KR102085428B1 - Oil in Water Type Emulsified Cosmetic Composition Havung Low Stimulus And Preparation Method thereof - Google Patents

Abstract

The present invention provides an emulsifier-free emulsified cosmetic composition and a method for producing the same, which include an emulsion obtained by adding and homogenizing an oil phase part including fatty alcohol and vegetable oil to the water phase without including an additional emulsifier. .

Description

OIL in Water Type Emulsified Cosmetic Composition Havung Low Stimulus And Preparation Method

The present invention relates to a hypoallergenic oil-in-water cosmetic composition and a method for preparing the same, and more particularly, to a co-irritant without an emulsifier, which can provide an effect of improving skin shine while maintaining emulsion stability even without containing an emulsifier. It relates to an oil-in-water emulsion cosmetic composition and a method for producing the same.

Emulsion can be defined as a liquid-liquid dispersion system, and is used in various industrial fields such as cosmetics and food. In general, cosmetic emulsions are in most cases a mixed aqueous solution of emulsified water or water-soluble substances and oily substances such as oils and waxes with an emulsifier. Additives, flavorings, pigments and the like are added here to add aesthetic elements. Therefore, their stability should be designed taking into account the conditions of use and the fact that they are used for a substantially long time.

Generally, the synthetic surfactants added cause skin irritation or allergies. This is because the surfactant having an amphiphilic structure tends to solubilize the skin lipids to form micelles. Due to this property, the lipids of the skin are damaged and the barrier is weakened, causing skin irritation and allergy. Accordingly, various attempts have been made to maintain the emulsion stability of an emulsion cosmetic composition without using a surfactant.

Recently, as women's interest in skin expression is increasing, they are bringing shine as an essential condition for healthy skin. Looking at the structure of the skin, the outer epidermis is functionally divided into the stratum corneum, the transparent layer, the granule layer, and the basal layer from the outer side to the inner side. It acts to fix the skin to the internal organs. The epidermis is the thinnest layer of the three skin structures, and it is a function of moisturizing and protecting the skin. It is reported that the stratum corneum of the epidermis must maintain at least 10% water content, and the thickness of the stratum corneum varies depending on the content.

An important function of the stratum corneum is to prevent the loss of moisture and electrolyte from our body to the outside and to protect it from external physical and chemical damage. The stratum corneum consists of keratinocytes made of protein and lipids surrounding the keratinocytes. In order to maintain a healthy skin condition, the stratum corneum should contain about 30% moisture, and largely 1) sebum, 2) natural moisturizing factors such as amino acids, urea, organic acids, and 3) Intercellular lipids are involved. If the balance of these factors is broken or lacking, dry skin can be induced and the skin can lose its luster.

Accordingly, the present inventors have made various efforts to prepare a cosmetic composition in which emulsion stability is maintained without containing a conventional synthetic or natural emulsifier. As a result, when the polymer and fatty alcohols contain an appropriate content, the emulsion stability is maintained without an emulsifier. The present invention has been completed.

Accordingly, an object of the present invention is to provide a topical additive-free emulsified cosmetic composition that can have an effect of improving skin gloss while maintaining emulsification stability even without containing an emulsifier.

The technical problem of the present invention as described above is achieved by the following means.

(1) An emulsifier-free emulsified cosmetic composition comprising an emulsion obtained by adding and homogenizing an oil phase part containing fatty alcohol and vegetable oil to the water phase without including an additional emulsifier.

(2) In the above (1),

Fatty alcohol is emulsifier-free emulsified cosmetic composition, characterized in that at least one selected from the group consisting of myristyl alcohol, cetyl alcohol, stearyl alcohol, batyl alcohol, behenyl alcohol, and cetostearyl alcohol.

(3) In the above (1),

Vegetable oil is emulsifier-free emulsified cosmetic composition comprising a lauric acid 73-75% by weight and palmitic acid 14-16% by weight.

(4) In the above (1),

Vegetable oil is an emulsifier-free emulsified cosmetic composition, characterized in that the carbon chain of the constituent fatty acid contains 10 to 18 of 98% by weight or more.

(5) In the above (1),

Vegetable oil is an emulsifier-free emulsified cosmetic composition, characterized in that it comprises an oil palm oil, oil palm kernel oil or a mixed oil thereof.

(6) As described in (5),

Fatty alcohol is a stearyl alcohol, behenyl alcohol, and cetostearyl alcohol, emulsifier-free emulsified cosmetic composition, characterized in that it comprises.

(7) As for (6),

The oil phase portion further comprises a silicone oil emulsifier-free additive-type cosmetic composition, characterized in that.

(8) heating and dissolving the oil phase including no fatty emulsifier and comprising fatty alcohol and vegetable oil; And adding the dissolved oil phase part to a water phase part to homogenize to obtain an emulsion.

(9) As for (8),

The oil phase part is an vegetable oil and contains an oil palm oil, an oil palm kernel oil, or a mixed oil thereof, and the fatty alcohol includes stearyl alcohol, behenyl alcohol, and cetostearyl alcohol. Method of Preparation of the Composition.

(10) In the above (9),

The oil phase part is a method for producing an emulsifier-free emulsion cosmetic composition, characterized in that it comprises a silicone oil.

The additive-free emulsifying cosmetic composition of the present invention utilizes polymers and fatty alcohols to form fine emulsified particles to improve skin moisture content and at the same time balance with sebum essential for skin maintenance, thereby improving skin luster, It can improve the stickiness and heavy usability of the surfactant.

1 is a micrograph of the result obtained in Example 3.
2 is a photograph of brown rice of a result obtained in Comparative Example 3. FIG.

The present invention provides a topical additive-free emulsion cosmetic composition.

The composition according to the present invention is not particularly limited, but preferably includes 50 to 90% by weight of the water phase and 10 to 50% by weight of the oil phase including vegetable oil and fatty alcohol based on the weight of the cosmetic composition.

According to one aspect of the present invention, the present invention provides an oil-in-water emulsion-type cosmetic composition and a method for producing the same, based on the total weight of the cosmetic composition, containing no emulsifier, including the following.

(a) 50 to 90% by weight of the water phase including 1 to 30% by weight of polyol and 0.10 to 1.0% by weight of the polymer, based on the weight of the water phase; And

(b) 10-50% by weight of oil phase, comprising 1-40% by weight of fatty alcohol or wax and 1-20% by weight of vegetable oil, based on the weight of oil phase.

As used herein, the term 'polyol' may refer to a polyhydric alcohol, that is, an aliphatic compound having two or more hydroxyl groups (—OH). Those having two hydroxyl groups are called glycol or diol, those having three hydroxyl groups are called glycerol, and those having four hydroxyl groups are called pentaerythritol.

According to a preferred embodiment of the present invention, the water phase part comprises a polyol, and the polyol is sorbitol, polyethylene glycol, polypropylene glycol, dipropylene glycol, propanediol, ethylhexanediol, 1.2-hexanediol, sebum / fiji / poly Butylene glycol-8 / 5/3 glycerin and pentylene glycol, and more preferably glycerin, propylene glycol, ethylhexanediol, propanediol, 1,3-butylene glycol, sorbitol and polyethylene glycol It is selected from the group containing, and most preferably may be selected from the group comprising glycerine, propylene glycol, 1,3-butylene glycol, sorbitol and polyethylene glycol.

The polyol component acts as a moisturizer and an emulsifier, and when the content of the polyol component is less than the above range, the emulsifying power and the moisturizing power are decreased, and when the content of the polyol component exceeds the above range, the usability may be decreased.

According to a preferred embodiment of the present invention, the water phase portion is an acrylate / C 10-30 alkyl acrylate crosspolymer, an acrylate / C 10-30 alkyl acrylate crosspolymer, a carbomer, ammonium acryloyldimethyl taurate / VPico 0.10 to 0.5% by weight of a polymer component selected from the group consisting of polymer, sodium polyacrylate, xanthan gum and 0.01 to 3% by weight of pH adjuster selected from the group containing tromethamine, citric acid, salicylic acid, glycolic acid, lactic acid and tartaric acid It may further include.

The polymer component is for improving water resistance, and when the content of the polymer component is less than the above range, the polymer component may be washed away with moisture and sweat. When the content of the polymer component exceeds the above range, the user's feeling may be reduced.

The pH adjusting agent may play a role of adjusting the pH of the hypoallergenic high moisturizing cosmetic composition using mild acidity to neutrality, which may well appear comfort and moisturizing power on the skin.

According to a preferred embodiment of the present invention, the oil phase part comprises a vegetable oil. Preferably, the vegetable oil comprises 73 to 75% by weight of lauric acid and 14 to 16% by weight of palmitic acid based on the weight of the oil. In addition, preferably, the vegetable oil according to the present invention contains 10 to 18 carbon chains of constituent fatty acids containing 98% by weight or more.

Examples of such vegetable oils include oil palm oil, oil palm kernel oil, or mixed oils thereof, and it has been found through the present invention that emulsification power can be maximized when used with fatty acid oils described below. .

According to a preferred embodiment of the present invention, the fatty alcohol may be selected from the group comprising myristyl alcohol, cetyl alcohol, stearyl alcohol, batyl alcohol, behenyl alcohol, cetostearyl alcohol. More preferably, the fatty alcohol to be used with the vegetable oil includes stearyl alcohol, behenyl alcohol, and cetostearyl alcohol.

In the present invention, the oil phase portion is an oil component, such as squalane, a hydrocarbon-based oil including mineral oil, dicaprylylcarbonate, caprylic / capric triglyceride, isopropyl isostearate, 2-octyldodecyl myristate and glyceryl Ester-based oils including trioctaonate, vegetable oils including macadamia oil and olive oil, and silicone oils including cyclomethicone, methicone and dimethicone, and these oil components are sticky and It helps to form finer emulsified particles while further improving heavy usability.

The composition according to the present invention can be prepared by the following procedure.

(a) heating and dissolving an aqueous phase comprising a polyol and a polymer and an oil phase comprising a fatty alcohol, a wax or an oil component; And

(b) adding the oil phase part of step (a) to the water phase and stirring using a homomixer.

 According to a preferred embodiment of the present invention, the step (a) comprises 50 to 90% by weight of the aqueous phase including the polymer and the polyol component, and 20 to 50% by weight of the oil phase including the fatty alcohol, wax or oil. After heating and dissolving at ℃, the oil phase may be added to the water phase to obtain a mixture.

The step (b) may be a step of preparing an oil-in-water emulsion by emulsifying the mixture of step (a) with a homomixer at a speed of 3500 ~ 6500rpm for 3 to 10 minutes.

Hereinafter, the content of the present invention will be described in more detail with reference to Examples. However, these examples are only presented to understand the content of the present invention, and the scope of the present invention should not be construed as being limited to these embodiments.

Examples 1 to 4 Preparation of an emulsifier-free emulsion cosmetic composition

Throughout this specification, "%" is used to indicate the concentration of a particular substance, unless otherwise stated solid / solid is (weight / weight)%, solid / liquid is (weight / volume)%, and Liquid / liquid is (volume / volume)%.

In the composition ratios shown in Table 1 below, purified water, glycerin, 1,2-hexanediol, acrylate / C10-30 alkyl acrylate crosspolymer, tromethamine, and phenoxy ethanol were used as the aqueous phase, and fat was used as the oil phase. After heating and dissolving alcohol, vegetable oil, dimethicone, cyclopentasiloxane, and squalane at about 75 to 80 ° C., the mixture obtained by adding the oil phase to the water phase is stirred at a speed of 6000 rpm with a Homomixer (Tokushu Kika Homo Mixer Mark 2). While emulsifying for 5 minutes to prepare an emulsifier-free cosmetic composition.

Composition of Emulsifier-free Emulsifying Cosmetic division ingredient Content (% by weight) Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Number
Prize
part Purified water Residual amount Residual amount Residual amount Residual amount Residual amount Residual amount Residual amount glycerin 3 5 10 20 10 5 10 1,2-hexanediol 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Acrylate / C10-30 Alkylacrylate Crosspolymer 0.13 0.20 0.25 0.3 - 0.5 0.25 Tromethamine 0.13 0.20 0.25 0.30 - 0.5 0.25 Phenoxyethanol 0.4 0.4 0.4 0.4 0.4 0.4 0.4 U
Prize
part Glyceryl Stearate / Pig-100 Stearate - - - - 2 - 2.5 Cetostearyl alcohol 0.6 0.6 1.0 1.0 - - - Behenyl Alcohol 0.6 0.6 1.0 1.0 - - - Stearyl alcohol 0.9 0.9 1.5 1.5 - - - Vegetable oil ^♪ 0.9 0.9 1.5 1.5 - - - Dimethicone 1.0 3.0 2.0 1.0 1.0 1.0 2.0 Cyclopentasiloxane 1.0 1.0 5.0 5.0 5.0 5.0 5.0 Squalane 2.0 3.0 5.0 10 10 5.0 5.0 Caprylic / Capric Triglycerides - - - 10 10 5.0 - Shea Butter - - 3 One One - 3 Particle size (㎛) 2-3 days uniform 2-3 days uniform 3-4 days uniform,
Dense
(Figure 1) 3-4 days uniform,
Dense 3-4 10 < 3-4
(Figure 3) stability no problem no problem no problem no problem × ×
Creaming phenomenon no problem * Stability condition: Check the appearance after 1 month at 50 ℃
O: Lee Sang-moo
X: Separation

♪: A mixture of oil palm oil and oil palm kernel oil by weight of 5: 5

The emulsion stability was confirmed by applying the above-mentioned polymer acrylate / C10-30 alkylacrylate crosspolymer and fatty alcohol. Compared with the surfactants commonly used in cosmetics, glyceryl stearate / pG-100 stearate, the emulsification capacity was similar.

In order to evaluate the moisturizing power of the cosmetics of Examples 1 to 3 and Comparative Example 3 was applied to the skin quantitatively, a method of evaluating the water retention capacity was used. In the test method, the cosmetics of Examples 1 to 3 and Comparative Example 3 were applied in a constant temperature and humidity room of 22 ° C and a relative humidity of 45%, respectively, after applying a predetermined amount (2mg / cm 2) to the inside of the arm of 10 subjects, and then rubbed well for 0 hours. The short term effect was evaluated by measuring the water retention increase rate (%) after 1 hour and 3 hours based on the water retention capacity of and is shown in Table 3.

Moisture retention result division Example 1 Example 2 Example 3 0 hours 0 0 0 1 hours 280 297 277 3 hours 245 256 248

The moisture content of the skin was measured using a skin moisture meter Skicon 200 (high frequency: 3.5 MHz, IBS, Japan) measuring the electrical conductivity of the skin. The Skicon 200 is a device that measures the moisture content of shallow skin (corresponding to the stratum corneum layer) at a frequency of 3.5 MHz. As shown in Table 3, it was found that there is no difference from the product using the emulsifier.

Skin irritation test of low irritation and high moisturizing cosmetic composition division Example 1 Example 2 Example 3 Example 4 Comparative Example 3 Average skin irritation 7.5 7.7 8.1 5.8 30 Irritancy judgment One One One One 3

(※ Closed patch test (2days), Patch number: 30 people)

Evaluation Criteria Value:

1 = 1.0 ~ 10.0: minimum stimulation,

2 = 10.1 ~ 20.0: mild stimulation,

3 = 20.1-40.0: moderate stimulus,

4 = 40.1 and above: severe irritation.

As shown in Table 3, it can be seen that the irritation degree is minimized when the emulsifier according to the present invention is not added. In order to determine the degree of stimulation more clearly, the results of applying emulsifiers commonly used in cosmetics are summarized in Table 4 below.

Skin irritation test of common cosmetic compositions division ingredient Content (% by weight) Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Number
Prize
part Purified water Residual amount Residual amount Residual amount Residual amount Residual amount glycerin 5 5 10 5 15 Butylene glycol 5 - 5 10 5 Carbomer 0.10 0.15 0.2 0.1 0.25 Triethanolamine 0.09 0.15 0.2 0.1 0.25 U
Prize
part C14-22 alcohol - 0.5 One 1.5 0.5 Sucroscocoate with sorbitan stearate - - 1.5 - - Stearic acid - 0.5 0.75 0.5 - Polysorbate 60 - 0.25 0.5 0.5 0.75 Isohexadecane - 2 2 2 - Triethylhexanoin - 2 5 2 - Sorbitan sesquioleate - - - 3 - Dimethicone - 3 5 2 5 Glyceryl Stearate / Pig-100 Stearate - One 2 0.75 - C14-22 Alcohol / C12-20 Alkyl Glucoside - - One 2 - Shea Butter - - 0.5 2 - Fiji-60 Cured Castor Oil 0.5 - - - - Formulation Type skin Lotion cream Eye cream Sleep pack

The product is a prescription ingredient for the company's products as a general ingredient used in manufacturing cosmetics.

Skin irritation test of low irritation and high moisturizing cosmetic composition division Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Average skin irritation 35.0 32.5 34.9 31.5 38.9 Irritancy judgment 3 3 3 3 3

(※ Closed patch test (2days), Patch number: 30 people)

Evaluation Criteria Value:

1 = 1.0 ~ 10.0: minimum stimulation,

2 = 10.1 ~ 20.0: mild stimulation,

3 = 20.1-40.0: moderate stimulus,

4 = 40.1 and above: severe irritation.

As shown in Table 5, in general, for the product to which the emulsifier and the solubilizer is added, it can be seen that 3 or more comes out based on the closed patch test.

Therefore, the present invention was found to be a hypoallergenic high moisturizing cosmetic composition which minimizes irritation while stabilizing the oil in oil-in-water emulsion type without adding an emulsifier.

Claims (10)

It does not include a separate emulsifier, and includes an emulsion obtained by adding and homogenizing the oil phase portion containing fatty alcohol, vegetable oil and silicone oil to the water phase, wherein the water phase portion and the oil phase portion,
(a) 50 to 90% by weight of the water phase including 1 to 30% by weight of polyol and 0.10 to 1.0% by weight of the polymer, based on the weight of the water phase; And
(b) 10 to 50% by weight of the oil phase, including 1 to 40% by weight of fatty alcohol, and 1 to 20% by weight of vegetable oil, based on the weight of the oil phase,
The fatty alcohol includes stearyl alcohol, behenyl alcohol, and cetostearyl alcohol,
The vegetable oils include oil palm oil, oil palm kernel oil or mixed oils thereof, and include lauric acid 73-75% by weight and palmitic acid 14-16% by weight based on the weight of the vegetable oil. Emulsifier-free emulsified cosmetic composition, characterized in that 98 to 10% by weight of 10 to 18 carbon chains of fatty acids. delete delete delete delete delete delete Heating and dissolving the oil phase including no fatty emulsifier and including fatty alcohol, vegetable oil and silicone oil; And adding the dissolved oil phase part to a water phase part to homogenize to obtain an emulsion, wherein the water phase part and the oil phase part,
(a) 50 to 90% by weight of the water phase including 1 to 30% by weight of polyol and 0.10 to 1.0% by weight of the polymer, based on the weight of the water phase; And
(b) 10 to 50% by weight of the oil phase, including 1 to 40% by weight of fatty alcohol, and 1 to 20% by weight of vegetable oil, based on the weight of the oil phase,
The fatty alcohol includes stearyl alcohol, behenyl alcohol, and cetostearyl alcohol,
The vegetable oils include oil palm oil, oil palm kernel oil or mixed oils thereof, and include lauric acid 73-75% by weight and palmitic acid 14-16% by weight based on the weight of the vegetable oil. A method for producing an emulsifier-free emulsified cosmetic composition, characterized in that 98 to 10% by weight of 10 to 18 carbon chains of fatty acids are contained. delete delete

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