KR102095715B1 - Mask pack composition comprising a cellulose nanofiber - Google Patents

Abstract

The present invention relates to a mask pack composition, and relates to an emulsifier type mask pack composition comprising hydrophilic cellulose nanofibers having a carboxylic acid group.

Description

Mask pack composition comprising cellulose nanofibers {MASK PACK COMPOSITION COMPRISING A CELLULOSE NANOFIBER}

The present invention relates to a mask pack composition, and relates to an emulsifier type mask pack composition comprising hydrophilic cellulose nanofibers having a carboxylic acid group.

The mask pack generally used is a mask pack on a sheet that is impregnated with a base material of a non-woven fabric or a fiber material, such as cotton, and then contacted with the skin to maintain the cosmetic material for a certain period of time and then remove the base material. However, there was a discomfort such as flowing down without adhering to the skin until the sheet was dried. In addition, when the sheet is too dry, the moisture of the skin is evaporated, which has a bad effect on the skin, and the fibrous material used as a substrate is discarded after use, and thus is not environmentally good.

In addition, in order to improve the discomfort of the fiber material, a hardgel or cellulose gel type mask pack having improved adhesion to skin has been developed, but due to the soft and slippery material, the folded mask pack is attached to the skin by folding it into the packaging material. There are cases where tearing occurs in the unfolding process in order to make it, and depending on the user, there may be a feeling of objection to these materials, and there is still the inconvenience of discarding the remaining substrate after the cosmetic is absorbed.

In addition, the powder-form mask pack has a problem in that it is difficult to accurately improve the discomfort and the powder powder is blown, and it is difficult to match the mixing ratio when mixed with liquid or water.

In addition, the cream-type mask pack is not easily gelled or absorbed by the skin, and remains a creamy type for a long time, so there is an inconvenience of maintaining it for a long time after being applied to the skin.

Republic of Korea Registered Patent No. 10-1887950 (2018.08.07)

An object of the present invention is to provide a waterdrop type mask pack composition in which phase separation occurs by applying a shearing force when applied to the skin as an emulsifier type, having excellent adhesion to the skin, including hydrophilic cellulose nanofibers having a carboxylic acid group. Specifically, the water-drop formulation provides moisture to the skin, the texture of the gel is refreshing, and the feeling of use is light, and when applied to the skin, water droplets are generated by friction to deliver a feeling of fresh water to the skin, making the user visually satisfied. It is an object to provide a mask pack composition that can give.

Another object of the present invention is a two-pack mask pack composition comprising a first agent comprising a hydrophilic cellulose nanofiber having a carboxylic acid group and a second agent that gelates within minutes or tens of minutes to adhere to the skin. Purpose to provide.

Another object of the present invention is to provide a mask pack composition that is transparent when applied to the skin, does not have a visually objectionable feeling, and can be easily removed with a face wash.

One aspect of the present invention for achieving the above object includes an emulsifier and a first agent of an emulsifier type in which a water phase containing hydrophilic cellulose nanofibers and water having an oily and carboxylic acid group containing oil and water,

It is a mask pack composition having a mixing ratio of the oil phase and the water phase is 10 ~ 30: 70 ~ 90 weight ratio.

Since the mask pack composition of the present invention is an emulsifier type, it is easy to apply to the skin, and it is transparent after being applied to the skin, so there is no inconvenience to the user and an excellent moisturizing effect. In addition, it is possible to further moisturize the skin by the water drop formulation.

In addition, since it is possible to wash and remove it by washing, no waste is generated, and since cellulose nanofibers are naturally decomposed in water, there is less environmental pollution.

In addition, since the hydrophilic cellulose nanofibers have excellent dispersibility, there is an effect of maintaining long-term storage stability and dispersibility without using a separate thickener or the like.

In addition, when the first agent and the second agent are mixed, they are gelled within minutes to tens of minutes and are in close contact with the skin, so that the feeling of use is excellent.

Figure 1 shows the XRD analysis results of the film dried mask pack prepared according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail through specific examples or examples. However, the following specific examples or examples are only one reference for explaining the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms.

Also, unless defined otherwise, all technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the present invention is merely for effectively describing a specific embodiment and is not intended to limit the present invention.

Also, the singular form used in the specification and the appended claims may be intended to include the plural form unless otherwise indicated in the context.

The mask pack composition according to an aspect of the present invention specifically includes the following first aspect and second aspect, but is not limited thereto.

The first aspect of the mask pack composition of the present invention includes an emulsifier and a first agent in the form of an emulsifier in which an oil phase comprising an oil and an aqueous phase containing hydrophilic cellulose nanofibers having a carboxylic acid group and water are mixed, wherein the oil phase and the water phase The mixing ratio may be 10 to 30: 70 to 90 weight ratio.

The second aspect of the mask pack composition of the present invention may be a two-pack type mask pack composition comprising the first agent and a second agent of a water-phase formulation containing calcium salt.

In one aspect of the present invention, the first agent may be in the form of an emulsifier in the form of water-in-oil (W / O) or oil-in-water (O / W / O).

In one aspect of the present invention, the first agent may be a waterdrop type formulation in which phase separation occurs upon application of shear force.

In one aspect of the present invention, the emulsifier of the oil phase may include a silicone-based emulsifier.

In one aspect of the present invention, of the total weight of the oil phase, it may be one containing 25 to 35% by weight of emulsifier and 65 to 75% by weight of oil.

In one embodiment of the present invention, the hydrophilic cellulose nanofibers having a carboxylic acid group may be 3000 nm or less in length and 30 nm or less in diameter.

In one embodiment of the present invention, the hydrophilic cellulose nanofibers having a carboxylic acid group may be included in 0.1 to 10% by weight of the total content of the mask pack composition.

In one embodiment of the present invention, the hydrophilic cellulose nanofibers having a carboxylic acid group is a 2,2,6,6-tetramethyl-1-piperidine-oxy radical (TEMPO) catalyst for removing chaff fibers from which silica has been removed and sodium hypochlorite After oxidation using (NaOCl), it may be prepared by grinding.

In one aspect of the present invention, the second agent may include one or more calcium salts selected from calcium sulfate hydrate, calcium hydroxide, calcium acetate, calcium citrate, calcium chloride, and calcium lactate.

In one aspect of the present invention, the calcium salt may be included in 1 to 50% by weight of the total content of the second agent.

In one aspect of the present invention, the mask pack composition may be one containing the second agent in an amount of 5 to 30 parts by weight based on 100 parts by weight of the first agent.

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

The mask pack composition according to an aspect of the present invention may be made of a first agent of an emulsifier type containing a hydrophilic cellulose nanofiber having a carboxylic acid group in an aqueous phase. More specifically, it includes an emulsifier and a first agent in the form of an emulsifier mixed with an aqueous phase containing hydrophilic cellulose nanofibers having carboxylic acid groups and water containing an oil and water, and the mixing ratio of the oil phase and the aqueous phase is 10 to 30:70 It can be mixed in a weight ratio of ~ 90 to form an emulsifying agent in the form of water-in-oil (W / O) or water-in-oil (O / W / O), and a water drop type in which phase separation occurs due to shear force when the user applies it to the skin As it may be to give more moisturizing power. In addition, since the hydrophilic cellulose nanofiber having the carboxylic acid group serves as a substrate, there is an advantage in that it can be removed by washing the face after application without the need to use a separate fiber substrate, and it has the advantage of being less transparent and uncomfortable for the user.

In addition, it may be a two-pack type mask pack composition further comprising a second agent of the aqueous formulation containing the first agent and calcium salt, and the user mixes the first agent and the second agent before applying to the skin. It may be applied. Since the gelation is performed by mixing the first agent of the emulsifier type and the second agent of the water-phase formulation, evenly applied to the skin, the entire gelation proceeds, so that it can be closely adhered to the user's skin. May be that the gel formed by the ion coupling reaction with the second contained within the calcium salt the calcium ^ion-more specifically, the first claim cellulose carboxylate group (COO) of the nanofiber.

The two-pack type mask pack composition may be used in an amount of 5 to 30 parts by weight of the second agent relative to 100 parts by weight of the first agent. More specifically, with respect to 100 parts by weight of the first agent, the second agent may be used in 10 to 20 parts by weight, and is preferable because it can be gelled within a few minutes to tens of minutes in the above range, specifically 1 to 40 minutes. However, the content of the second agent may be adjusted according to the gelation time desired by the user, so it is not limited thereto.

Hereinafter, the first agent and the second agent will be described in more detail.

[No. 1]

In one aspect of the present invention, the first agent may be prepared by mixing the oil phase and the water phase in an emulsifier type in water-in-oil (W / O) or water-in-oil (O / W / O). In addition, the first agent may be a waterdrop type formulation in which phase separation occurs upon application of shear force.

The oil phase may include an emulsifier and an oil, and the water phase may include hydrophilic cellulose nanofibers having carboxylic acid groups and water. The mixing ratio of the oil phase and the water phase may be 10 to 30: 70 to 90 weight ratio, more specifically 15 to 25: 75 to 85 weight ratio. Water drop type emulsifiers in the above range can be produced, and when used, shear force is applied and water trapped in the silicon network and cellulose nanofibers burst out, giving the skin a natural feeling of moisture while forming a pack made of a transparent moisturizing film. have. That is, it may be applied as a creamy formulation, but after application, may form a pack so that moisture and functional substances are absorbed by the skin.

First, the oil phase of the said 1st agent is demonstrated.

The oil phase includes an emulsifier and an oil, and may further include additives that are commonly added in this field.

The emulsifier can be used without limitation as long as it is usually used in the field, but preferably, by using a silicone-based emulsifier, the dispersibility of the hydrophilic cellulose nanofibers having a carboxylic acid group included in the water phase may be further improved. Specifically, for example, PEG-10 Dimethicone / Vinyl Dimethicone Crosspolymer, Cetyl Page / Piji-10 / 1 Dimethicone (Cetyl PEG / PPG-10 / 1 Dimethicone) ), Lauryl PEG-8 Dimethicone, Dimethicone / PEG-10 / 15 Crosspolymer, Laurylpiage-9 Polydimethylsiloxy Ethyl dimethicone, PEG-9 polydimethylsiloxyethyldimethicone, lauryl PEG-10 tris (trimethylsiloxy) silylethyldimethicone, PEG / FIG-19 / 19dimethicone, P Any one or two or more mixtures or copolymers selected from EZ / FIG-18 / 18 dimethicone, PEG-10 dimethicone and sorbitan sesquioleate cyclopentasiloxane may be used.

The emulsifier may include 25 to 35% by weight, more specifically 27 to 33% by weight of the total weight of the oil phase. Since it can be manufactured in an incomplete emulsifier type in the above range, it can be prepared in a water drop type emulsifier type.

The oil may be used without limitation as long as it is used in the related art, specifically, vegetable oils such as jojoba oil, rose hip oil, sunflower oil, macadamia nut oil, meadow form seed oil and cocoa oil; Silicone oils such as cyclohexasiloxane, cyclomethicone, phenyltrimethicone, dimethicone, vinyldimethicone and diphenyldimethicone, cyclopentasiloxane; Ester oils; And mixtures of any one or two or more selected from hydrocarbon oils and the like.

The oil may be 65 to 75% by weight, more specifically 67 to 72% by weight of the total weight of the oil phase. Since it can be manufactured in an incomplete emulsifier type in the above range, it can be prepared in a water drop type emulsifier type.

More specifically, the oil phase is a crosslinking emulsifier such as PEG-10 Dimethicone / Vinyl Dimethicone Crosspolymer, a silicone oil, and more specifically, a cyclic silicone oil such as cyclopentasiloxane. When used in combination, it is easy to manufacture with emulsifiers in the form of water-in-oil (W / O) or oil-in-water (O / W / O), and it is possible to make such emulsifiers well maintained more stably and stable As a water-drop type formulation may be possible.

More specifically, for example, PEG-10 Dimethicone / vinyl dimethicone Crosspolymer (PEG-10 Dimethicone / Vinyl Dimethicone Crosspolymer) is contained in 30 to 35% by weight of the oil component, and the cyclic silicone oil is 50 to 50 By including it as 60% by weight, the emulsifying agent in the form of water-in-oil (W / O) or water-in-oil (O / W / O) can be more stably maintained, and can be stably manufactured as a water-drop type formulation. You can.

The oil phase may include, in addition to emulsifiers and oils, additives commonly added in this field of 5% by weight or less, specifically 0.1 to 5% by weight. The additive may further include squalene, vitamin A, stearic acid, hydrogenated polyisobutene, tocopheryl acetate, diethylhexyl carbonate, and preservatives.

Next, the above-mentioned award will be described in detail.

The water phase may be water, more specifically, purified water may be used as a main component, and may also include polyhydric alcohol. Specifically, for example, any one or two selected from the group consisting of 1,3-butylene glycol, glycerin, propylene glycol, pentylene glycol, sorbitol, polyethylene glycol, hexylene glycol and diglycerin The above mixture can be used.

In addition, the aqueous phase includes hydrophilic cellulose nanofibers having a carboxylic acid group.

More specifically, the aqueous phase may be composed of a first aqueous phase containing water and a polyhydric alcohol, and a second aqueous phase comprising hydrophilic cellulose nanofibers having a carboxylic acid group and water. In addition, if necessary, the first water phase and the second water phase are any one or two or more selected from additives, more specifically, for example, surfactants, functional additives, natural extracts, pH adjusting agents, fertilizers, etc., commonly used in the field. It may be further comprising a mixture.

The hydrophilic cellulose nanofibers having a carboxylic acid group may be those obtained from chaff fibers from which silica has been removed. More specifically, the hydrophilic cellulose nanofiber having a carboxylic acid group is a 2,2,6,6-tetramethyl-1-piperidine-oxy radical (TEMPO) catalyst for removing chaff fibers from which silica has been removed and sodium hypochlorite (NaOCl). After oxidation by using, it may be prepared by grinding.

The chaff fiber from which the silica has been removed may be obtained by cooking chaff to obtain a cooking residue and a cooking solution, and separating the solid solution to separate a cooking solution containing silica. More specifically, rice husks may be mixed with sodium hydroxide solution or ammonia solution in a ratio of 1 to 5 to 10 by weight, and subjected to cooking treatment under conditions of 60 to 200 ° C. More specifically, it may be to cook for 30 minutes to 200 minutes under conditions of 100 to 150 ℃. When the steaming treatment is performed in this way, the cooking solution containing silica is separated into the cooking solution residue containing rice husk fibers, and the rice husk fibers can be obtained by removing the cooking solution. By removing the silica component by cooking in this way, hydrophilic cellulose nanofibers having a carboxylic acid group can be more efficiently produced in a short time.

The hydrophilic cellulose nanofiber having the carboxylic acid group may be more specifically prepared as follows, but is not limited thereto.

a) bleaching chaff fibers from which silica has been removed;

b) re-hydrating the bleached chaff fiber by stirring it in distilled water;

c) NaBr, 2,2,6,6-tetramethyl-1-piperidine-oxy radical (TEMPO) catalyst and sodium hypochlorite (NaOCl) are added to the rehydrated chaff fiber, and the pH is 9 to 10. Reacting while adding NaOH aqueous solution to maintain;

d) when the reaction is completed, adding ethanol to terminate the reaction, followed by filtering;

e) placing the filtered fibrous cake in distilled water and stirring to rehydrate, followed by filtering again to obtain a fibrous cake; And

f) preparing a hydrophilic cellulose nanofiber having a carboxylic acid group by pulverizing the rehydrated fibrous case in distilled water;

It includes.

Specifically, in the step a), the bleaching may be using sodium hypochlorite (NaOCl), or may be reacted at room temperature.

The b) step may be to rehydrate the chaff fibers that have been dried after bleaching in distilled water for 2 to 5 hours. At this time, it may be to use 10 to 20 liters of distilled water per 100 to 150 g of chaff fiber, but is not limited thereto.

While continuously stirring in distilled water in step b), NaBr, 2,2,6,6-tetramethyl-1-piperidine-oxy radical (TEMPO) catalyst and sodium hypochlorite (NaOCl) are added as in step c). do. The NaBr content may be added at a content of 5 to 20 g per 150 g of the chaff fiber, and the TEMPO catalyst may be added at a content of 2 to 5 g per 150 g of the chaff fiber. In addition, the oxidation reaction may be performed by adding 12 wt% sodium hypochlorite (NaOCl) aqueous solution at 500 to 800 ml per 150 g of the chaff fiber. At this time, it is good to keep the pH in the reactor 9 ~ 10, it may be to add NaOH aqueous solution to maintain the pH. At this time, the reaction temperature may be performed at room temperature, specifically 10 to 40 ° C. The reaction time may be performed for 2 to 10 hours, more specifically 4 to 6 hours, but is not limited thereto.

Next, as in step d), when the reaction is completed, ethanol is added to terminate the reaction and filtered to separate fibers. The filtering may be filtering by a method such as a paper filter or centrifugation, but is not limited thereto. The fiber obtained at this time is milky white.

Thereafter, as in step e), the filtered fibrous cake is put into distilled water and stirred to rehydrate, and then filtered again to obtain a fibrous cake. At this time, the process of rehydration and filtering may be repeated several times so that impurities and the like are sufficiently removed. The fibrous Kate from which impurities are removed has a translucent color.

Then, as in step f), the rehydrated fibrous Kate is placed in distilled water and pulverized to prepare hydrophilic cellulose nanofibers having a carboxylic acid group. The pulverization is not particularly limited as long as it is a pulverizer used in the related field, and may be, for example, using a colloid mill equipment or the like. The grinding speed is not limited, but may be 3000 to 10000 RPM, more specifically 5000 to 6000 RPM. In addition, after crushing once, the pulverization may be repeated several times as necessary to prepare a thick, translucent gel-like water phase.

 The hydrophilic cellulose nanofiber having the carboxylic acid group is dispersed in water, and specifically, mixing with the aqueous phase of the first agent as a thick, translucent gel-like aqueous phase may further improve dispersibility.

The hydrophilic cellulose nanofibers having a carboxylic acid group may exist in a single microfibril form or may be in a form in which nanofibers are entangled with each other, but are not particularly limited thereto.

The hydrophilic cellulose nanofibers having a carboxylic acid group may have a length of 3000 nm or less and a diameter of 30 nm or less.

In addition, the hydrophilic cellulose nanofibers having a carboxylic acid group may be included in 0.1 to 10% by weight of the total content of the first agent, and more specifically, may be included in 0.5 to 9% by weight. In the above range, a cream-like mask pack composition having good spreadability can be provided, and after application to the skin, the cellulose nanofibers are evenly adhered to the skin and perform the same function as the base material, thereby moisturizing without the need to use a separate fibrous base material. Can be given.

The first agent may further include a natural extract as needed. The natural extract is a plant extract obtained by extracting a plant with water or a solvent, and may be used without limitation as long as it is commonly used in the field. More specifically, for example, it may be any one or two or more selected from gusset extract, green tea extract, and the like, but is not limited thereto. In addition to this, it may further include a functional additive, a moisturizing agent such as hyaluronic acid, a preservative, an antioxidant, a pigment, a colorant, and a flavoring agent. The additive may be added to 5% by weight or less, specifically 0.1 to 5% by weight of the total weight of the aqueous phase.

The method for preparing the first agent mixes the components included in the oil phase, mixes the components included in the water phase in a separate reactor, and then adds the water phase to the oil phase while stirring to add water-in-oil (W / O) may be prepared as a formulation.

Alternatively, after preparing the first aqueous phase containing water and polyhydric alcohol as the aqueous phase component, and the second aqueous phase comprising hydrophilic cellulose nanofibers having carboxylic acid groups and water, stirring the water phase while adding the first aqueous phase to the oil phase (W / O) After being prepared as a formulation, it may be prepared in an emulsifier in the form of water-in-oil-in-water (O / W / O) by stirring while adding the second aqueous phase in small portions.

More specifically, while the small amount of the first water phase is introduced at room temperature, the mixture is mixed for 5 to 30 minutes at 300 to 500 RPM, and when the oil phase starts collecting the water phase, the first water phase is injected little by little each time. When the first water phase is completely added, the mixing speed is increased to 2000 to 4000 RPM and mixed for 10 to 30 minutes to prepare a gel phase composition. Subsequently, a small amount of the second water phase was added thereto at room temperature while mixing at 300 to 500 RPM for 5 to 30 minutes to prepare an oil-in-water (O / W / O) type emulsifier. Thereafter, if necessary, a process of defoaming in a vacuum state may be further included.

At this time, the mixing temperature, agitation speed, and agitation time are not limited to the above-described conditions, and are generally adjustable in a range for preparing a cosmetic composition of a water drop formulation.

[No. 2]

In one aspect of the present invention, the second agent may be used without limitation as long as it is a water-soluble formulation containing a calcium salt for reacting with a carboxylic acid group of a hydrophilic cellulose nanofiber having a carboxylic acid group included in the first agent.

More specifically, for example, it may be an aqueous solution containing any one or more calcium salts and water selected from calcium sulfate hydrate (CaSO ₄ · 2H ₂ O), calcium chloride and calcium lactate. In addition, if necessary, alcohol may be included, and specifically, a group consisting of, for example, butylene glycol, glycerin, propylene glycol, pentylene glycol, sorbitol, polyethylene glycol, hexylene glycol, and diglycerin Any one or a mixture of two or more selected from can be used.

The content of the calcium salt in the second agent is not limited, but may be included in 1 to 50% by weight, more specifically 2 to 40% by weight of the total content of the second agent. It is preferable because the gelation time suitable for use by the user can be given in the above range.

Hereinafter, the present invention will be described in more detail based on Examples and Comparative Examples. However, the following examples and comparative examples are only examples for explaining the present invention in more detail, and the present invention is not limited by the following examples and comparative examples.

[Production Example 1]

The rice husk and sodium hydroxide solution were mixed at a weight ratio of 1: 6, and cooked at 130 ° C for 120 minutes. The cooking solution and the cooking residue were separated by compression, and the cooking residue was washed to obtain chaff fibers from which silica had been removed.

After washing the chaff fiber from which the silica had been removed, it was bleached using a 6% by weight aqueous NaClO solution at room temperature, and then washed and dried. After bleaching, 150 g of dried chaff was placed in 10 liters of distilled water and sufficiently rehydrated for 2 hours.

While continuing stirring in distilled water, 15 g of NaBr was added thereto, 3 g of a 2,2,6,6-tetramethyl-1-piperidine-oxy radical (TEMPO) catalyst was added, and 670.67 ml of 12 wt% NaClO aqueous solution was added. It was added and stirred by shaking the NaOH aqueous solution prepared in advance to adjust the pH of the aqueous solution to 10. At this time, the reaction temperature was performed at room temperature and reacted for 5 hours.

Next, 500 ml of ethanol was added to terminate the reaction.

Thereafter, the fibrous cake was recovered by filtering with Whatman paper filter paper, and hydrated with 2 liters of water. The fibrous cake was recovered by filtering again with filter paper and rehydrated with 2 liters of water. The fibrous cake was recovered by filtering again with filter paper and rehydrated with 2 liters of water. Finally, the fibrous cake was collected by filtering with filter paper, mixed with 4 liters of distilled water, and then crushed at 5500 RPM using a colloid mill (colloid mill (HKWP-60) manufactured by Korea Powder System). As a result, a thick, translucent gel phase was obtained, which was used as the second phase, and the solid content of the second phase was 50% by weight.

[Example 1]

1) Preparation of the first agent

While stirring the oil phase described in Table 1 at 400 RPM, the first water phase in Table 1 was slowly and slowly introduced. When Yoo Sang started collecting the first prize, he put the first prize a little every time. When all the first water phases were added, the stirring speed was increased to 3000 RPM and stirred for 20 minutes. Subsequently, the stirring speed was again lowered to 400 RPM, and the second aqueous phase of Table 1 below was slowly and gradually stirred while stirring to prepare a first agent in the form of an oil-in-water (O / W / O) emulsifier.

ingredient Content (% by weight) Paid Cyclopentasiloxane 8 PG-10 dimethicone / vinyl dimethicone cross polymer 4.5 Dimethicone One Tocopheryl acetate 0.1 Phyto squalene 0.5 Phenoxy ethanol (preservative) 0.3 First prize Purified water 64.9 glycerin 6 Allantoin 0.2 Betaine 0.5 Second prize Cellulose nanofiber dispersion
(Solid content 50% by weight) 14

The first agent was applied to the skin of 20 female panels aged 20-40 years old to evaluate the degree of waterdrop expression. As a result, when applying the shearing force while applying the first agent to the skin, it was confirmed that a water drop was formed, and the panelists were evaluated as having excellent satisfaction. In addition, after applying to the skin and maintaining for 30 minutes, the pack agent was washed and removed, and as a result of testing the skin moisturizing power, it was confirmed that the moisturizing power of the skin increased compared to that before the mask pack. It was more than 90% compared to the positive control.

In the evaluation of the moisturizing ability, the moisture content in the transdermal before and after the application of the first agent was measured using a Corneometer, and the moisture content in the transdermal water was evaluated over time. Glycerin 50% was used as a positive control and distilled water was used as a control.

The measurement condition was to adjust the subject to the same condition for 30 minutes at a temperature of 22 ° C and a relative humidity of 50%, and to expose the test site 10 minutes before the measurement. The test site was targeted at the inside of the arm.

Immediately before applying the first agent to the subject, the moisture measurement probe of the Corneometer was pressed directly onto the skin area to be measured to measure the skin moisture content before and after the application of the subject's sample. The average value was obtained by measuring three times.

[Example 2]

1) Preparation of the second agent

A second agent was prepared by mixing 90% by weight of distilled water and 10% by weight of calcium sulfate hydrate.

With respect to 100 parts by weight of the first agent prepared in Example 1, the second agent was mixed with 5 parts by weight to evaluate the degree of waterdrop expression generation as described in Example 1. As a result, when applying a shearing force while applying to the skin, it was confirmed that a water drop was formed, and the panelists were evaluated as having excellent satisfaction.

In addition, it was confirmed that after 5 minutes of application, gelation occurred to form a film film.

In addition, as a result of evaluating the moisturizing power in the same manner as in Example 1, it was confirmed that the moisturizing power of the skin increased. It was more than 95% compared to the positive control.

[Example 3]

With respect to 100 parts by weight of the first agent prepared in Example 1, the second agent was mixed with 5 parts by weight, coated on a glass plate, and then dried at 43 ° C for 40 minutes. The results of XRD analysis of the dried film are shown in FIG. 1. In addition, it was confirmed that the crystallinity was 63.6%. From this, it was confirmed that cellulose nanofibers were included.

As described above, in the present invention, it has been described by specific matters and limited embodiments and drawings, which are provided to help a more comprehensive understanding of the present invention, and the present invention is not limited to the above embodiments, and the present invention Various modifications and variations are possible from those skilled in the art to those skilled in the art.

Therefore, the spirit of the present invention is limited to the described embodiments, and should not be determined, and all claims that are equivalent to or equivalent to the claims, as well as the claims described below, will belong to the scope of the spirit of the present invention. .

Claims (12)

After adding and stirring the first aqueous phase containing water and polyalcohol to an oil phase containing an emulsifier and a silicone-based oil to prepare a water-in-oil (W / O) formulation,
It includes a first agent in the form of an emulsifier prepared in oil-in-water (O / W / O) form by adding and stirring a second aqueous phase containing hydrophilic cellulose nanofibers having carboxylic acid groups and water,
The mixing ratio of the oil phase and the water phase including the first water phase and the second water phase is 10 to 30: 70 to 90 weight ratio,
The hydrophilic cellulose nanofiber is included in 0.5 to 10% by weight of the total content of the first agent,
The first agent is a water drop type in which phase separation occurs upon application of shear force, and after application, the cellulose nanofibers form a film film, and the mask pack composition. According to claim 1,
The mask pack composition further comprises a second agent of the aqueous phase formulation containing a calcium salt. delete delete According to claim 1,
The oil-based emulsifier is a mask pack composition comprising a silicone-based emulsifier. According to claim 1,
Of the total weight of the oil phase, a mask pack composition comprising 25 to 35% by weight of emulsifier and 65 to 75% by weight of oil. According to claim 1,
The hydrophilic cellulose nanofiber having a carboxylic acid group is a mask pack composition that is less than or equal to 3000 nm in length and less than or equal to 30 nm in diameter. delete According to claim 1,
The hydrophilic cellulose nanofibers having a carboxylic acid group oxidize chaff fibers from which silica has been removed using 2,2,6,6-tetramethyl-1-piperidine-oxy radical (TEMPO) catalyst and sodium hypochlorite (NaOCl). After making it, the crushed mask pack composition. According to claim 2,
The second agent is a mask pack composition comprising any one or more calcium salts selected from calcium sulfate hydrate, calcium hydroxide, calcium acetate, calcium citrate, calcium chloride and calcium lactate. According to claim 2,
The calcium salt is a mask pack composition that is contained in 1 to 50% by weight of the total content of the second agent. According to claim 2,
The mask pack composition is a mask pack composition comprising 5 to 30 parts by weight of the second agent, based on 100 parts by weight of the first agent.

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