KR20220147370A - Functional cosmetic composition containing silicone elastomer and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a cosmetic composition using a silicone elastomer and having skin moisturizing, anti-wrinkle, and skin whitening functions, and more specifically, to a cosmetic composition which allows skin recovery ingredients to be delivered to the lower layer of the epidermal layer, and to last for a long time. The cosmetic composition of the present invention includes a multiple emulsion with an oil-water-oil structure, adenosine and niacinamide.

Description

Functional cosmetic composition containing silicone elastomer and method for manufacturing the same

The present invention relates to a cosmetic composition having a skin improvement function using a silicone elastomer and a method for manufacturing the same, and more particularly, to a cosmetic composition in a multiple emulsion containing a silicone elastomer so that the skin improvement ingredient can be delivered to the lower layer of the epidermis and last for a long time, and It relates to a manufacturing method thereof.

The skin is an organ that is always in contact with the external environment, and it is common to play a role as a protective barrier to prevent moisture loss. In order to prevent such drying of skin moisture, the skin develops into a thin stratum corneum while containing moisture through a differentiation process in the epidermal layer.

As the outermost layer of the skin in direct contact with the external environment, the stratum corneum prevents the intrusion of mechanically and chemically harmful substances, prevents the loss of internal moisture from the external environment that is drier than the living body, and at the same time, the stratum corneum itself retains adequate moisture. , maintaining flexibility.

However, despite these functions, the skin loses moisture and becomes dry due to bad weather, strong UV rays, excessive use of face wash, stress and natural skin aging. Accordingly, skin aging phenomena such as generation of fine wrinkles and loss of elasticity appear in the skin.

Therefore, cosmetic compositions have been developed to prevent such skin damage, but cosmetic compositions developed to date lack the ability to penetrate and stay in the skin.

Therefore, the present invention is to solve various drawbacks and problems caused by the prior art in consideration of the above situation, and by adding a silicone elastomer after preparing and stabilizing an oil-in-water emulsion, adenosine, niacinamide An object of the present invention is to provide a cosmetic composition that has a synergistic effect on moisturizing, wrinkle and whitening improvement, and a method for preparing the same.

In addition, the problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention in order to achieve the above object, the first oil phase comprising silicone elastomer particles; an aqueous portion surrounding the first oil phase; and a second oil phase surrounding the water phase part; includes an oil-in-water multiple emulsion comprising a, adenosine and niacinamide for skin improvement.

According to an embodiment of the present invention, the silicone elastomer may be a polymer including polymethylhydrogensiloxane and vinyl-terminated polydimethylsiloxane as a unit thereof.

According to an embodiment of the present invention, the polymethylhydrogensiloxane may be a polymer having a weight average molecular weight of 500 to 20,000.

According to an embodiment of the present invention, the vinyl-terminated polydimethylsiloxane may be a polymer having a weight average molecular weight of 500 to 20,000.

According to an embodiment of the present invention, adenosine may be 0.04 parts by weight or more with respect to 100 parts by weight of the cosmetic composition.

According to one embodiment of the present invention, niacinamide may be 2 parts by weight or more based on 100 parts by weight of the cosmetic composition.

According to an embodiment of the present invention, the multiple emulsion may further include isododecane and hexadecanol.

According to an embodiment of the present invention, a cosmetic comprising any one of the above-described cosmetic compositions is provided.

According to an embodiment of the present invention, the cosmetic may be any one or more of a lotion, an emulsion, a serum, an essence, an eye cream, a nourishing cream, and a night cream.

According to an embodiment of the present invention, the step of preparing an oil-in-water emulsion by slowly introducing the second oil phase to the aqueous phase; and preparing an oil-in-water multiple emulsion by putting the second oil-phase part containing the silicone elastomer in the oil-in-water emulsion and inverting the oil-in-water emulsion.

According to an embodiment of the present invention, the manufacturing method may further include the step of adding isododecane and hexadecanol.

According to an embodiment of the present invention, the step of preparing the oil-in-water emulsion may be performed by stirring at a speed of 2,000 to 5,000 rpm for 1 to 10 minutes.

According to an embodiment of the present invention, the inverting step may be performed by stirring at a speed of 1,000 to 4,000 rpm for 1 minute to 10 minutes.

According to the present invention, by preparing and using a multiple emulsion using silicone elastomer, the effect of penetrating and remaining in the skin of the active ingredient in the cosmetic composition can be enhanced.

In particular, the composition of the present invention has the advantage that adenosine and niacinamide act in a complex way after penetrating into the skin to maximize the effects of wrinkle, whitening, and UV protection. there is an effect

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is an analysis of the emulsion used as a conventional cosmetic composition.
2 is a flowchart of a method for manufacturing a cosmetic composition according to a preparation example of the present invention.
3 is a chemical reaction scheme showing that the silicone elastomer is prepared according to the preparation example of the present invention.
Figure 4 shows that the oil-in-water emulsion is prepared according to the preparation example of the present invention.
5 shows that a multi-emulsion is prepared as a result of performing the inversion process according to the preparation example of the present invention.

Hereinafter, the present invention will be described in detail in order to achieve the above object. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined in Therefore, the configuration described in the embodiment described in this specification is only the most preferred embodiment of the present invention and does not represent all of the technical idea of the present invention, so various equivalents and It should be understood that there may be variations.

In the present invention, the term “elastomer” refers to a high molecular polymer exhibiting viscosity and elasticity at room temperature, and the material of the elastomer is not limited to a specific type.

In the present invention, the term "emulsion" is a system in which one of liquids that do not dissolve in each other, such as water and oil, is dispersed as fine particles in the other liquid. What is required to make an emulsion is oil, water, surfactant and energy, and it is determined differently depending on the physical properties of each component, miscibility with each component, type and concentration of surfactant, and emulsification process conditions. In general, emulsions can be named by trauma and internal trauma.

In the present invention, the "outer phase" is also referred to as "continuous phase" to "dispersion medium" and means the medium of the emulsion that is a dispersion system.

In the present invention, the "inner phase" is also referred to as "dispersed phase" to "dispersed phase" and refers to fine particles dispersed in an emulsion that is a dispersion system.

In the present invention, the "oil-in-water (O/W) emulsion" means an emulsion in which the continuous phase is a water phase and the dispersed phase is an oil phase, and the present invention For the purpose of the above oil-in-water emulsion can be used in combination with "silicone-in-water (S/W) emulsion", which is an emulsion in which the continuous phase is the aqueous phase and the dispersed phase is silicone oil.

In the present invention, the "multi-emulsion" is a complex system in which an emulsion is formed in an emulsion, and for the purpose of the present invention, the multiple emulsion includes a first oil phase; an aqueous portion surrounding the first oil phase; and may have a second oil phase surrounding the aqueous phase, and may be an O/W/O emulsion to a S/W/S emulsion.

In the present invention, the term "phase inversion" is also referred to as "phase inversion", and refers to a phenomenon in which the trauma and the internal phase in the emulsion are replaced. Since the phase of the emulsion is mainly determined by the type of the emulsifier, inversion occurs by changing the properties of the emulsifier by adding an electrolyte or the like or by adding another emulsifier.

In the present invention, the term "extract" refers to a liquid component obtained by immersing a target substance in a solvent and then extracting it for a certain period of time at room temperature, low temperature, or a warm state, or a solid obtained by removing the solvent from the liquid component. results, etc. In addition, in addition to the result, it can be comprehensively interpreted as including all of the dilutions of the results, their concentrates, their preparations, and their purified products.

In the present invention, the method for obtaining the extract is not particularly limited and various extraction methods commonly used in the technical field to which the present invention pertains may be used. For example, the solvents of purified water, methanol, ethanol, glycerin, ethyl acetate, butylene glycol, propylene glycol, dichloromethane, and hexane can be used alone or a mixture of two or more thereof can be used as the extraction solvent. have. Alternatively, extraction by ultra-high pressure extraction method; extraction by ultrasonic extraction; separation using ultrafiltration membranes with constant molecular weight cut-off values; Fractions obtained through various additional purification methods, such as separation by various chromatography, are also included in the extract.

As used herein, the term "skin improvement" refers to a process of treating, alleviating, alleviating skin damage caused by intrinsic factors or extrinsic factors of the skin, or its effects, and more specifically, skin whitening. , wrinkle improvement, elasticity enhancement, skin regeneration, skin moisturizing, anti-aging, skin irritation alleviation, acne improvement and atopic improvement effect may include at least one selected from, preferably skin whitening, wrinkle improvement or skin moisturizing .

According to an embodiment of the present invention, the first oil phase comprising silicone elastomer particles; an aqueous portion surrounding the first oil phase; and a second oil phase surrounding the water phase; a cosmetic composition for skin improvement comprising a multiple emulsion of oil-in-water (O/W/O or S/W/S) comprising adenosine and niacinamide. can

In the present invention, the silicone elastomer may be a polymer including polymethylhydrogensiloxane and vinyl-terminated polydimethylsiloxane as a unit thereof. When the polymethylhydrogensiloxane and the vinyl-terminated polydimethylsiloxane unit are subjected to a vinylation reaction under a platinum catalyst, a silicone elastomer in powder form suitable for preparing multiple emulsions can be synthesized.

In the present invention, the polymethylhydrogensiloxane used as a unit of the silicone elastomer may be a polymer having a [CH ₃ (H)SiO] unit and a weight average molecular weight (Mw) of 500 to 20,000, but preferably may be a polymer of 500 to 4,000. When the weight average molecular weight of the polymethylhydrogensiloxane is less than 500 or exceeds 20,000, the ability of the polymerized silicone elastomer to penetrate between the skin may decrease, thereby reducing the skin improvement effect.

In the present invention, the vinyl-terminated polydimethylsiloxane used as a unit of the silicone elastomer has a [(CH ₃ ) ₂ SiO] unit, and may be a polymer having a weight average molecular weight (Mw) of 500 to 20,000, Preferably, it may be a polymer of 7,000 to 12,000. When the weight average molecular weight of the vinyl-terminated polydimethylsiloxane unit is less than 500 or exceeds 20,000, the ability of the polymerized silicone elastomer to penetrate between the skin may decrease, thereby reducing the skin improvement effect.

In the present invention, the first oil phase is further added with PEG-9 polydimethylsiloxyethyldimethicone to ensure the stability of the multi-emulsion and maintain the silicone elastomer particles in a dispersed state. may include.

In the present invention, the aqueous phase part may include one or more selected from the group consisting of a water-soluble solvent, a hydrophilic thickener, a moisturizer, a water-soluble physiologically active ingredient, and a water-soluble preservative. For example, purified water, carbomer, sodium polyacrylate, acrylate/C10-30 alkyl acrylate crosspolymer, acrylamide/sodium acrylate copolymer/trideceth-6/mineral salt, ammonium acryloyl dimethyl Taurate, acrylate, ammonium acrylate copolymer, Vpicopolymer, acrylate copolymer, glyceryl acrylate, acrylic acid copolymer, lithium magnesium sodium silicate, hydroxyethyl cellulose, polyacrylamide, montmorillonite, cetyl hydride Roxyethyl cellulose, agar, octyl acrylamide copolymer, cellulose, polyacrylate-13, corn starch, PEG-240/H diicopolymer bis-decyltetradeceth-20 ether, octyl acrylamide copolymer, mannan , gellan gum, aluminum starch octenyl succinate, xanthan gum, carob bean gum, sodium acrylate/sodium acryloyl dimethyl taurate copolymer, sodium polyacrylate starch, and sodium stearoxy sebum-hydroxyethylcellulose sulfo It may include one or more selected from the group consisting of nates, and preferably may include purified water, carbomer, and sodium acrylate/sodium acryloyldimethyltaurate copolymer.

In the present invention, the second oil phase part is silicone oil, ester oil, hydrocarbon oil and triglyceride oil; Or derivatives thereof; may include one or more selected from the group consisting of. For example, cyclomethicone, dimethicone, glyceryl trioctanoate, cetearyloctanoate, cetearylisononanoate, dicaprylic carbonate, capric/caprylic triglyceride, isostearyliso It may include one or more selected from the group consisting of thearate, octyldodecyl myristate, isopropyl palmitate, isopropyl myristate and octyl palmitate, preferably dimethicone and caprylic/capric triglycone. It may include a ceride.

In the present invention, the multi-emulsion may further include isododecane (IDD) and hexadecanol to ensure its stability.

In the present invention, the adenosine is a substance of Structural Formula 1, which is a kind of ribonucleoside and contains adenine, a purine derivative, in the base portion.

[Structural Formula 1]

At this time, the adenosine may include 0.04 parts by weight or more with respect to 100 parts by weight of the cosmetic composition, preferably 0.04 parts by weight, and when satisfying the above range, a silicone elastomer used together while providing a wrinkle improvement effect, niacinamide and the skin improvement effect can be maximized.

In the present invention, the niacinamide is a substance of Structural Formula 2, and is a kind of vitamin B ₃ and has excellent whitening effect.

[Structural Formula 2]

At this time, the niacinamide may contain 2 parts by weight or more based on 100 parts by weight of the cosmetic composition, preferably 2 parts by weight, and a silicone elastomer, adenosine, which is used together while providing a whitening effect when the above range is satisfied. and skin improvement effects can be maximized.

In the present invention, the cosmetic composition may be to add an additive. The additive may include a solvent, a stabilizer, and a natural oil extract, and the types and amounts thereof are known in the art within a range that does not impair the stability of the multi-emulsion, preferably ethanol, propanediol, betaine. , Methylgluceth-20, PG/Sebum-17/6 copolymer, sodium hyaluronate, hydroxyethyl acrylate/sodium acryloyl dimethyl taurate copolymer, arginine, capryl hydrox Samic acid, pentalene glycol, caprylyl glycol adenosine, purified water, birch sap, pomegranate extract, apple extract, chamomile extract, acai palm extract, lingonberry extract, grapefruit oil, neroli natural oil, niaoli oil , lavender oil, lemon essential oil and rosemary leaf oil may be included.

According to another embodiment of the present invention, there is provided a cosmetic comprising any one of the cosmetic compositions described above.

In the present invention, the cosmetic may be any one of a lotion, an emulsion, a serum, an essence, an eye cream, a nourishing cream, or a night cream.

According to another embodiment of the present invention, the step of preparing an oil-in-water emulsion by slowly adding the second oil phase to the aqueous phase; and preparing an oil-in-water multiple emulsion by putting the second oil-phase part containing the silicone elastomer in the oil-in-water emulsion and inverting the oil-in-water emulsion.

In the present invention, the manufacturing method for preparing the cosmetic composition may further include the step of adding isododecane (IDD) and hexadecanol (hexadecanol) in order to secure the stability of the multiple emulsion. .

In the present invention, the step of preparing the oil-in-water emulsion may be performed by stirring at a speed of 2,000 to 5,000 rpm for 1 minute to 10 minutes, and preferably by stirring at a speed of 3,500 rpm for 5 minutes. it could be When the oil-in-water emulsion is prepared by stirring as described above, the stability of the prepared cosmetic composition is high.

In the present invention, the inverting step may be performed by stirring at a speed of 1,000 to 4,000 rpm for 1 minute to 10 minutes, and preferably by stirring at a speed of 2,500 rpm for 5 minutes. When the oil-in-water multiple emulsion is prepared by stirring as described above, the stability of the prepared cosmetic composition is high.

Hereinafter, the present invention will be described in more detail through examples of the present invention, but it is obvious that the present invention is not limited by the following examples.

Conventional cosmetic formulations are water-in-oil (W/O) emulsions or oil-in-water (O/W) emulsions as shown in FIG. 1, and the feeling of use is heavy in the case of a water-in-oil emulsion, and in the case of an oil-in-water emulsion, the longevity does not exist. did.

Accordingly, the present invention prepared a cosmetic composition including multiple emulsions. Referring to the manufacturing method of Figure 2, the cosmetic composition including the multiple emulsion is prepared by preparing a silicone elastomer (Preparation Example 1), preparing an oil-in-water emulsion (S10, Preparation Example 2), preparing a multiple emulsion ( S20, Preparation Example 3) and adding a functional ingredient (S30, Preparation Example 4) may be prepared.

Preparation Example 1

1.1. Silicone Elastomer Manufacturing

As shown in FIG. 3, polymethylhydrogensiloxane and vinyl-terminated polydimethylsiloxane were used as units to undergo an addition reaction under a platinum (Pt) catalyst (60° C., 6 hours). As a result, silicone Elastomer (Silicone elastomer) was prepared.

Here, polymethylhydrogensiloxane used to prepare the silicone elastomer corresponds to a polymer having a [CH ₃ (H)SiO] unit and having a weight average molecular weight (Mw) of 1,000, and the vinyl-terminated Polydimethylsiloxane (Vinyl-terminated polydimethylsiloxane) has a [CH ₃ (H)SiO] unit and corresponds to a polymer having a weight average molecular weight (Mw) of 10,000.

1.2. Preparation of oil-in-water emulsion

As shown in Figure 4, in order to prepare an oil-in-water emulsion (S/W emulsion), purified water, carbomer and sodium acrylate / sodium acryloyl dimethyl taurate copolymer are added and uniformly stirred to dissolve to prepare an aqueous phase, dimethyl Chicon and caprylic/capric triglyceride were added and dissolved by uniform stirring to prepare an oil phase. When the aqueous phase and the oil phase became uniform, the oil phase was gradually added to the aqueous phase to prepare an oil-in-water emulsion. Here, the stirring speed was 3,500 rpm, and the stirring time was 5 minutes.

1.3. Preparation of multiple emulsions

5, the first oil phase comprising silicone elastomer particles; an aqueous portion surrounding the first oil phase; And to prepare an oil-in-water multiple emulsion (S/W/S emulsion) comprising a second oil phase part surrounding the water phase part, the silicone of Preparation Example 1 in the oil-in-water emulsion (S/W emulsion) of Preparation Example 2 Elastomer and PEG-9 polydimethylsiloxyethyldimethicone (PEG-9 polydimethylsiloxyethyldimethicone) were added and inverted by stirring to prepare a multiple emulsion. Here, the stirring speed was 2,500 rpm, and the stirring time was 5 minutes. Next, isododecane (IDD) and hexadecanol were additionally added.

1.4. Addition of functional ingredients

In addition to the multiple emulsion (S/W/S emulsion), ethanol, propanediol, betaine, methylgluceth-20, PEG/PG-17/6 copolymer, sodium hyaluronate, hyaluronic acid Chil acrylate/sodium acryloyl dimethyl taurate copolymer, arginine, caprylic acid, pentalene glycol, caprylyl glycol adenosine, purified water, birch sap, pomegranate extract, apple extract, chamomile extract , acai palm extract, lingonberry fruit extract, grapefruit oil, neroli natural oil, niaoli oil, lavender oil, lemon essential oil, and rosemary leaf oil were added. In addition, in order to add whitening and anti-wrinkle functions to the multi-emulsion, adenosine and niacinamide were added to prepare a cosmetic composition such that 0.04 parts by weight of anenosine and 2 parts by weight of niacinamide were added.

Preparation 2

In order to prepare the cosmetic composition of Preparation Example 2, the method for preparing the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but polymethylhydrogensiloxane used to prepare the silicone elastomer A cosmetic composition of the present invention was prepared using a polymer having a weight average molecular weight (Mw) of 3,000 (polymethylhydrogensiloxane).

Preparation 3

In order to prepare the cosmetic composition of Preparation Example 3, the method for preparing the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but polymethylhydrogensiloxane used to prepare the silicone elastomer A polymer having a weight average molecular weight (Mw) of 5,000 was used for (polymethylhydrogensiloxane), and a polymer having a weight average molecular weight (Mw) of 15,000 was used for vinyl-terminated polydimethylsiloxane.

Preparation 4

In order to prepare the cosmetic composition of Preparation Example 4, the method for preparing the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but polymethylhydrogensiloxane used to prepare the silicone elastomer A polymer having a weight average molecular weight (Mw) of 5,000 was used for (polymethylhydrogensiloxane), and a polymer having a weight average molecular weight (Mw) of 5,000 was used for vinyl-terminated polydimethylsiloxane.

Comparative Example 1

In order to prepare the cosmetic composition of Comparative Example 1, the manufacturing method of the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but the vinyl-terminated poly used to prepare the silicone elastomer A polymer having a weight average molecular weight (Mw) of 1,000 was used for dimethylsiloxane (Vinyl-terminated polydimethylsiloxane).

Comparative Example 2

In order to prepare the cosmetic composition of Comparative Example 2, the manufacturing method of the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but the vinyl-terminated poly used to prepare the silicone elastomer A polymer having a weight average molecular weight (Mw) of 30,000 was used for dimethylsiloxane (Vinyl-terminated polydimethylsiloxane).

Comparative Example 3

In order to prepare the cosmetic composition of Comparative Example 3, the preparation method of the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but polymethylhydrogensiloxane used to prepare the silicone elastomer (polymethylhydrogensiloxane) was used as a polymer having a weight average molecular weight (Mw) of 300.

Comparative Example 4

In order to prepare the cosmetic composition of Comparative Example 4, the preparation method of the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but polymethylhydrogensiloxane used to prepare the silicone elastomer (polymethylhydrogensiloxane) was used as a polymer having a weight average molecular weight (Mw) of 25,000.

In summary, the weight average molecular weight of the polymethylhydrogensiloxane used to prepare the silicone elastomers of Preparation Examples 1 to 4 and Comparative Examples 1 to 4 and the weight average molecular weight of the vinyl-terminated polydimethylsiloxane are shown in Table 1 shown as

Weight average molecular weight (unit: g/mol) Preparation Example 1 Preparation 2 Preparation 3 Preparation 4 Polymethylhydrogensiloxane 3,000 5,000 5,000 Vinyl-terminated polydimethylsiloxane 10,000 10,000 5,000 Weight average molecular weight (unit: g/mol) Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Polymethylhydrogensiloxane 25,000 Vinyl-terminated polydimethylsiloxane 30,000 10,000 10,000

Comparative Example 5

In order to prepare the cosmetic composition of Comparative Example 5, the manufacturing method of the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but the stirring speed was 1,000 rpm, and the stirring time was 1,000 rpm when preparing the oil-in-water emulsion. 5 minutes.

Comparative Example 6

In order to prepare the cosmetic composition of Comparative Example 6, the manufacturing method of the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but the stirring speed was 7,000 rpm, and the stirring time was 7,000 rpm when preparing the oil-in-water emulsion. 5 minutes.

Comparative Example 7

In order to prepare the cosmetic composition of Comparative Example 7, the manufacturing method of the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but the stirring speed was 500 rpm, the stirring time when preparing the multiple emulsion through inversion. was set to 5 minutes.

Comparative Example 8

In order to prepare the cosmetic composition of Comparative Example 8, the preparation method of the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but the stirring speed was 5,000 rpm when preparing the multiple emulsion through inversion, stirring The time was set to 5 minutes.

In summary, the stirring speed (rpm) for preparing the oil-in-water emulsion of Preparation Examples 1 to 4 and Comparative Examples 5 to 8 and the stirring speed (rpm) for preparing multiple emulsions are shown in Table 2 below.

step production example
1 to 4 Comparative Example 4 Comparative Example 6 Comparative Example 7 Comparative Example 8 Stirring speed (rpm) when preparing oil-in-water emulsion 3,500 7,000 3,500 3,500 Stirring speed (rpm) when preparing multiple emulsions 2,500 2,500 2,500 5,000

Comparative Example 9

To prepare the cosmetic composition of Comparative Example 9, a cosmetic composition including an oil-in-water emulsion (S/W emulsion) was prepared without adding silicone elastomer particles. First, an oil-in-water emulsion was prepared in the same manner as in Preparation Example 1, and then, a cosmetic composition was prepared by adding functional ingredients as in Preparation Example 1.

Comparative Example 10

In order to prepare the cosmetic composition of Comparative Example 10, the preparation method of the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but the cosmetic composition was prepared without adding 0.04 parts by weight of adenosine.

Comparative Example 11

In order to prepare the cosmetic composition of Comparative Example 11, the preparation method of the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but the cosmetic composition was prepared without adding 2 parts by weight of niacinamide.

Comparative Example 12

In order to prepare the cosmetic composition of Comparative Example 12, the manufacturing method of the cosmetic composition including the multiple emulsion (S/W/S emulsion) of Preparation Example 1 was followed, but without adding 0.04 parts by weight of adenosine and 2 parts by weight of niacinamide. A composition was prepared.

In summary, the composition of the cosmetic compositions of Preparation Examples 1 to 4 and Comparative Examples 9 to 12 is shown in Table 3 below.

composition production example
1 to 4 Comparative Example 9 Comparative Example 10 Comparative Example 11 Comparative Example 12 silicone elastomer adding unadded adding adding adding adenosine 0.04 parts by weight 0.04 parts by weight unadded 0.04 parts by weight unadded Niacinamide 2 parts by weight 2 parts by weight 2 parts by weight unadded unadded

Evaluation Example 1

In order to compare the anti-wrinkle and whitening effects according to the weight average molecular weight of polymethylhydrogensiloxane and vinyl-terminated polydimethylsiloxane constituting the silicone elastomer unit, a human application test was conducted. 40 adult males and females aged 30 to 65 meeting the selection criteria were selected as subjects, and the compositions of Preparation Examples 1 to 4 and Comparative Examples 1 to 4 were applied to the skin, followed by questionnaire evaluation. Specifically, the degree of excellence evaluated by the subject for the anti-wrinkle and whitening effect was evaluated by determining the scale as no change, improved, and much improved, and is shown in Table 4 below.

The selection criteria are as follows.

A) A person who voluntarily writes and signs the consent form for clinical trial participation after fully explaining the matters that the principal investigator should inform the subject

B) A healthy person without acute or chronic physical disease including skin disease

C) A person who has wrinkles on the test site according to the judgment of the main tester

D) A person who can follow-up during the test period

The test location is as follows.

The place where the anti-wrinkle effect is evaluated must be under constant temperature and humidity conditions (temperature 20 to 24° C., humidity 40 to 60%) without movement of air and direct sunlight.

The test subject should take skin rest for at least 30 minutes at the test site before testing.

The tester's notes are as follows.

A) Do not expose the test area to sunlight.

B) Do not mix and apply between samples.

C) Do not skip sample application

D) During the test period, do not engage in activities that are significantly outside of daily life (such as vacations to other climatic regions, excessive stressful activities, etc.)

evaluation Preparation Example 1 Preparation 2 Preparation 3 Preparation 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 distinct effect (persons) 14 16 10 10 7 8 8 6 Effective (persons) 21 20 15 12 11 18 12 13 No change (persons) 5 4 15 18 22 14 20 21

Referring to Table 4, as a result of the test, in the case of Preparation Examples 1 to 4 according to the present invention, most of the test results answered that there was an anti-wrinkle and whitening effect or had a distinct effect, showing a superior effect than Comparative Examples 1 to 4 As can be seen, if the polymethylhydrogensiloxane constituting the silicone elastomer unit has a weight average molecular weight of 500 to 20,000, and the vinyl-terminated polydimethylsiloxane has a weight average molecular weight of 500 to 20,000, this is not the case. It was confirmed that the effect was larger than the case.

In particular, in the case of Preparation Examples 1 and 2, most of the test results answered that there was an anti-wrinkle and whitening effect or had a distinct effect, indicating that it showed a superior effect than Preparation Examples 3 and 4, which constitutes the silicone elastomer unit. When the weight average molecular weight of the polymethylhydrogensiloxane is a polymer of 500 to 4,000 and the vinyl-terminated polydimethylsiloxane has a weight average molecular weight of 7,000 to 12,000, it can be confirmed that the effect is greater than in the case of not.

Evaluation Example 2

In order to compare the moisturizing, anti-wrinkle and whitening effects of the cosmetic composition according to the stirring speed when preparing the multiple emulsion of the present invention, a human application test was conducted. In the same manner as in Evaluation Example 1, the degree of excellence evaluated by the subject for the moisturizing, anti-wrinkle and whitening effects of Comparative Examples 5 to 8 in Preparation Examples 1 to 4 was evaluated as no change, effective, and distinct Effect (much improved) was further evaluated by determining the scale, and is shown in Table 5 below.

evaluation Preparation Example 1 Preparation 2 Preparation 3 Preparation 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 distinct effect (persons) 14 16 10 10 8 7 8 7 Effective (persons) 21 20 15 12 14 16 14 17 No change (persons) 5 4 15 18 18 17 18 16

Referring to Table 5, in the case of Preparation Examples 1 to 4 according to the present invention, most of the test results answered that they had moisturizing, anti-wrinkle and whitening effects or had distinct effects, showing superior effects than Comparative Examples 5 to 8. As can be seen, when the stirring speed is 3,500 rpm when preparing the oil-in-water emulsion of the present invention and the stirring speed is 2,500 rpm when preparing the multiple emulsion, a stable S/W/S phase multiple emulsion is prepared, compared to the case where the functional material is not It was confirmed that the skin penetration effect was large.

Evaluation Example 3

In order to compare the anti-wrinkle and whitening effects according to the composition of the cosmetic composition of the present invention, a human body application test was conducted. In the same manner as in Evaluation Example 1, the degree of excellence evaluated by the subject for the anti-wrinkle and whitening effects of Comparative Examples 9 to 12 in Preparation Examples 1 to 4 was evaluated as having no effect (no change), having an effect (improved), a distinct effect ( Much improved) was further evaluated by determining the scale, and is shown in Table 6 below.

evaluation Preparation Example 1 Preparation 2 Preparation 3 Preparation 4 Comparative Example 9 Comparative Example 10 Comparative Example 11 Comparative Example 12 distinct effect (persons) 14 16 10 10 5 One 2 2 Effective (persons) 21 20 15 12 25 25 16 13 No change (persons) 5 4 15 18 10 14 22 25

Referring to Table 6, it can be seen that most of the test results of Preparation Examples 1 to 4 according to the present invention have an anti-wrinkle and whitening effect or have a clear effect, showing a superior effect than Comparative Examples 9 to 12 Bar, it was confirmed that the cosmetic composition of the present invention had a greater effect when silicone elastomer, adenosine and niacinamide were used together compared to the case where it was not.

The foregoing description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

Claims (13)

a first oil phase comprising silicone elastomer particles;
an aqueous portion surrounding the first oil phase; and
A second oil phase surrounding the water phase part; includes an oil-in-water multiple emulsion comprising;
A cosmetic composition for improving skin comprising adenosine and niacinamide.
According to claim 1,
The silicone elastomer is a polymer comprising polymethylhydrogensiloxane and vinyl-terminated polydimethylsiloxane as a unit thereof, a cosmetic composition.
3. The method of claim 2,
The polymethylhydrogensiloxane is a polymer having a weight average molecular weight of 500 to 20,000, the cosmetic composition.
3. The method of claim 2,
The vinyl-terminated polydimethylsiloxane is a polymer having a weight average molecular weight of 500 to 20,000, a cosmetic composition.
According to claim 1,
With respect to 100 parts by weight of the cosmetic composition, adenosine is 0.04 parts by weight or more, the cosmetic composition.
According to claim 1,
Niacinamide is 2 parts by weight or more with respect to 100 parts by weight of the cosmetic composition, the cosmetic composition.
According to claim 1,
The multiple emulsion will further include isododecane and hexadecanol, the cosmetic composition.
A cosmetic comprising the cosmetic composition of any one of claims 1 to 7.
9. The method of claim 8,
The cosmetic is any one of a lotion, an emulsion, a serum, an essence, an eye cream, a nourishing cream or a night cream.
Preparing an oil-in-water emulsion by gradually introducing the second oil phase to the water phase; and
A method for preparing a cosmetic composition for skin improvement, comprising: putting a second oil phase containing a silicone elastomer in the oil-in-water emulsion and inverting to prepare an oil-in-water multiple emulsion.
11. The method of claim 10,
The method for preparing a cosmetic composition further comprising the step of adding isododecane and hexadecanol.
11. The method of claim 10,
The step of preparing the oil-in-water emulsion is to be carried out by stirring at a speed of 2,000 to 5,000 rpm for 1 minute to 10 minutes, a method for preparing a cosmetic composition.
11. The method of claim 10,
The inverting step is performed by stirring at a speed of 1,000 to 4,000 rpm for 1 to 10 minutes, the cosmetic composition manufacturing method.

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