Oil-dispersed solid cosmetic composition containing hyaluronic acid

Abstract

The present invention relates to an oil-dispersed solid cosmetic composition containing hyaluronic acid, which can realize a stable dosage form by uniformly dispersing hyaluronic acid as a water-soluble component in an oil phase, and has the effect of improving skin moisturizing due to the inclusion of hyaluronic acid.

Description

Technical Field

[0001] The present invention relates to an oil-dispersed solid cosmetic composition comprising hyaluronic acid and thereby having an improved moisturizing effect. Background Art

[0002] When the oil-water balance in the skin is broken, the skin becomes drier or the sebum secretion increases, which leads to worsening of skin condition, so it is very important to regulate the oil-water balance in the skin. Especially when the skin becomes dry due to lack of moisture, keratin is easily produced, the skin is easily damaged by external stimuli, and skin problems are prone to occur.

[0003] Hyaluronic acid is an ingredient that is naturally present in the skin, but its content decreases with aging, causing the skin to become dry and causing fine lines. Hyaluronic acid has the ability to attract and store 200 times its own volume of water, and is a known ingredient that exists in subcutaneous tissue and is very good at replenishing moisture and helping to maintain a youthful-looking skin. Therefore, recently, hyaluronic acid cosmetics that can be applied or hyaluronic acid nutrients that can be consumed like vitamins are being developed.

[0004] On the other hand, conventional oil-dispersed solid cosmetic compositions have the advantage of helping to moisturize the skin by mixing a high content of oil and forming an oil film when applied to the skin. However, since it is difficult to mix water-soluble raw materials into oil-dispersed solid cosmetic compositions containing a high content of oil, when mixing water-soluble raw materials, the formulation stability is greatly adversely affected.

[0005] Therefore, there is an urgent need to develop an oil-dispersible solid cosmetic composition in which a water-soluble component is uniformly dispersed by applying hyaluronic acid as a water-soluble component to the oil-dispersible solid cosmetic composition. Summary of the invention

[0006] Technical issues

[0007] The present inventors have conducted intensive studies to develop a stable oil-dispersed solid cosmetic composition mixed with a water-soluble raw material. As a result, it has been confirmed that an oil-dispersed solid cosmetic composition containing hyaluronic acid achieves a stable dosage form and has an improvement effect on skin moisturizing.

[0008] Therefore, an object of the present invention is to provide an oil-dispersed solid cosmetic composition comprising hyaluronic acid, oil, wax and butter.

[0009] Solutions to the problem

[0010] Hereinafter, the present invention will be described in more detail.

[0011] One aspect of the present invention relates to an oil-dispersed solid cosmetic composition comprising hyaluronic acid, oil, wax and butter.

[0012] In the present invention, the hyaluronic acid may be one or more selected from the group consisting of sodium hyaluronate, hydrolyzed hyaluronic acid, hydroxypropyltrimonium hyaluronate, hyaluronic acid and sodium acetylated hyaluronate, but is not limited thereto.

[0013] In the present invention, the content of hyaluronic acid can be 0.01-1.0 weight%, 0.01-0.8 weight%, 0.01-0.6 weight%, 0.1-1.0 weight%, 0.1-0.8 weight%, 0.1-0.6 weight%, 0.3-1.0 weight%, 0.3-0.8 weight%, 0.3-0.6 weight%, for example, 0.6 weight%, relative to the total weight of the cosmetic composition, but is not limited thereto.

[0014] In the present invention, the oil can be selected from the group consisting of polyglyceryl-2 triisostearate, sunflower seed oil, coconut oil, sweet almond oil, pyrus malus (apple) seed oil, hydrogenated castor oil, meadowfoam seed oil, triethylhexanoin, diisostearyl malate, olive oil, castor oil, avocado oil, almond oil, rosehip oil, macadamia nut oil, mink oil, liquid paraffin / paraffin oil, vaseline, myristic acid isopropyl, silicone oil, etc. Oil), jojoba oil, green tea oil, grape seed oil, argan oil and hydrogenated polydecene.

[0015] In the present invention, the content of oil, relative to the total weight of the cosmetic composition, may be 50.0-90.0% by weight, 50.0-85.0% by weight, 50.0-80.0% by weight, 55.0-90.0% by weight, 55.0-85.0% by weight, 55.0-80.0% by weight, 60.0-90.0% by weight, 60.0-85.0% by weight, 60.0-80.0% by weight, 65.0-90.0% by weight, 65.0-85.0% by weight, 65.0-80.0% by weight, 70.0-90.0% by weight, 70.0-85.0% by weight, for example, 70.0-80.0% by weight, but is not limited thereto.

[0016] In the present invention, the wax may be one or more selected from the group consisting of candelilla wax, microcrystalline wax, octyldodecanol, bees wax, copernicia cerifera (carnauba) wax, ceresin, synthetic wax, synthetic beeswax and ozokerite, but is not limited thereto.

[0017] In the present invention, relative to the total weight of the cosmetic composition, the content of the wax may be 5.0-40.0% by weight, 5.0-35.0% by weight, 5.0-30.0% by weight, 5.0-25.0% by weight, 5.0-20.0% by weight, 10.0-40.0% by weight, 10.0-35.0% by weight, 10.0-30.0% by weight, 10.0-25.0% by weight, 10.0-20.0% by weight, 15.0-40.0% by weight, 15.0-35.0% by weight, 15.0-30.0% by weight, 15.0-25.0% by weight, 15.0-20.0% by weight, for example, 20.0% by weight, but is not limited thereto.

[0018] In the present invention, the butter may be selected from shea butter, mango seed butter, cocoa seed butter, cupuacu seed butter, At least one selected from the group consisting of, but not limited to, Cocos Nucifera (Coconut) Seed Butter, Shorea Robusta Seed Butter and Garcinia Indica Seed Butter.

[0019] In the present invention, the butter may be contained in an amount of 2.0-10.0 wt%, 2.0-8.0 wt%, 2.0-6.0 wt%, 4.0-10.0 wt%, 4.0-8.0 wt%, 4.0-6.0 wt%, for example, 5.0 wt%, relative to the total weight of the cosmetic composition, but is not limited thereto.

[0020] In the present invention, the oil-dispersed solid cosmetic composition may further include an antioxidant and a preservative, but is not limited thereto.

[0021] Effects of the Invention

[0022] The present invention relates to an oil-dispersed solid cosmetic composition containing hyaluronic acid, which can realize a stable dosage form by uniformly dispersing hyaluronic acid as a water-soluble component in an oil phase, and has the effect of improving skin moisturizing due to the inclusion of hyaluronic acid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The photographs show the dosage forms of Example 1, Example 2 and Comparative Example 2 according to an experimental example of the present invention.

[0024] Figure 2 1 is a bar graph showing the evaluation results of the skin moisturizing effects of Example 1, Example 2 and Comparative Example 2 according to an experimental example of the present invention. DETAILED DESCRIPTION

[0025] Hereinafter, the present invention will be described in more detail by the following examples. However, these examples are only used to illustrate the present invention, and the scope of the present invention is not limited to these examples.

[0026] Preparation Example: Preparation of Examples and Comparative Examples

[0027] The oil-dispersed solid cosmetic compositions of Example 1 and Comparative Example 1 were prepared according to the components and contents described in Table 1 below.

[0028] Table 1

[0029]

[0030]

[0031] Specifically, all raw materials were weighed into a beaker according to the components and contents listed in Table 1, and then uniformly mixed at 25 rpm for 5 minutes using a vacuum emulsifier (Agi-Mixer) while heating at 75° C. to 85° C. Next, the mixture was deaerated and poured into a stick-shaped container to be cooled to prepare a stick-shaped cosmetic composition.

[0032] Experimental Example 1: Evaluation of Dosage Form Stability

[0033] The stability of the formulations of Example 1, Example 2 and Comparative Example 1, Comparative Example 2 was confirmed. Specifically, each cosmetic composition was placed under 4°C, room temperature, 37°C, 45°C and light conditions for 1 day, 5 days, 1 week, 2 weeks and 4 weeks to evaluate the stability of the formulation. The results are shown in Table 2 and Figure 1 The evaluation criteria are as follows.

[0034] Evaluation Criteria

[0035] ◎: stable;

[0036] △: slightly unstable;

[0037] X: Unstable.

[0038] Table 2

[0039]

[0040]

[0041] From the above Table 2 and Figure 1 It can be confirmed that the dosage forms of Example 1, Example 2 and Comparative Example 2 are stable even after 4 weeks of preparation. However, since Comparative Example 1 cannot form a rod-shaped dosage form, it is excluded from the stability observation range. In addition, although the dosage form of Comparative Example 2 is stable, the wax content is greater than 40% by weight, so the hardness of the dosage form is high and the spreadability is significantly reduced.

[0042] Experimental Example 2: Skin Moisturizing Evaluation

[0043] In order to evaluate the skin moisturizing effect of Example 1, Example 2 and Comparative Example 2, 20 subjects aged 20 to 40 were used as subjects for skin moisturizing evaluation. In order to measure the moisture content in the skin epidermis, the ion level of the water was measured and digitized, and the skin moisturizing power was confirmed using a skin moisture tester (corneometer; CK electronic, Germany) sensor. The skin moisture content is expressed as skin moisture content (%), and the results are shown in Table 3 and Table 4 under the conditions of constant temperature 22±2℃ and constant humidity (relative humidity) 40% to 60%. Figure 2 shown.

[0044] Table 3

[0045] (Unit: Skin moisture content %) Example 1 Example 2 Comparative Example 2 0 hours 100.0 100.0 100.0 0.5 hours 148.3 104.2 121.5 2 hours 111.8 101.7 105.7 4 hours 112.3 100.8 104.8 8 hours 110.1 101.3 103.5

[0046] From the above Table 3 and Figure 2 It can be confirmed that the skin moisture content of Example 1 at 0.5 hours was 148.3%, the skin moisture content at 2 hours was 111.8%, the skin moisture content at 4 hours was 112.3% and the skin moisture content at 8 hours was 110.1%. Example 1 showed higher moisture content at all times compared with Example 2 and Comparative Example 2.

[0047] This confirmed that Example 1 has an excellent skin moisturizing effect.

[0048] Experimental Example 3: Sensory Evaluation

[0049] After Example 1, Example 2 and Comparative Example 2 were applied to the skin of 20 male / female panelists aged 20 to 40, the spreadability, glossiness, absorption, moisturizing feeling and overall satisfaction felt during application were evaluated according to the following evaluation criteria. The results are shown in Table 4 below.

[0050] In the above standards, spreadability refers to the degree to which a composition spreads softly without a sense of braking when applied in a spreading manner. Glossiness refers to the degree of skin gloss immediately after application and 10 minutes after application. Absorption refers to the degree to which a composition is absorbed by the skin 10 minutes after application. Moisturizing refers to the feeling that the composition is moist on the skin, without a sticky, viscous or greasy feeling, 10 minutes after application. These four standards increase the use value as a cosmetic, and in particular, absorption and moisturizing may be important characteristics of an oil-dispersed solid cosmetic composition.

[0051] Evaluation Criteria

[0052] ◎: Rated as excellent by more than 15 users;

[0053] ○: Rated as excellent by 10 to 14 users;

[0054] △: Rated as excellent by 9 or fewer users.

[0055] Table 4

[0056] Spreadability Gloss Absorption Moisturizing feeling Overall satisfaction Example 1 ◎ ◎ ○ ◎ ◎ Example 2 ◎ ◎ ○ △ ○ Comparative Example 2 △ △ ○ △ △

[0057] As can be seen from Table 4, Example 2 was evaluated as having a low moisturizing feel compared to Example 1. Furthermore, Comparative Example 2 was harder than Example 1, so the spreadability was poor, resulting in reduced glossiness and moisturizing power. In contrast, Example 1 was evaluated high in spreadability, glossiness, and moisturizing feel, and was rated highest in overall satisfaction.

Claims

1. An oil-dispersed solid cosmetic composition, characterized in that: Comprising 0.01-1.0 wt % of hyaluronic acid, 50.0-90.0 wt % of oil, 5.0-40.0 wt % of wax and 2.0-10.0 wt % of butter, relative to the total weight of the cosmetic composition; wherein: The hyaluronic acid includes sodium hyaluronate, The oil comprises at least one selected from the group consisting of polyglyceryl-2 triisostearate, sunflower seed oil, sweet almond oil, apple seed oil, hydrogenated castor oil and meadowfoam seed oil, The wax comprises at least one selected from the group consisting of candelilla wax, microcrystalline wax and octyl dodecanol, and The butter includes shea butter.

2. The oil-dispersed solid cosmetic composition according to claim 1, characterized in that The hyaluronic acid further includes at least one selected from the group consisting of hydrolyzed hyaluronic acid, hydroxypropyltrimonium chloride hyaluronic acid, hyaluronic acid and acetylated sodium hyaluronate.

3. The oil-dispersed solid cosmetic composition according to claim 1, characterized in that The oil further includes at least one selected from the group consisting of coconut oil, triethylhexanoin, diisostearyl malate, olive oil, castor oil, avocado oil, almond oil, rosehip oil, macadamia oil, mink oil, liquid paraffin, petrolatum, isopropyl myristate, silicone oil, jojoba oil, green tea oil, grape seed oil, argan oil, and hydrogenated polydecene.

4. The oil-dispersed solid cosmetic composition according to claim 1, characterized in that: The wax further includes at least one selected from the group consisting of beeswax, carnauba wax, psilocin, and ozokerite.

5. The oil-dispersed solid cosmetic composition according to claim 1, characterized in that: The waxes further include synthetic waxes.

6. The oil-dispersed solid cosmetic composition according to claim 1, characterized in that: The waxes further include synthetic beeswax.

7. The oil-dispersed solid cosmetic composition according to claim 1, characterized in that: The butter further includes at least one selected from the group consisting of mango seed butter, cocoa seed butter, cupuacu seed butter, coconut seed butter, sauvignon ovata seed butter, and garcinia indica seed butter.

8. The oil-dispersed solid cosmetic composition according to claim 1, characterized in that: The oil-dispersed solid cosmetic composition further comprises an antioxidant and a preservative.

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