KR20130041563A - Transparent cosmetic composition - Google Patents

Abstract

PURPOSE: A transparent cosmetic composition is provided to easily reduce refractive index difference between an aqueous ingredient and an oil ingredient using silicon oil and polyol. CONSTITUTION: A transparent cosmetic composition contains a mixture of an aqueous ingredient and an oil ingredient. The aqueous ingredient contains a first solvent including purified water, a moisturizer containing polyol, and a metal scavenger. The oil ingredient contains a second solvent containing a silicon elastomer, silicon oil, and a silicon surfactant. The cosmetic composition contains 25-35 wt% of the first solvent. [Reference numerals] (AA) Example 1; (BB) Example 2; (CC) Example 3; (DD) Example 4;

Description

Transparent Cosmetic Composition

The present invention relates to a cosmetic composition, and more particularly to a transparent cosmetic composition produced by a refractive index matching method.

In general, emulsified cosmetic products are widely used as cosmetics because the oil phase and the water phase can be used simultaneously, so that both advantages can be realized. Recently, transparent cosmetic compositions have been developed in order to implement product differentiation through differences in appearance while satisfying various aesthetics of consumers.

As a method of preparing such a transparent cosmetic composition, there is a microemulsion method and a solubilization method.

The microemulsion method is a method of implementing transparency by forming the particle size very fine to the nm level so that light is not interfered by refraction. However, such a microemulsion method may cause skin side effects because a large amount of surfactant must be used.

The solubilization method is a method of forming a solubilization formulation by increasing the water phase using a thickener as a transparent gel type formulation. However, such solubilization methods are limited in that they contain an oily component that can be felt in a general emulsion formulation.

On the other hand, another method for producing a transparent cosmetic composition is a refractive index matching (Refractive index matching) method.

The refractive index matching method is a method of implementing transparency by matching the refractive index of the refractive index of the aqueous phase component and the oil phase component. Such refractive index matching method has the advantage that you can feel the moisture and oily feeling by including an oil phase component, unlike the solubilized formulation.

However, in general, since the refractive index difference between the water constituting the aqueous phase component and the oil constituting the oil phase component is very large, there are many limitations in producing a transparent cosmetic composition through the refractive index matching method.

In particular, in order to match the refractive index of the aqueous phase component and the oil phase component, a large amount of polyol or fatty acid having a relatively high refractive index is added to the aqueous phase component. In this case, there is a heavy and stuffy feeling, making it difficult to use as a skin care product and over time. As a result, the emulsion stability becomes poor and becomes opaque, causing problems.

The present invention is devised to solve the conventional problems as described above, the present invention can be more easily manufactured by the refractive index matching method, it is an object to provide a transparent cosmetic composition that can give a fresh feeling.

In order to achieve the above object, the present invention comprises a mixture of an aqueous phase component and an oil phase component, the aqueous phase component comprises a first solvent containing purified water, a moisturizer including a polyol, and a metal containment agent, and the oil phase component Silver provides a transparent cosmetic composition comprising a silicone solvent and a second solvent including a silicone oil, and a silicone surfactant.

At this time, the first solvent is included in the range of 25% to 35% by weight in the total cosmetic composition, the moisturizing agent is included in the range of 43% to 60% by weight in the total cosmetic composition, the metal blocking agent It is included in the range of 0.01% to 0.05% by weight in the cosmetic composition, the second solvent is included in the range of 10% to 20% by weight in the total cosmetic composition, the silicone surfactant is 1% to 2% by weight It can be included as a range.

The moisturizing agent may include glycerin, dipropylene glycol, butylene glycol, and PEG-8, and the metal blocking agent may include disodium ethane (EDTA-2Na). .

The glycerin (Glycerin) is included in the range of 5% to 15% by weight in the total cosmetic composition, the dipropylene glycol is included in the range of 15% to 25% by weight in the total cosmetic composition, Butylene glycol may be included in the range of 10% to 20% by weight in the total cosmetic composition, PEG-8 may be included in the range of 5% to 10% by weight in the total cosmetic composition.

The silicone oil may include cyclomethicone and dimethicone, and the silicone surfactant may include polyether modified silicone and polyglycerin modified silicone.

The aqueous phase component may include a thickener including carbomer in the range of 0.1% to 0.3% by weight in the total cosmetic composition, and 0.4% to 0.5% by weight of the neutralizer including potassium hydroxide in the total cosmetic composition. It can be included in the% range.

According to the present invention as described above, the following effects can be obtained.

According to the present invention, it is possible to feel a rich moisture feeling and a fresh feeling that can not have in the cosmetics containing a small amount of purified water in the aqueous phase component.

In addition, according to the present invention, despite being a low viscosity oil-in-water emulsion, it is very stable and can be applied to a product having a relatively low viscosity such as skin, lotion, essence and the like.

In addition, according to the present invention, by using a polyol having a relatively high refractive index as the aqueous phase component and using a silicone oil having a relatively low refractive index as the oil phase component, the difference in refractive index between the aqueous phase component and the oil phase component can be more easily reduced, thereby matching the refractive index. This is facilitated.

In addition, according to the present invention, by using a silicone surfactant and a silicone elastomer, it is possible to solve the problem that may occur with the silicone oil and the polyol, that is, the problem of lowering the stability of the emulsion formulation.

In addition, according to the present invention, since the emulsion can be completed at room temperature, the production efficiency can be improved.

In addition, according to the present invention, since it does not contain a preservative, because it has a predetermined preservative force, it is possible to implement a non-preservative cosmetic.

1 is a sample photograph of a transparent cosmetic composition according to the present invention.
2 is a sample photograph of the cosmetic composition prepared according to Examples 1 to 4 of the present invention.
3 is a photograph for comparing the transparency of the cosmetic composition according to Examples 1 to 4 and Comparative Examples 1 to 3 of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail.

1 is a sample photograph of a transparent cosmetic composition according to the present invention.

As can be seen in Figure 1 the cosmetic composition according to an embodiment of the present invention is in the form of a transparent low viscosity emulsion, and consists of a mixture of an aqueous phase component and an oil phase component.

The aqueous phase component comprises a first solvent, a humectant, a metal sequestrant, a thickener, and a neutralizing agent.

The first solvent comprises water, such as purified water.

The first solvent is included in the range of 25% to 35% by weight in the total cosmetic composition. If the first solvent is less than 25% by weight or more than 35% by weight may affect the refractive index of the aqueous phase may cause problems in the transparency of the formulation.

The moisturizing agent includes a polyol, and specifically, may include glycerin, dipropylene glycol, butylene glycol, and PEG-8.

The moisturizing agent is included in the total cosmetic composition of 43% by weight to 60% by weight. At this time, the glycerin (Glycerin) is included in the range of 5% by weight to 15% by weight in the total cosmetic composition, the dipropylene glycol is included in the range of 15% by weight to 25% by weight in the total cosmetic composition The butylene glycol may be included in the range of 10% by weight to 20% by weight in the total cosmetic composition, and PEG-8 may be included in the range of 5% by weight to 10% by weight in the total cosmetic composition.

If the moisturizing agent is less than 43% by weight or more than 60% by weight may affect the refractive index of the aqueous phase may cause problems in the transparency of the formulation.

When the glycerin (Glycerin) is less than 5% or more than 15% by weight in the total cosmetic composition, when the dipropylene glycol is less than 15% or more than 25% by weight in the total cosmetic composition, Butylene glycol is less than 10% or more than 20% by weight in the total cosmetic composition, the PEG-8 is less than 5% or more than 10% by weight in the total cosmetic composition in the refractive index of the aqueous phase This may affect the transparency of the formulation.

The metal blocking agent comprises disodium idieti (EDTA-2Na).

The metal blocking agent is included in the range of 0.01% to 0.05% by weight in the total cosmetic composition.

If the metal blocking agent is less than 0.01% by weight may cause a problem in the stability of the formulation, if it exceeds 0.05% by weight may cause problems in skin irritation.

On the other hand, the water phase component, the thickener comprising a carbomer in the range of 0.1% to 0.3% by weight in the total cosmetic composition, and the neutralizing agent containing potassium hydroxide in the total cosmetic composition from 0.4% by weight to It may include in the range 0.5% by weight.

The carbomer has a function of adjusting the viscosity of the cosmetic composition, the viscosity is less than 0.1% by weight in the total cosmetic composition, the viscosity is less than 0.3% by weight in the emulsion form of the high viscosity is changed from the low viscosity form.

The potassium hydroxide is used as a pH adjuster or a buffer as a neutralizing agent, the pH is lowered if less than 0.4% by weight in the total cosmetic composition, and if the content exceeds 0.5% by weight too high pH.

The oil phase component comprises a second solvent and a silicone surfactant.

The second solvent comprises a silicone elastomer (Silicone Elastomer) and a silicone oil (Silicone Oil).

The second solvent is included in the range of 10% to 20% by weight in the total cosmetic composition.

If the second solvent is less than 10% by weight or more than 20% by weight may affect the refractive index of the oil phase may cause problems in the transparency of the formulation.

The silicone oil includes a cyclomethicone and a dimethicone.

The silicone surfactant comprises polyether modified silicone and polyglycerin modified silicone.

The silicone surfactant is included in the range of 1% to 2% by weight.

If the silicone surfactant is less than 1% by weight or more than 2% by weight may affect the refractive index of the oil phase may cause problems in the transparency of the formulation.

In one embodiment of the present invention, the purified water content of the first solvent included in the water phase component is characterized by high.

In the cosmetic composition of the present invention, the purified water included in the first solvent is included in the range of 25% by weight to 35% by weight in the total cosmetic composition. Therefore, compared to the cosmetic composition containing a small amount of purified water provides a fresh feeling to the user's skin.

Further, in one embodiment of the present invention, there is a feature in that a polyol is used as a moisturizer included in an aqueous phase component and a silicone oil is used as a second solvent included in an oil phase component.

Generally, since the aqueous phase component has a lower refractive index than the oil phase component, it is not easy to reduce the refractive index difference between the aqueous phase component and the oil phase component.

Therefore, in one embodiment of the present invention, by using a polyol having a relatively high refractive index as a moisturizing agent included in the aqueous phase component and using a silicone oil having a relatively low refractive index as the second solvent included as the oil phase component, the aqueous phase component and the oil phase component The difference in refractive index between them is to be reduced more easily.

In particular, the silicone oil used as the oil phase component in one embodiment of the present invention is known to be difficult to form a relatively fine emulsification, polyol used as the water phase component is known to have a bad effect on the stabilization of the emulsion, silicone oil and polyol Silver is not suitable as a component of transparent cosmetic compositions.

However, as described above, silicone oils and polyols are optimal components for reducing the difference in refractive index between the oil phase component and the water phase component. Therefore, in one embodiment of the present invention to use a silicone oil as an oil phase component in order to reduce the difference in refractive index and to use a polyol as an aqueous phase component, in order to solve the problems that may occur while using the silicone oil and polyol, That is, in order to improve the stability of the formulation of the emulsification that can occur while using a silicone oil and a polyol, it is characterized by including a silicone surfactant and a silicone elastomer.

In addition, the transparent cosmetic composition according to an embodiment of the present invention enables preservative-free cosmetics implementation because it has a predetermined antiseptic force even without including a preservative.

Hereinafter, the transparent cosmetic composition according to the present invention will be described in detail through specific preparation examples. These preparations are merely for illustrating the present invention in more detail, it will be apparent to those skilled in the art that the scope of the present invention is not limited to these preparations.

One. Manufacturing example  1 (aqueous component composition preparation)

A water phase component composition according to the present invention was prepared with the components and composition ratios described in Table 1 below. Specifically, the water phase component composition samples 1 to 7 were prepared by stirring using AGI MIXER (MATSUSHITA ELECTRIC INDUSTRIAL.CO.LTD) at room temperature with the components and composition ratios shown in Table 1 below.

Waterborne Component Composition Sample phrase
minute Main Category Raw material Composition ratio (% by weight) Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Sample 6 Sample 7 One 1st solvent Purified water 30.90 31.50 30.83 30.76 47.46 48.48 34.90 2 Metal blocker EDTA-2Na 0.02 0.02 0.02 0.02 0.02 0.02 0.02 3 Moisturizer glycerin 13.00 4.00 13.00 13.00 10.00 7.00 9.00 4 Moisturizer Dipropylene glycol 20.00 20.00 20.00 20.00 15.00 10.00 15.00 5 Moisturizer Butylene Glycol 15.00 15.00 15.00 15.00 10.00 12.00 12.00 6 Moisturizer PEG-8 5.00 10.00 5.00 5.00 - 5.00 10.00 7 Thickener Carbomer 0.16 0.16 0.20 0.24 0.24 - 0.16 8 Thickener Polymer - - - - - 0.70 - 9 Third solvent ethanol - 3.00 - - - - - 10 corrector Potassium hydroxide 0.42 0.42 0.45 0.48 0.48 - 0.42 total 84.50 84.10 84.50 84.50 83.20 83.20 81.50

2. Manufacturing example  2 (oil component composition preparation)

An oily component composition according to the present invention was prepared using the components and composition ratios described in Table 2 below. Specifically, AGI MIXER (MATSUSHITA ELECTRIC INDUSTRIAL.CO.LTD) was stirred at room temperature with the components and composition ratios described in Table 2 below to prepare oily ingredient composition samples 8 to 14.

Oily Ingredient Composition Sample phrase
minute Main Category Raw material Composition ratio (% by weight) Sample 8 Sample 9 Sample 10 Sample 11 Sample 12 Sample 13 Sample 14 11 Second solvent Cycle mechicon 6.00 3.00 6.00 6.00 4.00 4.00 8.00 12 Second solvent Dimethicone 5.00 6.00 5.00 5.00 6.00 6.00 4.00 13 Second solvent Silicone elastomer 3.00 5.00 3.00 3.00 5.00 5.00 5.00 14 Surfactants Polyether modified silicone 0.30 0.40 0.30 0.50 0.30 0.30 0.30 15 Surfactants Polyglycerin Modified Silicone 1.20 1.50 1.20 1.00 1.50 1.50 1.20 total 15.50 15.90 15.50 15.50 16.80 16.80 18.50

3. Manufacturing example  3 (mixing of the aqueous component composition and the oily component composition)

The aqueous phase component composition prepared according to Preparation Example 1 and the oil phase component composition prepared according to Preparation Example 2 were mixed at room temperature (25 ° C) in a combination according to Table 3 below, and Examples 1 to 4 and Comparative Examples 1 to Comparative A cosmetic composition according to Example 3 was prepared.

Specifically, the aqueous phase composition composition sample and the oil phase component composition samples according to Table 3 were mixed and emulsified using HOMO MIXER (PRIMI, TK HOMOMIXER 2.5 MODEL). The progress of the emulsification proceeded at a low speed of 500rpm to 1500rpm at room temperature and finished at the final 2500rpm. After the completion of the emulsification, the cosmetic composition according to Examples 1 to 4 and Comparative Examples 1 to 3 was prepared through defoaming and filtration.

The cosmetic composition of the present invention can increase the production efficiency because the emulsion can be completed at room temperature.

Cosmetic composition ingredient Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Water component Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Sample 6 Sample 7 Oil component Sample 8 Sample 9 Sample 10 Sample 11 Sample 12 Sample 13 Sample 14

2 is a sample photograph of the cosmetic composition prepared according to Examples 1 to 4 of Table 3.

As can be seen in Figure 2, it can be seen that the cosmetic composition according to the present invention is in the form of a transparent low viscosity emulsion as a whole.

4. Experimental Example  1 (transparency and stability according to the content of purified water and oil phase)

Figure 3 is a photograph taken by using a digital camera after putting each cosmetic composition in a transparent container in order to compare the transparency of the cosmetic composition according to Examples 1 to 4 and Comparative Examples 1 to 3.

As can be seen in Figure 3, it can be seen that Examples 1 to 4 are all transparent low viscosity emulsion, Comparative Example 1 and Comparative Example 2 has an opaque appearance.

In the cosmetic compositions of Examples 1 to 4, the difference in refractive index between the aqueous phase component and the oil phase component is 0.001 or less, and the weight percent of purified water which is the first solvent included in the aqueous phase component is about 30% by weight in the total cosmetic composition. This high content of purified water shows a fresh feeling when applying the skin.

However, as can be seen in Comparative Examples 1 and 2, when the weight percent of purified water increases from 45% to 50% by weight in the total cosmetic composition, the difference in refractive index between the aqueous phase component and the oil phase component becomes 0.001 or more The composition has an opaque appearance.

On the other hand, as can be seen in Comparative Example 3, it can be seen that the separation phenomenon occurs when the oil phase component is 18.5% by weight, an increase of about 3% by weight from Examples 1 to 4. That is, it can be seen that as the oil phase component increases, the degree of phase stability is lowered.

As a result, in order to realize a transparent oil-in-water low viscosity emulsion, it can be seen that the content and composition ratio of the aqueous phase component and the oil phase component should be adjusted so that the difference in refractive index between the aqueous phase component and the oil phase component is 0.001 or less.

In this case, it can be seen that the content of purified water and the content of polyol in the water phase component have a great influence on the transparency and stability, and the content of the oil phase component is a factor influencing the stability of the phase.

5. Experimental Example  2( Cosmetics  Measurement of stability of the composition)

As shown in Table 4 below, the emulsion stability test according to the temperature change was carried out for the cosmetic compositions of Examples 1 to 4 and Comparative Examples 1 to 3.

Stability experiment was evaluated by observing the change in the degree of separation, transparency of the cosmetic composition after 2 months at 4 ℃, 25 ℃ (room temperature), 45 ℃, 50 ℃ after the manufacture.

Emulsion stability division Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 4 ℃ ○ ○ ○ ○ ○ ○ Х 25 ℃ ○ ○ ○ ○ ○ ○ Х 45 ° C ○ ○ ○ ○ Х Х Х 50 ℃ ○ ○ ○ ○ Х Х Х transparency
change No change No change No change No change No change No change Phase separation

 (○: stable, Х: separated)

As can be seen in Table 4, the cosmetic composition according to the present invention prepared according to Examples 1 to 4 has a high degree of stability according to temperature, it can be seen that there is no change in transparency.

However, according to Comparative Example 3 containing 18.5% by weight of an oil phase component including silicone oil, it can be seen that separation occurs at all temperature conditions. In addition, Comparative Examples 1 and 2 have excellent stability at 4 ° C. (low temperature) and 25 ° C. (room temperature), but do not have good stability at high temperature (45 ° C. and 50 ° C.), resulting in separation.

6. Experimental Example  3 ( Antiseptic  Test)

A suspension of five bacteria ( S. aureus , E. coli , E. cloacae , P. aeruginosa , P. putida ) and three fungi ( C. albicans , A.niger, P. luteum ) was prepared in TST . 50 g of the cosmetic composition according to Example 1 were inoculated with bacteria and mold at 106-7 CFU / g and 105-106 CFU / g, respectively. Inoculated samples were stored at room temperature, 1 g each at 7 days, 14 days, 21 days and 28 days, and diluted to 1/1000 with diluent. Bacteria and fungi in the diluted samples were incubated in TSA medium and PDCA medium, respectively, and the mortality rate of the initially inoculated bacteria was confirmed.

The criteria for judging bacteria and fungi must be 99.9% and 95% mortality, respectively.

The results according to the determination criteria are shown in Table 5 below.

Antiseptic test division After 7 days After 14 days After 21 days After 28 days result Example 1 fitness fitness fitness fitness fitness

It is common to use a preservative as a general cosmetic composition, but as can be seen from the results according to Table 5 above, it can be seen that the cosmetic composition according to the present invention has antiseptic properties even if no preservative is included. Therefore, the cosmetic composition according to the present invention has an excellent skin stability effect.

none

Claims (7)

Consists of a mixture of aqueous and oily components,
The water phase component comprises a first solvent containing purified water, a moisturizer including a polyol, and a metal containment agent,
The oil phase component is a transparent cosmetic composition comprising a silicone solvent and a second solvent including a silicone oil, and a silicone surfactant. The method of claim 1,
The first solvent is a transparent cosmetic composition, characterized in that contained in the range of 25% to 35% by weight in the total cosmetic composition. The method of claim 1,
The moisturizing agent is included in the range of 43% to 60% by weight in the total cosmetic composition,
The metal containment agent is included in the range of 0.01% to 0.05% by weight in the total cosmetic composition,
The second solvent is included in the range of 10% to 20% by weight in the total cosmetic composition,
The silicone surfactant is a transparent cosmetic composition, characterized in that contained in the range of 1% by weight to 2% by weight. 4. The method according to any one of claims 1 to 3,
The moisturizing agent includes glycerin (Glycerin), dipropylene glycol (Dipropylene glycol), butylene glycol, and PEG-8,
The metal sealing agent is a transparent cosmetic composition, characterized in that it comprises a disodium IDT (EDTA-2Na). 5. The method of claim 4,
The glycerin (Glycerin) is included in the range of 5% to 15% by weight in the total cosmetic composition,
The dipropylene glycol is included in the range of 15% to 25% by weight in the total cosmetic composition,
The butylene glycol is included in the total cosmetic composition in the range of 10% to 20% by weight,
The PEG-8 is a transparent cosmetic composition, characterized in that contained in 5 to 10% by weight in the total cosmetic composition. 4. The method according to any one of claims 1 to 3,
The silicone oil includes Cyclomethicone and Dimethicone,
The silicone surfactant is a transparent cosmetic composition comprising a polyether modified silicone (polyether modified silicone) and polyglycerin modified silicone (polyglycerin modified silicone). 4. The method according to any one of claims 1 to 3,
The water phase component,
A thickener comprising a carbomer in the range of 0.1% to 0.3% by weight in the total cosmetic composition,
A transparent cosmetic composition comprising a neutralizing agent comprising potassium hydroxide in the range of 0.4% to 0.5% by weight in the total cosmetic composition.

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