High-viscosity cosmetics composition having self-healing ability

Abstract

The present invention relates to a high-viscosity cosmetics composition having self-healing ability. The cosmetics composition of the present invention comprises a component having shear-thinning properties to maintain a cream phase while having high viscosity, thus being a good moisturizer and easy to spray, and having formulation stability.

Description

High-viscosity cosmetic composition having self-restoring properties

[0001] This patent application claims priority to Korean Patent Application No. 10-2024-0162676, filed with the Intellectual Property Office of the Republic of Korea on November 15, 2024, the disclosures of said patent application are incorporated herein by reference.

[0002] The present invention relates to a high-viscosity cosmetic composition having self-restoring properties, and more specifically, to a cosmetic composition having high viscosity while maintaining a cream-like consistency, and having excellent sprayability, moisturizing power, and formulation stability.

[0003] Cosmetic compositions have been developed in various forms to provide aesthetic and moisturizing functions to the skin. In particular, high-viscosity compositions with self-healing properties can satisfy diverse user needs through their unique physical characteristics. Recently, these high-viscosity compositions are being developed beyond simple manual application into sprayable products. This spray form further expands the utility of the compositions by offering convenience of use, uniform application, and hygienic usability.

[0004] However, high-viscosity cosmetic compositions are generally difficult to use in spray form. When sprayed, high-viscosity compositions can cause problems such as nozzle clogging, uneven spray coverage, and insufficient spray pressure resulting in improper atomization. Some currently commercialized technologies employ methods to reduce viscosity by using large amounts of chemical additives or highly specialized spray devices. However, these methods may degrade the inherent function of the composition or fail to strike the balance between viscosity and sprayability desired by the user. Furthermore, compositions containing large amounts of chemical additives can cause skin irritation, potentially having a negative impact on the user's skin health.

[0005] Therefore, there is a need for technological development to improve the physical properties of the composition so that smooth spraying is possible even in high viscosity conditions.

[0006] The objective of the present invention is to provide a high-viscosity cosmetic composition having self-restoring properties.

[0007] The objective of the present invention is to provide a high-viscosity cosmetic composition having self-restoring properties. In this case, the cosmetic composition of the present invention may include an ingredient having shear-thinning properties, thereby maintaining a creamy state while having high viscosity, and may possess excellent moisturizing power, formulation stability, and sprayability. Shear thinning refers to the characteristic in which the viscosity of a substance decreases when subjected to an external force, and returns to its original high viscosity when the force is removed. A high-viscosity cosmetic utilizing this property can provide the function of acting as a low viscosity when sprayed to facilitate easy dispensing, and returning to a high viscosity upon application to the skin to maintain the formulation well.

[0008] The present invention will be described in more detail below.

[0009] One aspect of the present invention relates to a cosmetic composition comprising a thickening agent selected from the group consisting of ammonium polyacryloyldimethyl taurate, acrylic acid / VP crosspolymer, and acrylates / Beheneth-25 methacrylate copolymer.

[0010] In the present invention, the thickening agent comprises 0.1 to 2 weight%, 0.1 to 1.8 weight%, 0.1 to 1.6 weight%, 0.1 to 1.5 weight%, 0.1 to 1.3 weight%, and 0.1 to 1 weight% based on the total composition.

[0011] 0.3 to 0.6 wt%, 0.3 to 0.55 wt%, 0.3 to 0.5 wt%, 0.35 to 0.6 wt%, 0.35 to 0.55 wt%, 0.35 to 0.5 wt%, 0.4 to 0.6 wt%, 0.4 to 0.55 wt%, 0.4 to 0.5 wt%,

[0012] It may include, but is not limited to, 0.1 to 0.5 wt%, 0.1 to 0.45 wt%, 0.1 to 0.4 wt%, 0.15 to 0.5 wt%, 0.15 to 0.45 wt%, 0.15 to 0.4 wt%, 0.3 to 0.5 wt%, 0.3 to 0.45 wt%, and 0.3 to 0.4 wt%.

[0013] The above-mentioned thickener has shear-thinning properties, and the cosmetic composition containing the above-mentioned thickener acts as a low viscosity when sprayed so that it is easily sprayed, and returns to a high viscosity when applied to the skin, thereby providing a function that maintains the formulation well.

[0014] When the cosmetic composition according to the present invention contains about 0.1% by weight or more and less than 2% by weight of a thickener, it exhibits shear thinning behavior in which the viscosity gradually decreases with increasing shear rate.

[0015] That is, within the content range of the present invention, viscosity is instantaneously reduced when external shear is applied, making spraying or application easy, and viscosity is restored after the shear is stopped, thereby simultaneously ensuring the stability and adhesion of the formulation.

[0016] On the other hand, when the content of the thickener is less than 0.1% by weight, such shear thinning behavior is not observed, and physical stability is reduced, such as the oil phase separating into the upper layer. When the content is increased to 2% by weight or more, although the formulation does not differ significantly from the formulation of the present invention, there are problems such as a narrow spray angle and uneven spraying due to increased viscosity. Therefore, the thickener content range of the present invention (0.1% by weight or more and less than 2% by weight) corresponds to the optimal range for simultaneously securing a balance of self-restoring power and sprayability.

[0017] In the present invention, the cosmetic composition has a viscosity of 1,000 cP to 50,000 cP, 1,000 cP to 48,000 cP, 1,000 cP to 46,000 cP, 1,000 cP to 45,000 cP, 5,000 cP to 50,000 cP, 5,000 cP to 48,000 cP, 5,000 cP to 46,000 cP, 5,000 cP to 45,000 cP, 10,000 cP to 50,000 cP, 10,000 cP to 48,000 cP, 10,000 cP to 46,000 cP, 10,000 cP to 45,000 cP, 15,000 cP to 50,000 cP, 15,000 cP to 48,000 cP, 15,000 cP to 46,000 cP, 15,000 cP to 45,000 cP, 25,000 cP to 50,000 cP, 25,000 cP to 48,000 cP, 25,000 cP to 46,000 cP, 25,000 cP to 45,000 cP, 35,000 cP to 50,000 cP, 35,000 cP to 48,000 cP, 35,000 cP to 46,000 cP, 35,000 cP to 45,000 cP, 40,000 cP to 50,000 cP, 40,000 cP to 48,000 cP, 40,000 cP to 46,000 cP, 40,000 cP to 45,000 cP, for example, 44,100 cP, but is not limited thereto.

[0018] In the present invention, the cosmetic composition may further include an emulsifier, a polyol, an oil, a preservative, and a neutralizing agent, but is not limited thereto.

[0019] In the present invention, the emulsifier may comprise one or more selected from the group consisting of C12-16 alcohol, hydrogenated lecithin, cetyl alcohol, stearic acid, glyceryl caprylate, and glyceryl stearate SE, but is not limited thereto.

[0020] In the present invention, the emulsifier may be included in an amount of 0.2 to 2 weight%, 0.2 to 1.8 weight%, 0.2 to 1.5 weight%, 0.25 to 2 weight%, 0.25 to 1.8 weight%, 0.25 to 1.5 weight%, for example, 0.25 or 1.2 weight% relative to the total composition, but is not limited thereto.

[0021] In the present invention, the polyol may comprise one or more selected from the group consisting of glycerin, diglycerin, butylene glycol, 1,2-hexanediol, phenylene glycol, ethylhexylglycerin, polyglycerin, ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, propanediol, D-panthenol, and octanediol, but is not limited thereto.

[0022] In the present invention, the polyol may be included in an amount of 3 to 15 weight%, 3 to 14 weight%, 3 to 13 weight%, 3 to 12 weight%, 5 to 15 weight%, 5 to 14 weight%, 5 to 13 weight%, 5 to 12 weight%, for example, 5 or 12 weight% relative to the total composition, but is not limited thereto.

[0023] In the present invention, the oil may comprise one or more selected from the group consisting of ethylhexyl palmitate, dicapryl carbonate, cyclopentasiloxane, butylene glycol dicaprylate, dicarrylyl carbonate, hydrogenated polydecene, synthetic oil, olive oil, camellia oil, sasanqua oil, apricot oil, sesame oil, macadamia seed oil, and plant-derived oil, but is not limited thereto.

[0024] In the present invention, the oil may be included in an amount of 2 to 15 weight%, 2 to 12 weight%, 2 to 10 weight%, 2 to 9 weight%, 3 to 15 weight%, 3 to 12 weight%, 3 to 10 weight%, 3 to 9 weight%, 3.5 to 15 weight%, 3.5 to 12 weight%, 3.5 to 10 weight%, 3.5 to 9 weight%, for example, 3.5 or 10 weight%, but is not limited thereto.

[0025] In the present invention, the preservative may comprise one or more selected from the group consisting of 1,2-hexanediol, benzyl alcohol, chlorphenesin, benzoic acid, sorbic acid, dihydroacetic acid, methylchloroisothiazole, methylisothiazolinone, imidazolidinyl urea, triclosan, and hydroxyacetophenone, but is not limited thereto.

[0026] In the present invention, the preservative may be included in an amount of 0.3 to 2 weight%, 0.3 to 1.8 weight%, 0.3 to 1.6 weight%, 0.3 to 1.5 weight%, 0.5 to 2 weight%, 0.5 to 1.8 weight%, 0.5 to 1.6 weight%, 0.5 to 1.5 weight%, 0.6 to 2 weight%, 0.6 to 1.8 weight%, 0.6 to 1.6 weight%, 0.6 to 1.5 weight%, for example, 0.6 or 1.5 weight% based on the total composition, but is not limited thereto.

[0027] In the present invention, the neutralizing agent may comprise one or more selected from the group consisting of tromethamine, arginine, potassium hydroxide, sodium hydroxide, triethanolamine and aminomethylpropanediol, L-arginine, sodium hydroxide and sodium citrate, but is not limited thereto.

[0028] In the present invention, the neutralizing agent may be included in an amount of 0.05 to 1 wt%, 0.05 to 0.8 wt%, 0.05 to 0.6 wt%, 0.05 to 0.4 wt%, 0.05 to 0.35 wt%, 0.08 to 1 wt%, 0.08 to 0.8 wt%, 0.08 to 0.6 wt%, 0.08 to 0.4 wt%, 0.08 to 0.35 wt%, 0.1 to 1 wt%, 0.1 to 0.8 wt%, 0.1 to 0.6 wt%, 0.1 to 0.4 wt%, and 0.1 to 0.35 wt% relative to the total composition, but is not limited thereto.

[0029] In the present invention, the formulation of the cosmetic composition may be of the oil-in-water (O / W) type, but is not limited thereto.

[0030] In the present invention, the cosmetic composition may further include one or more additives selected from the group consisting of pigments, preservatives, and fragrances, but is not limited thereto.

[0031] In the present invention, the cosmetic composition may further include functional additives and ingredients included in general cosmetic compositions, but is not limited thereto. The functional additives may include one or more selected from the group consisting of hyaluronic acid, collagen, peptide, vitamin C, high molecular weight polysaccharide, aloe vera, propolis extract, madecassoside, vitamin B3, and squalane.

[0032] In the present invention, the pH of the aqueous phase water is not limited.

[0033] In the present invention, the cosmetic composition may be used in facial products, may be for moisturizing or cosmetic purposes, and may be a sprayable mist cosmetic composition, but is not limited thereto.

[0034] In the present invention, the formulation of the cosmetic composition is not particularly limited and can be appropriately selected according to the purpose. For example, it may be manufactured in the form of a skin lotion, skin softener, skin toner, lotion, moisture lotion, massage cream, nourishing lotion, nourishing cream, hand cream, foundation, essence, nourishing essence, body lotion, body cream, bio-oil, body essence, etc.

[0035] Another aspect of the present invention relates to a skin makeup method comprising the following steps:

[0036] A step of applying the cosmetic composition according to the present invention to the skin.

[0037] Throughout this specification, materials, methods, and embodiments are merely illustrative and do not limit the invention. To enable the practice of various embodiments of the invention, descriptions of specific terms are provided:

[0038] [Term]

[0039] The term “viscosity” as used in this specification refers to a physical property indicating the fluidity of a composition, signifying the degree to which the composition resists externally applied forces. In this invention, viscosity is an important factor determining the user experience when the composition is sprayed or applied to the skin, and it can be adjusted to an appropriate range to provide an optimal user experience suitable for the purpose of the invention. The viscosity range defined in this invention is established by considering the application method and formulation stability.

[0040] The term “spraying” as used in this specification refers to releasing a liquid composition outward to spread it widely. In the present invention, spraying is a method that enables the use of high-viscosity cosmetics in a spray form, aiming to ensure that the composition possesses appropriate fluidity at the moment of spraying and is uniformly distributed on the skin surface. In the present invention, the efficiency of spraying may vary depending on the shape of the spraying mechanism, the viscosity of the composition, and the spraying pressure.

[0041] The term “thickening agent” as used herein refers to a component added to increase the viscosity of a composition. The thickening agent is selected to ensure that the high-viscosity composition maintains an appropriate concentration without impairing usability, and is optimized by considering the sprayability, spreadability, and formulation stability of the composition. The thickening agent may be a natural or synthetic component and, depending on the purpose of the invention, serves to assist in the delivery of the active ingredient within the composition while simultaneously controlling the physical properties of the composition.

[0042] The objective of the present invention is to provide a high-viscosity cosmetic composition having self-restoring properties. In this case, the cosmetic composition of the present invention includes an ingredient having shear-thinning properties, thereby maintaining a creamy state while having high viscosity, and can provide excellent sprayability, moisturizing power, and formulation stability.

[0043] Figure 1a is a photograph confirming the appearance and viscosity of the formulation of Comparative Example 4.

[0044] Figure 1b is a photograph confirming the appearance and spray power of the formulation of Comparative Example 5.

[0045] Figure 2 is a photograph confirming the formulation and flowability when tilted of the composition of Example 23.

[0046] Figure 3 shows the results of confirming the change in viscosity according to the change in shear rate of the composition of Example 23.

[0047] FIG. 4a is a graph showing the change in viscosity relative to the shear rate of a formulation containing acrylate / behenes-25 methacrylate copolymer as a thickener according to one embodiment of the present invention.

[0048] FIG. 4b is a graph showing the change in viscosity relative to the shear rate of a formulation containing acrylic acid / VP crosspolymer as a thickener according to one embodiment of the present invention.

[0049] FIG. 4c is a graph showing the change in viscosity relative to the shear rate of a formulation containing ammonium polyacryloyl dimethyl taurate as a thickening agent, according to one embodiment of the present invention.

[0050] FIG. 5a is a graph showing the change in viscosity (Thixotropy Test) as the shear rate increases and decreases for a formulation containing acrylate / behenes-25 methacrylate copolymer as a thickening agent, according to one embodiment of the present invention.

[0051] FIG. 5b is a graph showing the change in viscosity (Thixotropy Test) as the shear rate increases and decreases for a formulation containing acrylic acid / VP crosspolymer as a thickener, according to one embodiment of the present invention.

[0052] FIG. 5c is a graph showing the change in viscosity (Thixotropy Test) when the shear rate increases and decreases for a formulation containing ammonium polyacryloyldimethyltaurate as a thickening agent, according to one embodiment of the present invention.

[0053] Figure 6 is a photograph confirming the spray force of the composition of Comparative Example 1.

[0054] Figure 7 is a photograph confirming the spray force of the composition of Comparative Example 2.

[0055] Figure 8 is a photograph confirming the spray force of the composition of Comparative Example 3.

[0056] Figure 9 is a photograph confirming the spray force of the composition of Example 1.

[0057] Figure 10 is a photograph confirming the spray force of the composition of Example 10.

[0058] Figure 11 is a photograph confirming the spray force of the composition of Example 18.

[0059] The present invention relates to a cosmetic composition comprising a thickening agent comprising one or more selected from the group consisting of ammonium polyacryloyldimethyl taurate, acrylic acid / VP crosspolymer, and acrylates / Beheneth-25 methacrylate copolymer.

[0060] Throughout this specification, when a part is described as “comprising” a certain component, it means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0061] Additionally, where numerical ranges are disclosed in this specification, such ranges are continuous and, unless otherwise specified, include all values ​​from the minimum value of such range up to the maximum value including the maximum value.

[0062] Throughout this specification, “%” used to indicate the concentration of a particular substance is (weight / weight)% for solid / solid, (weight / volume)% for solid / liquid, and (volume / volume)% for liquid / liquid, unless otherwise noted.

[0063] Furthermore, the term “or” in this specification is intended to mean an implied “or” rather than an exclusive “or.” That is, where the combination or use of the configurations is not otherwise specified or is not evident from the context, i.e., where X includes A; where X includes B; or where X includes both A and B, “X includes A or B” may be applied to either of these cases.

[0064] The present invention will be explained in detail below through experimental examples.

[0065]

[0066] Preparation Example. Preparation of a high-viscosity cosmetic composition

[0067] O / W water-in-water type cosmetic compositions were prepared using three types of thickeners with shear-thinning properties and other thickeners under various weight mixing ratio conditions.

[0068] The manufacturing process of the cosmetic composition according to the present invention is briefly described as follows. First, an aqueous phase containing polyol, a thickener, purified water, etc., and an oil phase containing an emulsifier, oil, preservative, etc., were each heated to 70°C and dissolved. Next, the oil phase was added to the aqueous phase while heated, and the mixture was emulsified by stirring at a speed of 6,000 to 7,000 rpm for 5 minutes to produce a stable cosmetic composition. The compositions of the examples of the manufactured cosmetic composition are shown in Tables 1 to 3, and the compositions of the comparative example are shown in Table 4.

[0069]

[0070] Classification Ingredient Content (Weight%) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Purified Water Purified Water To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 Emulsifier C12-16 Alcohol Hydrogenated Lecithin 0.25 0.25 0.25 0.25 0.25 0.25 0.25 Polyol Glycerin 55 55 55 5 Oil Hydrogenated Polydecene 10 10 10 10 10 10 10 Preservative 1,2-Hexanediol 1.5 1.5 1.5 1.5 1.5 1.5 1.5 Thickener Ammonium Polyacryloyldimethyltaurate 0.3 0.3 5 0.4 0.5 0.5 5 0.6 0.6 5 0.7

[0071]

[0072] Classification Ingredient Content (Weight%) Example 9 Example 10 Example 11 Example 12 Example 13 Example 14 Example 15 Example 16 Example 17 Purification Water Purification Water To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 Emulsifier C12-16 Alcohol Hydrogenated Lecithin 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 Polyol Glycerin 5.5 5.5 5.5 5.5 Oil Hydrogenated Polydecene 1.0 10 10 10 10 10 10 10 10 Preservative 1,2-Hexanediol 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 Thickening Agent Acrylic Acid / VP Crosspolymer 0.15 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 Neutralizing Agent Tromethamine 0.12 0.20 0.24 0.28 0.32 0.36 0.40 0.44 0.48

[0073]

[0074] Classification Ingredient Content (Weight%) Example 18 Example 19 Example 20 Example 21 Example 22 Example 23 Example 24 Tablet Water Tablet Water To 100 To 100 To 100 To 100 To 100 To 100 To 100 Emulsifier C12-16 Alcohol Hydrogenated Lecithin 1.2 1.2 1.2 1.2 1.2 1.2 Polyol Glycerin 12 12 12 12 12 12 Oil Hydrogenated Polydecene 3.5 3.5 3.5 3.5 3.5 3.5 Preservative Hydroxyacetophenone 0.6 0.6 0.6 0.6 0.6 0.6 0.6 Thickener Acrylates / Behenes-25 Methacrylate Copolymer 0.3 0.5 0.7 1.0 1.5 1.8 2.0 Neutralizing Agent Tromethamine 0.0 8 0.1 0.1 2 0.1 4 0.1 8 0.2 1 0.25

[0075]

[0076] Classification Ingredient Content (Weight%) Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Water Purification Water To 100 To 100 To 100 To 100 To 100 Emulsifier C12-16 Alcohol Hydrogenated Lecithin -0.25 0.25 0.25 0.25 0.25 Polyol Glycerin 555 55 Oil Hydrogenated Polydecene 999 99 Preservative 1,2-Hexanediol 1.5 1.5 1.5 Hydroxyacetophenone 0.6 0.6 Thickening Agent Acrylate / C10-30 Alkyl Acrylate Crosspolymer 0.25 Carbomer 0.18 Xanthan Gum 0.27 Acrylate / Behenes-25 Methacrylate Copolymer 0.1 2.1 Neutralizing Agent Tromethamine 0.18 0.14 0.0 18 0.27

[0077]

[0078] The cosmetic composition according to Comparative Example 4 of Table 4 above contains 0.1% by weight of a thickening agent, and the formulation according to this is shown in [Fig. 1a].

[0079] As can be seen in Fig. 1a, in the case of Comparative Example 4, the appearance of the composition became uneven and the oil phase separated into the upper layer, and since the formulation lacked viscosity and flowed down, it was confirmed that a formulation conforming to the present invention was not formed.

[0080] The cosmetic composition according to Comparative Example 5 of Table 4 above contains 2.1% by weight of a thickening agent, and the formulation according to this is shown in [Fig. 1b].

[0081] As can be seen in FIG. 2b, there is no apparent difference in appearance when containing 2 weight% of a thickener, but when this is placed in a sprayer and sprayed, it was confirmed that the spray angle is narrow and the spray is uneven. Through this, it was confirmed that when the thickener exceeds 2 weight%, it is not suitable as a mist type, which is the formulation intended in the present invention.

[0082] Therefore, it was confirmed that the desired formulation of the present invention is formed when the thickener is included in an amount of 0.1 to 2 weight%. The following experimental examples are to be conducted on compositions satisfying the content range of the thickener.

[0083]

[0084] Experimental Example 1. Test to verify high viscosity when no force is applied

[0085] An experiment was conducted to confirm the characteristic of the composition having high viscosity when no force is applied. The flow of the composition of Example 23 was observed when the container was tilted, and the viscosity when no force was applied was measured and is shown in Fig. 2 and Table 5. Viscosity was measured using a rheometer, and the change in viscosity according to the change in shear rate was further confirmed, with the results shown in Fig. 3. At this time, the viscosity was measured at 12 rpm using a No. 64 spindle.

[0086] Classification viscosity (cP) Example 2344,100 (64 / 12)

[0087]

[0088] As a result of the experiment, it was confirmed that the composition of Experimental Example 23 had low flowability when tilted and had a viscosity similar to or higher than that of a general cream (8,000 to 30,000 cP) formulation composition.

[0089] Furthermore, it can be observed that shear thinning behavior (or caustic fluidity), in which viscosity decreases as the shear rate increases, is exhibited. This implies that the internal network structure is temporarily dismantled during shear action and possesses a self-restoring structure that reforms once the shear is removed.

[0090]

[0091] Experimental Example 2. Experiment on Change in Viscosity Under Application of Force - Confirmation of Shear Thinning Behavior

[0092] To determine whether shear-thinning behavior, in which viscosity decreases as the shear rate increases, is observed for the composition containing the thickener used in the present invention, samples containing acrylate / beheneth-25 methacrylate copolymer, acrylic acid / VP crosspolymer, and ammonium polyacryloyldimethyltaurate, respectively (Examples 8, 14, and 21), were placed in a rheometer at a shear rate of 0.1 s -1 from 100 s -1 The viscosity was varied and the corresponding viscosity was shown in Figs. 4a, 4b, and 4c, respectively.

[0093] Accordingly, it is confirmed that the viscosity of all three thickeners decreases as the shear rate increases, and it is confirmed that the shear stress increases as the shear rate increases; thus, it can be confirmed that all thickeners used in the present invention exhibit shear thinning behavior.

[0094]

[0095] Experimental Example 3. Viscosity recovery after force application - Thixogropy test

[0096] For the compositions containing each of the thickeners used in the present invention (acrylate / behenes-25 methacrylate copolymer, acrylic acid / VP crosspolymer, ammonium polyacryloyldimethyltaurate) (Examples 8, 14, and 21, respectively), the shear rate was 0.1s using a rheometer. -1 from 100 s -1 Increased to (hereinafter referred to as 'Interval 1'), then reduced the shear rate again to 100 s -1 0.1s from -1 While decreasing the viscosity as (hereinafter referred to as 'Interval 2'), the viscosity was measured, and the viscosity curve relative to the shear rate was plotted and shown in FIGS. 5A, FIGS. 5B, and FIGS. 5C, respectively.

[0097] As a result, in the case of the composition containing acrylic acid / VP crosspolymer and ammonium polyacryloyldimethyltaurate (Examples 14 and 21), the curves for Interval 1 and Interval 2 were almost identical, indicating that the viscosity recovery characteristics are high.

[0098] In the case of a composition using acrylate / behenes-25 methacrylate copolymer as a thickener (Example 8), it was confirmed that, unlike other thickeners, the Interval 1 curve and the Interval 2 curve did not coincide, exhibiting a hysteresis region. This phenomenon is generally observed in thixotropic materials and is attributed to a temporary structural rearrangement in which the internal structure does not immediately collapse upon shear initiation but resists for a certain period of time.

[0099] In other words, in the initial region where shear force is applied, viscosity actually increases slightly due to structural resistance, and subsequently, as the shear force continues to increase, the internal structure gradually collapses and viscosity decreases. As a result, it is understood that a hysteresis area is formed between the Interval 1 curve and the Interval 2 curve.

[0100] However, when the shear force is reduced, the present composition exhibited the characteristic of rapidly recovering to a viscosity in a shear-free state. Therefore, the hysteresis region observed in the present composition is closely related to viscosity recovery (self-restoring force) after shearing, and this can be understood as a result consistent with the purpose and effect intended by the present invention.

[0101]

[0102] Experimental Example 4. Results of the comparative experiment on spray power by thickener

[0103] Experiments were conducted to compare spray force when different thickeners were included. The compositions of the examples and the comparative examples were placed in the same spraying container, and the spray force was tested by applying force. For each test, the spray angle, spray intensity, and aggregation were checked, and the results are shown in Figures 6 to 11 and Table 6, respectively.

[0104] Classification | Use | Thickener | Spray Angle | Spray Strength | Coagulation | Comprehensive Evaluation | Comparative Example 1 | Acrylate / C10-30 Alkyl Acrylate Crosspolymer | Narrow | Strong | Major Coagulation | X | Comparative Example 2 | Carbomer | Wide | Good | Partial Coagulation | △ | Comparative Example 3 | Xanthan Gum | Narrow | Strong | Major Coagulation | X | Example 1 | Ammonium Polyacryloyl Dimethyl Taurate | Wide | Good | Low Coagulation | O | Example 10 | Acrylic Acid / VP Crosspolymer | Wide | Good | Low Coagulation | O | Example 18 | Acrylate / Behenes-25 Methacrylate Copolymer | Wide | Good | Low Coagulation | O

[0105] Overall Evaluation Criteria: Good (○), Average (△), Poor (X)

[0106] A wide spray angle allows the composition to spread evenly over the entire skin, and since a strong spray intensity can burden the skin, it is desirable to spray gently with an appropriate intensity.

[0107] As a result of the experiment, in the case of the comparative example composition, the spray angle was narrow and the spray intensity was strong, and a phenomenon of aggregation was observed after spraying, whereas in the case of the example composition, all three types had a wide spray angle and a spray intensity suitable for mist cosmetics, and a relatively small aggregation phenomenon was observed after spraying on the skin.

[0108] The scope of protection of the present invention is not limited to the description of the embodiments explicitly explained above. Furthermore, the scope of protection of the present invention cannot be limited by obvious modifications or substitutions in the technical field to which the present invention belongs.

Claims

1. A cosmetic composition comprising a thickening agent including one or more selected from the group consisting of ammonium polyacryloyldimethyl taurate, acrylic acid / VP crosspolymer, and acrylates / Beheneth-25 methacrylate copolymer.

2. In Paragraph 1, A cosmetic composition comprising 0.1 to 2 weight percent of the above-mentioned thickener relative to the total composition.

3. In Paragraph 1, The above cosmetic composition is a cosmetic composition having a viscosity of 1,000 cP to 50,000 cP.

4. In Paragraph 1, The above cosmetic composition further comprises an emulsifier, a polyol, an oil, a preservative, and a neutralizing agent.

5. In Paragraph 1, A cosmetic composition wherein the formulation of the above cosmetic composition is an oil-in-water (O / W) type.

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