KR20130060618A - Mask composition with high coverage to skin - Google Patents

Abstract

PURPOSE: A mask composition is provided to form a thin film phase when applying on the face, to ensure tightness onto the skin, and to effectively deliver active ingredients without moisture loss. CONSTITUTION: A cosmetic mask composition contains an oil-in-water type emulsifying composition containing an aqueous phase and an oil phase. A wash-off type mask composition contains sodium polyacrylate particles which are crosslinked in the aqueous phase. The oil-in-water type emulsifying composition contains: the aqueous phase containing 0.5-2.0 wt% of crosslinked sodium polyacrylate, 1.0-20.0 wt% of a moisturizer, and remaining amount of water; and the oil phase containing 0.1-5.0 wt% of an emulsifier and 1.0-20.0 wt% of oil. [Reference numerals] (AA.EE) Water phase; (BB,DD) Oil phase; (CC) Crosslinked sodium polyacrylate; (FF) Expanded crosslinked sodium polyacrylate

Description

Mask composition with high coverage to skin flexion {Mask composition with high coverage to skin}

The present invention relates to a mask composition that forms a thin film phase upon application of the skin and is applied according to the curvature of the skin and improves adhesion to the skin, and can effectively deliver the active ingredient in the mask composition to the skin without losing moisture.

The skin is divided into three layers of epidermis, dermis, and subcutaneous fat tissue in order from the outside, and protects the human body from physical and chemical stimuli from the external environment. Especially, the skin has about 65 ~ It controls the evaporation of 70% moisture out of the body.

Among them, the epidermis is divided into the stratum corneum, granule layer, polar layer, and basal layer from the outside. The stratum corneum of the epidermis contains about 10 to 20% of water and exists at the outermost part of the human body, thereby suppressing evaporation of moisture from the body. On the other hand, it prevents excessive infiltration of substances from outside ( J. Invest , Dermatol . 80 (Suppl.), 44-49. 1983).

The cells constituting the stratum corneum have high concentrations of natural moisturizing factor (NMF), which are water-soluble ingredients, which help the skin to show flexibility and maintain proper moisture ( J. Invest . Dermato . 54, 24-31, 1970).

However, due to changes in the environment or life patterns, various stresses and environmental pollution from social life, frequent facial cleansing due to makeup habits, and natural skin aging due to increased strength, moisture in the stratum corneum decreases and the skin dries. As the surface becomes rough and the skin loses its shine and dull appearance occurs, the problem about skin moisturizing is getting more and more important.

In general, cosmetics are used by applying, spraying, or other similar methods to keep skin or hair clean, beautified, or healthy, and are distinguished from drugs by their slight effect on the human body. .

Since the skin of the human body varies depending on various factors, such as individual, site, season, age, etc., the cosmetics are also suitable for the purpose of use, such as detergents, lotions, emulsions and creams. It has evolved into a form.

Among these various cosmetic products, the basic cosmetics group, which is not intended for makeup but for nutrition and whitening, is also subdivided into skin lotion, oil lotion, essence, nutrition cream, massage cream, pack, and mask. do.

Among them, a mask product is a cosmetic that has a myriad of effects such as intensive moisturizing effect and skin beauty and nutrition supply effect of the active ingredient at once.

On the other hand, in recent years, due to the increased economic margins and thus increased interest in beauty, consumer demand for cosmetic compositions for the product of the increased effect of the product is increasing.

However, so far, mask products are largely divided into a paste type and a sheet type.

The paste type is a type in which a pack agent is applied onto the skin and then peeled off when it forms a film film on the skin while it is dried. In the case of the paste type, the film formed on the skin is easy to remove because it is flexible and not easily broken, but there is a problem that the film cannot be removed at one time and is broken.

In addition, the sheet type is a type of immersing a cosmetic liquid with an active ingredient on a support such as a non-woven fabric, and if the amount of the cosmetic liquid is large, the cosmetic liquid flows down the face, and if the amount of the cosmetic liquid is small, the skin adhesion is inferior. In particular, in the case of the sheet type, it is difficult to effectively adhere to the skin flexion site, so that the penetration of the active ingredient is not evenly performed.

Patent Publication No. 2007-0014485 proposes a hydrogel form mask pack by mixing cellulose, agar and alginic acid in an aqueous solution of silk fibroin to form a hydrogel form, suggesting that the mask pack has improved moisture retention, flexibility, and skin adhesion. have.

Patent Publication No. 2007-0014485

In order to solve the above problem, the present invention is a multi-faceted study to provide a pack composition of a new composition having the advantages of both paste and sheet mask pack, by adding a polymer particle having a granular form to the water phase For the purpose of providing a mask composition which is present in an emulsified form during preservation, is formed according to the curvature of the skin by forming a thin film upon application of the skin without using a film former, and can improve the adhesion to the skin. do.

It is another object of the present invention to provide a wash-off type mask composition which can be easily washed and removed with water, including the oil-in-water emulsion composition.

In order to achieve the above object, the present invention provides a mask composition comprising an oil-in-water emulsified composition consisting of an aqueous phase and an oil phase,

It provides a wash-off type mask composition comprising sodium polyacrylate particles crosslinked to the water phase.

The mask composition according to the present invention is present in an emulsified form at the time of preservation, is formed according to the curvature of the skin by forming a thin film on application of the skin, and the adhesion to the skin can be improved, so that the active ingredient in the mask composition without loss of moisture Effectively delivers to the skin.

Such a mask composition is a wash-off type which can be easily removed by washing with water, and thus separate use is simple compared with a mask of a conventional sheet type.

1 is a view visually representing the configuration of a mask composition according to the present invention.
2 is a view showing a skin coating state of a pack of a conventional sheet type and the mask composition of the present invention.

Hereinafter, the present invention will be described in more detail.

The present invention provides a mask composition having the advantages of both a paste type that can be applied to the bent portion of existing skin and a sheet type with a low loss of active ingredients for skin care.

When the mask composition is stored, it has an emulsified composition form like a paste type, and forms a thin film when applied to the skin to form a sheet.

The mask composition is an oil-in-water emulsion composition consisting of an aqueous phase part and an oil phase part, and particularly includes sodium polyacrylate particles crosslinked in the aqueous phase part to secure the above-described effect.

Sodium polyacrylate is usually used as a thickener for increasing the viscosity in the cosmetic composition, does not exert more than the effect of increasing the viscosity, is applied in a state completely dissolved in water in the water phase of the emulsion composition.

However, the present invention uses a crosslinked sodium polyacrylate to have a degree of crosslinking of a predetermined level or more, and is introduced into a swelling state in the water phase in the form of particles (or granules) rather than dissolved in water. do.

1 is a view visually expressing the configuration of a mask composition according to the present invention, Figure 2 is a view showing a skin coating state of the conventional sheet type pack and the mask composition of the present invention.

Referring to FIG. 1, a mask composition is prepared by mixing an emulsion composition including an aqueous phase portion and an oil phase portion and crosslinked sodium polyacrylate particles, wherein the crosslinked sodium polyacrylate particles are wetted with water in the aqueous phase portion. Wetting is present in a swollen swelling state. The crosslinked sodium acrylate particles in the swelling state are present in a paste formulation, and when applied to the skin, are uniformly applied according to the skin curvature, as shown in FIG. 2, to reduce the loss of active ingredients, such as moisture, in the mask composition. Minimizing and intensively maximizing the penetration of active ingredients into the skin.

At this time, as shown in Figure 2, the crosslinked sodium polyacrylate forms a thin film over the entire skin by the arrangement of the swollen particles, which is different from the film form by the film former. In other words, the formation of the film by the film-forming agent is a cumbersome task of removing the film upon removal of the mask composition, but the mask composition according to the present invention is simply removed by washing with water since the compositions are not cured or bonded to each other. can do.

The crosslinked sodium polyacrylate is used that is cross-linking density is adjusted so that the swelling is not dissolved in the aqueous phase portion, preferably, the cross-linking density is 5 It has a range of -50%. In this case, the crosslinking is not particularly limited in the present invention, and all known crosslinking methods, for example, a method of applying heat or irradiating radiation may be used.

The crosslinked sodium polyacrylate has a particle form, in which the particles increase in size to 50-100 times the size when swollen by water in the aqueous phase. In order to achieve a stable dispersion phase in the emulsion composition and to secure the effects described above, the crosslinked sodium polyacrylate particles have a size of 150 to 400㎛ diameter. If the particle size is less than the above range, even when swelling, the spacing between the particles is wide, making it difficult to form a uniform film during skin application. On the contrary, if the particle size exceeds the above range, the viscosity becomes high and the skin is not easily applied. Such particles may be prepared by conventional molding processes, and are not particularly limited in the present invention.

The crosslinked sodium polyacrylate presented in the present invention is used at 0.5 to 2.0% by weight in the total composition. If the content is less than the above range, even if it is applied to the skin, it is not easy to form a film to cause loss of active ingredients or moisture in the mask composition, on the contrary, if it exceeds the above range, the viscosity is increased, so that a stable dispersed phase is difficult and uniformly applied to the skin. Since it does not, it uses suitably within the said range.

Preferably, the oil-in-water mask composition according to the present invention comprises the following compositions a) and b) to satisfy a total of 100% by weight:

a) iii) 0.5-2.0 wt% of crosslinked sodium polyacrylate,

   Ii) 1.0 to 20.0% by weight of a moisturizer, and

   Iii) water part containing water as balance

b) iv) 0.1 to 5.0% by weight of emulsifier, and

   Ii) an oil phase comprising from 1.0 to 20.0% by weight of oil.

Usable humectants include polyhydric alcohols such as glycerin, erythritol, xylitol, maltitol glycerin, propylene glycol, 1,3-butylene glycol, sorbitol, polyglycerin, polyethylene glycol, 1,2-pentanediol and isoprene glycol; Ingredients such as amino acids, sodium lactate, sodium pyrrolidone carboxylate, xyloglucan, quince seed, carrageenan, pectin, met, cranlan, galactan, delmantan sulfate, glycoken, keratan sulfate, chondroitin, mucoy Tin Sulfate, Keratosulfate, Chondroitin, Mucoitin Sulfate, Keratosulfate, Locust Bean Gum, Succinoglucan, Caronym Acid, Hyaluronic Acid, Heparan Sulfate, Sodium Hyaluronate, Collagen, Mucopolysaccharide, Chondroitin Water-soluble high molecular materials which are sulfuric acid; Silicones which are dimethylpolysiloxane and methylphenylsiloxane; Culture supernatant of lactic acid bacteria and bifidobacteria; And a combination of these.

Emulsifiers include sorbitan trioleate, sorbitan tristearate, glycerol monooleate, glycerol monostearate, glycerol monolaurate, sorbitan sesquioleate, sorbitan monooleate, sorbitan monostearate, polyoxy Ethylene stearyl ether, polyoxyethylene sorbitol beeswax derivative, polyoxyethylene stearyl ether, polyoxyethylene sorbitol beeswax derivative, PEG 100 stearate / glyceryl stearate, PEG 200 dilaurate, sorbitan monopalmitate, polyoxy Ethylene (3.5) nonyl phenol, PEG200 monostearate, sorbitan monostearate, sorbitan monolaurate, PEG 400 dioleate, polyoxyethylene monostearate, polyoxyethylene sorbitol lanolin derivatives, polyoxyethylene (12) Uryl ether, PEG 1500 dioleate, polyoxyethylene Laurate and the like.

The oil is not particularly limited in the present invention, and any oil conventionally used in this field is possible. Typically, the oil may be an oil commonly used in the art so as to dissolve the wax sufficiently. Typically, hydrocarbon-based oils including polydecene and paraffin oil; Ester synthetic oils including cetylethylhexanoate, glyceryl trioctanoate, octyldodecyl myristate, isopropyl palmitate, isopropyl myristate and octyl palmitate; Silicone oils including cyclomethicone, dimethicone; Animal oil; Vegetable oils including mango butter, shea butter, copoa seed seed butter, and macadamia seed oil; Ethoxylated alkyl ester oils; cholesterol; Cholesteryl sulfate; Phytosphingosine; Sphingoidoid lipids; One selected from the group consisting of C10 to C40 fatty alcohols such as batyl alcohol, behenyl alcohol, cetostearyl alcohol, cetyl alcohol, stearyl alcohol, caprylic / capric triglyceride, ceramide and mixtures thereof can be used. .

In addition, additives such as water-soluble / soluble physiologically active ingredients, emollients, preservatives, pH adjusting agents, fatty acids, emulsifiers, surfactants, antioxidants, sunscreens, pigments, dyes, flavorings, stabilizers, etc., as are known in the art, if necessary. May be further added, and the type and content thereof may be appropriately selected by those skilled in the art.

The water-soluble and oil-soluble physiologically active ingredient is not particularly limited in the present invention, and all known active ingredient may be used. In one example, as the physiologically active component having a whitening effect, oil soluble components including oil soluble licorice, ethyl ascorbyl ether, α-bisabolol, and the like are possible. In addition, active ingredients having an anti-wrinkle effect may be oil-soluble ingredients such as retinol and derivatives thereof (eg, retinyl palmitate), adenosine and the like. Such water-soluble and oil-soluble physiologically active ingredients are preferably used in the range of 0.001 to 10.0% by weight .

The manufacturing method of the mask composition which concerns on this invention is not specifically limited, The emulsifying method used normally can be used.

The mask composition described above

S1) preparing a water phase by adding crosslinked sodium acrylate particles and a moisturizer to water;

S2) preparing an oil phase by adding an emulsifier to the oil; And

S3) The oil phase part is added to the water phase part and then prepared through mixing.

The mixing process of S1), S2), and S3) is performed in a vacuum emulsification tank capable of temperature control and stirring by a conventional method, and stirring and heating are performed as necessary.

For example, the water phase is heated to 50 to 80 캜, preferably 65 to 75 캜, and the oil phase is heated to 50 to 80 캜, preferably 65 to 75 캜 to sufficiently dissolve other components in the oil .

The stirring is carried out in a vacuum emulsification tank at a speed of 2000 to 4000 rpm, preferably 3000 rpm for 3 to 10 minutes using a homomixer.

The mask composition prepared through these steps may be used as a cosmetic product having various formulations, preferably a formulation such as cream, lotion, gel, milk, and more preferably used as a cream formulation.

In addition, the compositions of each formulation may contain various bases and additives necessary and appropriate for the formulation of the formulation, and nonionic surfactants, silicone polymers, extender pigments, fragrances, preservatives, Fungicides, oxidation stabilizers, organic solvents, ionic or nonionic thickeners, softeners, antioxidants, free radical destroyers, opacifiers, stabilizers, emollients, silicones, α-hydroxy acids, antifoams, humectants, And known compounds such as vitamins, insect repellents, fragrances, preservatives, surfactants, anti-inflammatory agents, substance P antagonists, fillers, polymers, propellants, basicizing or acidifying agents, or coloring agents.

[Example]

Hereinafter, the present invention will be described in detail through examples. The examples are intended to illustrate the invention in more detail and the scope of the invention is not limited to these examples.

( Example  And Comparative example ) Emulsion Composition

Emulsified compositions were prepared according to the methods given below with the compositions of Table 1 below.

First, the aqueous phase and the oil phase was completely dissolved by heating to 70 ℃ and then added the oil phase to the aqueous phase at 70 ℃ after stirring by using a homo mixer for 3000rpm, 5 minutes and then cooled to room temperature to prepare an emulsion composition.

Composition (% by weight) Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Water top water Remainder Remainder Remainder Remainder Remainder Remainder Remainder glycerin 10 10 10 10 10 10 10 Crosslinked sodium polyacrylate * 0.05 1.0 2.0 0.01 3.0 - - Sodium Polyacrylate ** 0 0 0 One - 1.0 - Floating PEG-100 stearate 2 2 2 2 2 2 2 Glyceryl stearate One One One One One One One Squalane 10 10 10 10 10 10 10

week)

*: Crosslinked Sodium Polyacrylate: HS-3500, Songwon

**: Sodium Polyacrylate: Carbopol-940, Lubrizol

( Experimental Example  1) the emulsion composition state and Brittle  Confirm

After visually confirming the state of the oil-in-water emulsified composition prepared in Examples and Comparative Examples, it was applied to the skin (back of the hand) to measure the applicability.

The emulsifying composition of Example 1 formed a film like pack as soon as it was applied to the entire skin as a pack. This emulsified composition had a form in which the rounded grains were uniformly dispersed, and it was confirmed that the emulsified composition was applied with a soft feeling even when applied to the skin.

In comparison, the emulsified composition of Comparative Example 1 having a low content of crosslinked sodium polyacrylate did not apply well to the skin, and the emulsified composition of Comparative Example 2 having a too high viscosity had too high a viscosity. Showed poorly applied results.

In addition, in the case of Comparative Example 3 using uncrosslinked sodium polyacrylate, it can be seen that round granules are not formed and the pack does not function.

In the case of Comparative Example 4 without the use of the crosslinked / uncrosslinked sodium polyacrylate, it did not flow out of the skin like a lotion to form a pack.

( Experimental Example  2) Moisturizing  exam

In order to determine the skin moisturizing effect, it was carried out as follows using the compositions prepared in Examples 1-3 and Comparative Examples 1-4.

In order to determine the moisturizing power after skin application, 15 adult women in their 30s to 40s without skin disease were applied to each of the emulsified composition inside the lower arm of the lower arm, and skin moisture was measured using a skicon.

After cleaning the test site, mark the position and press the ski-cone on the skin constantly to measure the value (initial value). At this time, in order to reduce the error from the surrounding environment, maintain the constant temperature (20 ± 2 ℃) and constant humidity (50 ± 2%) and measure the value three times each and use the average value. The oil-in-water emulsion composition prepared in Examples and Comparative Examples was applied to the skin, packed for 10 minutes, and then moisturizing was measured. Each test value was expressed as an average value of the test results, and the results are shown in Table 2 below. Table 2 below shows the skin moisture retention of Examples 1-3 and Comparative Examples 1-4.

Skin Moisturizing Effect (μS) Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Initial value 32 53 49 48 46 42 41 After 10 minutes 346 411 406 196 243 173 98 Water retention 314 358 357 148 197 131 57

Referring to Table 2 above, all of the compositions of Examples 1 to 3, which are mask compositions according to the present invention, received good evaluation. However, in the mask compositions of Comparative Examples 1, 3, and 4, no film formation occurred after application of the skin, and the film flowed smoothly, and there was a feeling that water evaporated. Moreover, in the mask composition of the comparative example 2, although film formation existed, it was not uniform, and evenly moisturizing was not performed over the whole application site | part.

( Experimental Example  3) High temperature stability test

The emulsion compositions prepared in Examples and Comparative Examples were stored at room temperature, 45 ° C. and 40 ° C. for one month in a circulating (Cycling) thermostat, and the stability was observed according to the occurrence of hardness drop, oil flotation, and separation. It is shown in Table 3 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Room temperature Good Good Good Good Hardness drop Good Good 45 ° C Good Good Good Good detach Good Good cycle Good Good Good detach detach detach detach

Referring to Table 3, when the cross-linked sodium polyacrylate of Comparative Example 2 is excessively used it can be seen that the emulsion stability is greatly reduced due to excessive absorption of water in the mask composition.

( Experimental Example  4) sensory test

Satisfaction was evaluated through a panel test of the massage composition prepared through the above Examples and Comparative Examples and the results are shown in Table 4.

The evaluation was based on the following. (15 females in their 30s and 40s)

Very good .... 5 points

Good ... 4 points

Normal ..... 3

Bad ....... 2 points

Very bad..1 point

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 result 4.2 4.3 4.5 2.5 2.1 2.6 2.0

Looking at Table 4, it can be seen that the consumer's satisfaction with the composition prepared according to the present invention is high.

The oil-in-water mask composition according to the present invention is preferably applicable to various cosmetics, in particular packs.

Claims (7)

In the cosmetic mask composition comprising an oil-in-water emulsion composition consisting of an aqueous phase and an oil phase,
Wash-off type mask composition comprising sodium polyacrylate particles crosslinked in the water phase. The wash-off type mask composition according to claim 1, wherein the crosslinked sodium polyacrylate has a cross linking density of 5 to 50%. The wash-off type mask composition according to claim 1, wherein the crosslinked sodium polyacrylate particles have a size of 150 to 400 μm. The mask composition of claim 1, wherein the crosslinked sodium polyacrylate is included in an amount of 0.05 to 2.0 wt% in the total composition. The wash-off type mask composition of claim 1, wherein the oil-in-water emulsifying composition comprises a composition of a) and b) to satisfy a total of 100% by weight:
a) iii) 0.5-2.0 wt% of crosslinked sodium polyacrylate,
Ii) 1.0 to 20.0% by weight of a moisturizer, and
Iii) water part containing water as balance
b) iv) 0.1 to 5.0% by weight of emulsifier, and
Ii) an oil phase comprising from 1.0 to 20.0% by weight of oil. The mask composition of claim 1, wherein the mask composition forms a film after application to the skin. The wash-off type mask composition of claim 1, wherein the mask composition has a formulation of a cream, lotion, gel, or milk.

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