Cosmetic film-forming composition and application of cosmetic film-forming composition in makeup fixing products

Abstract

The invention belongs to the technical field of cosmetics, and particularly relates to a cosmetic film-forming composition and an application thereof in makeup fixing products. The VP / VA copolymer, polyesteride-5 and polyurethane-10 are used as film-forming compositions, a continuous network is firstly formed by virtue of a rigid framework of the VP / VA copolymer, the polyesteride-5 is used as a long-chain flexible hydrophobic polymer, molecular chains of the polyesteride-5 deeply permeate and are wound in the VP / VA network to form an interpenetrating structure, and a basic film layer is endowed with excellent adhesive force, flexibility and preliminary hydrophobicity; besides, the introduction of the polyurethane-10 can further improve the overall elasticity, rebound recovery capability and fatigue resistance of the film, so that the film layer is not easy to generate permanent cracks under dynamic facial expressions and can buffer external friction impact, and finally, the make-up product shows extreme environmental resistance, and the make-up effect is good. The water-resistant, sweat-resistant, friction-resistant, physical impact-resistant and other effects are obvious, and the fabric is more suitable for high-strength sports, rainstorm and other extreme scenes.

Description

Technical Field

[0001] This invention belongs to the field of cosmetic technology, and specifically relates to a cosmetic film-forming composition and its application in setting products. Background Technology

[0002] In recent years, consumers have gradually increased their demands for makeup longevity, especially in harsh environments such as sports, summer, and outdoor activities where sweating, high temperature, and high humidity are common. The limitations of traditional setting products have become increasingly apparent. For example, loose powder tends to clump when exposed to water and sweat, and the film-forming strength of ordinary setting sprays is insufficient to resist continuous sweating or rain splashes. There has long been a fundamental contradiction in setting products that is difficult to reconcile: the strength of the film-forming agent (makeup holding power) in the product and the flexibility / comfort of the film layer often go against each other.

[0003] The current mainstream solutions and their limitations are as follows: In single film-forming agent systems, high-strength acrylate polymer films (CN117815152A) are hard and brittle, with a tight feel against the skin, while soft polyurethane films lack staying power; simple binary compound systems, such as CN109260028A, which uses a low content of mixed polyurethane-35 and vinylpyrrolidone / vinyl acetate copolymer as a film-forming agent, have limited effects; in addition, although patent CN114432182A mentions adding polyester-5 and VP / VA to the film-forming agent, it only considers it as one of many options, and its core is to combine it with oil-controlling factors, without revealing and verifying the synergistic relationship and unique mechanism between any specific polymer combinations; furthermore, ultrafilms based on nanocellulose (CN118490559B) are not strong enough to withstand severe friction and sweat rinsing.

[0004] Therefore, the market urgently needs an innovative film-forming system that can break the aforementioned "performance seesaw" to construct an ideal protective film that combines high strength, high extensibility, high elasticity and resilience, and high hydrophobicity. This film can maintain the integrity of makeup even in extreme environments, and can easily cope with multiple challenges such as sweat, rain, and friction. At the same time, it can eliminate the shortcomings of traditional waterproof makeup setting products that are heavy and stuffy, so that users feel no burden and achieve a perfect unity of protection and comfort. Summary of the Invention

[0005] To address the above technical problems, the present invention provides a cosmetic film-forming composition and its application in setting products.

[0006] The technical solution of this invention is:

[0007] The first aspect of the present invention is to provide a cosmetic film-forming composition comprising polyester-5, PV / PA copolymer, and polyurethane-10 (PU-10), wherein the weight ratio of polyester-5:PV / PA copolymer:polyurethane-10 is (6~20):(4~10):(4~15).

[0008] Preferably, in the cosmetic film-forming composition, the weight ratio of polyester-5:PV / PA copolymer:polyurethane-10 is (12~15):(6~8):(4~10).

[0009] As a further preferred embodiment, in the cosmetic film-forming composition, the weight ratio of polyester-5:PV / PA copolymer:polyurethane-10 is 12~15:8:5.

[0010] Preferably, the polyurethane-10 is a low Tg (<25°C) aqueous dispersion, whose good film-forming properties and elasticity can be fully utilized at room temperature.

[0011] In the film-forming composition provided by this invention, polyester-5 is a flexible hydrophobic phase, VP / VA copolymer is a rigid hydrophilic skeleton, and polyurethane-10 is an elastomer. During film formation, these three components spontaneously form a unique interpenetrating / nested network structure. VP / VA, with its strong polarity and rapid film-forming properties, first forms a continuous, rigid three-dimensional network skeleton, providing immediate adhesion and anti-migration properties. The long-chain flexible hydrophobic structure of polyester-5 permeates and wraps around this skeleton, acting as a flexible filler, greatly improving the film's extensibility, skin-friendliness, and hydrophobicity, and imparting a dry feel. The soft and hard segment microphase separation structure of polyurethane-10 allows its molecular chains to deeply entangle with the networks of VP / VA and polyester-5, acting as "molecular springs" and "dynamic crosslinking points," providing the entire composite film with excellent elastic recovery, impact resistance, and dynamic crack resistance.

[0012] This composite structure, which combines rigidity, flexibility, and elasticity, results in a membrane that simultaneously possesses high strength and transparency, excellent flexibility, hydrophobicity and a smooth feel against the skin, superior elasticity, fatigue resistance, and good stability in the presence of sweat and oil.

[0013] A second aspect of the present invention is to provide a setting product comprising the cosmetic film-forming composition described above, wherein the cosmetic film-forming composition accounts for 15% to 35% of the weight of the setting product.

[0014] The inventors discovered that a continuous, dense, and fully functional film layer can only be formed when the cosmetic film-forming composition accounts for 15% to 35% of the weight of the setting product. This range is the golden ratio selected through extensive experimentation. Within this range, the functions of the three polymers achieve optimal complementarity and synergy, and the overall performance of the film reaches its peak.

[0015] Preferably, the makeup setting product also includes any one or a combination of several of the following: small molecule sodium hyaluronate, silica, cosmetically acceptable solvents, moisturizers, preservatives, and pH adjusters.

[0016] Preferably, the molecular weight of the small molecule sodium hyaluronate is 5~50 kDa.

[0017] Preferably, the molecular weight of the small molecule sodium hyaluronate is 8~10 kDa, and the small molecule sodium hyaluronate accounts for 1%~8% of the weight of the cosmetic film-forming composition.

[0018] This invention adds low molecular weight sodium hyaluronate to makeup setting products to achieve "external locking and internal moisturizing". The outer polymer film locks in water and sets makeup, while the inner low molecular weight moisturizer penetrates and replenishes moisture, synergistically improving makeup effect and skin feel.

[0019] Preferably, the makeup setting product includes any one of setting spray, setting lotion, primer, and foundation.

[0020] A third aspect of the present invention is to provide a more specific setting product, said setting product being a setting spray, which, by weight, comprises the following components:

[0021] Polyester-5 8~15 parts, PV / PA copolymer 6~8 parts, polyurethane-10 5~10 parts, sodium hyaluronate of 8~10 kDa 2~3 parts, organic solvent 18~20 parts, preservative 0.5 parts, deionized water 43.5~60.5 parts, and the pH of the setting spray is adjusted to 5.0±0.2 using lactic acid as a pH adjuster;

[0022] The organic solvent is either ethanol or butanediol, and the preservative is either phenoxyethanol or ethylhexylglycerin.

[0023] As a preferred embodiment, the present invention also provides a setting spray containing silica, which differs from the setting spray described above in that the setting spray containing silica has 1 to 2 parts by weight of silica added to the setting spray described above, and the silica is preferably nano-sized silica.

[0024] The present invention has the following advantages and effects compared with the prior art:

[0025] (1) In the cosmetic film-forming composition provided by the present invention, the three film-forming components achieve a good three-level synergistic effect. Among them, the VP / VA copolymer, as a rigid skeleton with high polarity and rapid film formation, first forms a continuous network. Polyester-5, as a long-chain flexible hydrophobic polymer, has its molecular chains deeply penetrated and wrapped in the VP / VA network to form an interpenetrating structure, giving the base film layer excellent adhesion, flexibility and preliminary hydrophobicity. In addition, the introduction of polyurethane-10 is a key leap. Its soft and hard segment microphase separation structure enables its molecular chains to act as "dynamic crosslinking agents" and "molecular springs". The entanglement with the aforementioned VP / VA / polyester-5 interpenetrating network further enhances the overall elasticity, resilience, and fatigue resistance of the membrane. This makes the membrane less prone to permanent cracking under dynamic facial expressions and can buffer external friction and impact, giving the membrane exceptional environmental resistance. It exhibits remarkable effects in water resistance, sweat resistance, friction resistance, and physical impact resistance, and can cope with extreme scenarios such as high-intensity sports and heavy rain. In addition, this film-forming composition has good compatibility in common water-alcohol systems, is easy to formulate, and can be widely used in various formulations such as sprays and emulsions.

[0026] (2) Based on the film-forming composition, the present invention adds low molecular weight sodium hyaluronate and / or nano silica to make a setting spray with setting effect. The addition of low molecular weight sodium hyaluronate is conducive to the membrane's penetration and water retention effect, thereby synergistically improving the makeup effect and skin feel. The addition of nano silica constitutes the final performance fortress of the setting product. The silica particles are uniformly dispersed and embedded in the polymer network, playing the role of nano reinforcing ribs and physical cross-linking points, which can improve the mechanical strength, hardness and wear resistance of the composite membrane. At the same time, the inherent hydrophobic properties of silica and its physical barrier effect on the polymer chain further improve the overall hydrophobicity and water permeability resistance of the membrane, enabling it to effectively resist the wetting and rinsing of liquid water such as sweat and rain.

[0027] (3) The makeup setting spray product provided by the present invention achieves super protection while the film layer is flexible, thin and breathable, without any stiffness, tightness or stuffiness, achieving a perfect balance between protective performance and comfortable experience. In addition, the matching "sandwich" spraying method is easy to operate and can greatly improve the upper limit of product performance.

[0028] (4) The makeup setting product system provided by the present invention has a performance far superior to any single component, binary or ternary composition, and completely breaks the traditional limitation that strong makeup holding power leads to poor skin feel. The film layer has both top-level makeup holding power (water-resistant, sweat-resistant, friction-resistant) and top-level comfort (soft, elastic, imperceptible, breathable). Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the present invention will now be further described in conjunction with specific embodiments.

[0030] Example 1

[0031] A setting spray, by weight, comprises the following components: 12 parts polyester-5, 8 parts VP / VA copolymer, 5 parts polyurethane-10 (40% solid content, the same below), 3 parts 8 kDa sodium hyaluronate, 20 parts ethanol, 0.5 parts phenoxyethanol, with the pH of the setting spray adjusted to 6.0 using lactic acid, and deionized water added to 100 parts.

[0032] The setting spray provided in this embodiment is prepared using the following steps:

[0033] Add ethanol and 2 / 3 of the deionized water to the main mixing vessel. Under medium speed (500 rpm) stirring, add VP / VA copolymer and polyester-5 in sequence, stirring until completely dissolved to form a transparent or slightly turbid solution. Then add polyurethane-10 aqueous dispersion to the system and continue stirring until the system is homogeneous. Dissolve small molecule sodium hyaluronate in a small amount of deionized water and add it to the system, stirring until completely dissolved. Finally, add the preservative phenoxyethanol, adjust the pH to 6.0 with lactic acid or sodium hydroxide solution, add deionized water to 100 parts, filter, and fill.

[0034] Example 2

[0035] A setting spray, differing from Example 1, is composed of the following components by weight: 10 parts polyester-5, 7 parts VP / VA copolymer, 7.5 parts polyurethane-10, 3 parts 8 kDa sodium hyaluronate, 20 parts ethanol, 0.5 parts phenoxyethanol, with lactic acid used to adjust the pH of the setting spray to 6.0, and deionized water added to 100 parts.

[0036] Example 3

[0037] A setting spray, differing from Example 1, is composed of the following components by weight: 8 parts polyester-5, 6 parts VP / VA copolymer, 10 parts polyurethane-10, 3 parts 8 kDa sodium hyaluronate, 20 parts ethanol, 0.5 parts phenoxyethanol, with lactic acid used to adjust the pH of the setting spray to 6.0, and deionized water added to 100 parts.

[0038] Example 4

[0039] A silica-containing setting spray differs from Example 1 in that 1.5 parts of nano-silica are added to the product of Example 1. The remaining components and their contents are the same as in Example 1. In this example, the spray is composed of the following components by weight: 12 parts of polyester-5, 8 parts of VP / VA copolymer, 5 parts of polyurethane-10, 3 parts of 8 kDa sodium hyaluronate, 20 parts of ethanol, 1.5 parts of nano-silica, and 0.5 parts of phenoxyethanol. Lactic acid is used to adjust the pH of the setting spray to 6.0, and deionized water is added to 100 parts.

[0040] The steps for preparing the setting spray in this embodiment are as follows:

[0041] First, add ethanol and 2 / 3 of the deionized water to the main mixing vessel. Under medium speed (500 rpm) stirring, add VP / VA copolymer and polyester-5 in sequence. After stirring until completely dissolved, slowly add polyurethane-10 dispersion. Stir again until homogeneous, then add silica to the system. Turn on the high-speed homogenizer (3000 rpm) and homogenize for 8 minutes until the system is homogeneous and there are no visible particle agglomerations. Add small molecule sodium hyaluronate pre-dissolved in a small amount of deionized water and stir until dissolved. Add the preservative phenoxyethanol and adjust the pH to 6.0 with lactic acid or sodium hydroxide solution. Add deionized water to 100 parts. Filter through a 200-mesh sieve and fill into an aerosol can to obtain the product.

[0042] Example 5

[0043] A silica-containing setting spray differs from Example 1 in that, by weight, it comprises the following components: 15 parts polyester-5, 8 parts VP / VA copolymer, 5 parts polyurethane-10, 3 parts 8 kDa sodium hyaluronate, 1.5 parts nano silica, 15 parts ethanol, 0.5 parts phenoxyethanol, with the pH adjusted to 5.0 using lactic acid, and deionized water added to 100 parts.

[0044] Example 6

[0045] A super-long-lasting makeup setting spray, which differs from Example 1 in that it is composed of the following ingredients by weight:

[0046] Polyester-5 10.0 parts, VP / VA copolymer 8.0 parts, polyurethane-10 7.5 parts, small molecule sodium hyaluronate (8kDa) 2.0 parts, ethanol: 25.0 parts, butanediol: 3.0 parts, preservative: 0.5 parts, pH adjuster: appropriate amount (adjust to pH 6.0), deionized water to 100 parts.

[0047] Example 7

[0048] A moisturizing and long-lasting makeup primer, which differs from Example 1 in that it is composed of the following ingredients by weight:

[0049] (Oil phase) 5 parts isononyl isononanoate, 1.5 parts emulsifier;

[0050] (Aqueous phase) Deionized water balance, polyester-5 6 parts, VP / VA polymer 4 parts, polyurethane-10 (40%) 10 parts, glycerol 3 parts;

[0051] (Added later) 2.0 parts of small molecule sodium hyaluronate, and appropriate amount of preservative.

[0052] Comparative Example 1

[0053] A setting spray, differing from Example 1, is composed of the following components by weight: 15 parts polyester-5, 10 parts VP / VA copolymer, 3 parts 8 kDa sodium hyaluronate, 20 parts ethanol, 0.5 parts phenoxyethanol, pH adjusted to 6.0 with lactic acid, and 100 parts deionized water.

[0054] Comparative Example 2

[0055] A setting spray, differing from Example 1, is composed of the following components by weight: 12 parts VP / VA copolymer, 12.5 parts polyurethane-10, 3 parts 8 kDa sodium hyaluronate, 20 parts ethanol, 0.5 parts phenoxyethanol, with the pH adjusted to 6.0 using lactic acid, and deionized water added to 100 parts.

[0056] Comparative Example 3

[0057] A setting spray, differing from Example 1, is composed of the following components by weight: 12 parts polyester-5, 5 parts polyurethane-10, 3 parts 8 kDa sodium hyaluronate, 20 parts ethanol, 0.5 parts phenoxyethanol, with the pH adjusted to 6.0 using lactic acid, and 100 parts deionized water.

[0058] Comparative Example 4

[0059] A setting spray, differing from Example 1, is composed of the following components by weight: 8 parts polyester-5, 8 parts VP / VA copolymer, 8 parts polyurethane-10, 3 parts 8 kDa sodium hyaluronate, 20 parts ethanol, 0.5 parts phenoxyethanol, with the pH adjusted to 6.0 using lactic acid, and deionized water added to 100 parts.

[0060] Comparative Example 5

[0061] A setting spray, differing from Example 1, is composed of the following components by weight: 17 parts polyester-5, 9 parts VP / VA copolymer, 6 parts polyurethane-10, 3 parts 8 kDa sodium hyaluronate, 15 parts ethanol, 0.5 parts phenoxyethanol, with the pH adjusted to 6.0 using lactic acid, and deionized water added to 100 parts.

[0062] Comparative Example 6

[0063] A silica-containing setting spray differs from Example 4 in that, by weight, it comprises the following components: 16 parts polyester-5, 10 parts VP / VA copolymer, 3 parts 8 kDa sodium hyaluronate, 2 parts silica, 15 parts ethanol, 0.5 parts phenoxyethanol, with the pH adjusted to 6.0 using lactic acid, and deionized water added to 100 parts.

[0064] Comparative Example 7

[0065] A silica-containing setting spray differs from Example 4 in that, by weight, it comprises the following components: 10 parts polyester-5, 15 parts VP / VA copolymer, 5 parts polyurethane-10, 3 parts 8 kDa sodium hyaluronate, 1.5 parts silica, 15 parts ethanol, 0.5 parts phenoxyethanol, with the pH adjusted to 6.0 using lactic acid, and deionized water added to 100 parts.

[0066] The compositional comparison of the setting spray products prepared in each embodiment and comparative example is shown in Tables 1-2 below.

[0067] Table 1 Comparison of the components of the setting spray products in each embodiment Components Example 1 Example 2 Example 3 Example 4 Example 5 Polyester - 5 parts 12 10 8 12 15 VP / VA copolymer / part 8 7 6 8 8 Polyurethane - 10 parts 5 7.5 10 5 5 Small molecule sodium hyaluronate / part 3 3 3 3 3 silica / part / / / 1.5 1.5 Ethanol (parts) 20 20 20 20 15 Weight ratio (Polyester-5:VP / VA:PU-10) 12:8:5 10:7:7.5 8:6:10 12:8:5 15:8:5

[0068] Table 2 Comparison of the components of setting spray products in each comparison example Components Comparative Example 1 (lacking PU-10) Comparative Example 2 (Polyester-5 missing) Comparative Example 3 (lacking VP / VA) Comparative Example 4 (Simple Mixture) Polyester - 5 parts 15 0 12 8 VP / VA copolymer / part 10 12 0 8 Polyurethane - 10 parts 0 12.5 5 8 Small molecule sodium hyaluronate / part 3 3 3 3 ethanol / part 20 20 20 20 Total polymer solids content / % 20% 20% Approximately 15% Approximately 20% Weight ratio (Polyester-5:VP / VA:PU-10) 15:10:0 0:12:12.5 12:0:5 3.2:3.2:3.2 Components Comparative Example 5 (Silica-deficient) Comparative Example 6 (lacking PU-10) Comparative Example 7 (Disproportionate) Polyester - 5 parts 17 16 10 VP / VA copolymer / part 9 10 15 Polyurethane - 10 parts 6 0 5 silica / part 0 2 1.5 Small molecule sodium hyaluronate / part 3 3 3 ethanol / part 15 15 15 Total polymer solids content / % Approximately 24% Approximately 24% Approximately 25% Weight ratio (Polyester-5:VP / VA:PU-10) 17:9:6 16:10:0 10:15:5

[0069] Application Example 1

[0070] Performance testing and results analysis of the makeup setting products provided in each embodiment and comparative example.

[0071] To achieve optimal results, the setting spray products in all embodiments and comparative examples of this invention employ the recommended "sandwich" method for setting makeup. The specific steps are as follows:

[0072] After completing your base makeup, shake the product well. Hold it 15-20 cm away from your face, close your eyes and lips, and spray the first layer of this invention's setting spray evenly in an "X" and "T" pattern to cover your entire face. Wait 30-60 seconds until the first layer feels dry. Repeat the same process to spray the second layer of setting spray evenly. Once it is completely dry, you will have a long-lasting makeup look with super water and sweat resistance.

[0073] 1. Makeup retention time test: 30 volunteers (combination / oily skin) were tested on half of their face. The activity was carried out in a constant temperature and humidity room (30℃, 70%RH). The time when the makeup appeared to be patchy or melted over an area of ​​more than 50% of the face was recorded.

[0074] 2. Dynamic crack resistance test: After the film is formed on the imitation leather material, the material is repeatedly bent (simulating facial expressions) 1000 times, and the cracks on the film surface are observed under a microscope and rated.

[0075] 3. Abrasion resistance test: A standard abrasion tester (500 g load, cotton cloth head) is used to rub the film-forming makeup surface for 20 cycles, and the color difference change (ΔE) is measured.

[0076] 4. Skin comfort rating: Volunteers conducted a blind test and rated the tightness, stuffiness, and elasticity of the test area at 2, 6, and 10 hours after makeup application (0-10 points, the higher the score, the more comfortable).

[0077] The performance test results of the makeup products provided in each embodiment and comparative example are shown in Table 3 and Table 4, respectively.

[0078] Table 3 Summary of test results for setting spray products in each embodiment Test Items Example 1 Example 2 Example 3 Example 4 Example 5 Average makeup wear time (h) 16.5 15.8 14.2 18.0 16.8 Dynamic crack resistance No cracks No cracks Fine lines No cracks No cracks Abrasion resistance (ΔE) 1.8 2.1 2.5 1.2 2.8 Area of ​​detachment / % <1 <2 <3 0 ＜1 Skin comfort level (average score over 10 hours) 9 8.8 8.5 8.8 8.8

[0079] Table 4 Summary of Test Results for Each Comparative Example Setting Spray Product Test Items Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Commercial Reference Average makeup wear time (h) 11 9.5 10.2 12.1 13.5 10.5 11.0 9 Dynamic crack resistance Local microcracks Severe reticular cracks flaking Obvious cracks Sparse, fine cracks appeared. Numerous network cracks appeared, and the film layer peeled off in some areas. Obvious long cracks appeared Untested Abrasion resistance (ΔE) 3.8 4.5 5.2 3.5 3.0 4.8 4.2 4 Area of ​​detachment / % 12 25 30 15 8 32 26 20 Skin comfort level (average score over 10 hours) 7.0 (Soft but collapsed) 4.0 (Extremely Tight) 6.5 (Slippery) 7.2 (Slightly stiff) 7.5 4.5 5.0 7.5

[0080] The results in Tables 3 and 4 show that the setting sprays in Examples 1 to 3 only added low molecular weight sodium hyaluronate to the film-forming composition, resulting in a high level of skin feel. Furthermore, no cracks appeared in the film within 10 hours, the makeup lasted for 14.2 to 16.5 hours, and the area of ​​makeup removal was <3%. In summary, this setting spray comprehensively and significantly outperformed all comparative examples and commercially available products in the four core indicators of makeup lasting time, dynamic crack resistance, abrasion resistance, and skin comfort. In particular, its dynamic crack resistance and long-lasting high comfort demonstrate the advantages of the ternary film-forming system in resolving fundamental contradictions.

[0081] In addition, in Examples 4 and 5, nano-silica was further added based on Examples 1 and 3, which further improved the abrasion resistance and water rinsing resistance of the setting spray product. The reason for the above phenomenon may be that the silica particles are uniformly dispersed and embedded in the polymer network, playing the role of "nano-reinforcing ribs" and "physical cross-linking points", which can improve the mechanical strength, hardness and wear resistance of the composite film. At the same time, the inherent hydrophobic properties of silica and its physical barrier effect on the polymer chain are beneficial to improving the overall hydrophobicity and water permeability resistance of the film.

[0082] The setting spray provided in Comparative Example 1 has adjusted the types of film-forming components based on Example 1. Due to the lack of polyurethane-10, its film texture is relatively soft, and its makeup holding power and resistance to dynamic cracking are insufficient. The makeup holding time can only be maintained for 11 hours, and local cracking is prone to occur. It can be seen that the elastic network of the film-forming component of the setting spray plays a key role in improving the makeup setting performance.

[0083] The setting spray containing the binary film-forming composition provided in Comparative Example 2 lacks polyester-5, resulting in a hard and brittle film with a poor skin feel and easy cracking, as well as severe makeup removal. This shows that the flexible component is indispensable for improving skin feel and toughness during the film-forming process.

[0084] Comparative Example 3, based on Example 1, did not add VP / VA polymer. The results showed that the film strength was low, the adhesion was poor, and the film peeled off in sheets, proving that the rigid skeleton is the basis for the high performance of the makeup film.

[0085] Although the setting spray provided in Comparative Example 4 contains three film-forming components, the three film-forming components are mixed in a simple ratio, which results in the failure to fully exert their synergistic effect, poor film-forming stability, and poor comfort. Furthermore, due to the low content of polyester-5, its molecular chains cannot be fully wrapped in the VP / VA network, and the adhesion, flexibility, and hydrophobicity of the film layer are also reduced simultaneously. Ultimately, the setting performance of the product is far inferior to that of the preferred embodiments 1 to 3 of this invention.

[0086] The above data fully demonstrates that the ternary film-forming system formed by polyester-5, VP / VA copolymer and polyurethane-10 in a specific ratio produces a synergistic effect of "1+1+1>3", successfully constructing a composite film with high strength, high flexibility and high elasticity, providing an innovative and efficient solution to solve the long-standing technical problems in the field of cosmetic film formation.

[0087] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of the patent. Without departing from the core concept of the present invention, namely, utilizing the ternary synergy of polyester-5, VP / VA, and polyurethane-10 to form a rigid-flexible-elastic integrated film, those skilled in the art can adjust the specific content, ratio, dosage form, and auxiliary components. All such adjustments should be considered to fall within the protection scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still be covered by the present invention.

Claims

1. A cosmetic film-forming composition, characterized in that, It is composed of polyester-5, PV / PA copolymer and polyurethane-10, and the weight ratio of polyester-5:PV / PA copolymer:polyurethane-10 is (6~20):(4~10):(4~15).

2. The cosmetic film-forming composition as described in claim 1, characterized in that, The weight ratio of polyester-5:PV / PA copolymer:polyurethane-10 is (12~15):(6~8):(4~10).

3. The cosmetic film-forming composition as described in claim 1, characterized in that, The weight ratio of polyester-5:PV / PA copolymer:polyurethane-10 is 12~15:8:

5.

4. A setting product comprising the cosmetic film-forming composition according to any one of claims 1 to 3, characterized in that, The cosmetic film-forming composition comprises 15% to 35% of the weight of the setting product.

5. The makeup setting product as described in claim 4, characterized in that, It also includes one or more of the following: small molecule sodium hyaluronate, silica, cosmetically acceptable solvents, humectants, preservatives, and pH adjusters.

6. The makeup setting product as described in claim 5, characterized in that, The molecular weight of the small molecule sodium hyaluronate is 5~50 kDa.

7. The makeup setting product as described in claim 5, characterized in that, The molecular weight of the small molecule sodium hyaluronate is 8~10 kDa, and the small molecule sodium hyaluronate accounts for 1%~8% of the weight of the cosmetic film-forming composition.

8. The makeup setting product as described in any one of claims 4 to 7, characterized in that, The makeup setting products mentioned include any one of setting spray, setting lotion, primer, and foundation.

9. A setting spray, characterized in that, By weight, it comprises the following components: Polyester-5 8~15 parts, PV / PA copolymer 6~8 parts, polyurethane-10 5~10 parts, sodium hyaluronate of 8~10 kDa 2~3 parts, organic solvent 18~20 parts, preservative 0.5 parts, using lactic acid as a pH adjuster to adjust the pH of the setting spray to 6.0±0.2, and deionized water to 100 parts; The organic solvent is either ethanol or butanediol, and the preservative is either phenoxyethanol or ethylhexylglycerin.

10. A silica-containing setting spray, characterized in that, It includes the setting spray of claim 9 and silica, wherein the silica is present in 1 to 2 parts by weight.