KR100695607B1 - Cosmetics of water in silicon type for facewashing - Google Patents

Abstract

The present invention relates to a face-washing cosmetic of water (W / S) type of silicone, and does not contain general mineral oil or ester oil, and can effectively remove makeup using only silicone oil. And when it contains an anti-inflammatory agent relates to a face-to-face cosmetics suitable for washing acne and oily skin. In particular, it may be contained a large amount of the water phase in the inner phase so as to have a feeling such as oil in water (O / W) type.

Description

Facial cleanser of water type among silicon {COSMETICS OF WATER IN SILICON TYPE FOR FACEWASHING}

 1 is a graph showing the antibacterial effect of the face-wash cosmetic of the present invention

The present invention relates to a face wash cosmetics, and more particularly, to a face-type cosmetic face wash in silicone containing a large amount of water phase.

In general, there are solvent-type cleansing creams for selecting and using oils having excellent dissolving and removing power of makeup, surfactant-type gels or liquid cleansing bases for capturing and removing makeup particles with a surfactant.

The cream-type cleansing base mainly uses mineral oil and ester oil, but people who have acne or oily skin that have a lot of sebum secretion and tend to cause various troubles on the skin use this cream-type face wash. This is undesirable because it results in the supply of oil through.

In addition, the solvent-based cleansing base is poorly soluble in hydrophilic contaminants such as sweat, dust, aged keratin, etc., it is difficult to expect a sufficient cleansing effect. Therefore, makeup or other contaminants that remain uncleaned may clog pores or pores and cause various skin problems, especially anaerobes, which may grow in clogged pores or pores, in which case acne or rashes, etc. It is likely to cause or worsen.

Since the surfactant-type cleansing base contains a large amount of surfactant, residual surfactant adsorbed on the skin after washing the face weakens or swells the lamellar structure of the intercellular lipids that acts as a barrier of the skin, thereby causing the substances that are irritating agents to enter the skin easily. It makes it possible to penetrate or facilitate the penetration of bacteria, causing skin irritation such as erythema or skin trouble easily caused by microorganisms.

In addition, water-soluble gels or liquid-type cleansing bases have a refreshing feeling in their characteristics, but are not suitable as a face-washing cosmetic because they have a relatively weak cleaning power and are difficult to sufficiently remove contaminants such as makeup.

Conventionally, the cleaning related techniques for removing skin contaminants such as makeup have been mainly studied for the excellent usability or the efficiency of face washing, but the study of an effective face wash that can safely alleviate and improve skin trouble for acne or oily skin has been studied. It wasn't good enough.

Japanese Patent Application Laid-Open No. H10-7522 (L'Oreal) describes an emulsion formulation of an oil-in-water type, and Japanese Patent Application Laid-open No. Hei 8-151316 (L'Oreal) has a self-emulsifying property based on fatty alcohol. Although a stable lotion-type cleansing emulsion containing a composition as an emulsifier and an acrylic copolymer as a gelling agent has been proposed, there is a problem that it is difficult to expect a sufficient cleansing effect due to the lack of the amount of the oil for washing. Patent No. 3,944,506 (Banez Hind Pharmaceutical Co., Ltd.) states that by combining sulfuric acid derivatives in facial cleansing creams, it can help treat oily skin and acne, but the safety of these sulfuric acid derivatives on the skin has not been sufficiently verified. , U.S. Patent No. 4,297,374 (Bitless) and U.S. Patent No. 5,360,824 (Donald Barker) use bananas and avocado fruit or scrub In the to the, but proposes a three pigment, improving wrinkles of the contaminant removal effect and the skin effect with a function, such as providing or improving wrinkles of the cleansing mechanism for dry skin using hard to expect its superiority.

Korean Patent Publication No. 98-55066 (LG Chem) proposes a face wash that can be used for tissue off or wash off using high-quality alcohol, but the removal performance of makeup is insufficient, and Korean Patent Publication No. 99-54329 (LG) Chemistry) and Japanese Patent Application Laid-open No. Hei 10-36221 (Noebbia) provide wash-offs that can wash off both high-fat fatty acid soaps and oils at the same time. There was no choice but to.

The present inventors improve the ability to remove makeup and hydrophilic contaminants, which are the main problems of the above-described conventional cleaning mechanisms, and at the same time, have a bactericidal effect against bacteria in the stratum corneum of the skin, and have already formed acne or rashes. As a result of repeating research on a cleansing mechanism capable of providing a facial cleansing agent that can alleviate skin problems such as erythema, the present invention has been completed.                         

Accordingly, an object of the present invention is to provide a cream-type facial cleansing agent that can alleviate or improve the skin trouble by removing the fungus causing the skin trouble while having an excellent cleansing effect.

Looking at the constituents used to achieve the object of the present invention, as an oil, using only silicone oil which is safe and inert to the skin without using mineral oil or ester oil and has anti-inflammatory effect and antibacterial activity against skin flora Use antibacterial agents together.

In addition, the cosmetic formulation of the present invention is water-in-silicon (W / S) type of silicone, which can immediately dissolve makeup contaminants when used on the skin.

W / S cream type facial cleansing composition of the present invention

1) 5 ~ 40% by weight of liquid silicone oil

2) 0.1 ~ 20% by weight of auxiliary emulsifier or silicone emulsifier

3) 0.1 to 10% by weight of nonionic surfactant as a cleaning agent for continuous phase

4) 0.01-1% by weight of a single or combination antimicrobial agent as an optional ingredient

5) As an optional ingredient, 0.01 to 3% by weight of a single or combination anti-inflammatory agent may be included.

As the liquid silicone oil used in the present invention, a modified liquid silicone having a linear, branched or cyclic molecular structure or partially substituted with fluorine may be used, and as an auxiliary emulsifier, hydrophilic, lipophilic or amphiphilic nonionics. An emulsifier may be used, and as the silicone emulsifier, a copolyol-based nonionic surfactant in which some alkyl groups are substituted on the silicone chain or the silicone chain may be used. As antibacterial agents, triclosan or erythromycin, salicylic acid, organic salts of metal zinc, sulfur, natural extracts, and the like can be used. As anti-inflammatory agents, licorice acid or its pharmaceutically acceptable salts, derivatives thereof, natural extracts and the like can be used.

In addition, in the present invention, by increasing the ratio of the water phase, which is the inner phase of the water in silicone (W / S) formulation, the usability of the product can be imparted with a light feeling like the O / W (Oil in Water) formulation.

In this W / S formulation, in order to prepare a stable emulsion having a high water ratio, a larger amount of surfactant is required than in a conventional emulsion preparation, and the particle shape of the inner phase increases as the amount of surfactant used increases. It is more like an oval or sausage than a complete sphere.

Stability in this type of system is closely related to the following:

1) Type of oil used: It is associated with the formation of a hard liquid crystal phase of the oil, and affects the usability depending on the polarity of the oil used.

2) Addition of salts to the water phase: prevents instability due to aggregation and increases temperature stability, in particular low temperature stability.

Therefore, the present invention improves the usability by selecting a specific oil, and adjusts the oil film strength appropriately while confirming the change of the internal phase content and the emulsion stability according to the structure peculiar to the silicone-based surfactant, thereby providing Stable emulsions were prepared with ratios of up to about 90%.

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

In the creamy silicone according to the present invention, the water (W / S) type face wash cosmetics use liquid silicone oil as a face wash having a main face wash function of skin contaminants, and as such liquid silicone oil, methyl polysiloxane, methylphenyl polysiloxane, methyl cyclone Polysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetradecamethylhexasiloxane, octamethyltrisiloxane, and the like, and these may be used alone or in combination of two or more thereof to provide a surface of the makeup powder. Depending on the treatment state, it can be applied to facilitate makeup removal.

As silicone type emulsifier, polyoxyethylene methyl polysiloxane copolymer, poly (oxyethyleneoxypropylene) methyl polysiloxane copolymer which added polyoxyethylene, polyoxypropylene, polyoxyethylene polyoxypropylene, etc. to liquid silicone, and provided surfactant activity, Dimethicone copolyols such as polyoxypropylene methylpolysiloxane copolymers and their fatty alcohols or derivatives such as methylcetyloxysiloxane copolymers and methyl stearoxysiloxane copolymers in which fatty acids or alkyl chains are partially substituted with alkyl groups can be used. have. These may be blended so that a stable emulsion may be formed alone or in combination of two or more kinds.

As the nonionic surfactant as a cleaning aid, nonionic surfactants such as PEG-7 glyceryl cocoate added with ethylene oxide or propylene oxide, or polysorbate 20 in which a part of the alkyl group is substituted with sorbitol, glycerin, etc. These can be mentioned, These can be mix | blended in an appropriate amount according to the phase or cleaning power of an emulsion individually or in combination of 2 or more.

Also optionally, antimicrobial and / or anti-inflammatory agents are added, or silicone-based polymers or organically modified inorganic thickeners (e.g., 0-30 wt. %, 0.5-30% by weight), silicone wax (e.g. 0-15% by weight, 0.5-15% by weight), lipophilic silica (e.g. 0-10% by weight, 0.5-10% by weight) %) May be added, and a conventional preservative and / or antioxidant, a stabilizer such as NaCl or MgSO ₄ , magnesium myristate, magnesium stearate, moisturizing agent, additives and the like may be appropriately blended. The balance is purified water.

In the present invention, limiting the content of the liquid silicone to 5 to 40% by weight is not only less than 5% by weight of the cream of the W / S-type is difficult to form, but also difficult to function in the dirt removal force, 40% by weight or more substantially It is not preferable because there is a large amount of residual oil and there is a risk of causing uncomfortable flow during use.

The co-emulsifier or emulsifier should be at least 0.1% by weight of active ingredient to make emulsion, and if it is more than 20% by weight, skin irritation may be caused by surfactant, and the physical properties of emulsifier are too sticky and have gel state. This is not preferable because it becomes too much and not fresh in terms of usability.                     

The nonionic surfactant, which is a cleaning aid, may not feel a difference in cleaning function at 0.1 wt% or less, and is not preferable because at 10 wt% or more, a stable W / S type emulsion cannot be formed.

The antimicrobial agent is not particularly limited as long as it does not deactivate or denature by reacting with other components of the face-wash cosmetic according to the present invention and has activity on the facial flora spectrum, and the concentration of the antimicrobial agent is also dependent on the titer of the antimicrobial agent. It is preferable to limit the concentration, since it is usually 0.01% by weight or more and 1% by weight or more, since it may cause skin irritation or other side effects.

As an anti-inflammatory agent, as in the case of antimicrobial agents, high activity is enough to use about 0.01% by weight, but considering the degree of delivery of the drug through penetration into the skin is expected to be able to use up to 3% by weight.

It is necessary to adjust the viscosity according to the volume ratio of the discontinuous phase in the W / S (Water in Silicone) cream, and to increase the viscosity, organic modified clay or fatty acids (lauric acid, myristic acid, stearic acid, palmitic acid, etc.) such as organic bentonite It is also possible to adjust the viscosity so as to have convenient usability by blending a divalent metal (magnesium, zinc, calcium, and the like) salts or the like alone or in an appropriate combination of two or more thereof.

Depending on the volume ratio of the discontinuous phase, if the cream phase is too fast or too slow, the removal of makeup contamination may be impaired. In such cases, silicone wax or lipophilic silica may be appropriately used to control the speed of the phase.

It is necessary to understand that the above-described viscosity control or the rate control of the phase is obvious to those skilled in the art that can be appropriately selected as needed.

The preparation of an emulsion of water in silicone (W / S) type is prepared by adding a hydrophilic phase to a lipophilic phase as a general method.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, which are not intended to limit the present invention but to illustrate the present invention.

Each component and the composition thereof used in Examples and Comparative Examples are shown in Tables 1 to 3 below.

W / S type face wash composition according to Examples 1 to 3 of the present invention : division Ingredient Name weight% Example 1 Example 2 Example 3 Paid Dimethicone 10 30 4 Cyclomethicone 10 10 4 Triclosan (Antibacterial) 0.2 0.2 0.2 Stearyl Glycylatinate (Antibacterial) 0.2 0.2 0.2 Emulsifiers and Supplements Dimethicone Copolyol 10 10 One PEG-7 glyceryl cocoate 2 2 - Awards Purified water 62.1 42.1 85.1 1,3-butylene glycol 5 5 5 Magnesium sulfate 0.5 0.5 0.5

W / O type face wash composition as Comparative Examples 1 and 2 : division Ingredient Name weight% Comparative Example 1 Comparative Example 2 Paid Mineral oil 10 30 Isopropyl Palmitate 10 10 Triclosan (Antibacterial) 0.2 0.2 Stearyl Glycylatinate (Antibacterial) 0.2 0.2 Emulsifiers and Supplements Cetyldimethicone copolyol 10 10 PEG-7 Glyceryl Coconate 2 2 Awards Purified water 62.1 42.1 1,3-butylene glycol 5 5 Magnesium sulfate 0.5 0.5

O / W type face wash composition as Comparative Examples 3 and 4 : division Ingredient Name weight% Comparative Example 3 Comparative Example 4 Paid Mineral oil 10 30 Isopropyl Palmitate 10 10 Triclosan (Antibacterial) 0.2 0.2 Stearyl Glycylatinate (Antibacterial) 0.2 0.2 Emulsifiers and Supplements Laureth-20 5 5 Steareth-3 5 5 2 PEG-7 glyceryl cocoate 2 Awards Purified water 62.6 42.6 1,3-butylene glycol 5 5

[Examples 1-3]

10 minutes at 2500 rpm using an impeller stirrer while slowly adding water, 1,3-butylene glycol, and magnesium sulfate to the oil phase mixed with dimethicone, dimethicone copolyol, and PEG-7 glyceryl cocoate. Emulsification yielded 100 g of face wash cosmetics of W / S cream type.

[Comparative Examples 1 and 2]

Using an impeller stirrer while slowly adding water, 1,3-butylene glycol, and magnesium sulfate to the oil phase mixed with mineral oil, isopropyl palmitate, cetyldimethicone copolyol, and PEG-7 glyceryl cocoate The emulsion was emulsified at 2500 rpm for 10 minutes to obtain 100 g of a face wash cosmetic having a W / O cream type.

[Comparative Examples 3 and 4]

Impeller type stirrer while slowly adding an oil phase containing mineral oil and isopropyl palmitate, steareth-3, laureth-20 and PEG-7 glyceryl cocoate to an aqueous phase containing water and 1,3-butylene glycol Emulsification was carried out at 2500 rpm for 10 minutes to give 100 g of an O / W cream-type cleansing agent.

[Test Example 1]

Examples 1 and 2, and Comparative Examples 1 to 4 to examine the makeup removal power of the facial cleanser prepared according to the following test.

Make-up removal test is applied to the test lipstick prepared in the component ratio shown in Table 4 below to the inside of the lower arm of the left arm in the area of 2Cm × 3Cm and washing face cosmetics made in Examples 1 and 2 and Comparative Examples 1-4 After repeated cleansing, the removal ability of the makeup was evaluated by comparing the color strength before and after cleaning, which measured skin color strength before cleaning and skin color strength after cleaning.                     

Color intensity was measured using a color difference meter CR-200 (CHROMA METER CR-200).

Makeup removal ability of the face wash was compared by the removal index according to Equation 1 below.

Removal index (%) = {[Color intensity after applying lipstick]-[(Color intensity after cleaning)-(Color intensity of bare skin)]} / [Color intensity after applying lipstick] × 100

The makeup removal power comparison test results of Examples 1 and 2 and Comparative Examples 1 to 4 are shown in Table 5 below.

Composition and composition of the test lipstick : Ingredient Name Composition (% by weight) Red No. 218 Aluminum Lake 2.0 Red 202 Calcium Lake 2.0 Titanium oxide 2.0 Mica titanium 5.0 Mineral oil 69.0 Microcrystalline Wax 20.0 system 100

Comparison of Makeup Removal Force of Examples 1 and 2 with Comparative Examples 1-4 : Color intensity of bare skin Color intensity after applying lipstick Color intensity after clean Removal index (%) Example 1 4.63 45.10 6.99 94.8 Example 2 4.64 45.12 7.00 94.8 Comparative Example 1 5.62 45.25 25.08 57.0 Comparative Example 2 5.85 45.09 8.97 93.1 Comparative Example 3 5.07 45.08 32.7 38.7 Comparative Example 4 4.98 45.21 8.04 93.2

As shown in the results of Table 5, Examples 1 and 2 was found to be excellent in the removal ability of the makeup compared to Comparative Examples 1-4.

[Test Example 2]

In order to find out the rapidity of makeup dissolving power according to the type of face wash, Comparative Example 2 and W / O (Water in Oil) type of W / S (Water in Silicone) type face wash and O / W ( Oil in Water (Comparative Example 4) was applied to 10 test subjects, and the degree of dissolution of the makeup was sensoryly evaluated and displayed on a 5-point evaluation scale.

The results are shown in Table 6 below.

Comparison of the makeup dissolving power of Example 2 and Comparative Example 2 and Comparative Example 4 : Subject number Example 2 Comparative Example 2 Comparative Example 4 One 5 3 3 2 5 4 3 3 4 3 3 4 5 3 2 5 4 4 3 6 4 4 4 7 5 3 3 8 5 5 3 9 5 3 3 10 4 3 2 Average 4.6 3.5 2.9

Reference: 5-point rating scale

1: not very soluble 2: not very soluble 3: moderate

4: soluble very quickly 5: soluble very quickly

As shown in the results of Table 6, the W / S (Water in Silicone) type of face wash of Example 2 is W / O (Water in Oil) and O / W (Oil in Water) of Comparative Examples 2 and 4, respectively It was found that the solvent dissolving ability is very fast and excellent compared to the face wash of the) type.

[Test Example 3]

In order to determine the degree of anti-inflammatory effect exerted by the type of face washes (W / S, W / O, O / W), the face washes of Example 2 and Comparative Examples 2 and 4 were divided into three groups of five subjects. After limiting the daily use to 8g, apply it to the face for about 1 week (6 days) for each group, and then, on the 6th day, to determine the erythema on the face, the incidence of irritation caused by antibacterial triclosan is normal. Visual evaluation was made in comparison with the skin, and the results are shown in Table 7 below.

Comparison of Anti-inflammatory Effects of Anti-Inflammatory Stearyl Glycylatinates According to Face Wash Types : division Group A (Use W / S Type) Group B (Use W / O Type) Group C (O / W type used) Subject number Stimulus rating Stimulus score Subject number Stimulus rating Stimulus score Subject number Stimulus rating Stimulus score Anti-inflammatory effect One - 0 6 + One 11 ++ 2 2 - 0 7 - 0 12 + One 3 - 0 8 + One 13 ++ 2 4 + One 9 + One 14 ++ 2 5 - 0 10 + One 15 ++ 2 Stimulus score average 0.2 0.8 1.8

See: Stimulus Score Conversion in Stimulus Rating                     

-: No stimulation → 0 points, +: light stimulation → 1 point, ++: medium stimulation → 2 points, +++: strong stimulation → 3 points

From the results of Table 7, the expression of facial skin irritation due to repeated contact of triclosan, which provides the cause of irritation, is effective even if the same amount of anti-inflammatory stearyl glycyrateate is combined, depending on the type of face wash. It was found that there was a difference in the degree of performance, and it was proved that the W / S type face wash was more effective than the W / O or O / W type.

This result is believed to be the result of liquid silicone, a continuous phase component of W / S type face wash, having excellent solubility in anti-inflammatory agents.

[Test Example 4]

On the 2nd, 4th and 6th day after using the group of test subjects divided in the same manner as in Test Example 3 to confirm the antimicrobial effect according to the type of face wash (W / S, W / O, O / W) After 5 hours of use of the face wash, each of the subject's three faces was contacted with a Φ8 mm paper disc (ADVANTEC-Toyo Roshi Kaisha, Ltd.) to collect the bacteria from the skin, and the total number of bacteria on the skin was examined. And the results are shown in Table 8 and FIG. 1.

Put the paper disk into the diluent and shake it for 10 minutes, put 1 ml of the above-mentioned shake solution and sterile tryptic soy agar medium into the petri dish, close the lid and let it cool down to harden the medium, and then reverse the petri dish. After incubation for 48 hours in an incubator maintained at 35 ± 1 ° C., petri dishes were taken out and the number of colonies formed on the medium was measured using a colony counter.

Comparison of Antimicrobial Effects of Antibacterial Triclosan by Face Wash Types : division Subject number Number of colonies after 48 hours of incubation Day 2 Day 4 6th day A type                                                  user One 0 0 0 2 One 0 0 3 0 0 One 4 One One 0 5 2 One One Average number 0.8 0.4 0.4 B type                                                  user 6 10 7 7 7 8 6 8 8 9 8 8 9 7 9 9 10 8 8 8 Average number 8.4 7.6 8 C type                                                  user 11 45 35 44 12 35 45 48 13 36 44 47 14 48 53 39 15 50 38 39 Average number 42.8 43 43.4

[Test Example 5]

The long-term storage stability for Example 3, in which the ratio of the aqueous phase is 90%, was evaluated for 6 months in a thermostat (-5 ° C, 37 ° C, 43 ° C, 50 ° C, cycles) and room temperature, and the results are shown in Table 9 below. Indicates.

division -5 ℃ 37 ℃ 43 ℃ 50 ℃ cycle Judgment stability Very stable Very stable stability stability

As described above, the W / S type facial cleansing agent according to the present invention does not contain general mineral oil or ester oil, but quickly dissolves and removes makeup contaminants using only silicone oil, and includes antibacterial and anti-inflammatory agents. It is particularly suitable for cleansing acne and oily skin because it inhibits the growth of skin flora and alleviates the causes of inflammation.

Claims (4)

5 to 40% by weight of silicone oil as a face contaminant removal component, 0.1 to 20% by weight of silicone oil emulsifier, 0.1 to 10% by weight of nonionic surfactant, and water in silicone (W / S) ) Face wash cosmetics. The water type facial cleansing agent according to claim 1, further comprising 0.001 to 4% by weight of an antibacterial agent and / or an anti-inflammatory agent. delete The method of claim 1 or 2, wherein the silicone oil is selected from the group consisting of methyl polysiloxane, methylphenyl polysiloxane, methylcyclopolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetradecamethylhexahexasiloxane and At least one liquid silicone oil selected from the group consisting of octamethyltrisiloxane; The type of face wash in silicone wherein the silicone oil emulsifier is at least one copolymer selected from the group consisting of polyoxyethylene methylpolysiloxane copolymers, poly (oxyethyleneoxypropylene) methyl polysiloxane copolymers and polyoxypropylene methylpolysiloxane copolymers For cosmetics.

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