KR102621818B1 - Water in oil type cosmetic composition - Google Patents

Abstract

Oily ingredients including surfactants and oils; thickener; and an aqueous component including water, salt, and polyhydric alcohol, wherein the salt is contained in an amount of 5 to 30 parts by weight based on 100 parts by weight of the water. The present invention provides a water-in-oil cosmetic composition and a cosmetic product formulated therefrom. .

Description

Water-in-oil type cosmetic composition {WATER IN OIL TYPE COSMETIC COMPOSITION}

This disclosure relates to a water-in-oil cosmetic composition that stably contains a high concentration of salt and has excellent stability and antibacterial activity.

Since ancient times, when people ingested salt, it had a detoxifying effect to remove poison, an anti-inflammatory effect to remove inflammation, a purifying effect to purify the blood, a promotion of metabolism by excreting waste products, and an action to kill germs and prevent the body from decay. It is well known for its sterilizing and preservative properties, restoring destroyed cells, neutralizing body fluids to improve the constitution, antibacterial effect, and pressure regulating effect to maintain the balance of blood pressure and body weight. Salt has a positive effect on the human body not only when ingested but also when applied to the skin. It has been reported to have a superior skin moisturizing effect than urea, a natural moisturizing factor of the skin, and to relieve various skin troubles (skin soothing). It is known to be effective in removing skin waste, exfoliation, acne, wrinkles, and atopic dermatitis.

Accordingly, various cosmetics have been developed due to the excellent efficacy of salt, but most of these were not developed as cosmetics with high concentration salt dissolved, but were merely developed as scrub products using salt precipitation. Likewise, salt has excellent efficacy on the skin, so it is often used as a cosmetic. However, unlike general cosmetics, scrub agents are difficult to apply on the skin and provide continuous efficacy. In the case of water-in-oil type cosmetics that use water like general cosmetics, There is an instability problem in that the salt component dissociates in water and drastically reduces the solubility of the surfactant, causing cosmetics to not be manufactured or even if they are manufactured, separation is accelerated. In addition, when a large amount of salt is stabilized in a water-in-oil cosmetic, even if it is stabilized, there is a problem that the feeling of use is greatly worsened using the previous technology.

Above all, in order to deliver the benefits of salt such as skin waste removal, exfoliation, anti-inflammatory, atopic skin relief, moisturizing effect, etc., it is absolutely necessary to have a cosmetic composition in which a high concentration of salt exists stably in a dissolved state without precipitating in the water phase. , there is a problem in implementing a stable composition when salt is included in high concentration, so the salt-containing cosmetic compositions that are conventionally used instead of scrubs contain only a very small amount of salt in order to stably contain salt.

Accordingly, the present inventors completed the present invention after continuing research on a cosmetic composition that contains salt in a high concentration and can effectively demonstrate the stability and inherent efficacy of salt.

One embodiment is to provide a water-in-oil cosmetic composition that stably contains a high concentration of salt and has excellent stability, antibacterial activity, and preservative power.

Another embodiment is to provide a cosmetic product made by formulating the water-in-oil type cosmetic composition.

According to one embodiment, an oil component including a surfactant and oil; thickener; and an aqueous phase component including water, salt, and polyhydric alcohol, wherein the salt is included in an amount of 5 to 30 parts by weight based on 100 parts by weight of the water.

The salt may be included in an amount of 5 to 12 parts by weight based on 100 parts by weight of water.

The surfactant may be a polyglyceryl-based nonionic surfactant.

The surfactant may have an HLB (hydrophilic-lipophilic balance) of 6 or less.

The surfactant may be a polyglyceryl ester emulsifier having an HLB of 6 or less.

The surfactant may be included in an amount of 1% to 5% by weight based on the total amount of the composition.

The oil may be a hydrocarbon-based oil, an ester-based oil, or a combination thereof.

The thickener may include clay minerals.

The thickener may be included in an amount of 0.1% to 2% by weight based on the total amount of the composition.

The salt may be dissociated in the aqueous phase component.

The salt may include natural salt, refined salt, sun-dried salt, topan salt, re-salted salt, rock salt, processed salt, or a combination thereof.

Another embodiment may be a cosmetic product made by formulating the water-in-oil type cosmetic composition.

The water-in-oil cosmetic composition according to one embodiment stably contains a high concentration of salt, and can provide cosmetics with excellent stability, antibacterial activity, and preservative power.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein.

In this specification, when a part of a layer, membrane, region, plate, etc. is said to be “on” another part, this includes not only the case where it is “right on” the other part, but also the case where there is another part in between. Conversely, when a part is said to be “right on top” of another part, it means that there is no other part in between.

Unless otherwise defined herein, “combination” means mixing or copolymerization. Additionally, “copolymerization” refers to block copolymerization to random copolymerization, and “copolymer” refers to block copolymerization to random copolymerization.

Hereinafter, a water-in-oil cosmetic composition according to one embodiment will be described.

A water-in-oil cosmetic composition according to one embodiment includes an oil phase component including a surfactant and oil; thickener; and an aqueous phase component including water, salt, and polyhydric alcohol, wherein the salt is included in an amount of 5 to 30 parts by weight based on 100 parts by weight of the water.

Conventional cosmetic compositions containing salt, especially water-in-oil cosmetic compositions, contain only a very small amount of salt due to the problem of salt precipitating in the water phase, even though they are intended to contain a high concentration of salt. Furthermore, because it contains salt, it was inevitable to use excessive amounts of preservatives and silicone-based ingredients for stability. Preservatives and silicone-based ingredients also became a problem in that they reduced consumers' sense of security in using the product.

The water-in-oil type cosmetic composition according to one embodiment includes an oil phase component, a thickener, and an aqueous phase component, and the salt contained in the aqueous phase component is 5 to 30 parts by weight, for example, based on 100 parts by weight of water contained in the aqueous phase component. Contained in an amount of 5 to 12 parts by weight, it contains salt at a higher concentration than conventional salt-containing cosmetic compositions, and the aqueous component further includes polyhydric alcohol, which can greatly improve the preservative power and formulation stability of the composition. If salt is included in less than 5 parts by weight compared to 100 parts by weight of water, the efficacy of salt (removing skin waste, removing dead skin cells, anti-inflammatory, improving atopy symptoms, moisturizing, etc.) is not exerted, so it is difficult to say that salt is contained in a high concentration. If more than 30 parts by weight of salt is included compared to 100 parts by weight of water, there is a problem of reduced stability.

For example, the surfactant used in the water-in-oil cosmetic composition according to one embodiment may be a polyglyceryl-based nonionic surfactant.

Additionally, the thickener used in the water-in-oil cosmetic composition according to the above embodiment may include a clay mineral.

When polyglyceryl-based nonionic surfactants and clay minerals are used as the surfactant and thickener, respectively, a high concentration of salt can be stably contained in the water-in-oil cosmetic composition according to one embodiment.

Furthermore, the surfactant may be a compound with an HLB (hydrophilic-lipophilic balance) of 6 or less, for example, a polyglyceryl ester emulsifier with an HLB of 6 or less. When used with clay minerals, the surfactant may be a water 100 Even if only 5 to 12 parts by weight of salt is included compared to parts by weight, excellent preservative power can be realized while having the same level of effect as when salt is included at a higher concentration, so no separate preservative can be used, which is the ultimate solution. This can increase the sense of security of consumers who are sensitive to the ingredients of cosmetic compositions.

For example, the surfactant is Polyglyceryl-2 Sesquioleate, POLYGLYCERYL-10 PENTAOLEATE, and POLYGLYCERYL-5 HEXASTEARATE. ), polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate copolymer (POLYGLYCERYL-4 DIISOSTEARATE/POLYHYDROXYSTEARATE/SEBACATE), diisostearyl polyglyceryl-3 dimer dilinoleate (DIISOSTEAROYL POLYGLYCERYL -3 DIMER DILINOLEATE) or a combination thereof can be used, but is not necessarily limited thereto. For example, the surfactant may be a mixture of two or more of the above-mentioned ingredients.

The surfactant may be included in an amount of 1% to 5% by weight based on the total amount of the composition. If the surfactant is included in less than 1% by weight of the total amount of the composition, there is a problem with stability over time, such as separation of the emulsion, and if it is included in more than 5% by weight, the stability improves, but the feeling of use is significantly worse. there is.

The thickener is an ingredient that controls fluidity and affects stability when manufacturing a water-in-oil cosmetic composition according to one embodiment, and includes hectorite, bentonite, magnesium aluminum silicate, montmorillonite, and quaternium-18 hecto. It may include light, quaternium-18 bentonite, stearalkonium bentonite, disteadimonium hectorite, or a combination thereof, but is not necessarily limited thereto.

The thickener may be included in an amount of 0.1% to 2% by weight based on the total amount of the composition. If the thickener is included in less than 0.1% by weight based on the total amount of the composition, it is insufficient to sufficiently stabilize the matrix (emulsifying component) of the external wound, and if the thickener is included in more than 2% by weight based on the total amount of the composition, the fluidity during manufacturing may be reduced. Not only does it fall significantly, making it difficult to manufacture, but it also reduces the feeling of use, making it less valuable as a cosmetic.

The oil may include hydrocarbon-based oil, ester-based oil, or a combination thereof. For example, the oil may be a hydrocarbon-based oil such as natural oil, an ester-based oil, or a combination thereof.

The salt may include natural salt, natural salt, refined salt, sun-dried salt, topan salt, re-salted salt, rock salt, processed salt, or a combination thereof.

The salt is dissociated into the aqueous phase component. The term "dissociation" refers to dissolution and separation. The salt is dissolved in the aqueous phase component and separated into ions, which means that the salt crystals lose their particle nature.

In addition to salt, the water-soluble component further includes polyhydric alcohol, and may further include various water-soluble components such as polymer compounds, urea, and moisturizers that can provide skin moisturization, nutrition, feeling of use, low-temperature stability, and efficacy.

The aqueous component may be included in an amount of 30% to 85% by weight, for example, 50% to 70% by weight, based on the total amount of the composition according to one embodiment. If the aqueous phase component is included in less than 30% by weight of the total amount of the composition, the feeling of use of the cosmetic composition is significantly reduced, and if it is included in more than 85% by weight, low-temperature stability is significantly reduced, making it difficult to manufacture cosmetics.

The polyhydric alcohol has an excellent preservative effect and can also provide an excellent moisturizing effect. For example, the polyhydric alcohols include glycerin, dipropylene glycol, butylene glycol, pentylene glycol, methylpropanediol, sorbitol, diglycerin, erythritol, pentaerythritol, polybutylene glycol-10, and polyglycerin-3. , polyglycerin-4, polyglycerin-6, polyglycerin-10, polyglycerin-20, polyglycerin-40, sorbet-5, sorbet-6, sorbet-20, sorbet-30, sorbet-40 , inositol, maltitol, maltose, mannan, mannitol, mannose, lactitol, lactose, dihydroxypropyl PG-glucoside, dithioctanediol, fructose, glucamine, methylglucamine, glucose, 1,2-hexane It may include diol, methylglucet-10, methylglucet-20, ozonized glycerin, phytantriol, thioglycerin, threitol, trimethylolpropane, xylitol, or a combination thereof, but is not necessarily limited thereto. no. Two or more types of the above polyhydric alcohols may be mixed, or one type may be used individually. For example, the polyhydric alcohol may include glycerin, butylene glycol, propylene glycol, or a combination thereof.

The polyhydric alcohol may be included in an amount of 5% to 15% by weight based on the total amount of the water-in-oil cosmetic composition according to one embodiment.

In addition to the ingredients described above, the water-in-oil cosmetic composition according to one embodiment may further include a stabilizer, sunscreen, fragrance, antioxidant, or pH adjuster.

In addition, the water-in-oil cosmetic composition according to one embodiment may further include ingredients known to be effective in improving skin, such as disodium phenyldibenzimidazoletetrasulfonate, diosmethin, magnesium ascorbyl phosphate, and mace. Lignan, white chestnut oil, butyl methoxydibenzoyl methane, bis-ethylhexyloxyphenol mecoxyphenyltriazine, Peach tree seed extract, acetylphytosphingosine, ascorbyl glucoside, asiaticoside, arbutin, ethyl ascorbyl ether, Chilhexyl methoxycinnamate, ethylhexyl triazone, ethylhexyl salicylate, octocrylene, oil-soluble licorice extract, peony extract, ginsenoside al, zinc oxide, titanium oxide, polydatin, polyethoxylated retinamide. , frangenidin, hydroxyproline, arbutin, homosalate, human oligopeptide-1, Mary Road extract, Afanizominanphlossaqua extract, Prickly pear cactus extract, H. prickly pear extract, fox bead extract, polyethoxylated letin. Includes, but is not limited to, amides, polydatin, kinetin, aminobutyric acid, oligopeptide-2, white paper extract, peony extract, blueberry extract, ginseng extract, or fermented sugar cane extract.

The water-in-oil cosmetic composition according to one embodiment can be formulated and manufactured into cosmetics such as lotions, creams, face wash cosmetics, packs, foundations, makeup bases, etc., and can be formulated according to a conventional manufacturing method. .

That is, another embodiment provides a cosmetic product made by formulating the water-in-oil type cosmetic composition.

Another embodiment includes water, salt, and polyhydric alcohol, wherein the salt is an aqueous component contained in an amount of 5 to 30 parts by weight based on 100 parts by weight of the water, an oil phase component including a surfactant and oil, and a thickener. Provided is a method for producing a water-in-oil type cosmetic composition comprising the step of adding an agent.

More specifically, mixing an oily component including a surfactant and oil and a thickener; It includes adding and mixing salt water and polyhydric alcohol contained in an amount of 5 to 30 parts by weight based on 100 parts by weight of water to the mixture of the oil phase component and the thickener.

Another embodiment provides a method of improving skin by applying the water-in-oil type cosmetic composition to the skin.

The term “skin improvement” includes all useful effects of salt on the skin, and may include, for example, moisturizing, relieving various skin problems (skin soothing), removing skin waste and exfoliation, and improving acne, wrinkles, and atopic dermatitis.

The water-in-oil cosmetic composition according to one embodiment can be applied to the skin at least once per day, and can be applied in a daily cycle, and is preferably absorbed into the skin after application.

Hereinafter, the contents of the present invention will be described in more detail through examples and comparative examples. These examples are provided to understand the content of the present invention, but the scope of the present invention is not limited to these examples and test examples, and modifications, substitutions, and insertions commonly known in the art can be performed. It can be done, and this is also included in the scope of the present invention.

(Example)

Manufacturing example: Preparation of cosmetic composition

A cosmetic composition in the form of a lipstick formulation was prepared according to the composition in Tables 1 and 2 below. Specifically, the raw materials shown in Tables 1 and 2 below were weighed and dissolved by heating at 85°C, and then the dissolved product was stirred with a homogenizer to prepare a mixture. Then, after degassing the mixture, it was cooled to 20°C to prepare Examples 1 to 6 and Comparative Examples 1 to 6.

(Unit: weight%) Example One 2 3 4 5 6 Oily ingredients POLYGLYCERYL-4 DIISOSTEARATE/POLYHYDROXYSTEARATE/SEBACATE One One One One One - DIISOSTEAROYL POLYGLYCERYL-3 DIMER DILINOLEATE One One One One One - CETYL PEG/PPG-10/1 DIMETHICONE - - - - - 2 Hydrocarbon/ester oil 12 12 12 12 12 12 thickener DISTEARDIMONIUM HECTORITE 0.5 0.5 0.5 0.5 0.5 0.5 Water Ingredients water To 100 To 100 To 100 To 100 To 100 To 100 sodium EDTA 0.04 0.04 0.04 0.04 0.04 0.04 Sodium chloride (NaCl) 8 12 17 3.5 9 8 Glycerine 10 10 10 10 10 10

(Unit: weight%) Comparative example One 2 3 4 5 6 Oily ingredients POLYGLYCERYL-4 DIISOSTEARATE/POLYHYDROXYSTEARATE/SEBACATE One One One One One One DIISOSTEAROYL POLYGLYCERYL-3 DIMER DILINOLEATE One One One One One One Hydrocarbon/ester oil 12 12 12 12 12 12 thickener DISTEARDIMONIUM HECTORITE 0.5 0.5 0.5 0.5 0.5 0.5 Water Ingredients water To 100 To 100 To 100 To 100 To 100 To 100 sodium EDTA 0.04 0.04 0.04 0.04 0.04 0.04 Sodium chloride (NaCl) 20 - 12 One 3 18 Glycerine 10 10 0 10 10 10

Test Example 1: Evaluation of antibacterial activity

When checking the antibacterial activity of salt (NaCl) itself, which is an essential ingredient, it was confirmed that a water-in-oil cosmetic composition containing more than the salt content shown in Table 3 below has sufficient potential to kill the bacteria.

Antibacterial activity was measured using the Minimum inhibitory concentration (MIC) test method, and the plate inoculated with bacteria was cultured for 48 to 72 hours and the minimum concentration without bacterial growth was confirmed.

P. aeruginosa E. coli C. albicans A. niger Salt content (parts by weight) per 100 parts by weight of water 7.5 15 7.5 7.5

From Table 3, it can be seen that the water-in-oil cosmetic composition according to one embodiment has antibacterial activity against all four types of bacteria.

Test Example 2: Stability evaluation

Examples 1 to 6 and Comparative Examples 1 to 6 prepared in the above Preparation Examples were each stored in a constant temperature bath at the temperatures shown in Table 4 below for 1 month to visually observe changes in the composition, and the results were It is shown in Table 4 below.

Stability evaluation criteria

○: Stable (no salt precipitation)

△: Small amount of salt precipitated

×: Excessive salt precipitation

Example Comparative example One 2 3 4 5 6 One 2 3 4 5 6 45℃ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ 30℃ ○ ○ ○ ○ ○ ○ × ○ ○ ○ ○ ○ 5℃ ○ ○ ○ ○ ○ △ × × × ○ ○ × -15℃ ○ △ △ ○ △ × × × × ○ ○ ×

From Table 4, it can be seen that Examples 1 to 6 (especially Examples 1 and 4) have better stability at high and low temperatures than the compositions according to Comparative Examples 1 to 6.

Test Example 3: Water activity and preservative power

The water activity and preservative power against standard bacteria were evaluated for the composition whose stability was secured in Test Example 2, and the results are shown in Table 5 below.

Water activity was measured using a meter (AQUALAB Tunable Diode Laser Water Activity Meter, Decagon Devices, USA).

The preservative power test method and evaluation were conducted based on ISO11930, and the standard strains are as follows.

bacteria

Strain name Pseudomonas aeruginosa Escherichia coli Staphylococcus aureus

leaven

Strain name Candida albicans

mold

Strain name Aspergillus brasiliensis (formerly A. niger)

Preservative power evaluation criteria

A: Excellent preservative power

B: Insufficient preservative power

C: Poor preservative power (cannot be used as a product)

Example Comparative example One 2 3 4 5 4 5 water activity 0.89 0.84 0.79 0.90 0.83 0.97 0.93 preservative power A A A B A C C

From Table 8, it can be seen that Examples 1 to 4 have excellent preservative properties, and that Comparative Examples 4 and 5 cannot be applied to products without additional preservatives.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements can be made by those skilled in the art using the basic concept of the present invention as defined in the following claims. It falls within the scope of invention rights.

Claims (12)

Oily ingredients including surfactants and oils;
thickener; and
aqueous components including water, salt, and polyhydric alcohol;
Including,
The salt is included in an amount of 5 to 12 parts by weight based on 100 parts by weight of the water,
The surfactant includes Polyglyceryl-2 Sesquioleate, POLYGLYCERYL-10 PENTAOLEATE, POLYGLYCERYL-5 HEXASTEARATE, POLYGLYCERYL-4 DIISOSTEARATE/POLYHYDROXYSTEARATE/SEBACATE, diisostearyl polyglyceryl-3 dimer dilinoleate (DIISOSTEAROYL POLYGLYCERYL-3 DIMER DILINOLEATE) or a water-in-oil type cosmetic composition containing a combination thereof. delete delete delete delete In paragraph 1:
A water-in-oil type cosmetic composition wherein the surfactant is contained in an amount of 1% to 5% by weight based on the total amount of the composition. In paragraph 1:
The oil is a water-in-oil cosmetic composition that is a hydrocarbon-based oil, an ester-based oil, or a combination thereof. In paragraph 1:
A water-in-oil type cosmetic composition wherein the thickener contains a clay mineral. In paragraph 1:
A water-in-oil type cosmetic composition wherein the thickener is contained in an amount of 0.1% to 2% by weight based on the total amount of the composition. In paragraph 1:
A water-in-oil type cosmetic composition in which the salt is dissociated from the aqueous component. In paragraph 1:
The salt is a water-in-oil type cosmetic composition comprising natural salt, refined salt, sun-dried salt, topan salt, re-salted salt, rock salt, processed salt, or a combination thereof. A cosmetic product made by formulating the water-in-oil cosmetic composition of any one of claims 1 and 6 to 11.