KR102439781B1 - Oil-in-water cosmetic composition having low-viscosity with stabilized high content oil - Google Patents

Abstract

The present invention relates to a low-viscosity, oil-in-water cosmetic composition comprising diutan gum, a cellulose-based thickening agent, a natural emulsifying agent, and oil. The low-viscosity, oil-in-water cosmetic composition according to the present invention comprises the diutan gum, the cellulose-based thickening agent, and the natural emulsifying agent to stabilize the high content of oil even at low viscosity, thereby minimizing stimulation to the skin and increasing shining and gloss of the skin. In addition, the low-viscosity, oil-in-water cosmetic composition of the present invention can be formed as a stable low-viscosity formulation, wherein the formation of a stable formulation is possible over time according to a temperature and the low-viscosity can be maintained through a simple preparing process to prevent separation between oil and water and a gelling phenomenon.

Description

Oil-in-water, low-viscosity cosmetic composition with stabilized high-content oil {OIL-IN-WATER COSMETIC COMPOSITION HAVING LOW-VISCOSITY WITH STABILIZED HIGH CONTENT OIL}

The present invention relates to an oil-in-water low-viscosity cosmetic composition in which a high content of oil is stabilized, and more specifically, while maintaining a stable low viscosity even with a high content of oil, including diutan gum, a cellulose thickener, a natural emulsifier and oil. It relates to an oil-in-water low-viscosity cosmetic composition capable of minimizing skin irritation as well as enhancing gloss and gloss.

The skin, the largest organ of the human body, has various physiological functions such as the function to protect various organs inside the skin from the outside, the barrier function to prevent the leakage of moisture and useful components from the inside, the temperature control function, the excretory function, the breathing function, etc. It is a very important institution in charge of Accordingly, modern people are using various types of cosmetics according to their preferences for skin health, and a representative example is a cosmetic composition in the form of an emulsion.

In general, an emulsion is a cosmetic used for the purpose of making the skin healthy by supplying oil and moisturizing agent, which are moisturizing factors, to the skin. It is composed of water-based ingredients consisting of ingredients and various additives such as moisturizing agents, preservatives, thickeners, water-dispersible polymers, skin protection ingredients, and fragrances. There should be no change over time.

However, the most representative difficulty in forming an emulsion is the formation of a stable emulsion.

Viscosity control is important to increase emulsion stability. If the viscosity is high, the product is not easily separated, which improves the stability of the formulation, but the feeling of use is heavy. Conversely, when the viscosity is low, the feeling of use is light, but the oil phase component and the water phase component are easily separated, resulting in an unstable formulation. Therefore, the use of appropriate thickeners and emulsifiers is essential for emulsion formation.

In addition, the technology for stabilizing a high content of oil in a low-viscosity formulation developed so far requires special equipment and methods such as a high-pressure emulsifier, so there is a problem that the manufacturing process is complicated and expensive. Therefore, there is a need to develop an oil-in-water formulation in which the manufacturing process is simple and the high content of oil is stabilized at low viscosity.

Accordingly, the present inventor maintains a stable low-viscosity formulation even at various temperatures by including diutan gum (Sphingomonas ferment extract), a cellulose thickener and a natural emulsifier, and a general oil-in-water type without a process requiring special equipment An oil-in-water cosmetic composition that can be manufactured by an emulsification method has been developed, leading to the present invention.

Korean Patent Publication No. 10-1503923

The present invention relates to an oil-in-water low-viscosity cosmetic composition comprising diutan gum, a cellulose-based thickener, a natural emulsifier and an oil. It has the effect of minimizing skin irritation and enhancing the skin's luster and glossiness.

However, the technical task to be achieved by the present invention is not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

According to one embodiment of the present invention, there is provided an oil-in-water low-viscosity cosmetic composition comprising diutan gum, a cellulose-based thickener, a natural emulsifier and an oil.

In the present invention, the diutan gum and the cellulose-based thickener may be an oil-in-water low-viscosity cosmetic composition included in a weight ratio of 1:2 to 20.

In the present invention, the cellulose-based thickener may be an oil-in-water low-viscosity cosmetic composition included in an amount of 0.15 to 1.0% by weight based on the total weight of the cosmetic composition.

In the present invention, the oil may be an oil-in-water low-viscosity cosmetic composition included in an amount of 10 to 30% by weight based on the total weight of the cosmetic composition.

In the present invention, the cellulose-based thickener is any one selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, methyl hydroxypropyl cellulose, microcrystalline cellulose, and cellulose gum. It may be an oil-in-water low-viscosity cosmetic composition comprising the above.

In the present invention, the natural emulsifier may be an oil-in-water low-viscosity cosmetic composition comprising at least one selected from the group consisting of a glyceryl-based emulsifier and a glucoside-based emulsifier.

In the present invention, the glyceryl-based emulsifier is glyceryl citrate/lactate/linoleate/oleate, polyglyceryl-4 caprate, polyglyceryl-10 laurate, polyglyceryl-3 ricinoleate, polyglyceryl It may be an oil-in-water low-viscosity cosmetic composition comprising at least one selected from the group consisting of -10 oleate and polyglyceryl-6 laurate.

In the present invention, the glucoside-based emulsifier may be an oil-in-water low-viscosity cosmetic composition comprising at least one selected from the group consisting of decyl glucoside, lauryl glucoside, hexyl glucoside, capryl glucoside, lauryl glucoside, and myristyl glucoside. .

In the present invention, the oil may be an oil-in-water low-viscosity cosmetic composition, characterized in that it is an aromatic carboxylic acid ester oil.

In the present invention, the aromatic carboxylic acid ester oil is composed of dipropylene glycol dibenzoate, C12-15 alkylbenzoate, butyloctylbenzoate, methylbenzoate, octyldodecylbenzoate, and isostearylbenzoate. It may be an oil-in-water low-viscosity cosmetic composition comprising any one or more selected from the group.

In the present invention, the oil-in-water low-viscosity cosmetic composition may be an oil-in-water low-viscosity cosmetic composition having a viscosity of 4,000 cps or less.

The oil-in-water low-viscosity cosmetic composition provided in the present invention contains diutan gum, a cellulose-based thickener, and a natural emulsifier to stabilize a high content of oil even at low viscosity to minimize skin irritation as well as improve skin's luster and glossiness. has an enhancing effect.

1 is an image of a formulation prepared according to Example 1 of the present invention measured with an optical microscope immediately after preparation.
2 and 3 are images of the formulations prepared according to Comparative Examples 3 and 4 of the present invention measured with an optical microscope immediately after preparation.
4 is an image of the formulation prepared according to Example 4 of the present invention measured with an optical microscope immediately after preparation.
5 and 6 are images of the formulations prepared according to Comparative Examples 5 and 6 of the present invention measured with an optical microscope immediately after preparation.
7 shows an image of observing the flowability of formulations prepared according to Examples and Comparative Examples of the present invention.
8 is an image measured with an optical microscope after a high temperature stability test of the formulation prepared according to the example of FIG. 1 .
9 shows an image of the formulation after the high temperature stability test of the formulation prepared according to the example of FIG. 1 .
10 to 13 show images of formulations after high temperature stability tests of formulations prepared according to FIGS. 2, 3, 5 and 6.

Hereinafter, examples will be given to describe in more detail. However, the following examples are illustrative, and the scope of the present invention is not limited thereto.

According to an embodiment of the present invention, it relates to an oil-in-water low-viscosity cosmetic composition comprising diutan gum, a cellulose-based thickener, a natural emulsifier and an oil.

The diutan gum and cellulose-based thickener of the present invention may be an oil-in-water low-viscosity cosmetic composition included in a weight ratio of 1:2 to 20, and forms a stable formulation of a desired low viscosity while containing a high content of oil suitably 1: may be an oil-in-water low-viscosity cosmetic composition included in a weight ratio of 2 to 10, but is not limited thereto.

When the ratio of the diutan gum and the cellulose thickener is out of the range, the desired low viscosity cannot be maintained, the oil-water phase separation may occur, and a stable oil-in-water low-viscosity cosmetic composition cannot be formed regardless of the change in time according to the temperature. Problems may arise.

The Diutan gum is a natural high molecular weight gum produced by aerobic fermentation, produced through fermentation of Sphingomonas species (ATCC 53159), and a polymer composed of long chains of monosaccharide units bonded by glycosidic bonds. As a carbohydrate molecule, it corresponds to a polysaccharide. In addition, it is a kind of biopolymer showing thickening, suspending and stabilizing properties in aqueous solution.

In the present invention, the diutan gum prepared from the commonly used Sphingomonas ferment extract can be used, and the oil-phase drop can be stably suspended by forming a 3D network in the oil-in-water low-viscosity cosmetic composition. can

The diutan gum may be included, for example, in an amount of 0.05 to 0.6% by weight, 0.06 to 0.5% by weight, 0.07 to 0.4% by weight, 0.08 to 0.4% by weight, based on the total weight of the oil-in-water low viscosity cosmetic composition, and the desired low viscosity It may be an oil-in-water low-viscosity cosmetic composition that is most suitably included in an amount of 0.1 to 0.3% by weight in terms of maintaining the range, but is not limited thereto.

When the diutan gum is out of the content range of the present invention with respect to the total weight of the oil-in-water low-viscosity cosmetic composition, emulsification is impossible and it may be difficult to form a desired low-viscosity formulation.

The cellulosic thickener of the present invention may be included, for example, in an amount of 0.15 to 1.0% by weight, 0.2 to 1.0% by weight, based on the total weight of the oil-in-water low-viscosity cosmetic, and prevents coalescence between oil phase particles and stabilizes the emulsified particles. In terms of maintaining the desired low viscosity range through formation or dispersion, it may be an oil-in-water low-viscosity cosmetic composition that is most suitably included in an amount of 0.3 to 0.75% by weight, but is not limited thereto.

When the cellulose-based thickener is included in an amount of less than 0.15% by weight based on the total weight of the oil-in-water low-viscosity cosmetic composition, a low viscosity of 1,500 cps or less is formed, so that the oil is not stabilized and the separation of the aqueous phase and the oil phase occurs. Problems may occur, and when it is included in an amount exceeding 1.0 wt %, it may not be possible to form a desired low viscosity due to a high viscosity of 4,000 cps or more, but also a problem in which a gelation phenomenon appears may occur.

The oil of the present invention may be, for example, an oil-in-water low-viscosity cosmetic composition comprising 10 to 30% by weight and 12 to 27% by weight, based on the total weight of the oil-in-water low-viscosity cosmetic, and In terms of improving gloss and gloss, it may be an oil-in-water low-viscosity cosmetic composition that is most suitably included in an amount of 15 to 25% by weight, but is not limited thereto.

The cellulose-based thickener of the present invention is any one selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, methyl hydroxypropyl cellulose, microcrystalline cellulose, and cellulose gum. It may be an oil-in-water low-viscosity cosmetic composition comprising the above, and it is suitably an oil-in-water low-viscosity cosmetic composition comprising at least one of microcrystalline cellulose and cellulose gum in terms of preventing coalescence between oil phase particles and stabilizing dispersion can, but is not limited thereto.

The natural emulsifier of the present invention may be an oil-in-water low-viscosity cosmetic composition comprising at least one selected from the group consisting of a glyceryl-based emulsifier and a glucoside-based emulsifier.

The glyceryl emulsifier of the present invention is glyceryl citrate/lactate/linoleate/oleate, polyglyceryl-4 caprate, polyglyceryl-10 laurate, polyglyceryl-3 ricinoleate, polyglyceryl It may be an oil-in-water low-viscosity cosmetic composition comprising at least one selected from the group consisting of -10 oleate, polyglyceryl-6 laurate, and suitable in terms of forming stable oil-phase particles through stabilization of the oil-water phase interface may be an oil-in-water low-viscosity cosmetic composition comprising glyceryl citrate/lactate/linoleate/oleate, but is not limited thereto.

The glucoside emulsifier of the present invention may be an oil-in-water low-viscosity cosmetic composition comprising at least one selected from the group consisting of decyl glucoside, lauryl glucoside, hexyl glucoside, and capryl glucoside.

In the present invention, the natural emulsifier may include an emulsifier mixed with a glyceryl-based emulsifier and a glucoside-based emulsifier, and may suitably include lauryl glucoside * myristyl glucoside * polyglyceryl-6 laurate.

The oil of the present invention may be an oil-in-water low-viscosity cosmetic composition, characterized in that it is an aromatic carboxylic acid ester oil, but as an oil with a high refractive index of 1.48 or more, if it is intended to impart gloss and luster to the skin with a high refractive index, it is limited thereto doesn't happen

The aromatic carboxylic acid ester oil of the present invention consists of dipropylene glycol dibenzoate, C12-15 alkylbenzoate, butyloctylbenzoate, methylbenzoate, octyldodecylbenzoate, and isostearylbenzoate. It may be an oil-in-water low-viscosity cosmetic composition comprising at least one selected from the group, suitably dipropylene glycol dibenzoate and C12-15 alkylbenzoate in terms of enhancing skin gloss with oil of high refractive index It may be an oil-in-water low-viscosity cosmetic composition comprising at least one of them, but is not limited thereto.

The oil-in-water cosmetic composition of the present invention may be characterized as having a viscosity of 4,000 cps or less, and is suitably 1,500 to 4,000 cps, 1,700 to 3,800 cps, or 1,900 in terms of having an excellent feeling while stabilizing a high content of oil. It may be an oil-in-water low-viscosity cosmetic composition, characterized in that it has a viscosity of 3,600 cps, but is not limited thereto.

For example, when the viscosity is less than 1,500 cps, the stabilization of the oil is not achieved, and the effect of forming or dispersing stable emulsified particles is low, and separation of the aqueous phase and the oil phase may occur, and the formulation may flow down due to the low viscosity. can occur In addition, when the viscosity exceeds 4,000cps, the gelling phenomenon of the surface of the emulsified particles is weakly generated or the flowability of the formulation is not observed due to the medium concentration and a problem of changing to a gel phase may occur.

In the present invention, the oil-in-water low-viscosity cosmetic composition may be an oil-in-water low-viscosity cosmetic composition comprising at least one selected from the group consisting of polyols, chelating agents, preservatives and distilled water.

The polyol is propylene glycol, butylene glycol, dipropylene glycol, methyl propanediol, pentylene glycol, tripropylene glycol, glycerin, diglycerin, polyglycerin, 2,3-butanediol It may be an oil-in-water low-viscosity cosmetic composition comprising at least one selected from the group consisting of It may be an oil-in-water low-viscosity cosmetic composition comprising at least one.

For example, the polyol may be included in 3 to 30% by weight, 4 to 25% by weight, and suitably 6 to 18% by weight, based on the total weight of the oil-in-water low-viscosity cosmetic, but is not limited thereto.

The chelating agent may be an oil-in-water low-viscosity cosmetic composition comprising at least one selected from the group consisting of disodium EDTA, trisodium EDTA, and tetrasodium EDTA, but is not limited thereto.

For example, the chelating agent may be included in 0.01 to 0.07% by weight, 0.01 to 0.05% by weight, preferably 0.02 to 0.04% by weight, but is not limited thereto, based on the total weight of the oil-in-water low-viscosity cosmetic. .

The preservative, glyceryl caprylate, ethylhexyl glycerin, caprylyl glycol, phenoxyethanol, hydroxyacetophenone, low viscosity oil-in-water containing any one or more selected from the group consisting of 1,2-hexanediol It may be a cosmetic composition, and is not limited as long as it is intended to impart preservative power to the cosmetic composition, but may suitably include any one or more selected from hydroxyacetophenone and 1,2-hexanediol.

For example, the preservative may include 0.5 to 3.0% by weight, 0.7 to 2.5% by weight, and suitably 1 to 2.2% by weight based on the total weight of the oil-in-water low-viscosity cosmetic, but is not limited thereto. .

The oil-in-water low-viscosity cosmetic composition enhances the skin's luster and glossiness. It may be for skin moisturizing, feeling of use, and improvement of absorption.

As used herein, the term “cosmetic composition” refers to an article used in the human body to clean and beautify the human body to add attractiveness, to brighten the appearance, or to maintain or promote health of skin and hair.

The skin includes all skin parts of the body including the face, hands, arms, legs, feet, chest, belly, back, buttocks, and scalp.

The oil-in-water low-viscosity cosmetic composition further comprises any one or more selected from the group consisting of a solubilizer, a thickener, a preservative, a stabilizer, a solubilizer, a surfactant, a carrier, and a fragrance within the scope of the present invention It may be a weakly acidic low-viscosity cosmetic composition, and other ingredients and functional ingredients that are formulated in conventional cosmetics may be additionally formulated.

The type of the cosmetic composition is not particularly limited, but suitably it may be selected from the group consisting of skin lotion, skin softener, skin toner, astringent, essence, nourishing essence, pack, mask pack, cleansing foam, and body cleanser. , may be any one selected from the group consisting of external preparations for skin, quasi-drugs, and pharmaceutical compositions for antibacterial or moisture supply.

The external preparation for skin may be an ointment, a skin emulsifier, a skin suspension, a transdermally delivered patch, a drug-containing bandage, a lotion, or a combination thereof. The external preparation for skin is a component used in external preparations for skin such as cosmetics or pharmaceuticals, for example, an aqueous component, an oily component, a powder component, alcohol, a moisturizer, a thickener, an ultraviolet absorber, a whitening agent, a preservative, an antioxidant, a surfactant, a fragrance , colorant, various skin nutrients, or a combination thereof may be appropriately formulated as needed. The external preparation for skin includes metal sequestering agents such as disodium edetate, trisodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, and gluconic acid, caffeine, tannin, belapamil, licorice extract, glablidine, and kaline. Fruit hot water extracts, various herbal medicines, drugs such as tocopherol acetate, glitylic acid, tranexamic acid and its derivatives or salts thereof, vitamin C, magnesium ascorbate phosphate, ascorbic acid glucoside, arbutin, kojic acid, glucose, fructose, Sugars, such as trehalose, etc. can be mix|blended suitably.

Hereinafter, the present invention will be described in detail by the following examples. However, the following examples are merely illustrative of the present invention, and the content of the present invention is not limited by the following examples.

Example

Experimental Example 1: Efficacy evaluation according to the ratio of diutan gum and cellulose-based thickener

division
(weight ratio) Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Diutan Gum One One One - 100 One One Cellulose thickener 2 10 20 100 - One 25

As shown in Table 1, an oil-in-water low-viscosity cosmetic composition was prepared in the ratio of diutan gum and cellulose thickener of Examples 1 to 3 and Comparative Examples 1 to 4, and the viscosity and stability of the formulation were evaluated. It is shown in Tables 2 and 3 below.

Specifically, the oil-in-water low-viscosity cosmetic composition prepared in the ratio of Table 1 contains 12% by weight of a polyol (pentylene glycol, methylpropanediol, propanediol), a chelating agent (diol) based on the total weight of the oil-in-water low-viscosity cosmetic composition. Sodium EDTA) 0.03% by weight, preservatives (hydroxyacetophenone, 1,2-hexanediol) 1.5% by weight, natural emulsifiers (glyceryl citrate/lactate/linoleate/oleate) 1% by weight, oil (dipropylene) glycol dibenzoate) 20% by weight and the remainder of purified water, and diutan gum and cellulose-based thickeners were used as thickeners, and microcrystalline cellulose and cellulose gum were used as cellulose thickeners. In addition, diutan gum and cellulose thickener were used in an amount of 0.7% by weight based on the total weight of the oil-in-water low-viscosity cosmetic composition, and were included in the ratio according to Table 1 above.

In addition, the particles of the prepared oil-in-water cosmetic composition were measured and observed with an optical microscope at a magnification of 1,000, and the viscosity was evaluated at 25° C. using a Brookfield viscometer DV2TLBTJO (the viscometer spindle number was # 3) It was carried out by measuring the average value by measuring each three times under the condition of the rotation speed of 12rpm, and the stability of the formulation was evaluated at 5℃, room temperature (25℃), 45℃ and Cycle (-5~45℃). While the samples were stored in the chamber of , the separation and gelling phenomena of the composition were visually observed to indicate stable or unstable conditions.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Viscosity (cps) 2,000 2,800 3,500 not measurable not measurable 1,100 6,100

As shown in Tables 1 and 2 above, in the case of Examples 1 to 3 including the diutan gum and the cellulose thickener in a ratio of 1: 2 to 20, the formulation can be formed as an oil-in-water low-viscosity cosmetic composition. Specifically, it was confirmed through Fig. 1 for Example 1 that all of Examples 1 to 3 maintained a desired low viscosity of 1,500 to 4,000 cps, and stabilization of oil was possible by forming or dispersing the emulsified particles small and stably. , it can be confirmed through Figure 7 for Example 2 that the flow-down phenomenon of the appropriate formulation appears due to the low viscosity and stable formulation formation.

Comparative Example 1 is a case in which diutan gum is not included and only a cellulose thickener is included, and Comparative Example 2 is a case in which a cellulose thickener is not included and only diutan gum is included. In Comparative Examples 1 and 2, emulsification was impossible, and it was difficult to form a low viscosity as a formulation having a very high viscosity, and a problem occurred in that the viscosity was not measured.

Comparative Example 3 contains diutan gum and a cellulose thickener in a ratio of 1: 1 which is less than the range of the present invention, and it can be confirmed through FIG. 2 that the effect of forming or dispersing stable emulsified particles is low, and diutan As compared to Example 1 containing gum and cellulose thickener in a ratio of 1:2, it was confirmed through FIG. 7 that a problem of the formulation flowing down occurred by forming a low viscosity of 1,100 cps.

Comparative Example 4 contains diutan gum and a cellulose thickener in a ratio of 1: 25 exceeding the scope of the present invention, and it can be confirmed through FIG. It was found that, compared to Example 3 containing diutan gum and cellulose thickener in a ratio of 1:20, a high viscosity of 6,100 cps was formed, thereby failing to form a desired low-viscosity formulation. In addition, it could be confirmed through FIG. 7 that the flowability of the formulation was not observed due to the gelling phenomenon and the medium strength.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 5℃ stability stability stability not measurable not measurable Instability Instability room temperature stability stability stability not measurable not measurable Instability Instability 45℃ stability stability stability not measurable not measurable Instability Instability CYCLE stability stability stability not measurable not measurable Instability Instability

As shown in Tables 1 and 3, in the case of Examples 1 to 3 including the diutan gum and the cellulose thickener in a ratio of 1: 2 to 20, the separation of the aqueous phase and the oil phase regardless of the change in time according to the temperature It was confirmed that all formulations were stably formed without any occurrence.

Specifically, when Example 1 was reacted at 45° C. for 4 weeks, it was confirmed through FIG. 8 that the oil could be stabilized by forming or dispersing the emulsified particles small and stably regardless of the change in temperature or time. It was confirmed through FIG. 9 that a stable emulsion of low viscosity was formed even though it contained a high content of oil.

In addition, in Comparative Examples 1 and 2, when either one of the diutan gum and the cellulose thickener of the present invention is included, it is impossible to form a stable formulation, to stabilize a high content of oil, and to not stably form emulsified particles. could check Accordingly, the oil-in-water low-viscosity cosmetic composition of Comparative Examples 1 and 2 did not emulsify, so it was impossible to measure the stability.

In addition, Comparative Example 3 contained less than the ratio of diutan gum and cellulose thickener according to the present invention, and all were unstable regardless of the change in time according to temperature. Specifically, when Comparative Example 3 was reacted at 45° C. for 4 weeks, it was confirmed through FIG. 10 that the oil was not stabilized due to the low viscosity, so that the separation of the aqueous phase and the oil phase occurred.

Comparative Example 4 was a case in which the ratio of the diutan gum and the cellulose thickener according to the present invention was exceeded, and it was confirmed that all of them were unstable regardless of the change in time according to the temperature. Specifically, when Comparative Example 4 was reacted at 45° C. for 4 weeks, it was confirmed through FIG. 11 that it was impossible to form a low viscosity according to the increase in viscosity and changed to a gel phase instead of a flowing formulation.

Accordingly, when preparing the oil-in-water low-viscosity cosmetic composition at a ratio of 1:2 to 20, which is the ratio of diutan gum and cellulose thickener of the present invention, a high content of oil is added while maintaining a low viscosity of 1,500 to 4,000cps. It is possible to stably form or disperse the emulsified particles stably, and it is possible to form a formulation stably without separation of the aqueous phase and oil phase not only at room temperature but also at 5 ° C and 40 ° C. was found to be effective.

Experimental Example 2: Efficacy evaluation according to the content of the cellulosic thickener

division Example 1 Example 4 Example 5 Comparative Example 5 Comparative Example 6 content% 0.49 0.15 One 0.1 1.5

As shown in Table 4, an oil-in-water low-viscosity cosmetic composition was prepared by weight% of the cellulose thickener of Examples 4 and 5 and Comparative Examples 5 and 6 with respect to the total weight of the oil-in-water low-viscosity cosmetic composition. Stability was evaluated and shown in Tables 5 and 6 below.

Specifically, the type and content of the oil-in-water low-viscosity cosmetic composition prepared with the weight% of the cellulose thickener of Table 4, except for the weight% of the cellulose thickener with respect to the total weight of the oil-in-water low-viscosity cosmetic composition, are those of Experimental Example 1 It was prepared in the same way, and the ratio of diutan gum and cellulose thickener was included in the same ratio of 1:2 as in Example 1.

In addition, evaluation of the viscosity and stability of the formulation was carried out in the same manner as in Experimental Example 1.

division Example 1 Example 4 Example 5 Comparative Example 5 Comparative Example 6 Viscosity (cps) 2,000 1,900 3,600 900 5,200

As shown in Tables 4 and 5, in the case of Examples 4 and 5 containing 0.15 to 1.0% by weight of a cellulose thickener based on the total weight of the oil-in-water low-viscosity cosmetic composition, it is possible to form a formulation as an oil-in-water low-viscosity cosmetic composition do. Specifically, it was confirmed through FIG. 4 for Example 4 that both Examples 4 and 5 maintained a desired low viscosity of 1,500 to 4,000 cps, and stabilization of the oil was possible by forming or dispersing the emulsified particles small and stably. .

Comparative Example 5 is a case of including 0.1% by weight, which is less than 0.1% by weight of the cellulose thickener according to the present invention, and it can be confirmed through FIG. 5 that the effect of forming or dispersing stable emulsified particles is low, and the cellulose thickener is 0.49% by weight %, it was found that a significantly lower viscosity of 900 cps was formed, thereby failing to form the desired low-viscosity formulation.

Comparative Example 6 is a case of including 1.5% by weight exceeding the weight% of the cellulose thickener according to the present invention, and it can be seen through FIG. Compared to Example 1 containing the agent in an amount of 0.49% by weight, it was found that a rather high viscosity of 5,200 cps was formed, thereby failing to form the desired low-viscosity formulation.

division Example 1 Example 4 Example 5 Comparative Example 5 Comparative Example 6 5℃ stability stability stability Instability Instability room temperature stability stability stability Instability Instability 45℃ stability stability stability Instability Instability CYCLE stability stability stability Instability Instability

As shown in Tables 4 and 6, in the case of Examples 4 and 5 containing 0.15 to 1.0% by weight of a cellulose thickener based on the total weight of the oil-in-water low-viscosity cosmetic composition, regardless of the change in time depending on the temperature, the aqueous phase part And it was confirmed that all of the formulations were stably formed without separation of the oil phase.

Specifically, when Examples 4 and 5 were reacted at 45 ° C. for 4 weeks, it was found that a stable emulsion was formed while maintaining low viscosity, and 0.49 wt% of a cellulose thickener was added with respect to the total weight of the oil-in-water low-viscosity cosmetic composition. It was found that there was no difference in the effect even in comparison with Example 1 included.

In addition, Comparative Example 5 contained less than the weight% of the cellulose thickener with respect to the total weight of the oil-in-water low-viscosity cosmetic composition of the present invention, and all were unstable regardless of the change in time according to the temperature. In addition, when Comparative Example 5 was reacted at 45° C. for 4 weeks, it was confirmed through FIG. 12 that the oil was not stabilized due to the low viscosity, so that the separation of the aqueous phase and the oil phase occurred.

Comparative Example 6 was a case in which it contained more than the weight% of the cellulose thickener with respect to the total weight of the oil-in-water low-viscosity cosmetic composition of the present invention, and it was confirmed that all of them were unstable regardless of the change in time with temperature. And, when Comparative Example 6 was reacted at 45° C. for 4 weeks, it was confirmed through FIG. 13 that it was impossible to form a low viscosity according to the increase in viscosity and changed to a gel phase instead of a flowing formulation.

Accordingly, when the content of the cellulose thickener is prepared in an amount of 0.15 to 1.0% by weight based on the total weight of the oil-in-water low-viscosity cosmetic composition of the present invention, while maintaining a low viscosity of 1,500 to 4,000 cps, a high content of oil is stabilized. Emulsified particles can be stably formed or dispersed, and the formulation can be stably formed without separation of the aqueous phase and oil phase not only at room temperature but also at 5°C and 40°C. was found to be effective.

Experimental Example 3: Evaluation of skin irritation according to the type of emulsifier

division Example 1 Example 6 Example 7 Comparative Example 7 Comparative Example 8 Comparative Example 9 emulsifier
type Glyceryl Citrate/Lactate/Linoleate/Oleate Lauryl Glucoside * Myristyl Glucoside * Polyglyceryl-6 Laurate Polyglyceryl-3 Ricinoleate PEG/PPG-8/3 Laurate PEG-40 Stearate Polysorbate 60 skin irritation 5 4.5 4.5 2 2 2.5

As shown in Table 7, skin irritation evaluation was performed by preparing oil-in-water low-viscosity cosmetic compositions containing different types of emulsifiers of Examples 6 and 7 and Comparative Examples 7 to 9. Specifically, except for the type of emulsifier, the content of the emulsifier and the types and contents of other compositions were prepared in the same manner as in Example 1.

In addition, skin irritation evaluation was made for 25 men and women each, and two samples of each cosmetic composition prepared with the emulsifier according to Table 7 were given to use for 2 weeks, and then 0 points for skin irritation After evaluation by giving a score of 5 to 5, the average value was taken to derive the result. (1 point: severe irritation, 2 points: some stimulation, 3 points: moderate, 4 points: little stimulation, 5 points: no stimulation at all)

Specifically, in the case of Example 1 using glyceryl citrate/lactate/linoleate/oleate as a natural emulsifier, the skin irritation evaluation was 5 points, confirming that it was the most excellent without any skin irritation, and lauryl as a natural emulsifier In the case of Example 6 using glucoside * myristyl glucoside * polyglyceryl-6 laurate and Example 7 using polyglyceryl-3 ricinoleate, it can be seen that all skin irritation evaluations were 4.5 points or higher, indicating almost no irritation. there was.

In addition, in the case of Comparative Examples 7 to 9 using the synthetic emulsifier, the skin irritation evaluation was all 2.5 points or less, and it was confirmed that the skin irritation property was significantly higher than in Example 1.

Accordingly, it was found that when mixed with the natural emulsifier according to the present invention for interfacial stabilization of the oil-water phase of the oil-in-water low-viscosity cosmetic composition, skin irritation was minimized and skin safety was excellent.

Experimental Example 4: Evaluation of skin luster according to the type of oil

division Example 1 Example 8 Example 9 Comparative Example 10 Comparative Example 11 Comparative Example 12 oil type Dipropylene glycol dibenzoate C12-15 Alkylbenzoate Butyloctylbenzoate Caprylic/Capric Triglycerides isododecane jojoba oil glossiness 71 68 69 63 60 66

As shown in Table 8, according to Examples 8 and 9 and Comparative Examples 10 to 12, oil-in-water low-viscosity cosmetic compositions containing different types of oil were prepared, and skin gloss was evaluated. Specifically, the content of the oil except for the type of oil, the type and content of other compositions were prepared in the same manner as in Example 1.

In addition, the evaluation of skin gloss was measured by the gloss of the low-viscosity cosmetic formulation prepared according to Table 7, and the measurement method was after applying the formulation to the skin in a predetermined size (1 cm * 1 cm) and then using a Skin Glossmeter (Delfin Technologies). Ltd, Finland) was measured three times and calculated as an average value. The unit of measurement is the Skin Gloss Unit (SGU), and the measured value is proportional to the level of skin gloss and glossiness.

Specifically, in the case of Examples 1, 8, and 9 in which the aromatic carboxylic acid ester oil was used, the glossiness was 68 or more, and it was confirmed that there was an effect of imparting luster to the skin.

In addition, in the case of Comparative Examples 10 to 11 in which an oil of a component other than the aromatic carboxylic acid ester oil was used, it was confirmed that the gloss was somewhat lower than in Example 1.

Accordingly, when the oil-in-water low-viscosity cosmetic composition is prepared by mixing the aromatic carboxylic acid ester oil according to the present invention, due to the high refractive index of the oil, when applied to the skin, there is an effect of enhancing the glossiness by imparting a gloss to the skin. And it was found.

Therefore, referring to Experimental Examples 1 to 4 and Tables 1 to 8, when preparing an oil-in-water low-viscosity cosmetic composition according to the weight ratio of diutan gum and cellulose-based thickener of the present invention, stable formation or dispersion of emulsified particles It was confirmed that proper flowability of the formulation appeared by forming a low viscosity of 1,900 to 3,600 cps due to the effect of

In addition, when preparing the oil-in-water low-viscosity cosmetic composition according to the weight range of the cellulosic thickener of the present invention, the high-content oil is stabilized while maintaining the desired low viscosity, so that it is not only at room temperature (25°C) but also at high temperature (40°C). ), low temperature (5 ℃) and CYCLE (-5 ~ 40 ℃) in various environments, it was confirmed that the effect of maintaining a stable formulation.

In addition, when the natural emulsifier according to the present invention and a high content of oil are included, it can be confirmed that there is an effect of not only minimizing irritation to the skin, but also enhancing the gloss and glossiness of the skin.

As described above in detail a specific part of the present invention, for those of ordinary skill in the art, this specific description is only a preferred embodiment, and it is clear that the scope of the present invention is not limited thereto. Accordingly, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

Claims (11)

Contains diutan gum, cellulose-based thickener, natural emulsifier and oil,
The oil-in-water low-viscosity cosmetic composition comprising the diutan gum and the cellulose-based thickener in a weight ratio of 1:2 to 20. delete According to claim 1,
The cellulose-based thickener is an oil-in-water low-viscosity cosmetic composition comprising 0.15 to 1.0% by weight based on the total weight of the cosmetic composition. According to claim 1,
The oil is an oil-in-water low-viscosity cosmetic composition comprising 10 to 30% by weight based on the total weight of the cosmetic composition. According to claim 1,
The cellulose-based thickener includes at least one selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, methyl hydroxypropyl cellulose, microcrystalline cellulose, and cellulose gum. An oil-in-water low-viscosity cosmetic composition. According to claim 1,
The natural emulsifier is an oil-in-water low-viscosity cosmetic composition comprising at least one selected from the group consisting of a glyceryl-based emulsifier and a glucoside-based emulsifier. 7. The method of claim 6,
The glyceryl-based emulsifier is glyceryl citrate/lactate/linoleate/oleate, polyglyceryl-4 caprate, polyglyceryl-10 laurate, polyglyceryl-3 ricinoleate, polyglyceryl-10 oligo Eight, polyglyceryl-6 laurate, oil-in-water, low-viscosity cosmetic composition comprising at least one selected from the group consisting of. 7. The method of claim 6,
The glucoside emulsifier comprises at least one selected from the group consisting of decyl glucoside, lauryl glucoside, hexyl glucoside, capryl glucoside, lauryl glucoside, and myristyl glucoside. According to claim 1,
The oil is an oil-in-water low-viscosity cosmetic composition, characterized in that the aromatic carboxylic acid ester oil. 10. The method of claim 9,
The aromatic carboxylic acid ester oil is selected from the group consisting of dipropylene glycol dibenzoate, C12-15 alkylbenzoate, butyloctylbenzoate, methylbenzoate, octyldodecylbenzoate, and isostearylbenzoate. An oil-in-water low-viscosity cosmetic composition comprising one or more of the According to claim 1,
The oil-in-water low-viscosity cosmetic composition is an oil-in-water low-viscosity cosmetic composition, characterized in that it has a viscosity of 4,000 cps or less.

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