JP2009013102A - Aerosol composition and aerosol product containing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aerosol composition performing skin care even on wearing stockings, and an aerosol product containing the same. <P>SOLUTION: This aerosol composition is provided by containing a skin care agent stock solution and propellant, and the skin care agent stock solution contains water, a surfactant and a humectant, and is used for the application to the skin covered with a stocking. Also, the aerosol product is prepared by filling the aerosol composition in an aerosol container and used for the application to the skin covered with a stocking. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to aerosol compositions and aerosol products containing the same.

  Moisture retained in the skin stratum corneum plays a major role in the moisture and smoothness of the skin. The moisture retention of the stratum corneum is usually controlled by natural moisturizing factor (NMF) and sebum membrane. However, the water retention function of the stratum corneum is easily degraded by aging or external stimuli. In particular, in winter when the air is dry, a so-called dry skin state such as a bulky skin occurs, which may cause discomfort. It is not preferable to leave such a state from the viewpoint of skin care for beauty.

Conventionally, various types of skin care agents such as cosmetics and lotions for skin care such as skin moisturization have been developed in various forms (for example, Patent Documents 1 and 2). Similarly, many textile products for skin care are being developed. For example, a skin care fiber product (patent document 3) to which serine is attached as an amino acid composition and a skin care fiber product (patent document 4) to which arginine is attached have been developed.
JP2007-514030A JP 2003-342116 A Patent No. 2998022 Japanese Patent No. 3858143

  Conventional skin care agents exhibit a moisturizing effect by directly applying the skin care agent onto the skin. Therefore, it cannot be used unless it is undressed, and cannot be easily used while wearing stockings, especially at work or on the go. In addition, since conventional skin care textile products require a long period of days to weeks to realize skin care effects such as moisturizing even when worn, skin dryness especially when wearing stockings, especially at work or on the go When you are worried about, there is no immediate effect. In particular, dry skin is likely to occur in winter, and the need for skin care such as moisturizing while wearing stockings is high.

  Therefore, the present invention provides an aerosol composition capable of performing skin care while wearing stockings, and an aerosol product including the same.

  The aerosol composition of the present invention contains a skin care agent stock solution and a propellant, and the skin care agent stock solution contains water, a surfactant, and a moisturizing agent, and is applied to skin covered with stockings. The aerosol composition used.

  The aerosol product of the present invention is an aerosol product in which the aerosol composition of the present invention is filled in an aerosol container and used for application to the skin covered with stockings.

  For example, the present invention produces an effect that skin care can be easily performed without impairing the appearance even when used while wearing stockings.

  There are various problems in skin care of skin covered with stockings when wearing stockings. For example, when using a conventional skin care agent, undressing is necessary, and it is not easy at work or on the go. In addition, for example, conventional skin care fiber products do not have immediate effect because several weeks are required until the effect is exhibited. These problems are even more serious in winter when dry skin is likely to occur.

  The present invention is a skin care agent containing water, a surfactant, and a moisturizing agent, and can easily penetrate (penetrate) the stockings and reach the skin. Based on the finding that moisture (moisturizing effect) is maintained for a longer period of time than using it directly on the skin.

  In addition, if the skin care agent is in the form of mist (mist) or mousse (foam), the present invention can be applied at the time of application without damaging the appearance such as appearance or appearance even if the skin care agent is applied from above the stockings. Based on the knowledge that cooling and stickiness can be reduced.

  Furthermore, the present invention is based on the knowledge that when a skin care agent is used from above stockings, it is possible to prevent static electricity or remove static electricity simultaneously with skin care.

  The aerosol composition of the present invention contains a skin care agent stock solution and a propellant, and the skin care agent stock solution contains water, a surfactant, and a moisturizing agent, and is used for application to the skin covered with stockings. It is.

  First, each component of the skin care agent stock solution will be described. In the present invention, the skin care agent stock solution is a skin care agent contained in the aerosol composition of the present invention, and includes water, a surfactant, and a humectant. The skin care agent stock solution may further contain other skin care ingredients.

(water)
Water in the skin care agent stock solution is an important component for supplying water between the fibers of the stocking fabric and the stratum corneum of the skin. The water used in the present invention is not particularly limited, and examples thereof include purified water, ion-exchanged water, distilled water, and other water usually used in the field. The content of water in the skin care agent stock solution is, for example, 30% by weight or more, preferably 50% by weight or more, from the viewpoint of the moisturizing effect and its immediate effect.

(Surfactant)
The surfactant in the skin care agent stock solution is not particularly limited as long as it has low skin irritation and high safety, but is preferably one that can be used as an aerosol composition. Examples thereof include nonionic surfactants, anionic (anionic) surfactants, cationic (cationic) surfactants, and amphoteric surfactants. Examples of the nonionic surfactant include propylene glycol fatty acid ester, glycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyglycerin fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, Oxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene sterol, polyoxyethylene hydrogenated sterol, and polyethylene glycol fatty acid ester, polyoxyethylene alkyl ether (such as polyoxyethylene stearyl ether), polyoxypropylene alkyl ether, Polyoxyethylene lanolin, polyoxyethylene lanolin alcohol, polyoxyethylene beeswax Conductor, polyoxyethylene alkylamine, polyoxyethylene fatty acid amides, fatty acid alkanolamides, and polyoxyethylene polyoxypropylene alkyl ether. Examples of the anionic surfactant include polyoxyethylene alkyl ether phosphate, polyoxyethylene alkyl ether phosphate, polyoxyethylene alkyl ether sulfate (Na, K, ammonium salt, etc.), C _{12 to} C ₂₀ Alkyl ether carboxylates, sulfonates of C ₁₂ -C ₂₀ higher fatty acid esters (eg, dioctyl sodium sulfosuccinate, sodium lauryl sulfoacetate, etc.), C ₁₂ -C ₂₀ alkyl phosphates, C ₁₂ -C ₂₀ alkyls Examples thereof include sulfates, acylamino acid salts, and higher alcohol sulfates of C _{12 to} C ₂₀ . Examples of the cationic surfactant include alkylammonium salts such as benzalkonium chloride and lauryltrimethylammonium chloride. Examples of amphoteric surfactants include amide betaine-type amphoteric surfactants such as coconut oil fatty acid amidopropyl betaine, betaine acetate-type amphoteric surfactants such as lauryldimethylaminoacetic acid betaine, and N-coconut oil fatty acid acyl-N-carboxyl. Examples include imidazoline type amphoteric surfactants such as methyl-N-hydroxyethylethylenediamine sodium. The surfactant used in the present invention may be used alone or in combination of two or more. The content of the surfactant in the skin care agent stock solution is, for example, 0.01 to 10% by weight, preferably 0.5 to 2% by weight, from the viewpoint of mixing the skin care agent components and the effect of penetration of the skin care agent into the fiber. %.

  The surfactant in the skin care agent stock solution preferably has a function of allowing water or a moisturizer to penetrate into the stockings. Stockings are mainly manufactured by knitting synthetic fibers. In general, synthetic fibers have poor wettability and are repelled on the surface even when contacted with water, preventing moisture from reaching between the fibers of the stocking, between the fibers of the stocking and the skin, and to the stratum corneum of the skin. The surfactant preferably acts to lower the surface tension of the skin care agent to improve the wettability of the fibers of the stocking, and the moisture between the fibers of the stocking, between the fibers of the stocking and between the skin and the stratum corneum of the skin. Etc. to be replenished.

  When the sprayed aerosol composition (hereinafter also referred to as aerosol spray) is made mist (mist), the surfactant preferably has an HLB (Hydrophyllic-Lipophilic Balance) value of less than 8. This is because the skin care agent stock solution becomes water-in-oil (W / O) emulsification, can be sprayed in the form of a mist, and is effective for spraying over a wide range. Moreover, when making aerosol injection thing into a mousse shape (foam shape), as a surfactant, a thing with an HLB value of 8 or more is preferable. This is because the skin care agent stock solution becomes oil-in-water (O / W) emulsification, is jetted in the form of foam, can be used by hand, and scattering can be suppressed.

(Humectant)
As the humectant in the skin care agent stock solution, a conventionally known humectant with low skin irritation and high safety can be used. The skin care agent stock solution in the present invention preferably contains at least an oil agent as a humectant. The humectant may contain a polyhydric alcohol in addition to the oil agent. This is because these combinations have a track record in cosmetics and lotions in terms of moisture retention performance and safety. Oil is often used as a component that suppresses the transpiration of moisture, and polyhydric alcohol is used in many cosmetics and the like as a component that permeates the stratum corneum and retains moisture, and its safety has been demonstrated.

  Oils contained in the skin care agent stock solution can be used to prevent the moisture of the skin from evaporating and have a moisturizing effect. Among them, those having an emollient effect for smoothing the skin are preferable. Examples of oils include liquid fats such as avocado oil, camellia oil, evening primrose oil, turtle oil, macadamia nut oil; solid fats such as cocoa butter, palm oil, horse fat, hardened palm oil, palm oil, and beef tallow; beeswax, cotton Waxes such as wax, whale wax, lanolin; hydrocarbon oils such as liquid paraffin, squalene, pristane, paraffin, petrolatum, microcrystalline wax; higher fatty acids such as lauric acid and myristic acid (for example, about C8 to C24); synthetic ester Oil: linear polysiloxanes (dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, etc.), cyclic polysiloxanes (decamethylpolysiloxane, etc.), silicone resins that form a three-dimensional network structure, silicone rubber, etc. Silicone, polyoxyethylene · Methylpolysiloxane copolymer, poly and polyether-modified silicones such as (oxyethylene-oxypropylene) methylpolysiloxane copolymers. Among these, liquid oils such as avocado oil, camellia oil, evening primrose oil, macadamia nut oil and olive oil, hydrocarbon oils such as liquid paraffin, squalene, paraffin and petrolatum, and polyether-modified silicone are preferred at room temperature. The oil agent used for this invention may be used independently, and may use 2 or more types together.

  The content of the oil agent in the skin care agent stock solution is, for example, 0.1% by weight or more, preferably 0.5% by weight or more from the viewpoint of the moisturizing effect, and from the viewpoint of appearance and stickiness, for example, 50% by weight or less, preferably 30% by weight or less, and more preferably 20% by weight or less. Therefore, the content of the oil agent in the skin care agent stock solution is, for example, 0.1 to 50% by weight, preferably 0.1 to 30% by weight, and more preferably 0.1 to 20% by weight. In addition, when the aerosol spray is in the form of a mist, the content of the oil agent in the skin care agent stock solution is, for example, 20% by weight or less, preferably 15% by weight or less, from the viewpoint of suppression of cooling feeling (coolness), 10 wt% or less is more preferable. Accordingly, when the aerosol spray is in the form of a mist, the content of the oil agent in the skin care agent stock solution is, for example, 0.1 to 20% by weight, preferably 0.1 to 15% by weight, and preferably 0.1 to 10% by weight. Is more preferable.

  The polyhydric alcohol is not particularly limited as long as it has low skin irritation and high safety, and glycerin, ethylene glycol, propylene glycol, 1,3 butylene glycol and the like can be widely used. The polyhydric alcohol used for this invention may be used independently, and may use 2 or more types together. The content of the polyhydric alcohol in the skin care agent stock solution is, for example, 0.1 to 20% by weight, preferably 2 to 5% by weight, from the viewpoint of moisture retention and reduction in stickiness.

  Components of moisturizers other than oils and polyhydric alcohols used in skin care agent stock solutions include amino acid, pyrrolidone carboxylic acid, lactic acid, which is a component of natural moisturizing factor (NMF), hyaluronic acid, which is deeply involved in moisturizing the dermis layer In mucopolysaccharides such as chondroitin sulfate, components extracted from plants such as aloe, protein hydrolysates such as soluble collagen, cholastin, and keratin, placenta extract extracted from bovine placenta extract, and gastric mucosa and salivary glands of mammals Examples include mucins, glycoproteins produced and secreted, chitin, chitosan, bifidobacteria metabolites, and yeast extracts mainly made from crab and shrimp shells. The total content of the humectant in the skin care agent stock solution is preferably 0.1 wt% to 50 wt%, more preferably 0.5 wt% to 20 wt%.

(Other skin care ingredients)
In the skin care agent stock solution of the present invention, one or more other skin care components other than the components described above can be blended. For example, plant extracts such as peach leaf extract, citron extract, hamamelis extract, asunalo extract, aloe extract, abalone extract, ceramides such as natural ceramide and pseudoceramide, collagen, hyaluronate, amino acid, lactic acid, citric acid, malic acid The components for skin care such as the above can be blended as long as the effects of the present invention are not impaired. Also, lower alcohols have the effect of lowering the surface tension, similar to surfactants, and lower alcohols can also be used as penetrants. The type of the lower alcohol is not particularly limited, but a lower alcohol having 1 to 3 carbon atoms is preferable, and ethanol and isopropanol which are frequently used in cosmetics are more preferable. The content of the lower alcohol is not particularly limited, but is, for example, 70% by weight or less, preferably 50% by weight or less, based on the skin care agent stock solution.

  One embodiment of the skin care agent stock solution includes one containing 30 to 99.89% by weight of water, 0.01 to 10% by weight of a surfactant, and 0.1 to 50% by weight of a humectant. Here, when the humectant contains an oil agent and a polyhydric alcohol, the content in the skin care agent stock solution is, for example, 0.1 to 30% by weight and 0.1 to 20% by weight, respectively.

  Although the manufacturing method of the skin care agent stock solution in this invention is not specifically limited, For example, after adding and melt | dissolving surfactant in water, it can prepare by adding a moisturizer.

(Propellant)
As a propellant in the aerosol composition, a known aerosol propellant can be used. For example, carbon dioxide, nitrogen, nitrous oxide, liquefied petroleum gas (LPG), dimethyl ether (DME), chlorofluorocarbon, compressed air, or the like can be used. Depending on the proportion (weight ratio) of the propellant in the aerosol composition, the aerosol propellant can be adjusted to a mist or foam. The blending ratio of the skin care agent stock solution and the propellant when the aerosol spray is atomized is preferably 30:70 to 80:20 from the viewpoints of coating amount, appearance and cooling feeling (coolness), and the like. Preferably it is 40: 60-60: 40. Moreover, when making an aerosol propellant foamy, 40 weight% or less is preferable from the point of suppression of a cooling feeling (coolness) with respect to an aerosol composition, and 4 weight% or more is preferable from the point of foaming. preferable. Therefore, when the aerosol spray is foamed, the ratio of the skin care agent stock solution to the propellant is preferably, for example, 60:40 to 96: 4.

(Optional component)
In addition to the above skin care agent stock solution and propellant, the aerosol composition in the present invention includes other components used in the composition of cosmetics or external preparations for skin, for example, antibacterial agents, ultraviolet absorbers, whitening agents, analgesics, and tanning agents. , Preservatives, pH adjusters and the like.

  As one embodiment of the aerosol composition in the present invention, a skin care agent stock solution containing 30 to 99.89% by weight of water, 0.01 to 10% by weight of a surfactant, and 0.1 to 50% by weight of a humectant. And the propellant, the blending ratio (weight ratio) of the skin care agent stock solution and the propellant is 30:70 to 80:20 (when the propellant is in a mist form) or 60:40 to 96: 4 (the propellant is In the case of foam).

(Aerosol products)
The aerosol product of the present invention is one in which the aerosol composition of the present invention is filled in an aerosol container, and is used for skin care such as moisturizing the skin covered with stockings while wearing the stockings. The aerosol product of the present invention includes, for example, forms such as a moisturizing spray, a skin humidifying spray, and a skin care spray. Furthermore, in the present invention, as described later, since the stockings include socks such as pantyhose, tights, garter stockings, over knees, high socks, socks, etc., the aerosol product of the present invention is, for example, a moisturizing spray for stockings, for socks It may include forms such as a moisturizing spray.

  The aerosol container is not particularly limited, and examples thereof include metal, glass, and synthetic resin cylindrical containers that are generally used as aerosol pressure-resistant containers, and preferably metal cans such as aluminum cans and tin cans.

  As described above, the aerosol product in the present invention can be adjusted in the form of a mist or foam according to the blending ratio of the skin care agent stock solution and the propellant in the aerosol composition.

  The method for producing the aerosol product of the present invention is not particularly limited, and an aerosol container may be filled with a skin care agent stock solution and a propellant. The method for filling the aerosol container is not particularly limited as long as it is a method commonly used in the art. For example, after filling the aerosol container with the skin care agent stock solution, the aerosol valve is clinch and the propellant is filled from the valve tip. The method etc. are mentioned.

  The aerosol product of the present invention can be used for skin care such as moisturizing legs and feet covered with stockings while wearing stockings. The method of using the aerosol product of the present invention for skin care such as moisturizing while wearing stockings is as follows. When the aerosol spray is a mist-like aerosol product, the skin care agent can be sprayed directly onto the skin from the worn stockings. Since a fine mist-like skin care agent is sprayed over a wide range, an appropriate amount can be uniformly attached. Moreover, when it is foamy, it can be similarly sprayed on the stocking and spread by hand, or it can be spread on the skin once worn by the hand. Also in this case, the skin care agent can be thinly applied by the action of the foam, and an appropriate amount can be adhered uniformly. Since the aerosol product of the present invention can uniformly deposit an appropriate amount of the skin care agent in this way, it does not harm the appearance due to unevenness, and can also suppress discomfort such as coldness and stickiness.

  The stockings in the present invention refer to socks including pantyhose, tights, garter stockings, over knees, high socks, socks and the like, and may include pants that adhere to leg portions such as spats. The stocking material may be, for example, synthetic fibers such as nylon and polyurethane, regenerated fibers, natural fibers, or a mixture thereof. The main part of the fabric covering the legs of the stocking is preferably composed of a single knit from the viewpoint of suppressing coldness and stickiness caused by an increase in moisture (skin care agent) retained as the thickness increases. Moreover, the thickness of the thread | yarn (including a filament yarn and a span yarn) of stocking cloth is 5-210 denier (D), for example, Preferably it is 10-140D, More preferably, it is 10-70D. Specifically, for example, as pantyhose, for example, a SCY Zocchi type using a single covered yarn (SCY) covering a 10D nylon thread on a 15D polyurethane thread, a double covered cover covering a 7D nylon thread on a 30D polyurethane thread DCY Zokki type using yarn (DCY), SCY knitting type with 20D polyurethane yarn covered with 12D nylon yarn and SCY knitting type with 12D nylon yarn knitting, DCY with 20D polyurethane yarn covered with 10D nylon yarn Commercially available stockings such as a DCY knitting type in which 20D nylon yarn is knitted, and a wooly type in which only a 20D wooly nylon yarn is used without using a polyurethane yarn can be mentioned.

  Further, the aerosol product of the present invention may be applied to products made of the same fabric material as described above, for example, clothing such as inner and underwear.

  Examples will be described below. The present invention is not limited to these examples.

  Each component of the following Table 1 was mix | blended so that it might become a composition of the same table, and Examples 1-5 and Comparative Examples 1-7 were produced. The skin care agent stock solutions shown in Table 1 below were prepared by adding a surfactant to purified water and dissolving it, and then adding a moisturizing agent. Examples 1-5 and Comparative Examples 1-5 are aerosol sprays, and after filling the skin care agent stock solution prepared as described above into an aerosol container, the aerosol valve was clinched and filled with propellant from the valve tip. Produced. In addition, the comparative example 6 is a pump type spray, and it prepared by putting the skin care agent stock solution prepared as mentioned above into a pump (Z-35-S01: Mitani valve make, 1 push 45 mg discharge). Comparative Example 7 is a creamy liquid composition comprising a skin care agent stock solution, and was prepared according to the method for preparing the skin care agent stock solution. The unit of the content of each component in the skin care agent stock solution shown in Table 1 below is wt% with respect to the skin care agent stock solution, and for each component of the propellant, it is wt% with respect to the propellant. The blending ratio of the skin care agent stock solution and the propellant is a weight ratio. Table 2 below shows details of the surfactants and oil agents in Table 1. For each component, the following were used. Decaglyceryl pentaisostearate (manufactured by Nikko Chemicals, trade name: Nikkor Decaglyn 5-IS), POE (20) cetyl ether (manufactured by Nikko Chemicals, trade name: Nikkor BC-20TX), N-coconut oil fatty acid acyl-L-glutamic acid Sodium triethanolamine solution (Asahi Kasei Chemicals, trade name: Amino Surfact ACMT-L), Squalane (Maruha, trade name: Squalane), Methylpolysiloxane (Shin-Etsu Chemical Co., trade name: KF-96 350CS), Isopropyl myristate (made by Kao, trade name: Exepal IPM), polyoxyethylene / methylpolysiloxane copolymer (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KF-6011), 1,3 butylene glycol (manufactured by Kyowa Hakko Chemical, product) Name: 1,3 Butyling Call), ethanol (Japan Alcohol Trading Co., Ltd., trade name: 99 degrees synthesized unmodified alcohol), 1% hyaluronic acid aqueous solution of Na (Kewpie Co., Ltd., trade name: Hyaluronsan HA-LQ1).

  The stockings used for the following performance tests and sensory tests are of type Zokki, yarn structure SCY single covered yarn, urethane yarn thickness 20 denier, covering yarn (nylon) thickness 15 denier, loop length 1.9mm The thickness is 0.21 mm, the wale of the stitch density is 18 / cm, and the course is 59 / cm.

(Measurement of coating amount and coating time)
The aerosol sprays of Examples 1, 2, and 4, the aerosol spray of Comparative Example 5, the pump-type spray of Comparative Example 6, and the creamy liquid composition of Comparative Example 7 were used as test samples, and the test samples were uniformly distributed over the stockings. The amount and time of the skin care agent required for application to the skin were measured by the following measurement method to evaluate the ease of spreading (ease of thin and uniform application). The results are shown in Table 3 below.
Measurement Method A measurement material was prepared by bringing the fabric back of the rectangular stocking (the inside of the stocking) into close contact with the surface of a plate-shaped artificial skin (Bulux, Bioskin cheek 20s). The application amount and application time required to uniformly spread the skin care agent on the entire surface of the 8 cm × 15 cm fabric were measured. In addition, 1% by weight of Blue No. 1 1% aqueous solution (Daiwa Kasei Blue No. 1) is added to each test sample in place of 1% by weight of purified water so that the entire surface of the dough has no color unevenness visually. It was judged that the paint was extended. In consideration of the assumed method of application, the aerosol sprays (mist form) of Examples 1 and 4 and the pump-type spray of Comparative Example 6 were directly sprayed from a distance of 20 cm from the dough. The aerosol spray (foam), the aerosol spray (foam) of Comparative Example 5 and the cream-like liquid composition of Comparative Example 7 were spread once on the dough for the hand. In addition, the application quantity of a test sample contains a propellant.

  As shown in Table 3 above, the aerosol sprays (mists) of Examples 1, 2, and 4 were able to be spread thinly and uniformly in a short time, but the cream liquid composition of Comparative Example 7 was difficult to spread. The pump type spray of Comparative Example 6 had a short injection time of 1 push, and it took time to spray and apply uniformly. Further, it was found that all of the comparative examples required a large amount for uniform application, and could cause discomfort such as cooling feeling (coldness) and stickiness. Also in the aerosol spray (foam) of Comparative Example 5, the foam density was large and the foaming was small, so the results were almost the same as the pump spray of Comparative Example 6. From the above results, it was shown that the spraying aerosol-containing aerosol spray and the addition of the surfactant had the effect of applying an appropriate amount and uniform skin care agent over the stockings. Indicated. It was also shown that the smaller the bubble density, the easier it can be applied.

(Uniformity and appearance)
Measuring method 13 cm × 25.5 cm, 5 mm thick rectangular foamed polystyrene board was used as a test material by placing a stocking fabric on a frame formed by opening a rectangular hole of 8 cm × 15 cm in the center. FIG. 1 is a photograph of the difference in application uniformity between the aerosol spray (mist form) of Example 4 and the cream-like liquid composition of Comparative Example 7. The upper side of the photo is a comparison of test materials made of white stockings and the lower side of black stockings. In the photograph, the aerosol spray of Example 4 was sprayed in a mist form on the left side of the test material and applied uniformly, and the right side of the test material was the cream of Comparative Example 7 in the same amount as the aerosol spray of Example 4. The liquid composition was spread by hand to make it uniform.
Results As shown in FIG. 1, it was confirmed that when the aerosol spray of Example 4 containing a propellant was sprayed and applied, it was uniform and less discolored, and there was no harmful effect on the appearance. On the other hand, the cream-like liquid composition of Comparative Example 7 containing no propellant (without using an aerosol spray) was difficult to spread evenly, was partially whitish, and could not be used.

(Evaluation of stickiness)
When the skin care agent causes adhesion between the stockings and the skin, a sticky feeling is generated, which causes discomfort to the user. The adhesiveness of the aerosol spray (mist form) of Example 4 and the creamy liquid composition of Comparative Example 7 was evaluated by the peel resistance between stockings and artificial skin measured by the following measurement method. The results are shown in Table 4 below.
Measurement method Test materials were prepared as follows. Artificial skin obtained by fixing artificial skin with a diameter of 50mm and thickness of 5mm on a horizontal plate (Bulux Co., Bioskin cheek 20s) and cutting the stocking fabric into a 150mm x 70mm rectangle. And placed on the upper surface of the artificial skin in such a direction that the back of the stocking comes into contact with the back of the stocking. It should be noted that the horizontal relative positions of the artificial skin and the stockings are such that the centroids of both match when viewed from above. Next, 1 g of the aerosol spray of Example 4 (including propellant) and the creamy liquid composition of Comparative Example 7 were uniformly applied to the above test material, and a load of 1 N was applied from above the stockings for 10 seconds. The stockings were brought into close contact with the artificial skin. The coating method is the same as the measurement of the coating amount and the coating time. Next, using an Instron material testing machine (5569 type), the resistance force generated when one short piece of the stocking was pulled up vertically at a speed of 300 mm / min was measured. In addition, wrinkles were not generated in the stockings during the test by using a gripping tool for a fabric tensile test. The results of Table 4 below are expressed as an average value of resistance in a section of 20 mm from 10 mm before the position where the stocking peels from the artificial skin reaches the center of the circular artificial skin to 10 mm after passing through the center. . A blank measured with the same method and conditions except that no skin care agent is applied.

  As shown in Table 4 above, the aerosol spray of Example 4 is extremely less sticky than the cream liquid composition of Comparative Example 7, and does not give the user a discomfort due to stickiness. I understand. That is, it has been shown that stickiness can be suppressed by spraying with a propellant.

(Measurement of moisturizing effect)
The aerosol sprays of Examples 3 and 5 and the aerosol sprays of Comparative Examples 1 and 2 were sprayed from the place 20 cm away from the thighs of the legs of women in their 20s for 1 second (directly sprayed on the skin and sprayed on the stockings), The electrical conductivity at each time was measured with a skin surface horn layer water content measuring device SKICON-200EX (manufactured by IBS Co., Ltd.). At this time, those sprayed directly onto the skin were measured with an average of three points from above, and those sprayed from above the stockings were turned over to measure the average of three points from above the skin. The results are shown in Table 5 below. In addition, it represents that there is so much water content that electrical conductivity is high.

  As shown in Table 5 above, when the aerosol sprays of Examples 3 and 5 were sprayed from above the stockings, the conductivity was 20 μs or more higher than immediately before spraying even after 120 minutes, but when sprayed directly onto the skin, 120 After minutes, there was almost no difference from the conductivity just before injection. On the other hand, since the aerosol spray of Comparative Example 1 did not contain a moisturizing agent, a moisturizing effect was not obtained even when sprayed directly onto the skin or from the stockings. In addition, the aerosol spray of Comparative Example 2 that did not contain an oil as a moisturizing agent could hardly obtain a moisturizing effect even when sprayed directly on the skin from the stockings. The above results showed that a synergistic effect was exerted on moisturizing the skin and maintaining the moisturized state by applying from above the stockings and including at least an oil as a moisturizing agent.

(Moisture permeability test)
The effect of suppressing moisture transpiration from the skin by measuring the amount of moisture transpiration was verified using the apparatus shown in the schematic diagram of FIG. A filter paper (Toyo Filter Paper Co., Ltd., qualitative filter paper No. 2) with the above stockings on is used as a model substrate 3, and the aerosol spray spray 4 of Example 1 and Comparative Example 1 is sprayed onto the model substrate 3 and applied. (Sample coating amount, 0.011 g / cm ² ), which is naturally dried for 30 minutes, is defined in test container 2 containing water 1 (moisture permeability test method for textile products JIS L1099 4.1.1 (e). (Moisture permeable cup) was attached (FIG. 2). The test container 2 was left in a test environment (temperature 30 ° C., relative humidity 35% RH), the weight of the test container was measured every measurement time, and the weight loss due to water transpiration 5 was evaluated as the moisture transpiration amount. As a blank, the model substrate 3 in which the spray 4 was not sprayed or applied was also evaluated in the same manner. The results are shown in Table 6 below.

  As shown in Table 6 above, when the aerosol spray of Comparative Example 1 is used, there is almost no difference compared to the blank, whereas the amount of water transpiration when the aerosol spray of Example 1 is used is a comparative example. It was 62 to 70% of the amount of moisture transpiration when the aerosol spray of 1 was used, and it was confirmed that the aerosol spray of Example 1 can suppress moisture transpiration. From the above results, it was shown that at least a moisturizing agent containing an oil agent has an effect of suppressing moisture transpiration from the skin.

  From the measurement results of the above moisturizing effect and moisture permeability, as a factor that the skin moisturizing effect is enhanced by the stockings and the oil agent, the oil agent suppresses the transpiration of skin moisture, and the moisture retained between the fibers of the stocking gradually It may be supplied to the skin.

(Surface temperature measurement)
Using the aerosol spray of Example 1 and the aerosol sprays of Comparative Examples 3 and 4, a woman in her 20s wears the above stockings and sprays it for 1 second from a place 20 cm away, and thermography (THEMO VISION 570 manufactured by AGEMA) Was used to measure the surface temperature. The results are shown in Table 7 below.

  As shown in Table 7 above, when the aerosol spray of Example 1 is spray-coated and when the aerosol sprays of Comparative Examples 3 and 4 are spray-coated, it is found that the temperature difference is 1 ° C. or more at all measurement points. It was. Moreover, when the aerosol spray of Example 1 is spray-coated, the temperature returns to the original temperature before spray coating after 240 s, whereas when the aerosol spray of Comparative Examples 3 and 4 is spray-coated, 300 s or more Even after the lapse of time, the temperature remains 2 ° C. lower than the original temperature before spray coating. From the above results, it was found that the oil agent is preferably 20% by weight or less so as not to give an unpleasant cooling feeling (coolness) in the case of mist injection.

(Sensory test)
Based on the results of the performance test, sensory evaluation was performed under the following conditions in order to confirm what kind of evaluation can be obtained sensorially. The results are shown in Table 8 below.
Measurement Method Subjects (20 women 18 to 25 years old) wear stockings, and calves have aerosol sprays of Examples 1 to 4 and Comparative Examples 1, 3, and 4, pump type sprays of Comparative Example 6, and comparison A sensory test was conducted when 0.5 g of the creamy liquid composition of Example 7 was applied. The aerosol sprays of Examples 1 and 3 and Comparative Examples 1, 3, and 4 were sprayed and applied in the form of a mist. The aerosol spray of Example 2 was sprayed into a foam and spread by hand. In the pump type spray of Comparative Example 6, the skin care agent adhering to the stockings by direct injection was further spread with fingers. The creamy liquid composition of Comparative Example 7 was spread on the fingers. The sensory test was performed in a constant temperature and humidity environment with an air temperature of 20 to 22 ° C. and a relative humidity of 30 to 35% RH.
Evaluation criteria : A score is given for each item, and the average score is 1.1 or more, 、, 0.1 to 1.0 or less, ○, −1.0 or more and 0 or less △, −1.1 or less × As evaluated.
It does n’t care (+2), it does n’t care much (+1), it ’s neither (0), it ’s a little worrisome (−1), it ’s worrisome (−2)
Moist feeling・ Good (+2), Slightly good (+1), Neither (0), Slightly bad (-1), Bad (-2)
The evaluation of “good” means that it feels comfortable by being moist, and the evaluation of “bad” means that it feels uncomfortable due to stickiness.
Cold (cooling sensation of suppression) ... good (+2), slightly better (+1), neither (0), slightly worse (-1), bad (-2)
Satisfaction (comprehensive evaluation after use) ··· Good (+2), Slightly good (+1), Neither (0), Slightly bad (-1), Bad (-2)

  As shown in Table 8 above, for the aerosol sprays of Examples 1 to 4, sensory evaluation of “項目” or “◯” was obtained for all items.

Appearance Evaluation The pump-type spray of Comparative Example 6 and the cream-like liquid composition of Comparative Example 7 are not applied by mist-like or foamy injection using a propellant. It was bad. The aerosol sprays of Comparative Examples 3 and 4 were mist sprayed using a propellant, but looked bad. This is because the aerosol sprays of Comparative Examples 3 and 4 do not contain water, and the contents of ethanol and squalane are high (see Table 1). The reason for this is that when the content of ethanol is high (Comparative Example 3), the skin care agent containing a relatively large amount of squalane (oil) due to the large osmotic effect of a large amount of ethanol is applied between the skin and stockings. This is thought to be due to the film thickness changing. Moreover, when content of squalane (oil agent) is high (comparative example 4), it is thought that it is because the thickness of the skin care agent adhering to stockings cannot be made thin. On the other hand, appearance evaluation about the aerosol spray of Examples 1-4 which included water in the skin care agent stock solution, and sprayed and applied in the form of a mist or foam with a propellant was good.

Evaluation of moisture feeling The aerosol spray of Comparative Example 1 does not contain a surfactant, but penetrates with ethanol. However, since no moisturizing agent was contained, the moisture feeling could not be maintained for a long time. As described above, the aerosol spray of Comparative Example 3 has a large osmotic effect due to a large amount of ethanol and contains a relatively large amount of oil agent. Therefore, the amount of the oil agent adhering to the skin increases, and thus the stickiness is strong and moist. It was not a situation to feel. Further, the aerosol spray of Comparative Example 4 was not in a situation where the stickiness was strong and moistened due to the thickness of the skin care agent with a large amount of oil. From the above, in the present invention in which the skin care agent is used from above the stockings, it was shown that the water contained in the skin care agent gives a moist feeling and the moisturizing agent has an effect of maintaining the moist feeling. Further, the creamy liquid composition of Comparative Example 7 having no propellant had a large stickiness and no moisture, but the composition other than the propellant was the same as the creamy liquid composition of Comparative Example 7, The moist feeling of the aerosol spray of Example 4 having a propellant was good. In addition, although the comparative example 6 which is a pump type spray has a good initial feel, since it does not have a propellant, it is applied as an amount more than necessary in one place, and is satisfactory as a skin care agent used from above stockings. It wasn't possible. These results show that, in the present invention using the skin care agent from above the stockings, spraying and applying it in the form of a mist or foam with the propellant eliminates the sticky feeling and gives a moist feeling. .

Evaluation of cooling feeling (coldness) at the time of application Comparative Example 7 of a cream-like liquid composition that is not a spray, Comparative Example 6 of a pump-type spray, and Comparative Examples 3 and 4 of an aerosol spray that does not contain water have an application amount of It felt too cold because it was too much or partly solidified. Moreover, about the aerosol spray of the comparative example 3, it is thought that the heat of vaporization of ethanol has also influenced.

(Antistatic test)
The test was conducted by the JIS L 1094 triboelectric charge decay measurement method. As test samples, the aerosol sprays of Examples 1 to 3 and Comparative Examples 1 and 3 were sprayed onto polyester fibers for 2 seconds and dried for 30 minutes. The blank is obtained by performing the same test on a polyester fiber to which no skin care agent is applied. The drying condition is natural drying (temperature 20 ° C., relative humidity 50% RH). The results are shown in Table 9 below.

  As shown in Table 9 above, when the aerosol sprays of Examples 1 to 3 were sprayed and applied, they were hardly charged, but when the aerosol sprays of Comparative Examples 1 and 3 were sprayed and applied, they were charged compared to the blank. I found out. Therefore, it was found that applying a skin care agent containing water, a surfactant, and a moisturizing agent from above the stockings has an antistatic effect and an auxiliary effect in skin care.

  The present invention can be used, for example, in an aerosol composition for skin care and an aerosol product containing the same.

FIG. 1 is a photograph showing the result of uniform coating performance. FIG. 2 is a schematic view of a moisture permeability test.

Explanation of symbols

1..Water 2..Moisture permeable cup 3..Test material consisting of filter paper and stockings 4..Plastic material 5 .... Transpiration of water

Claims (5)

An aerosol composition comprising:
Contains skin care agent stock solution and propellant,
The skin care agent stock solution contains water, a surfactant and a humectant,
An aerosol composition used for application to skin covered with stockings. The aerosol composition according to claim 1, wherein the humectant includes at least an oil agent. The said skin care agent stock solution contains 30% by weight or more of the water, 0.01 to 10% by weight of the surfactant, and 0.1 to 50% by weight of the humectant. Aerosol composition. An aerosol product in which an aerosol composition is filled in an aerosol container,
The aerosol composition is the aerosol composition according to any one of claims 1 to 3,
Aerosol product for application to skin covered with stockings. The aerosol product according to claim 4, wherein the aerosol spray is in the form of mist (mist) or mousse (foam).

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