KR101353902B1 - Cosmetic film composition containing vitamin C and method for preparing the cosmetic film - Google Patents

Abstract

The present invention relates to a cosmetic film composition comprising vitamin C and a method for producing the same, and more particularly, to a cosmetic film composition comprising vitamin C, a film forming polymer, a gelling agent and a plasticizer; Preparing a cosmetic film composition in which vitamin C, a film forming polymer, a gelling agent and a plasticizer are dissolved in water, coating the mixture on a support to prepare a film, and the film at a temperature of 40 ° C to 120 ° C. Method for producing a cosmetic film comprising the step of drying; And it relates to a cosmetic film produced thereby.
The cosmetic film composition and the cosmetic film prepared using the same according to the present invention contains a high concentration of vitamin C, the stability is maintained for a long time, there is no sticky when applied to the skin, carbon dioxide bubbles are applied when applying an aqueous solution containing carbonate As it occurs, it can increase the skin absorption of vitamin C.

Description

Cosmetic film composition containing vitamin C and method for producing cosmetic film {Cosmetic film composition containing vitamin C and method for preparing the cosmetic film}

The present invention relates to a cosmetic film composition and a method for producing a cosmetic film containing a high concentration of vitamin C stably, even when exposed to air or oxygen, heat, light, etc. It relates to a film composition and a method for producing a cosmetic film produced using the same.

Vitamin C is known to help boost the body's immune function, promote collagen production, prevent wrinkles, regenerate wound tissue, and act as a potent bio-oxidant in skin, blood and tissues. In addition, it has the effect of improving skin pigmentation by inhibiting tyrosinase activity, a major enzyme involved in melanin formation in the skin, and reducing oxidized melanin formed by the oxidation process to reduce melanin. It is known.

However, vitamin C has a structure similar to γ lactone, which is very unstable, and tends to be easily decomposed by being sensitive to air, especially oxygen, heat, and external environment such as light. In addition, due to the nature of vitamin C, a large amount can be dissolved in an aqueous solution, but since a sufficient amount of vitamin C cannot be stabilized due to rapid oxidation, only a small amount as an active ingredient is used in medicine, food, and cosmetics. It is reported that this action is possible.

In addition, in the conventional vitamin C-containing cosmetics, in order to improve the stability of vitamin C, mostly vitamin C was used in the form of vitamin C derivatives (ascorbic acid derivative), but vitamin C derivatives are significantly lower in activity than pure vitamin C and thus excellent in vitamin C. It is difficult to expect a whitening effect.

Recently, as a method for inhibiting the antioxidant of pure vitamin C in the cosmetic composition, a method of adding an antioxidant along with vitamin C, a method of stabilizing in a multiple emulsion to inhibit the oxidation of vitamin C in terms of formulation, and an oil of the oil type A method of stabilizing and a method of inhibiting oxidation of vitamin C by using zinc sulfate and L-tyrosine together have been proposed.

However, when tocopherol or phenol derivatives are used as antioxidants, there are some antioxidant effects, but there is a problem that oxidative discoloration occurs, and the effects are relatively weak compared to the antioxidant power of vitamin C itself. In addition, the addition of synthetic antioxidants is not only environmentally friendly, there is a problem that the amount of use is limited when stabilizing high concentration of pure vitamin C.

Therefore, there is a need for the development of an environmentally friendly cosmetic film composition that contains a high concentration of pure vitamin C while ensuring its stability for a long time.

1. US Patent 4938969 2. Korea Patent Registration 0743960

One aspect of the present invention is therefore to provide a stabilized cosmetic film composition containing a high concentration of pure vitamin C.

Another aspect of the present invention is to provide a method for producing a stabilized cosmetic film containing a high concentration of pure vitamin C.

Another aspect of the present invention is to provide a stabilized cosmetic film containing a high concentration of pure vitamin C.

According to one aspect of the invention, there is provided a cosmetic film composition comprising a vitamin C, a film forming polymer, a gelling agent and a plasticizer.

The cosmetic film composition preferably further comprises an antioxidant consisting of a natural extract.

The cosmetic film composition of the present invention is vitamin C 10 to 50% by weight, antioxidant 5 to 18% by weight, film forming polymer 15 to 25% by weight, gelling agent 0.1 to 7% by weight, plasticizer 8 to 18% by weight and water It is preferred to include 1 to 50% by weight.

The antioxidant is maltodextrin and spearmint leaf extract, sunflower (Helianthus Annuus) seed oil and rosemary (Rosmarinus Officinalis) leaf extract, kiwi (Actinidia deliciosa) extract, cabbage (Brassica Oleracea Capitata) extract, broccoli (Brassica oleracea var) selected from the group consisting of italica Plenck extract, Chestanea crenata Sieb. et Zucc. extract, Psidium guajava extract, Securinega suffruticosa Rehder extract, and Blackcurrant Seed (Ribes nigrum extract) It is preferably one or more selected from the group consisting of one or more extracts.

The film-forming polymer is agarose, quince seed gum, mannan, succinoglucan, dextran, pullulan, carboxymethylethyl cellulose, carboxymethyl starch, crosscardellos, cellulose acetate hydroxy acetate, hydroxypropylmethyl cellulose phthalate, powder It is preferable that it is 1 or more types chosen from the group which consists of cellulose, methylhydroxypropyl cellulose, carboxymethyl starch, and methyl starch.

The gelling agent is hyaluronic acid, albumin, fibroin, propylene glycol ester of alginate, sodium hyaluronate, carboxyvinyl polymer, carrageenan, locust bean gum, xanthan gum, sodium polyacrylate, polyvinylacetal diethylamino acetate, and methacrylic acid- It is preferable that it is 1 or more types chosen from the group which consists of ethyl acrylate copolymers.

The plasticizer is sorbitol, mannitol, mannitol, glycerin, glycerol, propylene glycol, polyethylene glycol, glycerol monoester of fatty acid, sugar alcohol, monosaccharide, Oligosaccharides, triethylene glycol, myvacet, triethylcitrate, triacetin, propylene glycol monocaprylate, propylene glycol dicaprylate (propylene glycol dicaprylate), miglyol, glycerine-phthalate copolymer, diglycerin, erythritol, fructose, phytantriol, butylene glycol, glycerin, Fiji-4, Fiji-8, and It is preferably one or more selected from the group consisting of Fiji-80.

1 to 1 or more other additives selected from the group consisting of the cosmetic film composition perfume oil, coolant, surfactant, stabilizer, emulsifier, thickener, binder, colorant, colorant, flavor, preservative, and pharmaceutical activator. It is preferably further included in an amount of 15% by weight.

According to another aspect of the present invention, a method for preparing a cosmetic film composition comprising dissolving vitamin C, a film forming polymer, a gelling agent, and a plasticizer in water; Coating the mixture on a support to produce a film; And it provides a method for producing a cosmetic film comprising the step of drying the film at a temperature of 40 ℃ to 120 ℃.

The cosmetic film composition preferably further comprises an antioxidant consisting of a natural extract.

The cosmetic film composition of the present invention is vitamin C 10 to 50% by weight, antioxidant 5 to 18% by weight, film forming polymer 15 to 25% by weight, gelling agent 0.1 to 7% by weight, plasticizer 8 to 18% by weight and water It is preferred to include 1 to 50% by weight.

The film is preferably manufactured to a thickness of 1 ~ 5000㎛.

The support is preferably selected from the group consisting of paper, polypropylene (PP), polyethylene (PE), orientated polypropylene (OPP), polyethylene terephthalate (PET) and pearl film.

The drying step is preferably carried out until the moisture content of the cosmetic film is 20% by weight or less.

It is preferred to further comprise the step of stabilizing for 1 to 48 hours at a temperature of 20-30 ℃, and a relative humidity of 30-50%.

According to still another aspect of the present invention, a cosmetic film produced by the above method is provided.

It is preferable that the said cosmetic film is melt | dissolved by the carbonate containing aqueous solution.

The carbonate is preferably at least one selected from the group consisting of ammonium carbonate, potassium carbonate, calcium carbonate, sodium carbonate, sodium bicarbonate, sodium bicarbonate, potassium sesquicarbonate, calcium sesquicarbonate, sodium sesquicarbonate, and potassium hydrogen carbonate. Do.

It is preferable that the density | concentration of the said carbonate containing aqueous solution is 0.5 to 6 weight%.

The cosmetic film composition and the cosmetic film prepared using the same according to the present invention contains a high concentration of vitamin C, the stability is maintained for a long time, there is no sticky when applied to the skin, carbon dioxide bubbles are applied when applying an aqueous solution containing carbonate As it occurs, it can increase the skin absorption of vitamin C.

Figure 1 shows the results of the evaluation of the stability of vitamin C over time.
2a to 2d shows the results of evaluation of the stability of vitamin C with temperature.
Figure 3 shows the evaluation of the stability of vitamin C against sunlight.

Hereinafter, the present invention will be described in detail.

The present invention relates to a cosmetic film composition comprising vitamin C, a film forming polymer, a gelling agent, and a plasticizer, and the present invention can stably contain a high concentration of vitamin C as a cosmetic composition in a film formulation.

Furthermore, it is preferable that the cosmetic film composition further includes an antioxidant made of a natural extract.

The cosmetic film composition of the present invention is vitamin C 10 to 50% by weight, antioxidant 5 to 18% by weight, film forming polymer 15 to 25% by weight, gelling agent 0.1 to 7% by weight, plasticizer 8 to 18% by weight and water It is preferred to include 1 to 50% by weight.

More preferably, the cosmetic film composition of the present invention 20 to 30% by weight of vitamin C, 13 to 15% by weight of antioxidant, 18 to 20% by weight of film forming polymer, 3 to 5% by weight of gelling agent, 12 to 15 of plasticizer % By weight and remainder of water.

In particular, according to the present invention it is possible to obtain a cosmetic film composition containing a high content of pure vitamin C, but not a vitamin C derivative, the stability is maintained for a long time. Vitamin C that can be used in the present invention is preferably at least 98.0% purity, can be used ascorbic acid (ascorbic acid).

The vitamin C is included in the cosmetic film composition of the present invention in 10 to 50% by weight, more preferably in 20 to 30% by weight. When the vitamin C in the cosmetic film composition of the present invention is less than 10% by weight, the effect of vitamin C may be insufficient, and when included in excess of 50% by weight, it is difficult to adhere to the skin when it is easily broken into a film, and vitamins Because of the high content of C, skin irritation may occur.

Generally, when more than 5% of vitamin C is contained in cosmetics, it can be said that vitamin C is contained in a high content.In this case, side effects such as skin irritation due to inferior stability such as decomposition of vitamin C or residual residues May occur. However, in the present invention, even when vitamin C is contained in an amount of 10% by weight or more, vitamin C is not decomposed and is stably maintained.

When the cosmetic film composition of the present invention contains an antioxidant, it may help to inhibit or stabilize the oxidation of vitamin C, and the antioxidant is preferably a natural extract.

The antioxidant is preferably included in the cosmetic film composition of the present invention 5 to 18% by weight, more preferably included in 13 to 15% by weight. If the cosmetic film composition of the present invention contains less than 5% by weight of the antioxidant, there is a problem that the vitamin C is oxidized to decrease the titer, when contained in more than 18% by weight to prevent the formation of the polymer film There is a problem that a film is not formed.

Antioxidants that can be used in the cosmetic film compositions of the present invention are antioxidants with an antioxidant effect that serves to further stabilize vitamin C, which is stably maintained by the formulation properties of the film, for example maltodextrin and Spearmint leaf blend extracts such as Speramox ^TM , Sunflower (Helianthus Annuus) seed oil and Rosemaryus Officinalis leaf blend extracts such as Rosamox ^TM , Actinidia deliciosa extract, Cabbage (Brassica Oleracea Capitata) extract, Broccoli (Brassica oleracea var. Italica Plenck) extract, chestnut (Castanea crenata Sieb. Et Zucc.) Extract, Psidium guajava extract, Securinega suffruticosa Rehder extract, and blackcurrant seed (Ribes nigrum) extract It may be one or more selected from the group consisting of, but is not limited thereto.

Cosmetic film composition of the present invention comprises a film-forming polymer, the component is to form a film that can serve to protective coating vitamin C.

The film-forming polymer is preferably included in the cosmetic film composition of the present invention in 15 to 25% by weight, more preferably 18 to 20% by weight. When the film-forming polymer is less than 15.0% by weight, the stability of vitamin C is lowered and there is a problem of discoloration during storage. When the film-forming polymer is included in excess of 25.0% by weight, the moisture absorption is high, which makes it difficult to produce a film. have.

It is preferable that the film forming polymer which can be used for this invention is a hydrophilic polymer, For example, agarose, quince seed gum, mannan, succinoglucan, dextran, pullulan, carboxymethylethyl cellulose, carboxymethyl starch, It may be one or more selected from the group consisting of crosscardellos, cellulose acetate cellulose, hydroxypropylmethyl cellulose phthalate, powdered cellulose, methylhydroxypropyl cellulose, carboxymethyl starch, and methyl starch, but is not limited thereto.

Preferably, the film-forming polymer is a hydrophilic polymer having a weight average molecular weight of 1,000 to 2,000,000 g / mol, and when the weight average molecular weight is less than 1,000 g / mol, the viscosity is low to form a film, and the average molecular weight is 2,000,000 g / mol If it exceeds mol, the viscosity becomes high and processing is difficult.

The gelling agent included in the cosmetic film composition of the present invention is for preventing the film from chipping, and it is particularly preferable to have a gelling characteristic when cooled.

The gelling agent is preferably included in 0.1 to 7% by weight, more preferably 3 to 5% by weight in the cosmetic film composition of the present invention. When the gelling agent is included in less than 0.1% by weight, there is a problem that the film is easily broken, and when contained in more than 7% by weight, there is a problem that is not easily solubilized when the film is dissolved with a solvent.

Examples of the gelling agent of the present invention include hyaluronic acid, albumin, fibroin, propylene glycol ester alginate, sodium hyaluronate, carboxyvinyl polymer, carrageenan, locust bean gum, xanthan gum, sodium polyacrylate, polyvinyl acetal diethylamino acetate, And it may be one or more selected from the group consisting of methacrylic acid-ethyl acrylate copolymer, but is not limited thereto. The gelling agent used in the present invention is preferably capable of imparting flexibility and elasticity of the film.

The plasticizer included in the cosmetic film composition of the present invention is used for preventing hardening and stickiness and for imparting properties such as plasticity, and also lowering the glass transition temperature in the manufacturing process so that the melt viscosity can be controlled using the plasticizer.

The plasticizer is preferably included in the cosmetic film composition of the present invention 8 to 18% by weight, more preferably 12 to 15% by weight. If the plasticizer is less than 4% by weight, the film does not dry and sticky problem occurs, and if it exceeds 15% by weight, the form holding force of the film tends to be lowered.

The plasticizer that can be used in the present invention is preferably an organic compound having at least one hydroxyl group, such as polyol, for example sorbitol, mannitol, glycerin, propylene glycol ( propylene glycol, polyethylene glycol, glycerol monoesters of fatty acids, sugar alcohols, monosaccharides, oligosaccharides, triethylene glycol, myvacet, triethyl Citrate, triacetin, propylene glycol monocaprylate, propylene glycol dicaprylate, miglyol, glycerin-phthalate copolymer, diglycerin Composed of erythritol, fructose, phytantriol, butyleneglycol, glycerin, Fiji-4, Fiji-8, and Fiji-80 But it is at least one member selected from, but is not limited thereto.

Furthermore, any other additives may be included as needed to improve the physical properties of the cosmetic film composition of the present invention. These other additives may be, for example, one or more selected from the group consisting of perfume oils, surfactants, stabilizers, emulsifiers, thickeners, binders, colorants, pigments, perfumes, and preservatives, but are not limited thereto. .

The other additives are preferably further included in an amount of 1 to 15% by weight in the cosmetic film composition of the present invention.

Furthermore, according to the present invention, there is provided a method for producing a cosmetic film containing a high concentration of vitamin C using the cosmetic film composition and maintaining stability for a long time.

More specifically, dissolving the vitamin C, film-forming polymer, gelling agent and plasticizer in water to prepare a mixture; Coating the mixture on a support; And it provides a method for producing a cosmetic film comprising the step of drying at a temperature of 40 ℃ to 120 ℃.

The components and contents of the sheet mask composition used to prepare the sheet mask of the present invention are as described above.

In the step of coating the mixture on the support, the coating may be carried out using any coating method well known in the art, for example prepared by coating with a roller and a film coater, or the like, The melt-extrusion method may be used to obtain a film by extrusion, or the solution casting method may be used to prepare the cosmetic film composition into a dope and cast the dope to obtain a film.

In the coating step, the support may be a base substrate or a release film of various materials, for example paper, polypropylene (PP), polyethylene (PE), orientated polypropylene (OPP), polyethylene tere It may be selected from the group consisting of phthalate (PET) and pearl film.

The cosmetic film of the present invention is preferably manufactured to a thickness of 1 ~ 5000㎛, more preferably about 1 ~ 1000㎛ thickness. At this time, it is desirable to have a uniform thickness in all areas. When the thickness of the cosmetic film is less than 1㎛ difficult handling due to the thin film, when the thickness exceeds 5000㎛ is not preferable in that the decomposition or dissolution of the film is slow to adhere to the surface of the support completely attached.

The coated film as above is subsequently dried at a temperature of about 40-120 ° C. The drying step is preferably carried out with hot air. The drying is such that the moisture content of the cosmetic film of the present invention is preferably 1 to 30% by weight.

If the temperature is less than 40 ℃ during drying is not preferable because the solvent or moisture volatilization is not made smoothly and the drying is slow, if the temperature exceeds 120 ℃ during drying there is a fear that the shape of the film.

The cosmetic film of the present invention is preferably less water content in the film, and may not contain any moisture in the components of the finished cosmetic film. However, it is preferable to contain about 1% by weight or more of moisture so that the film does not easily break. When the water content exceeds 30% by weight, the cosmetic film is stretched and sticky, which is not preferable. More preferably, the moisture content of the cosmetic film of the present invention is 1 to 30% by weight, still more preferably 7 to 14% by weight.

Furthermore, it is preferable to further include the step of stabilizing for 1 to 48 hours at a temperature of 20 ~ 30 ℃, and a relative humidity of 30 to 50% so that the film can exhibit more excellent properties. The stabilization step can be carried out, for example, at 25 ° C. temperature and 45% relative humidity for 24 hours.

Subsequently, the vitamin C-containing cosmetic film provided according to the present invention may be prepared in a form capable of applying any specific part of the skin, and may be manufactured in any shape and size desired according to the application site and use.

Furthermore, according to this invention, the cosmetic film manufactured by the above method is provided. The cosmetic film of the present invention has no skin irritation when attached to the skin in a film state, and furthermore, when applying a dissolving agent consisting of a carbonate solution after attaching to the skin, the pH of the skin increases as the carbon dioxide is generated. It is around 5.0 and the acidity is adjusted to the extent that the application of carbonate also reduces the irritation to the skin.

The cosmetic film prepared by the vitamin C-containing cosmetic film composition provided according to the present invention can be dissolved by any aqueous solution containing water, but in the case of using a carbonate-containing aqueous solution capable of generating carbon dioxide as a solvent The organic acid vitamin C and carbonate react to generate carbon dioxide, and carbon dioxide is preferable because it can alleviate skin irritation caused by vitamin C.

That is, after applying the cosmetic film of the present invention to the skin by applying a carbonate-containing aqueous solution can generate carbon dioxide bubbles while increasing the skin penetration of vitamin C, in this case can also increase the skin whitening effect of carbon dioxide itself. .

The carbonates that can be used in the carbonate-containing aqueous solution are a group consisting of ammonium carbonate, potassium carbonate, calcium carbonate, sodium carbonate, sodium bicarbonate, sodium hydrogen carbonate, potassium sesquicarbonate, calcium sesquicarbonate, sodium sesquicarbonate, and potassium hydrogen carbonate It may be one or more selected from, but is not limited thereto.

On the other hand, the concentration of the carbonate-containing aqueous solution is preferably 0.5 to 6% by weight. When the concentration of the carbonate-containing aqueous solution is less than 0.5% by weight, the amount of carbon dioxide generated is not very effective, and if it exceeds 6% by weight, the solubility of the carbonate may exceed the solubility.

The application amount of the said carbonate containing aqueous solution is not specifically limited, A user can add or subtract suitably.

The cosmetic film of the present invention contains a high concentration of vitamin C, the stability is maintained for a long time, and furthermore, when the aqueous solution containing carbonate after applying the cosmetic film of the present invention to the skin, carbon dioxide is due to the reaction of vitamin C and carbonate The generated carbon dioxide may alleviate skin irritation caused by high concentrations of vitamin C and activate skin mucous membranes to increase the skin absorption effect of vitamin C.

Hereinafter, the present invention will be described more specifically by way of specific examples. Example

Is merely an example to help understanding of the present invention, but the scope of the present invention is not limited thereto.

Example  1 to 5

The ingredients in Table 1 below were mixed and warmed to 70 ° C. to disperse and dissolve until all ingredients were completely dissolved. At this time, the added water was mixed so as to be about 3 times the amount of the remaining ingredients except water. The solution thus prepared was left at room temperature for 24 hours to remove bubbles. Then, after applying an appropriate amount on the release film (support) and considering the film thickness required to adjust the film coater (Film coater) was cast (casting) so that the final thickness of the film to 45㎛. The vitamin C film was dried with hot air at about 80 to 110 ° C. based on the total weight of the film so that the moisture content of the film was as shown in Table 1 below.

ingredient Example 1 Example 2 Example 3 Example 4 Example 5 Pullulan 19.0 19.2 19.3 19.5 20.0 Locust Blind Sword 5.0 4.4 3.9 3.9 1.0 glycerin 15.0 14.4 12.8 6.8 4.5 Ascorbic acid 20.0 25.0 30.0 40.0 50.0 Refined Jojoba Oil 14.0 10.2 6.0 3.0 2.0 Speramox ^TM + Broccoli Extract 13.0 13.0 14.0 14.0 15.0 Moisture content after drying 14.0 13.8 13.4 12.8 7.5

* Unit: weight%

After drying, the cutter was mounted with a knife blade of a desired film form, and the film was cut into a desired form, leaving a release paper, and molded.

The molded film was stabilized by standing at 25 ° C. temperature and 45% relative humidity for 24 hours in a constant temperature and humidity device. The film after stabilization had a water content of about 7-14% by weight.

Comparative Example  One

Skin care lotion containing 20% by weight of pure vitamin C 54.69% by weight purified water, 7.0% by weight glycerin, 0.02% by weight xanthan gum, 3.0% by weight butylene glycol, 2.0% by weight sodium hyaluronate, 1.0% by weight natural betaine , 0.1% by weight of allantoin, 0.12% by weight of Carbopol 980, 0.8% by weight of LANNETO, 1.0% by weight of GM205, 0.2% by weight of phenoxyethanol, 0.1% by weight of arginine, 2.0% by weight of KF-995, NEOBEE M- 5 4.0 wt%, Crodalan SWL 1.2 wt%, White Beadswax 0.5 wt%, Rheodol AS-10 0.5 wt%, Tego care 450 1.0 wt%, Rheodol MS-165 0.5 wt%, Methylparaben 0.2 wt%, Propylparaben 0.05 Wt%, EDTA-2Na 0.02 wt% were prepared by mixing at 80 ° C., dispersing and dissolving completely.

Experimental Example  1: Assessment of the Stability of Vitamin C Over Time

Vitamin C stability of the cosmetic film prepared in Comparative Example 1 and Example 1 was compared.

More specifically, the two products of Comparative Example 1 and Example 1 were stored at the laboratory temperature (about 25 ℃), and Comparative Example 1 at 3 days, 7 days, 14 days, 30 days, 60 days, 90 days after storage, respectively Vitamin C content of the lotion and the film of Example 1 of the present invention was analyzed by high performance liquid chromatography (HPLC) equipment, and the analysis results are shown in FIG.

For HPLC analysis, phenomenex C ₁₈ (4.0x150mm) was used, and the absorption wavelength of the UV detector was 254 nm, and the diluent and the mobile phase were mixed with 0.05M KH ₂ PO ₄ and acetonitrile (60 to 40). It was. The flow rate was 1 mL per minute and the injection amount was 10 microliters.

As can be seen in Figure 1, the content of vitamin C in the lotion formulation of Comparative Example 1 was confirmed to be reduced significantly before 15 days, in the case of the film of Example 1 of the present invention, the content of vitamin C It can be seen that it remains stable until 90 days.

Experimental Example  2: Evaluation of the Stability of Vitamin C with Temperature

The films prepared according to Comparative Example 1 and Example 1 were stored in a 4 ° C., 25 ° C., 35 ° C., 40 ° C. constant temperature oven, and 3, 7, 14, 30, 60, 90 days after storage. The vitamin C content of the lotion of Comparative Example 1 and the film of Example 1 of the present invention were analyzed by the same high performance liquid chromatography (HPLC) equipment as in Experimental Example 1, respectively, and the analysis results are shown in FIGS. 2A to 2D, respectively. It was.

As can be seen in Figures 2a to 2d, the content of vitamin C in the lotion formulation of Comparative Example 1 is significantly reduced 30 days before, unlike the content of vitamin C in the film of Example 1 of the present invention It can be seen that the concentration is continuously maintained.

Experimental Example  3: Evaluation of Daylight Stability of Vitamin C

The films prepared according to Comparative Example 1 and Example 1 were exposed to a solar simulator (Solar Light Co., Multiport 601-150) similar to sunlight.

After 3 days, 7 days, 14 days, 30 days, 60 days, 90 days after exposure, the vitamin C content of the films prepared according to Comparative Example 1 and Example 1 was the same as that of Experimental Example 1, respectively. 3) analyzed by the equipment, and the analysis results are shown in FIG.

As can be seen in Figure 3, the vitamin C content of the lotion formulation of Comparative Example 1 is significantly reduced before 30 days, the vitamin C content of the film of Example 1 of the present invention is sustained It can be confirmed that it is maintained at a high concentration.

Experimental Example  4: skin irritation test

After the application of the vitamin C film of Example 1 to the closed patch test method on the lower arm of 50 healthy male and female experimenters once a day, and then covered with a plastic cap to block the influence of external conditions 1 day, 3 days, The degree of stimulation was observed for 7 days. Criterion of stimulus degree is as follows.

0: No stimulation

1: slight irritation

2: erythema

3: Severe irritation such as erythema and edema

4: Severe irritation such as erythema and edema

After measuring the stimulus level of each subject, the average stimulus degree was calculated by dividing by the number of subjects. Table 2 below is the average of the stimulus degrees calculated by the above determination method.

division Skin irritation degree (average) 1 day 3 days 7 days Example 1 0.7 0.7 0.9

These results indicate that the cosmetic film composition of the present invention has almost no skin irritation.

Claims (18)

delete delete Vitamin C 10 to 50% by weight, 5 to 18% by weight mixture of maltodextrin and spearmint leaf extract as antioxidant, 15 to 25% by weight pullulan as film forming polymer, 0.1 to 7% by weight locust bean gum as plasticizer, as plasticizer Cosmetic film composition comprising 8 to 18% by weight glycerin and 1 to 50% by weight of water.
delete delete delete delete Vitamin C 10 to 50% by weight, 5 to 18% by weight mixture of maltodextrin and spearmint leaf extract as antioxidant, 15 to 25% by weight pullulan as film forming polymer, 0.1 to 7% by weight locust bean gum as plasticizer and as plasticizer Preparing a cosmetic film composition in which 8 to 18% by weight of glycerin is dissolved in 1 to 50% by weight of water;
Preparing a film by coating the composition on a support; And
Drying the cosmetic film at a temperature of 40 ° C. to 120 ° C. until the moisture content of the cosmetic film is 20% by weight or less.
Method for producing a cosmetic film comprising a.
delete delete The method of claim 8, wherein the film is produced in a thickness of 1 ~ 5000㎛.
The method of claim 8, wherein the support is selected from the group consisting of paper, polypropylene (PP), polyethylene (PE), orientated polypropylene (OPP), polyethylene terephthalate (PET) and pearl film. Method for producing a cosmetic film selected.
delete The method of claim 8, further comprising the step of stabilizing for 1 to 48 hours at a temperature of 20 ~ 30 ℃, and a relative humidity of 30 to 50%.
Cosmetic film prepared by any one of claims 8, 11, 12 and 14.
The cosmetic film according to claim 15, wherein the cosmetic film is dissolved by an carbonate-containing aqueous solution.
The method of claim 16 wherein the carbonate is from the group consisting of ammonium carbonate, potassium carbonate, calcium carbonate, sodium carbonate, sodium bicarbonate, sodium bicarbonate, potassium sesquicarbonate, calcium sesquicarbonate, sodium sesquicarbonate, and potassium hydrogencarbonate Cosmetic film is at least one selected.
The cosmetic film according to claim 16, wherein the concentration of the carbonate-containing aqueous solution is 0.5 to 6% by weight.

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