Propellant-type cosmetic composition having makeup-lasting power and spraying power

Abstract

To provide a spray type cosmetic composition comprising hydroxypropyl starch (HPS) and polyvinylpyrrolidone (PVP).SOLUTION: This disclosure provides a spray-type cosmetic composition for a makeup fixer, which comprises HPS and PVP and has excellent properties such as makeup-maintaining ability, spraying power and less stickiness at the same time.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cosmetic composition in a spray formulation that has excellent makeup staying power and sprayability. More particularly, the present invention relates to a fixer cosmetic composition used after applying makeup, and more particularly to a fixer cosmetic composition in a mist formulation.

[0002] This application claims priority based on Korean Patent Application No. 10-2020-0072572 filed on June 15, 2020, and Korean Patent Application No. 10-2020-0147056 filed on November 5, 2020, and the entire contents disclosed in the specifications and drawings of the relevant applications are incorporated herein by reference. [Background technology]

[0003] Film-forming agents used in cosmetics are mainly polymeric compounds that form flexible, long-lasting, and adhesive films on the surface of skin or hair.

[0004] Film formers can form films with different properties through various synthesis or reaction processes. Film formers are primarily used in tonal eye makeup cosmetics (Korean Patent Publication No. 10-2019-0002810), as well as in skincare products for wrinkle treatment (Korean Patent Registration No. 10-1714598) and peel-off packs (Korean Patent Registration No. 10-1716475). However, film formers have the disadvantage of becoming sticky and losing spray power as the amount used increases.

[0005] Meanwhile, among skincare products, mists are classified as leave-on cosmetics, which are sprayed onto the surface of the skin and remain on a wide area.

[0006] As such mist cosmetics, fixers that are used after applying color makeup to improve the staying power of makeup are commercially available.

[0007] Spray power and makeup retention are important factors for a makeup fixer, but it is difficult to achieve both, so research to solve these problems is needed. Summary of the Invention [Problem to be solved by the invention]

[0008] An object of the present invention is to provide a cosmetic composition in a spray formulation that is less sticky and has excellent makeup staying power (fixing power and / or durability) and spray power.

[0009] Another object of the present invention is to provide a cosmetic composition that is in a propellant form such as a mist and is used as a makeup fixer, and that has excellent makeup staying power and spray power. [Means for solving the problem]

[0010] The present inventors have attempted to develop a cosmetic composition in a spray formulation that contains a film-forming agent but is less sticky and has excellent sprayability in order to improve the fixation and durability of makeup. To achieve this, the composition was prepared using polyvinylpyrrolidone, which has excellent adhesive strength. Polyvinylpyrrolidone has the advantage of providing superior makeup retention compared to other film-forming agents. However, as the amount of polyvinylpyrrolidone increases to improve makeup retention and retention, the composition becomes sticky and sprayability decreases.

[0011] To solve these problems associated with polyvinylpyrrolidone, the inventors of the present invention added various starch materials to the composition. Starch refers to a starch polymer. Starch is an amphiphilic substance that simultaneously absorbs water and oil and has film-forming properties. Starch includes hydroxypropyl starch phosphate, acetylated corn starch, acetylated rice starch, etc., which have undergone various modifications or synthesis processes to enhance their dissolving power.

[0012] The inventors have confirmed that when hydroxypropyl starch (HPS), among starch substances, is contained in a fixer composition together with polyvinylpyrrolidone (PVP), the advantages of polyvinylpyrrolidone are maintained (i.e., the fixation power and durability of makeup are maintained), while the disadvantages of polyvinylpyrrolidone, namely, the decrease in spray power is slight and there is no stickiness.

[0013] Not all starch materials have the above effect, and only hydroxypropyl starch was suitable for the intended purpose. In particular, when conventional unmodified starch and modified starch were used instead of hydroxypropyl starch, poor results were observed in terms of the sedimentation stability of the dosage form.

[0014] That is, the inventors of the present invention have overcome the limitations of poor makeup staying power, poor mist spray power, and stickiness that occur when polyvinylpyrrolidone and hydroxypropyl starch are used alone by combining polyvinylpyrrolidone and hydroxypropyl starch. That is, the present disclosure has confirmed that it is possible to maintain both the makeup staying power and staying power of polyvinylpyrrolidone and the spray power and low stickiness of hydroxypropyl starch (without negatively affecting each other), thereby completing the present invention.

[0015] One aspect of the present disclosure provides a cosmetic composition in a spray formulation, which includes hydroxypropyl starch and polyvinylpyrrolidone and is used after applying makeup. That is, the cosmetic composition in a spray formulation according to the present disclosure can be sprayed onto makeup after it has been applied. In one desirable embodiment of the present disclosure, the composition according to one embodiment of the present disclosure is used as a makeup fixer, which has excellent makeup staying power and sprayability.

[0016] The spray-form cosmetic composition according to the present disclosure contains hydroxypropyl starch. In the present invention, hydroxypropyl starch is preferred because it has excellent film-forming ability, high dispersion stability, and good formulation stability. On the other hand, among commonly used starches, unmodified starches (e.g., corn starch) may be undesirable in liquid formulations due to their low dispersion retention ability. In addition, modified starches other than hydroxypropyl starch may be undesirable in terms of the precipitation stability of the formulation.

[0017] In one embodiment of the present disclosure, the hydroxypropyl starch is contained in an amount of 0.1 to 5 wt %, preferably 0.3 to 2 wt %, based on the total weight of the composition.

[0018] The cosmetic composition in propellant form according to the present disclosure comprises polyvinylpyrrolidone, which may be a polymer of N-vinyl-2-pyrrolidone.

[0019] Preferably, the polyvinylpyrrolidone according to the present disclosure has a weight-average molecular weight of 1,000 to 5,000,000 g / mol, and more preferably, has a weight-average molecular weight of 40,000 to 80,000 g / mol.

[0020] In one embodiment of the present disclosure, the polyvinylpyrrolidone may be, for example, PVP K-30 manufactured by Ashland Corporation.

[0021] In one embodiment of the present disclosure, the polyvinylpyrrolidone is contained in an amount of 0.1 to 5 wt %, preferably 0.5 to 4 wt %, based on the total weight of the composition.

[0022] In one embodiment of the present disclosure, the hydroxypropyl starch is contained in an amount of 0.1 to 5 wt % relative to the total weight of the composition, and the polyvinylpyrrolidone is contained in an amount of 0.1 to 5 wt % relative to the total weight of the composition.

[0023] In one embodiment of the present disclosure, the composition according to the present invention comprises hydroxypropyl starch and polyvinylpyrrolidone in a weight ratio of 0.1:1 to 10:1 (hydroxypropyl starch:polyvinylpyrrolidone), preferably in a weight ratio of 1:1 to 1:6.

[0024] In the present disclosure, the term "propellant dosage form" may refer to a dosage form such as, but is not limited to, an aerosol, a mist, or a spray. Preferably, the propellant dosage form in the present disclosure may be a mist dosage form. That is, the composition according to the present disclosure may be applied to the skin in the form of a spray, an aerosol, or a mist, preferably in the form of a mist.

[0025] In one aspect of the present disclosure, the composition according to the present disclosure further comprises a surfactant, which aids in solubilizing other components included in the composition.

[0026] The surfactant contained in the spray-form cosmetic composition according to one embodiment of the present disclosure may include, but is not limited to, polysorbate 20 (Tween 20), sorbitan isostearate, sorbitan stearate, PEG (Polyethylene glycol)-40 hydrogenated castor oil, PEG-60 hydrogenated castor oil, etc.

[0027] In one embodiment of the present disclosure, the surfactant is contained in an amount of, for example, 0.1 to 5 wt %, more preferably 0.5 to 3 wt %, relative to the total weight of the composition.

[0028] The spray-form cosmetic composition according to the present disclosure may further comprise a solvent or drying speed-increasing agent. Examples of such solvents or drying speed-increasing agents include, but are not limited to, purified water, ethanol, or a mixture thereof. In a preferred embodiment of the present disclosure, the solvent or drying speed-increasing agent according to the present disclosure is a mixture of purified water and ethanol, of which ethanol may be included in an amount of 1 to 20 wt %, more preferably 5 to 15 wt %, based on the total weight of the composition. The purified water constitutes the balance excluding the aforementioned components and the optional components described below.

[0029] In the present disclosure, the cosmetic composition in spray form according to the present disclosure may further contain, in addition to the above-mentioned components, all kinds of additives that can be used in ordinary cosmetics, such as preservatives, fragrances, antioxidants, moisturizers, dispersants, pH adjusters, astringents, pigments, etc. These are readily available commercially.

[0030] The preservatives contained in the cosmetic composition in spray form according to the present disclosure may include, but are not limited to, penoxyethanol, methylparaben, ethylparaben, propylparaben, butylparaben, benzyl alcohol, sodium benzoate, etc.

[0031] In another aspect of the present disclosure, the cosmetic composition in spray form according to the present disclosure comprises, relative to the total weight of the composition, 0.1 to 5 wt % of hydroxypropyl starch; 0.1 to 5 wt % of polyvinylpyrrolidone; 0.1 to 5 wt % of a preservative, surfactant, fragrance, or mixture thereof; and the balance being a solvent or drying speed enhancer.

[0032] The present disclosure also relates to a cosmetic use (method) of the cosmetic composition according to the present disclosure.

[0033] That is, another aspect of the present disclosure provides a method for fixing or maintaining makeup, the method comprising spraying a cosmetic composition in a propellant form, the cosmetic composition including hydroxypropyl starch and polyvinylpyrrolidone, onto a subject in need of makeup maintenance.

[0034] The cosmetic composition used in the method of the present disclosure is the cosmetic composition of the present disclosure described above.

[0035] Preferably, all ingredients described in the present invention do not exceed the maximum use values ​​specified in the relevant laws, regulations, and standards of Korea, China, the United States, Europe, Japan, etc. (e.g., Regulations Concerning Cosmetic Safety Standards (Korea), Cosmetic Safety Technical Standards (China), and Hygiene Standards (China)). That is, preferably, the cosmetic or personal care composition according to the present invention contains the ingredients according to the present invention in the amount permitted by the relevant laws, regulations, and standards of each country. [Effects of the Invention]

[0036] The present disclosure provides a spray-type cosmetic composition that exhibits excellent makeup staying power and spray strength. More specifically, the spray-type cosmetic composition of the present disclosure combines hydroxypropyl starch with polyvinylpyrrolidone to increase makeup staying power while preventing a decrease in spray angle as the content of polyvinylpyrrolidone increases. This combination not only further improves makeup staying power, but also minimizes a decrease in spray angle. [Brief explanation of the drawings]

[0037] [Figure 1] FIG. 1 is a graph showing the rate of change in the standard deviation of hue in Examples 1 to 4 and Comparative Examples 1 to 6. [Figure 2] 1 is a graph showing mist spray angles in Examples 1 to 4 and Comparative Examples 1 to 6. [Figure 3] The results of the presence or absence of precipitation in Example 4 and Comparative Examples 7 to 10 are shown below. DETAILED DESCRIPTION OF THE INVENTION

[0038] The present invention will be described below with reference to specific examples. However, the examples according to the present invention can be modified into many other forms, and the scope of the present invention should not be construed as being limited to the examples described below. The examples of the present invention are provided to more completely explain the present invention to those skilled in the art.

[0039] Preparation Example 1: Preparation of a cosmetic composition in spray form Polyvinylpyrrolidone and hydroxypropyl starch were added to the aqueous phase in the dispersion process to solubilize the perfume, thereby preparing cosmetic compositions in spray form (Examples 1 to 4).

[0040] For comparison, a spray-form cosmetic composition not containing hydroxypropyl starch and polyvinylpyrrolidone (Comparative Example 1), spray-form cosmetic compositions not containing hydroxypropyl starch (Comparative Examples 2 to 4), and spray-form cosmetic compositions not containing polyvinylpyrrolidone (Comparative Examples 5 and 6) were prepared using the same process.

[0041] Experimental Method 1) After raw material 1 (purified water) was heated to 60°C, raw materials 2 and 3 were gradually added, and the mixture was dispersed using a Disper for 30 minutes. 2) Raw materials 5 to 9 were added to raw material 4 and completely dissolved at 50°C. 3) The product from item 2) was slowly added to the product from item 1) with a dropper while mixing at 150 RPM for 10 minutes.

[0042] [Table 1]

[0043] In Table 1, the polyvinylpyrrolidone used was PVP K-30 (molecular weight 40,000 to 80,000 g / mol) manufactured by Ashland Co., Ltd. The same raw materials were used in the other production examples below.

[0044] Experimental Example 1: Evaluation of makeup staying power The makeup staying power was evaluated for the compositions of Comparative Examples 1 to 6 and Examples 1 to 4. The makeup staying power on the skin surface was compared by measuring the rate of change in the standard deviation of hue, which is a measure of uniformity, after a certain period of time.

[0045] Experimental Method 1) After applying a general-purpose foundation evenly to the surface of the skin, a mist pump containing a cosmetic composition in a spray formulation was placed 15 cm away from the surface of the skin. 2) The same amount (0.3g) was sprayed evenly onto half of the face three times. 3) After 10 minutes, the pixel hue standard deviations on the left and right sides of the face photographed using a facial photography analysis system were measured. 4) Four hours later, the pixel hue standard deviations on the left and right sides of the face photographed using the facial photography analysis system were measured. 5) The rate of change in the standard deviation of hue was calculated using a formula and compared. (Rate of change = (Standard deviation of hue after 4 hours - Standard deviation of hue after 10 minutes) / Standard deviation of hue after 10 minutes)

[0046] The results are shown in Figure 1. The smaller the standard hue deviation rate per unit area, the more uniformly the makeup was maintained. Looking at the chart of the change rate of standard hue deviation for Comparative Examples 2 to 4, it was confirmed that the higher the PVP content, the smaller the change rate of standard hue deviation, thereby improving makeup staying power. Looking at the chart of the difference change rate of standard hue deviation for Comparative Examples 5 and 6, it was confirmed that the inclusion of HPS resulted in an increase in the change rate of standard hue deviation, thereby reducing makeup staying power. Examples 2 to 4, which contained both PVP and HPS, had a smaller change rate of standard hue deviation than Comparative Examples 1 to 6, thereby improving makeup staying power.

[0047] In conclusion, when PVP and HPS were used together, a lower change rate in the standard deviation of color was observed compared to when PVP or HPS was used alone, confirming that makeup staying power was improved.

[0048] Experimental example 2: Evaluation of mist spraying ability The mist spraying ability was evaluated for the compositions of Comparative Examples 1 to 6 and Examples 1 to 4. The mist spraying ability was compared relatively by measuring the spray angle.

[0049] Experimental Method 1) A makeup fixing cosmetic composition was filled into a general-purpose mist pump container, and then the spray image was photographed to measure the spray angle.

[0050] The results are shown in Figure 2. Looking at the spray angle charts for Comparative Examples 2 to 4, it was confirmed that the spray angle decreased as the PVP content increased, resulting in a decrease in fine spray performance. Looking at the spray angle charts for Comparative Examples 5 and 6, it was confirmed that fine spray performance was maintained regardless of the HPS content. It was confirmed that Examples 1 to 4, which contained both PVP and HPS, had a higher spray angle than Comparative Examples 3 and 4, which did not contain PVP, resulting in a higher fine spray performance.

[0051] In conclusion, when HPS and PVP were used in combination, the spray angle was smaller than when PVP was used alone at 1 wt%. However, when HPS and PVP were used in combination, the spray angle was better than when PVP was used at 2 wt%. In particular, when HPS and PVP were used in combination, it was confirmed that a spray angle of approximately 70° could be achieved, which is equivalent to what consumers can experience.

[0052] However, although Example 4 had a slightly smaller spray angle than Example 3, it was superior in quality in terms of dosage form stability and feel when used.

[0053] Experimental Example 3: Evaluation of stability over time The temporal stability was evaluated for the compositions of Examples 1 to 4. The temporal stability was confirmed using precipitation and redispersion as a measure.

[0054] Experimental Method 1) The cosmetic composition in spray form was frozen at a low temperature (-20°C) for 3 days, and then melted and re-dispersed. 2) The above process was repeated five times and the precipitation and redispersibility were visually confirmed. The results are shown in Table 2. It was confirmed that Examples 1 to 3, which contained 1 wt % HPS, had a relatively lower degree of redispersion than Example 4, which contained 0.5 wt % HPS.

[0055] In conclusion, it was confirmed that the lower the HPS content, the higher the redispersibility.

[0056] [Table 2]

[0057] Preparation Example 2: Preparation of a cosmetic composition in spray form For comparison, spray-type cosmetic compositions containing each of the four types of unmodified and modified starches excluding hydroxypropyl starch (Comparative Examples 7 to 10) were prepared in the same manner as in Preparation Example 1.

[0058] Experimental Method 1) After raw material 1 (purified water) was heated to 60°C, raw materials 2 to 7 were gradually added and dispersed with a disperser for 30 minutes. 2) Raw materials 9 to 13 were added to raw material 8 and completely dissolved at 50°C. 3) The product from item 2) was slowly added to the product from item 1) with a dropper while mixing at 150 RPM for 10 minutes.

[0059] [Table 3]

[0060] Experimental Example 4: Evaluation of starch stability 100 mL of the prepared Comparative Example and Example solutions was left at room temperature for 48 hours, and the presence or absence of precipitation was confirmed.

[0061] As a result, it was confirmed that the four types of unmodified and modified starches other than hydroxypropyl starch had poor dispersion stability due to the occurrence of precipitation (Table 4 and FIG. 3).

[0062] [Table 4]

Claims

1. Contains hydroxypropyl starch and polyvinylpyrrolidone, The content of the hydroxypropyl starch is 0.1 to 2% by weight based on the total weight of the composition; The content of the polyvinylpyrrolidone is 2 to 5% by weight based on the total weight of the composition; A cosmetic composition in the form of a spray formulation, which is used after applying a makeup cosmetic.

2. 10. The cosmetic composition in a spray formulation according to claim 1, wherein the composition is used as a makeup fixer having excellent makeup staying power and spraying power.

3. The cosmetic composition in a propellant form according to claim 1 or 2, wherein the composition is applied to the skin in the form of a spray, aerosol or mist.

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