℃, maintain the stirring speed at 400rpm, slowly add 0.25g of pullulan, and stir for 25 minutes until completely dissolved;

[0081] Increase the stirring speed to 1000 rpm, add 1.00 g of polyvinylpyrrolidone, and stir at a constant temperature for 20 minutes to disperse and dissolve it.

[0082] Stop heating and wait for the temperature to drop to 30°C. Reduce the stirring speed to 300 rpm, add 0.53 g of acrylate / allyl methacrylate copolymer AMP salt, and stir for 10 minutes to obtain the final product.

[0083] Preparation Example 2:

[0084] This preparation example provides a ternary synergistic film-forming premix M2, including the following steps:

[0085] Take 50g of deionized water, heat it to 45℃, maintain a stirring speed of 500rpm, slowly add 0.50g of pullulan, and stir for 30 minutes until completely dissolved;

[0086] Increase the stirring speed to 1200 rpm, add 2.00 g of polyvinylpyrrolidone, and stir at a constant temperature for 20 minutes to disperse and dissolve it.

[0087] Stop heating and wait for the temperature to drop to 30°C. Reduce the stirring speed to 400 rpm, add 1.00 g of acrylate / allyl methacrylate copolymer AMP salt, and stir for 15 minutes to obtain the final product.

[0088] Preparation Example 3:

[0089] This preparation example provides a ternary synergistic film-forming premix M3, including the following steps:

[0090] Take 50g of deionized water, heat it to 40℃, maintain a stirring speed of 300rpm, slowly add 0.10g of pullulan, and stir for 20 minutes until completely dissolved;

[0091] Increase the stirring speed to 800 rpm, add 0.50 g of polyvinylpyrrolidone, and stir at a constant temperature for 15 minutes to disperse and dissolve it.

[0092] Stop heating and wait for the temperature to drop to 30°C. Reduce the stirring speed to 200 rpm, add 0.30 g of acrylate / allyl methacrylate copolymer AMP salt, and stir for 10 minutes to obtain the final product.

[0093] Examples 1-3:

[0094] Example 1:

[0095] This embodiment provides a flawless moisturizing setting spray, the raw materials of which are composed of the following parts by weight: 2.94 parts of aloe vera leaf juice, 2.00 parts of 1,2-propanediol, 0.80 parts of 1,3-butanediol, 0.50 parts of glycerol, 0.10 parts of 1,2-pentanediol, 1.00 parts of polyvinylpyrrolidone, 0.53 parts of AMP salt of acrylate / allyl methacrylate copolymer, 0.25 parts of pullulan, 0.80 parts of polysorbate-20, 0.80 parts of phenoxyethanol, 0.20 parts of (daily use) fragrance, 0.07 parts of 1,2-octanediol, 0.03 parts of ethylhexylglycerin, 0.01 parts of caprylic / capric triglyceride, 0.01 parts of tea extract, and 89.96 parts of deionized water.

[0096] This setting spray includes the following preparation steps:

[0097] (1) Add the amount of deionized water in the formula to the main reactor, turn on the stirring to 300 rpm, and add 1,2-propanediol, 1,3-butanediol, glycerol, 1,2-pentanediol and aloe vera leaf juice in sequence. Heat to 42°C and stir at a constant temperature for 10 minutes until the mixture is uniform to obtain phase A.

[0098] (2) Keep the temperature at 42℃, maintain the stirring speed at 400rpm, slowly add pullulan polysaccharide, and stir for 25 minutes until completely dissolved; then increase the stirring speed to 1000rpm, add polyvinylpyrrolidone, and stir at a constant temperature for 20 minutes to disperse and dissolve it; stop heating, turn on the circulating water cooling, and when the temperature drops to 30℃, reduce the stirring speed to 300rpm, add acrylate / allyl methacrylate copolymer AMP salt, and stir for 10 minutes to obtain a mixture containing a ternary synergistic film-forming system;

[0099] (3) In a premixed container, polysorbate-20, phenoxyethanol, 1,2-octanediol, ethylhexylglycerin, caprylic / capric triglyceride and (daily use) fragrance are mixed and stirred at 500 rpm for 5 minutes at room temperature to obtain phase C;

[0100] (4) Slowly add phase C to the main reactor of step (2), turn on the homogenizer and homogenize at 1800 rpm for 4 minutes; then add tea extract, stir evenly at 300 rpm, adjust the pH to 6.5 with citric acid solution, and filter through a 400 mesh filter to obtain the final product.

[0101] Example 2:

[0102] This embodiment provides a long-lasting, flawless, moisturizing setting spray, the raw materials of which, by weight, are: 5.00 parts of aloe vera leaf juice, 3.00 parts of 1,2-propanediol, 1.50 parts of 1,3-butanediol, 1.00 parts of glycerol, 0.50 parts of 1,2-pentanediol, 2.00 parts of polyvinylpyrrolidone, 1.00 parts of AMP salt of acrylate / allyl methacrylate copolymer, 0.50 parts of pullulan, 1.20 parts of polysorbate-20, 1.00 parts of phenoxyethanol, 0.30 parts of (daily use) fragrance, 0.10 parts of 1,2-octanediol, 0.05 parts of ethylhexylglycerin, 0.05 parts of caprylic / capric triglyceride, 0.05 parts of tea extract, and 82.75 parts of deionized water.

[0103] This setting spray includes the following preparation steps:

[0104] (1) Add the amount of deionized water in the formula to the main reactor, turn on the stirring to 500 rpm, and add 1,2-propanediol, 1,3-butanediol, glycerol, 1,2-pentanediol and aloe vera leaf juice in sequence. Heat to 45°C and stir at a constant temperature for 15 minutes until the mixture is uniform to obtain phase A.

[0105] (2) Keep the temperature at 45℃, maintain the stirring speed at 500 rpm, slowly add pullulan polysaccharide, and stir for 30 minutes until completely dissolved; then increase the stirring speed to 1200 rpm, add polyvinylpyrrolidone, and stir at a constant temperature for 20 minutes to disperse and dissolve it; stop heating, turn on the circulating water cooling, and when the temperature drops to 35℃, reduce the stirring speed to 400 rpm, add acrylate / allyl methacrylate copolymer AMP salt, and stir for 15 minutes to obtain a mixture containing a ternary synergistic film-forming system;

[0106] (3) In a premixed container, polysorbate-20, phenoxyethanol, 1,2-octanediol, ethylhexylglycerin, caprylic / capric triglyceride and (daily use) fragrance are mixed and stirred at 600 rpm for 10 minutes at room temperature to obtain phase C;

[0107] (4) Slowly add phase C to the main reactor of step (2), turn on the homogenizer and homogenize at 2000 rpm for 5 minutes; then add tea extract, stir evenly at 400 rpm, adjust the pH to 6.0 with citric acid solution, and filter through a 400 mesh filter to obtain the final product.

[0108] Example 3:

[0109] This embodiment provides a lightweight, flawless, moisturizing setting spray, the raw materials of which, by weight, are: 1.00 parts of aloe vera leaf juice, 1.00 parts of 1,2-propanediol, 0.50 parts of 1,3-butanediol, 0.20 parts of glycerol, 0.05 parts of 1,2-pentanediol, 0.50 parts of polyvinylpyrrolidone, 0.30 parts of AMP salt of acrylate / allyl methacrylate copolymer, 0.10 parts of pullulan, 0.50 parts of polysorbate-20, 0.50 parts of phenoxyethanol, 0.05 parts of (daily use) fragrance, 0.05 parts of 1,2-octanediol, 0.01 parts of ethylhexylglycerin, 0.005 parts of caprylic / capric triglyceride, 0.005 parts of tea extract, and 95.23 parts of deionized water.

[0110] This setting spray includes the following preparation steps:

[0111] (1) Add the amount of deionized water in the formula to the main reactor, turn on the stirring to 300 rpm, and add 1,2-propanediol, 1,3-butanediol, glycerol, 1,2-pentanediol and aloe vera leaf juice in sequence. Heat to 40°C and stir at a constant temperature for 10 minutes until the mixture is uniform to obtain phase A.

[0112] (2) Keep the temperature at 40℃, maintain the stirring speed at 300rpm, slowly add pullulan polysaccharide, and stir for 20 minutes until completely dissolved; then increase the stirring speed to 800rpm, add polyvinylpyrrolidone, and stir at a constant temperature for 15 minutes to disperse and dissolve it; stop heating, turn on the circulating water cooling, and when the temperature drops to 25℃, reduce the stirring speed to 200rpm, add acrylate / allyl methacrylate copolymer AMP salt, and stir for 10 minutes to obtain a mixture containing a ternary synergistic film-forming system;

[0113] (3) In a premixed container, polysorbate-20, phenoxyethanol, 1,2-octanediol, ethylhexylglycerin, caprylic / capric triglyceride and (daily use) fragrance are mixed and stirred at 400 rpm for 5 minutes at room temperature to obtain phase C;

[0114] (4) Slowly add phase C to the main reactor of step (2), turn on the homogenizer and homogenize at 1500 rpm for 3 minutes; then add tea extract, stir evenly at 200 rpm, adjust the pH to 7.0 with citric acid solution, and filter through a 400 mesh filter to obtain the final product.

[0115] Example 4:

[0116] This embodiment provides a flawless moisturizing setting spray, the raw materials of which are composed of the following parts by weight: 2.94 parts of aloe vera leaf juice, 2.00 parts of 1,2-propanediol, 0.80 parts of 1,3-butanediol, 0.50 parts of glycerol, 0.10 parts of 1,2-pentanediol, 1.00 parts of polyvinylpyrrolidone, 0.53 parts of AMP salt of acrylate / allyl methacrylate copolymer, 0.40 parts of pullulan, 0.80 parts of polysorbate-20, 0.80 parts of phenoxyethanol, 0.20 parts of (daily use) fragrance, 0.07 parts of 1,2-octanediol, 0.03 parts of ethylhexylglycerin, 0.01 parts of caprylic / capric triglyceride, 0.01 parts of tea extract, and 89.81 parts of deionized water.

[0117] This setting spray includes the following preparation steps:

[0118] (1) Add the amount of deionized water in the formula to the main reactor, turn on the stirring to 300 rpm, and add 1,2-propanediol, 1,3-butanediol, glycerol, 1,2-pentanediol and aloe vera leaf juice in sequence. Heat to 42°C and stir at a constant temperature for 10 minutes until the mixture is uniform to obtain phase A.

[0119] (2) Keep the temperature at 42℃, maintain the stirring speed at 400rpm, slowly add pullulan polysaccharide, and stir for 25 minutes until completely dissolved; then increase the stirring speed to 1000rpm, add polyvinylpyrrolidone, and stir at a constant temperature for 20 minutes to disperse and dissolve it; stop heating, turn on the circulating water cooling, and when the temperature drops to 30℃, reduce the stirring speed to 300rpm, add acrylate / allyl methacrylate copolymer AMP salt, and stir for 10 minutes to obtain a mixture containing a ternary synergistic film-forming system;

[0120] (3) In a premixed container, polysorbate-20, phenoxyethanol, 1,2-octanediol, ethylhexylglycerin, caprylic / capric triglyceride and (daily use) fragrance are mixed and stirred at 500 rpm for 5 minutes at room temperature to obtain phase C;

[0121] (4) Slowly add phase C to the main reactor of step (2), turn on the homogenizer and homogenize at 1800 rpm for 4 minutes; then add tea extract, stir evenly at 300 rpm, adjust the pH to 6.5 with citric acid solution, and filter through a 400 mesh filter to obtain the final product.

[0122] Example 5:

[0123] This embodiment provides a flawless moisturizing setting spray, the raw materials of which are composed of the following parts by weight: 2.94 parts of aloe vera leaf juice, 2.00 parts of 1,2-propanediol, 0.80 parts of 1,3-butanediol, 0.50 parts of glycerol, 0.10 parts of 1,2-pentanediol, 0.80 parts of polyvinylpyrrolidone, 0.80 parts of AMP salt of acrylate / allyl methacrylate copolymer, 0.25 parts of pullulan, 0.80 parts of polysorbate-20, 0.80 parts of phenoxyethanol, 0.20 parts of (daily use) fragrance, 0.07 parts of 1,2-octanediol, 0.03 parts of ethylhexylglycerin, 0.01 parts of caprylic / capric triglyceride, 0.01 parts of tea extract, and 89.89 parts of deionized water.

[0124] This setting spray includes the following preparation steps:

[0125] (1) Add the amount of deionized water in the formula to the main reactor, turn on the stirring to 300 rpm, and add 1,2-propanediol, 1,3-butanediol, glycerol, 1,2-pentanediol and aloe vera leaf juice in sequence. Heat to 42°C and stir at a constant temperature for 10 minutes until the mixture is uniform to obtain phase A.

[0126] (2) Keep the temperature at 42℃, maintain the stirring speed at 400rpm, slowly add pullulan polysaccharide, and stir for 25 minutes until completely dissolved; then increase the stirring speed to 1000rpm, add polyvinylpyrrolidone, and stir at a constant temperature for 20 minutes to disperse and dissolve it; stop heating, turn on the circulating water cooling, and when the temperature drops to 30℃, reduce the stirring speed to 300rpm, add acrylate / allyl methacrylate copolymer AMP salt, and stir for 10 minutes to obtain a mixture containing a ternary synergistic film-forming system;

[0127] (3) In a premixed container, polysorbate-20, phenoxyethanol, 1,2-octanediol, ethylhexylglycerin, caprylic / capric triglyceride and (daily use) fragrance are mixed and stirred at 500 rpm for 5 minutes at room temperature to obtain phase C;

[0128] (4) Slowly add phase C to the main reactor of step (2), turn on the homogenizer and homogenize at 1800 rpm for 4 minutes; then add tea extract, stir evenly at 300 rpm, adjust the pH to 6.5 with citric acid solution, and filter through a 400 mesh filter to obtain the final product.

[0129] Comparative Examples 1-5:

[0130] Comparative Example 1:

[0131] Compared with Example 1, the difference is that pullulan is not included in the formula, and the missing weight percentage is made up by deionized water; in the preparation process, the operation of "slowly adding pullulan and stirring for 25 minutes until completely dissolved" in step (2) is omitted, and polyvinylpyrrolidone is directly added to dissolve after the A phase is heated to 42°C. The composition of other raw materials and preparation steps are the same.

[0132] Comparative Example 2:

[0133] Compared with Example 1, the difference is that the formulation does not contain acrylate / allyl methacrylate copolymer AMP salt, and the missing weight percentage is made up by deionized water; in the preparation process, the operation of adding the copolymer AMP salt after cooling in step (2) is omitted, and the other raw material composition and preparation steps are the same.

[0134] Comparative Example 3:

[0135] Compared with Example 1, the difference is that glycerol (glycerol) is used in the formula to replace pullulan polysaccharide in equal parts by weight, that is, the content of glycerol in the total formula is increased from 0.50% to 0.75%; in the preparation process, the operation of dissolving pullulan polysaccharide in step (2) is omitted, and the glycerol used as a substitute is added together with the other polyols in phase A in step (1), and the composition of the remaining raw materials and the preparation steps are the same.

[0136] Comparative Example 4:

[0137] Compared to Example 1, the difference lies in the preparation process, which employs a "one-pot" mixing method. Specifically, all aqueous phases and water-soluble raw materials (including water, various polyols, aloe vera juice, pullulan, PVP, AMP copolymer salt, and tea extract) except for the pH adjuster are added to the main reactor at once and stirred at room temperature (25°C) for 40 minutes until completely dissolved. All oily raw materials of phase C are premixed and added to the main reactor, and homogenized at 1800 rpm for 4 minutes. Finally, the pH is adjusted and the mixture is filtered. The types and amounts of raw materials in the formulation are exactly the same as in Example 1.

[0138] Comparative Example 5:

[0139] Compared with Example 1, the difference is that an equal part by weight of gum arabic is used to replace pullulan in the formulation, while the composition of other raw materials and preparation steps are the same.

[0140] Test Examples 1-2:

[0141] Test Example 1:

[0142] This test case aims to verify the physicochemical stability and process feasibility of the flawless moisturizing setting spray systems prepared in Examples 1 to 5.

[0143] Test instructions and methods:

[0144] The samples prepared in Examples 1 to 5 were selected as the test objects.

[0145] Place an appropriate amount of sample in a transparent glass colorimetric tube, observe the color, clarity, and presence of any suspended matter or sediment under natural light, and smell the odor.

[0146] The pH of the samples was measured at 25°C using a pH meter calibrated with standard buffer solution. Each sample was measured three times and the average value was taken.

[0147] The heat resistance stability test involves sealing the sample and placing it in a 45°C constant temperature chamber for 30 consecutive days. After the period, the sample is returned to room temperature to observe its physical state and the pH value is retested.

[0148] The cold resistance stability test involves placing the sample in a -5℃ environment for 24 hours, then removing it to restore it to room temperature, repeating the cycle 3 times, and observing whether there is turbidity, crystallization, or stratification.

[0149] For the centrifugation stability test, place 10 mL of sample in a centrifuge tube, centrifuge at 3000 rpm for 30 minutes, and observe the bottom sediment and liquid surface stratification.

[0150] Test results:

[0151] Experimental data (see Table 1):

[0152] Table 1

[0153] Sample number Initial appearance Initial pH value (25℃) Appearance after heat resistance test (45℃, 30d) pH change rate after heat resistance (%) Appearance after cold resistance test (-5℃, 3 cycles) Centrifugation stability (3000 rpm) Example 1 Colorless and transparent liquid 6.52 Clarified, no precipitation -0.0046 Clear, no crystallization No layering Example 2 Microemulsified liquid 6.08 Maintains microemulsion, without layering. -0.0065 Clear, no crystallization No layering Example 3 Colorless and transparent liquid 6.95 Clarified, no precipitation -0.0028 Clear, no crystallization No layering Example 4 Colorless and transparent liquid 6.48 Clarified, no precipitation -0.0031 Clear, no crystallization No layering Example 5 Colorless and transparent liquid 6.55 Clarified, no precipitation -0.0061 Clear, no crystallization No layering

[0154] in conclusion:

[0155] The samples from Examples 1 to 5 were all homogeneous liquids in appearance and centrifugation tests, without any stratification, demulsification, or precipitation. In Example 2, the total content of the polymeric film-forming agent was high, and it contained hydrophobic AMP salts. Despite this, it remained stable after centrifugation, indicating that the stepwise dissolution process preferentially hydrated pullulan to form a protective layer, preventing the subsequent aggregation of the added PVP and AMP copolymers. After heat and cold resistance tests, all samples showed no flocculation or turbidity changes in appearance. The pH fluctuation before and after the heat resistance test was less than 1%, indicating that no significant ester or amide bond hydrolysis occurred under slightly acidic to neutral conditions, and the chemical properties of the components were stable. Example 2 exhibited a microemulsion, while the other examples were transparent; combined with centrifugation data, all were stable systems. This formulation system and process can prepare stable dispersions that are resistant to temperature changes and mechanical shear.

[0156] Test Example 2:

[0157] This test case mainly examines the film-forming comfort (tightness), surface hydrophobicity, and anti-friction makeup-holding ability of each embodiment and comparative sample in practical applications, thereby verifying the technical effect of the ternary synergistic system.

[0158] Test instructions and methods:

[0159] Samples from Examples 1 to 5 and Comparative Examples 1 to 5 were selected for testing.

[0160] To evaluate the film-forming tightness, 20 subjects were selected. A quantitative sample was sprayed on each half of the face. After drying naturally for 3 minutes, facial expressions were performed. The skin pulling resistance was scored from 0 to 10, with 0 representing no feeling and 10 representing extreme tightness. The average value was calculated.

[0161] The surface hydrophobicity test was performed by spin coating the sample onto a glass slide using a spin coater, drying it at 35°C to form a film, and measuring the static contact angle of a deionized water droplet in contact with the film layer for 5 seconds using a contact angle meter.

[0162] The wet friction resistance test involves spraying a sample onto a biomimetic film coated with standard foundation and drying it into a film. A 200g weighted friction head is wrapped in a cotton cloth soaked in deionized water and rubbed back and forth 10 times. The color difference value ΔE on the surface of the cotton cloth before and after friction is measured. The larger the value, the more foundation is transferred.

[0163] Test results:

[0164] Experimental data (see Table 2):

[0165] Table 2

[0166] Sample number Film-forming tightness rating (0-10) Water contact angle (°) Color difference value due to wet rubbing (ΔE) Example 1 1.3 82.4 2.15 Example 2 2.8 88.6 1.84 Example 3 0.4 75.2 3.92 Example 4 0.9 79.8 2.41 Example 5 1.1 84.1 2.08 Comparative Example 1 6.8 65.3 4.76 Comparative Example 2 1.9 42.1 12.54 Comparative Example 3 2.2 45.8 10.32 Comparative Example 4 4.1 71.5 5.88 Comparative Example 5 5.2 76.2 4.13

[0167] in conclusion:

[0168] Example 1 had a tightness score of 1.3 and a wet rubbing color difference of 2.15, while Comparative Example 1 (without pullulan) had a tightness score of 6.8 and a color difference of 4.76.

[0169] Data comparison shows that the internal stress generated by PVP film formation is relatively large, and the film layer is hard, brittle and easy to break. After introducing pullulan polysaccharide, its steric hindrance effect interferes with the close packing of PVP segments, reduces crystallinity and internal stress, and improves the deformation resistance and color fixation of the film layer while eliminating the tightness.

[0170] The contact angles of Comparative Example 2 (without AMP copolymer) and Comparative Example 3 (glycerol-substituted polysaccharide) were both less than 50° and the color difference value was greater than 10, indicating that the lack of hydrophobic segments or the use of only small molecule moisturizers could not build a continuous water-resistant barrier, resulting in the rapid dissolution and collapse of the film layer upon contact with water.

[0171] Example 1 and Comparative Example 4 (one-pot method) have the same formulation but different processes. Comparative Example 4 has a higher tightness score and decreased abrasion resistance, indicating that the step-by-step assembly process affects the micro-arrangement of polymers. Disordered mixing failed to form an effective stress dissipation structure and surface hydrophobic orientation.

[0172] A specific ratio of ternary compounding combined with a step-by-step process resolves the contradiction between the tightness of the film-forming agent and its water resistance.

Claims

1. A flawless moisturizing setting spray, characterized in that, Made from the following ingredients in parts by weight: Aloe vera leaf juice: 1.00-5.00 parts; 1,2-Propanediol: 1.00-3.00 parts; 1,3-Butanediol: 0.50-1.50 parts; Glycerol: 0.20-1.00 parts; 1,2-Pentanediol: 0.05-0.50 parts; Polyvinylpyrrolidone: 0.50-2.00 parts; Acrylic ester / allyl methacrylate copolymer AMP salt: 0.30-1.00 parts; Pullulan: 0.10-0.50 parts; Polysorbate-20: 0.50-1.20 parts; Phenoxyethanol: 0.50-1.00 parts; Daily-use fragrance: 0.05-0.30 parts; 1,2-Octanediol: 0.05-0.10 parts; Ethylhexylglycerin: 0.01-0.05 parts; Caprylic / capric triglycerides: 0.005-0.05 parts; Tea extract: 0.005-0.05 parts; Deionized water: 80.00-96.00 parts.

2. The flawless moisturizing setting spray according to claim 1, characterized in that, The optimal values ​​for polyvinylpyrrolidone, pullulan, and phenoxyethanol respectively include: The weight parts of polyvinylpyrrolidone are 0.80-2.00 parts; The pullulan polysaccharide has a weight fraction of 0.25-0.50 parts; The weight parts of phenoxyethanol are 0.80-1.00 parts.

3. The flawless moisturizing setting spray according to claim 1, characterized in that, The weight ratio of the acrylate / allyl methacrylate copolymer AMP salt to pullulan is 2:1 to 6:

1.

4. The flawless moisturizing setting spray according to claim 1, characterized in that, The setting spray is a colorless, transparent liquid or a slightly opalescent liquid with a pH value of 6.0-7.

0.

5. The flawless moisturizing setting spray according to claim 1, characterized in that, The preparation steps of the setting spray are as follows: S1: Add the prescribed amount of deionized water to the main reactor, stir, and then add 1,2-propanediol, 1,3-butanediol, glycerol, 1,2-pentanediol and aloe vera leaf juice in sequence. Heat and mix evenly to obtain phase A. S2: Maintain the temperature of phase A, slowly add pullulan polysaccharide to phase A and stir until dissolved, then increase the stirring speed and add polyvinylpyrrolidone and stir until dissolved; stop heating and cool down, and after the temperature drops, reduce the stirring speed and add acrylate / allyl methacrylate copolymer AMP salt, and stir to obtain a mixture containing a ternary synergistic film-forming system; S3: Polysorbate-20, phenoxyethanol, 1,2-octanediol, ethylhexylglycerin, caprylic / capric triglyceride and daily fragrance are premixed and stirred to obtain phase C; S4: Add the C phase to the mixture obtained in step S2 for homogenization, then add tea extract and stir at low speed until the mixture is uniform. Adjust the pH value and filter to obtain a moisturizing and setting spray solution.

6. The flawless moisturizing setting spray according to claim 5, characterized in that, In step S1, the heating temperature is 40-45℃ and the stirring speed is 300-500 rpm; in step S2, the temperature of phase A is maintained at 40-45℃.

7. The flawless moisturizing setting spray according to claim 5, characterized in that, In step S2, the dissolution time of pullulan is 20-30 minutes; increasing the stirring speed means increasing the rotation speed to 800-1200 rpm, and the dissolution time of polyvinylpyrrolidone is 15-20 minutes; waiting for the temperature to decrease means lowering the temperature to 25-35℃; decreasing the stirring speed means reducing the rotation speed to 200-400 rpm.

8. The flawless moisturizing setting spray according to claim 5, characterized in that, In step S3, the premixing speed is 400-600 rpm and the time is 5-10 minutes.

9. The method for preparing the flawless moisturizing setting spray according to claim 5, characterized in that, In step S4, the stirring speed for homogenization is 1500-2000 rpm, and the homogenization time is 3-5 minutes.

10. The flawless moisturizing setting spray according to claim 5, characterized in that, The specific operation of step S4 is as follows: The C phase is slowly added to the mixture obtained in step S2 for homogenization. After homogenization, add tea extract and stir at a low speed of 200-400 rpm until well mixed. The pH was then adjusted to 6.0-7.0 using citric acid solution, and finally filtered through a 400-mesh filter to obtain the final product.