KR100943395B1 - Semi-stick cosmetic composition - Google Patents

Abstract

The present invention relates to a semi-solid cosmetic composition in the past, characterized in that it comprises 5.0 to 30.0% by weight of tetraester-based oil and 0.01 to 15.0% by weight of powder based on the total weight of the composition. Semi-solid cosmetic composition according to the present invention is not only excellent in long-term storage stability, but also excellent in use, almost no skin irritation and good long-term stability of the active ingredient.

Semi-solid, Paste, Tetraester Oil

Description

Semi-solid cosmetic composition {SEMI-STICK COSMETIC COMPOSITION}

The present invention relates to a semi-solid cosmetic composition in the form of a paste, and more particularly, to a semi-solid cosmetic composition having excellent long-term storage stability and excellent usability, almost no skin irritation, and good long-term stability of the active ingredient.

In general, semi-solid cosmetics refers to a paste formulation that can be used by hand like a cream, although its external properties are similar to those of sticks because it does not show a big difference from ordinary sticks because of its non-flowing properties. It has a state in which non-liquidity is maintained.

Currently, cream, one of the basic cosmetics that are commercially available, is a kind of emulsion, which has less fluidity than other emulsions, and thus has a wide range of stability, and contains a very large proportion of oil, moisturizer, and moisture, and serves various functional purposes. Since various ingredients can be included to achieve the product, it is commercialized in various products having functions such as skin moisturizing, softening function, other blood promotion, cleansing, and cleansing. However, despite the advantages associated with the implementation of multifunctionality, in the mixing process of various components, certain functionally effective components may be destroyed by physical and chemical actions between the components, and the color may be discolored during long-term preservation. Technical limitations are exposed.

On the other hand, solid cosmetics in the cosmetics industry is divided into a stick form such as lipstick, cake form such as two-way cake, pencil form such as eyeliner. In recent years, various types of stick products for basic products have been released as products for topical use by utilizing advantages such as ease of use and convenience of carrying, which are characteristics of solid cosmetics. In particular, in the solid cosmetics there is an advantage that the efficacy of the product can be maintained for a long time by the presence of the active ingredients contained therein mutually stable. The related technology is presented through Korean Patent No. 041205, Korean Patent Publication No. 2002-0066276, and Korean Patent Publication No. 2002-070570. However, in spite of the above-mentioned advantages of the solid cosmetics, due to the reason that a large amount of oil and wax or the like must be used therein, the feeling remaining on the skin during or after the use of the solid cosmetics is not neat, rather burdensome, and not moist. It is attached to the skin in a state, the absorption is not made well into the skin, giving a feeling of appearance on the skin has not been confirmed that the use feeling is not good.

Semi-solid paste formulations, which are halfway between conventional creams and sticks, have lower hardness than sticks, which are solid cosmetics, causing problems with product stability, such as sweating or precipitation of wax over time after use. As a result, difficulties in commercialization have been suggested.

In the cosmetic formulations, various efforts to realize long-term maintenance of product stability of cosmetic compositions having semi-solid paste-like formulations have been continuously conducted in the related industry, and the present invention has been devised based on such technical background. .

Accordingly, the technical problem to be solved by the present invention is to solve the above problems, to provide a semi-solid cosmetic composition that is excellent in long-term storage stability and excellent in use, there is little skin irritation and good long-term stability of the active ingredient. .

In order to achieve the above technical problem, the present invention provides a semi-solid cosmetic composition comprising 5.0 to 30.0 wt% of tetraester-based oil and 0.01 to 15.0 wt% of powder based on the total weight of the composition.

In the semi-solid cosmetic composition according to the present invention, it is preferable to use pentaerythritol tetraethylhexanoate having a structure represented by the following general formula (1) as the tetraester oil.

In Chemical Formula 1, R has a structure represented by the following Chemical Formula 2.                     

Hereinafter, the present invention will be described in more detail and in detail.

Tetra ester oils, such as pentaerythritol tetraethylhexanoate, contained in the semi-solid cosmetic composition according to the present invention have a moist feeling and quick absorption, which are different from ordinary oils, It increases the compatibility and contributes to the stability of semi-solid cosmetic products. The content of the tetraester-based oil contained in the semi-solid cosmetic composition according to the present invention is 5.0 to 30.0% by weight, preferably 10.0 to 20.0% by weight based on the total weight of the composition. If the content is less than 5.0% by weight, it is not preferable because the feeling of use or formulation stability peculiar to the semi-solid cosmetics is not preferable, and when the content exceeds 30.0% by weight, it is not preferable because problems of use are difficult to float by hand.

In addition, as the powder contained in the semi-solid cosmetic composition according to the present invention can be used a variety of powders used in cosmetics, silica (Silica), porous cellulose (Porous Cellulose), polymethyl methacrylate (PMMA, Polymethylmetacrylate ) And polyamides are preferably used alone or in combination. These polymer powders impart a soft texture to the cosmetics and enhance absorbency, prevent bleeding, and provide a soft feeling without stickiness and contribute to formulation stability. The content of the powder contained in the semi-solid cosmetic composition according to the present invention is 0.01 to 15.0% by weight, preferably 1.0 to 10.0% by weight, based on the total weight of the composition. When the content of the powder is less than 0.01% by weight, the effect of the feeling of use is insignificant, and it is not preferable. When the content of the powder exceeds 15.0% by weight, the base odor problem occurs over time and is not preferable because it gives a too stiff feeling when used.

In addition to the above main components, the semi-solid cosmetic composition of the present invention may contain other oil components, wax components, nonionic surfactants, humectants and the like. Other oils other than tetra ester-based oils may be added, for example, by adding 5.0 to 30.0% by weight of one or two or more of vegetable, mineral and synthetic oils. As the wax component, one or two or more of animal, vegetable and mineral waxes may be used in combination, for example, 1.0 to 10.0 wt% may be added. In addition, nonionic surfactants and humectants may be added, for example, from 0.1 to 5.0% by weight and from 1.0 to 10.0% by weight, respectively.

The hardness of the cosmetic preparation prepared using the semi-solid paste-like cosmetic composition according to the present invention is an intermediate state between the cream and the stick, the hardness of which is 200 to 1800 (FUDOH RHEO METER, Adapter Spindle No 3 (φ 10), Depth 2mm, 25 ℃) degree.

Hereinafter, an Example and a comparative example are given and demonstrated in order to demonstrate this invention concretely. Embodiments according to the present invention described below may be modified in many different forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. Embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art.

Examples 1 to 6 and Comparative Examples 1 to 3

Following the respective compositions shown in Table 1, the aqueous phase and the oil phase were completely dissolved by heating to 80 to 90 ° C., and the polymer powder was slowly added while stirring the oil phase with a disper, and finally after the aqueous phase was added to room temperature. It was prepared by the method of cooling.

division Raw material name (weight part) Example Comparative example One 2 3 4 5 6 One 2 3 Paid Trioctanoine to 100 to 100 to 100 to 100 to 100 to 100 to 100 to 100 to 100 Polyglyceryl-2 Triisostearate 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 Pentaerythritol tetraethylhexanoate 10.0 20.0 20.0 20.0 20.0 20.0 - 20.0 - Candelina wax 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 Carnauba Wax 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 Ceresin 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Cetostearyl alcohol 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Sorbitan monosulfate 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Powder nylon 10.0 10.0 - - - 6.0 - - 6.0 Silica - - 10.0 - - 4.0 - - 4.0 PMMA - - - 10.0 - 1.0 - - 1.0 cellulose - - - - 10.0 3.0 - - 3.0 Awards Propylene glycol 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Concentrated glycerin 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Pigment q.s q.s q.s q.s q.s q.s q.s q.s q.s Lactic acid - 1.0 - 1.0 - 1.0 1.0 1.0 1.0 Sodium lactate - 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 incense q.s q.s q.s q.s q.s q.s q.s q.s q.s

Comparative Example 4 and Comparative Example 5

Comparative Example 4 was prepared by the conventional lipstick manufacturing method of heating the aqueous phase and oil phase to 70 to 90 ℃ according to the composition shown in Table 2, then adding the aqueous phase to the oil phase and stirring with a disper, the formulation is a solid. . Comparative Example 5 used a method for preparing a water-in-oil emulsion in which each component was divided into an oil phase and an aqueous phase and heated to 70 to 90 ° C. according to the composition shown in Table 2, and then the aqueous phase was added to the oil phase. A creamy emulsion.

division Raw material name (weight part) Comparative example 4 5 Paid Trioctanoine to 100 3.0 Isostearyl isostearate 20.0 2.0 Cyclomethicone - 10.0 Candelina wax 3.0 - Carnauba Wax 2.5 - Ceresin 10.0 - lanolin 8.5 - Dimethicone Copolymer - 1.5 Cyclomethicone & Polysilicon-11 - 4.0 5,15-diacetyl-3-benzoylatilol 5.0 2.0 Sorbitan sesquioleate - 0.5 Stealconium hectorite 0.5 - Awards Magnesium sulfate - 0.5 Dipropylene glycol - 5.0 Concentrated glycerin - 5.0 Sodium lactate - 2.0 Lactic acid - 1.0 antiseptic q.s q.s incense q.s q.s Pigment q.s q.s Triethanolamine - q.s Purified water - to 100

Stability evaluation

The stability evaluation was stored for 1 month in a 50 ° C, 0 ° C, 40 ° C and 45 ° C cycle chamber (cycle chamber, -10 ° C → 45 ° C → -10 ° C), and then observed the state of the product to evaluate the stability. The evaluation score was marked as XX if very good, O if good, △ normal, X if some separation and sweating occurred, and XX if severe separation and sweating occurred.

As shown in Table 3, Comparative Examples 1 to 3 can confirm the unstable results compared to each example. This is caused by the separation of oil and water phase between the wax structure and the product, and it can be seen that the phenomenon is more unstable in cycle chamber and high temperature.

division Comparative example Example One 2 3 4 5 One 2 3 4 5 6 50 ℃ XX X X ◎ ◎ ◎ ◎ ◎ O O ◎ 45 ℃ XX △ X ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 40 ℃ X O X ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 0 ℃ △ O O ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ Cycle XX X X △ ◎ ◎ O O ◎ O ◎ Room temperature △ O △ O ◎ ◎ ◎ ◎ ◎ ◎ ◎

Usability Evaluation

After the cosmetics were manufactured using the composition which has the composition of the said Example and a comparative example, 20 panelists from 20s to 40s judged the usability by sensory evaluation. At this time, the usability evaluation score was expressed as 5 points if very excellent, 3 points if excellent, 0 points if normal, -3 points for bad, -5 points for very bad. About the evaluation score for each individual, the rating was calculated by the following formula 1, and the final results are shown in Table 4 below.

division Comparative example Example One 2 3 4 5 One 2 3 4 5 6 grade 2.0 2.8 2.6 2.0 3.5 3.8 4.0 3.5 3.4 3.8 3.5

As can be seen from the rating results for the Examples and Comparative Examples shown in Table 4, in general, the Examples were evaluated to have a superior usability than the Comparative Examples. In particular, it can be seen that the emulsion formulation of the cream has a higher or better rating than each of the Examples compared to Comparative Example 5.

Transdermal Absorption Results

In vitro skin permeation tests were performed using the skin of hairless mice to assess transdermal absorption for lactic acid. A 0.05 g sample was applied to the skin surface having a diameter of 15.0 mm, and the amount of lactic acid permeated after 24 and 48 hours using a transdermal absorber (Hanson Micriette) was quantified by liquid chromatography, and the transmittance is shown in Table 5 below. . In each of the examples shown in Table 5, it was observed that the percutaneous absorption progresses slowly in comparison with Comparative Example 5, which is a cosmetic of the creamy emulsion formulation.

sample Example Comparative example 2 4 6 4 5 Transmittance after 24 hours 5.12 5.02 5.31 5.22 15.55 Transmittance after 48 hours 9.98 9.92 10.13 9.95 20.32

Skin primary irritation test (closed cloth test)

In order to examine the skin irritation with respect to the above Examples and Comparative Examples, 15 ㎍ of each sample on the arm of a healthy adult male, 50 females for 24 hours, after removing the pin chamber and after 4 hours, The skin condition changes were visually read and the results are shown in Table 6 below.

At this time, the criterion is '-' if there is no erythema or unusual phenomenon, '+-' if it is slightly reddish than the surroundings, '+' if it is significantly redder than the surroundings, and reddening and swelling more heavily than the surroundings. Indicated by '++'. On the other hand, in order to represent the determination result according to the criterion as a relative value, the stimulus degree is calculated and shown by the following equation (2).

sample Number of subjects Judgment result Stimulus ++ + +- - Comparative example 4 50 - - One 49 0.02 5 50 - 2 5 43 0.18 Example One 50 - - One 49 0.02 2 50 - - One 49 0.02 3 50 - - - 50 0.00 4 50 - - - 50 0.00 5 50 - - One 49 0.02 6 50 - - One 49 0.02

As a result of the irritation (safety) test of Table 6, it was observed to be relatively safe for each Example and Comparative Example 4, the stick formulation, but Comparative Example 5, a creamy emulsion formulation was observed to show a relatively high irritation. It can be seen that this is also consistent with the percutaneous absorption results observed in Table 5.

The semi-solid cosmetic composition according to the present invention is excellent in long-term storage stability, excellent in use, almost no skin irritation, and excellent effect on the long-term stability of the active ingredient, it has the advantages of the cosmetics of the conventional cream and stick formulation It is possible to manufacture a product having better compatibility while maintaining the same.

Claims (3)

In the semi-solid cosmetic composition, The composition has a hardness of 200 to 1800, Based on the total weight of the composition 5.0 to 30.0 wt% of a tetraester-based first oil; 5.0-30.0 wt% of a non-tetra ester-based second oil; Wax 1.0 to 10.0 wt%; And Powder 0.01 to 15.0% by weight, The tetra-ester-based oil is a semi-solid cosmetic composition, characterized in that the pentaerythritol tetraethylhexanoate represented by the formula (1): <Formula 1>

In Chemical Formula 1, R has a structure represented by the following Chemical Formula 2. <Formula 2>

delete The method of claim 1, wherein the powder is at least one polymer powder selected from the group consisting of silica, porous cellulose (Porou Cellulose), polymethyl methacrylate (PMMA, Polymethylmetacrylate) and polyamide (Polyamide) Semi-solid cosmetic composition, characterized in that.