JP6403950B2 - Skin moisturizing composition for spraying containing clay mineral - Google Patents

Description

  The present invention relates to a skin moisturizing composition for spraying containing a clay mineral as a moisturizing agent.

  Clay minerals have been used as cosmetic ingredients since they have properties such as moisture retention, adsorptivity, binding, suspension, swelling, film formation, thickening, and emulsification. For example, Patent Documents 1 and 2 disclose water-in-oil emulsion compositions that are stable over time using the emulsifying action of clay minerals. Patent Documents 3 and 4 disclose external preparations for skin utilizing the moisture retention property of clay minerals.

JP 11-29459 A JP 2010-30933 A WO2003 / 041664 pamphlet JP 2002-121128 A

  Conventional skin external preparations containing clay minerals described in Patent Documents 1 to 4 are excellent in moisture retention, but have a sticky feeling when used. Therefore, the problem to be solved by the present invention is to provide a skin moisturizing composition having high moisturizing properties and having both a moist use feeling and a refreshing use feeling.

This invention which solves the said subject is the composition for skin moisturizing for spraying containing the moisturizing agent which consists of clay minerals, and the C2-C4 alcohol.
Here, the “skin moisturizing composition for spraying” is a skin moisturizing composition used by spraying, and is a composition comprising components other than a propellant such as air or gas used for spraying. Say.
The skin moisturizing composition for spraying of the present invention is used by spraying on the skin. When the composition is sprayed on the skin, the alcohol in the composition volatilizes on the skin surface, and a clay mineral film is formed on the skin surface.
ADVANTAGE OF THE INVENTION According to this invention, the skin moisturizing composition for spraying which was compatible with the refreshing use feeling and the moist use feeling can be provided.

In the preferable form of this invention, content of the clay mineral in the composition for skin moisturizing is 0.2-5 mass%. By setting the lower limit of the clay mineral content to the above value, the moist feeling of use becomes more excellent. Moreover, spraying of the composition for skin moisturizing for spraying becomes easy by making the upper limit of content of clay mineral into the said numerical value. As a result, when sprayed on the skin, a clay mineral film is uniformly formed on the skin, and the refreshing feeling increases.
Here, “form a film” means not only a state in which the skin is covered with clay minerals without a gap, but also a state in which the clay minerals are distributed on the skin at intervals.

In a preferred embodiment of the present invention, the clay mineral is hectorite which may be organically modified.
The above clay mineral is a water-swellable clay mineral and has a function of retaining moisture. Therefore, by using the clay mineral in the present invention as described above, it is possible to provide a skin moisturizing composition for spraying which is excellent in moist use feeling.

In a preferred form of the invention, the skin moisturizing composition for spraying comprises a volatile oil.
By setting it as such a form, the dispersibility of a clay mineral improves. In addition, the volatile oil gives a refreshing feeling. As a result, the clay mineral is sprayed as a spray quality in which the clay mineral is uniformly distributed during use, and the volatile oil volatilizes on the skin, so that the skin can be given a moist and refreshing feeling.

  In a preferred embodiment of the present invention, the volatile oil agent is a volatile silicone oil. Since the volatile silicone oil has particularly high volatility, the skin moisturizing composition of the present invention in this form is excellent in moist use feeling.

In the preferable form of this invention, when the composition for skin moisturizing for spraying contains a volatile oil agent, a nonionic surfactant is further included. Incorporation of volatile oils into clay minerals is facilitated by including nonionic surfactants. As a result, the uniformity of the clay mineral distribution during spraying can be further improved, and the refreshing feeling can be enhanced.
Further, since the nonionic surfactant itself forms a film on the skin together with the clay mineral, the skin moisturizing composition for spraying of the present invention in this form is superior in moist feeling.

In a preferred embodiment of the present invention, the nonionic surfactant is a silicone surfactant.
More preferably, the silicone-based surfactant is a polyether-modified silicone.
More preferably, the polyether-modified silicone is polyethylene glycol-modified silicone or polyglycerin-modified silicone.
Since these nonionic surfactants do not give a feeling of stickiness to the skin, the skin moisturizing composition of the present invention having such a form has an excellent refreshing feeling.

A preferred embodiment of the present invention is characterized by not containing water.
The skin moisturizing composition having such a form is excellent in a refreshing use feeling.

The above-mentioned skin moisturizing composition for spraying according to the present invention can be provided in a spray container and provided as a spray product for skin moisturizing.
By setting it as this form, the composition for skin moisturizing for spraying of this invention can be sprayed easily, and a refreshing use feeling and a moist use feeling can be given to skin.
Here, the spray container is a container configured to be able to discharge a liquid as a spray quality. For example, a spray bottle using an external air pressure, an aerosol container using an internal high-pressure gas, an electric pump, or the like is used. An electric spray container is used.

Moreover, the preferable form of the spray product for skin moisturizing of the present invention is a so-called aerosol product in which the spray container is an aerosol container and the aerosol container is further filled with a propellant.
Here, the aerosol container refers to a container having a structure capable of discharging the intended liquid from the valve using the pressure of the propellant.
By adopting such a form, it becomes possible to spray the skin moisturizing composition for spraying as an extremely fine particle spray quality, and realizes a remarkable improvement in a refreshing feeling and a moist feeling. be able to.

  According to the present invention, it is possible to provide a skin moisturizing composition and a spray product for spraying, which satisfy both a refreshing use feeling and a moist use feeling.

  Hereinafter, embodiments of the present invention will be described in detail.

<1> Composition for skin moisturizing for spraying The present invention is a composition for skin moisturizing for spraying, comprising a moisturizing agent made of clay mineral and an alcohol having 2 to 4 carbon atoms.
Hereinafter, each component of the skin moisturizing composition for spraying of the present invention will be described in detail.

<Clay mineral>
If the clay mineral in this invention is used for skin external preparations, such as cosmetics, it can be especially used without a restriction | limiting. For example, smectite-type hectorite; bentonite and montmorillonite; kaolinite; illite; marine clay mineral (sea mud); desert rose clay mineral;

In the present invention, these clay minerals may be organically modified. Here, organic modification means that a part or all of the properties of an organic compound is made into a clay mineral by causing a part of the organic compound to form a strong or loose bond via a covalent bond or an ionic bond. Examples of such modifications include a method of binding a quaternary amino group and an anion portion of a clay mineral, a method of binding a carboxyl group and a cation portion of a clay mineral, and the like. A method of combining the group and the anion portion of the clay mineral is particularly preferable.
Although it does not necessarily limit as a compound which has a quaternary amino group which modifies a clay mineral, The compound called a quaternium (quaternium compound) is illustrated. The quaternium compound is a low-molecular substituted quaternary ammonium salt, and a cosmetic raw material registered in the international standard cosmetic raw material (INCI) is preferable. Furthermore, the compound having a quaternary amino group that modifies the clay mineral is preferably a quaternium compound contained in a conventional external skin preparation among quaternium compounds. Preferred examples of the quaternium compound used in conventional external preparations for skin include stearyl trimethyl ammonium chloride and dimethyl distearyl ammonium chloride.
An example of a method for producing a clay mineral modified with a compound having a quaternary amino group contained in the spray moisturizing composition of the present invention will be described below.
An unmodified clay mineral is dispersed in a dispersion medium. The dispersant is preferably an aqueous solvent, and may be water. A compound having a quaternary amino group is further added to the dispersion containing the dispersed non-organically modified clay mineral and stirred well. The compound having a quaternary amino group may be added after being dissolved in water. The amount of the compound having a quaternary amino group to be added is preferably 0.1 to 20% by mass, more preferably 0.5 to 15% by mass with respect to the amount of the dispersed non-organic modified clay mineral. . This is because a favorable feeling of use is exhibited by taking such a configuration. After stirring, the dispersoid is collected by filtration, dehydrated and dried to obtain the organically modified clay mineral in the present invention. Or the organic modified clay mineral in this invention can also be obtained by removing a dispersing agent by concentrating under reduced pressure without filtering a dispersoid, and making it dry. The obtained organically modified clay mineral is preferably pulverized to a desired size (preferably having a particle size of 1 to 1000 μm) and contained in the skin external preparation of the present invention.
The organically modified clay mineral in the present invention can be prepared and used as described above, but commercially available ones can also be used. Commercially available organically modified clay minerals include, for example, “Bengel FW” (Bentonite Hojun Co., Ltd.), “Laponite XLG”, “Laponite XLS” (Synthetic Hectorite ROCKWOOD), “Benton 38V” (Dimethyldiene). Stearyl ammonium-modified hectorite Elementis Co., Ltd.).

The content of the clay mineral in the skin moisturizing composition for spraying of the present invention is preferably 0.1 to 8% by mass, more preferably 0.2 to 5% by mass, and further preferably 1 to 2.5% by mass. %.
By setting the lower limit of the clay mineral content to the above value, the moist feeling of use becomes more excellent. Moreover, spraying of the composition for skin moisturizing for spraying becomes easy by making the upper limit of content of clay mineral into the said numerical value. As a result, when sprayed on the skin, a clay mineral film is uniformly formed on the skin, and the refreshing feeling increases.

<Alcohol>
In the present invention, an alcohol having 2 to 4 carbon atoms is used. Of these, ethanol, n-propyl alcohol, and isopropanol can be preferably exemplified.
The alcohol content in the spray moisturizing composition of the present invention is preferably 40 to 99% by mass, more preferably 50 to 95% by mass, and even more preferably 60 to 90% by mass. By setting the alcohol content in the above range, a clay mineral film is easily formed due to volatilization of the alcohol in the skin moisturizing composition after spraying, and as a result, a stronger moist feeling can be brought about.

  In the present invention, the weight ratio of clay mineral to alcohol is preferably 1:99 to 1: 5, more preferably 1:70 to 1: 8, and still more preferably 1:50 to 1:10. By setting the weight ratio of the clay mineral and the alcohol to the above ratio, it becomes easy to form a clay mineral film due to volatilization of the alcohol, and as a result, a stronger moist feeling can be brought about.

<Volatile oil>
In a preferred embodiment of the present invention, the skin moisturizing composition comprises a volatile oil. The volatile oil agent is not particularly limited as long as it is generally used as a cosmetic. Preferred examples of the volatile oil include volatile silicone oil, volatile hydrocarbon oil, volatile ester oil, volatile natural animal and vegetable oil, and volatile fluorine oil.

  Preferred examples of the volatile silicone oil include dimethicone having a low polymerization degree, and tetramer or pentamer of cyclic dimethicone, and commercially available ones may be used. Commercially available volatile silicones include “silicone KF96L-1cs” (low polymerization degree, manufactured by Shin-Etsu Chemical Co., Ltd.), “dimethicone silicone DC344” (cyclic dimethicone tetramer, manufactured by Toray Dow Corning Co., Ltd.), and “silicone KF995” ( Cyclic dimethicone pentamer manufactured by Shin-Etsu Chemical Co., Ltd.)

  As the volatile oil in the skin moisturizing composition for spraying of the present invention, it is particularly preferable to use a volatile silicone oil among the oils described above. Volatile silicone oils exhibit particularly good volatility. For this reason, the skin moisturizing composition is volatilized quickly after spraying and promotes the formation of a clay mineral film. As a result, it is possible to achieve both a moist feeling at a higher level and a refreshing feeling. it can.

  In embodiment of this invention, content of the volatile oil agent in the composition for skin moisturizing for spraying becomes like this. Preferably it is 1-50 mass%, More preferably, it is 2.5-40 mass%, More preferably, it is 5-25 mass. %. By setting the content of the volatile oil in the above range, the dispersibility of the clay mineral in the composition is increased, and after the spraying of the composition, it volatilizes quickly and promotes the formation of a clay mineral film. As a result, it is possible to realize both a moist feeling at a very high level and a refreshing feeling.

  In the embodiment of the present invention, the mass ratio of the clay mineral to the volatile oil in the skin moisturizing composition is preferably 1: 0.5 to 1:20, more preferably 1: 1 to 1:15, and even more preferably. 1: 1.5 to 1:10. By making the mass ratio of the clay mineral and the volatile oil into the above range, the dispersibility of the clay mineral in the skin moisturizing composition is enhanced. Therefore, after spraying the skin moisturizing composition, a more uniform film of clay mineral is formed on the skin, resulting in a refreshing feeling of use.

<Nonionic surfactant>
In the preferable form of this invention, when the composition for skin moisturizing for spraying contains a volatile oil agent, a nonionic surfactant is further included. Incorporation of volatile oils into clay minerals is facilitated by including nonionic surfactants. As a result, dispersion of the clay mineral and the volatile oil in the skin moisturizing composition is promoted. Further, the nonionic surfactant itself forms a film on the skin together with the clay mineral.
The nonionic surfactant in the present invention is not particularly limited as long as it is a general nonionic surfactant. Silicone surfactant, fatty acid ester surfactant, higher alcohol surfactant, alkylphenol-based surfactant Surfactant can be illustrated.

In the present invention, the HLB of the nonionic surfactant is preferably 6 or less.
Of the above nonionic surfactants, silicone surfactants can be preferably used in the present invention, and among them, polyoxyethylene (polyethylene glycol) modified silicone, polyoxyethylene / polyoxypropyl copolymer modified Particularly preferred examples include silicone and polyglycerin-modified silicone. Specific examples include polyethylene glycol-10 dimethicone, polyethylene glycol-12 dimethicone, polyglyceryl-3 polydimethylsiloxyethyl dimethicone, and the like. A commercial item can be used as a nonionic surfactant in this invention. Commercially available products include, for example, “Nikkor DGMO-90” (diglycerin monolate manufactured by Nikko Chemicals Co., Ltd.), “silicone KF6017” (polyethylene glycol-10 dimethicone manufactured by Shin-Etsu Chemical Co., Ltd.), “silicone SH3775M” (polyethylene glycol- 12 dimethicone, manufactured by Toray Dow Corning Co., Ltd.), “silicone KF6104” (polyglyceryl-3 polydimethylsiloxyethyl dimethicone, manufactured by Shin-Etsu Chemical Co., Ltd.), and the like.

In the present invention, fatty acid ester surfactants can also be preferably used. In particular, a fatty acid ester of polyglycerol can be preferably used. As the fatty acid ester of polyglycerol, a fatty acid having 12 to 18 carbon atoms and a polyglycerol polymerization degree of 1 to 6 can be used particularly preferably.
For example, glyceryl laurate, polyglyceryl laurate-2, glyceryl oleate, polyglyceryl sesquioleate-2, polyglyceryl trioleate-5, and polyglyceryl hexastearate-5 are preferably used.

In preferable embodiment of this invention, content of the nonionic surfactant in the composition for skin moisturizing is 0.5-30 mass%, More preferably, it is 1-20 mass%, More preferably, it is 2.5-10 mass. %.
In a preferred embodiment of the present invention, the mass ratio of the clay mineral to the nonionic surfactant in the skin moisturizing composition is 1:10 to 1: 1, more preferably 1: 5 to 1: 1.5. More preferably, the ratio is 1: 3 to 1: 4. By making the content ratio of the clay mineral and the nonionic surfactant within the above range, the coating of the clay mineral and the nonionic surfactant formed on the skin becomes more moisturizing and moisturized. Further improvement in the feeling of use can be realized.
In a preferred embodiment of the present invention, the mass ratio of the nonionic surfactant to the volatile oil in the skin moisturizing composition is 1:10 to 1: 0.1, more preferably 1: 7 to 1: 0.5, more preferably 1: 4 to 1: 1. By setting the content ratio of the nonionic surfactant and the volatile oil in the above range, the dispersion of the volatile oil by the nonionic surfactant is more effectively performed in the skin moisturizing composition, As a result, a stronger refreshing feeling can be realized.

  In a preferred form of the present invention, the proportion of the above-described components (clay mineral, alcohol, volatile oil, nonionic surfactant) in the skin moisturizing composition for spraying is preferably 80% by mass or more, more preferably. Is 90% by mass or more, more preferably 99% by mass or more.

<Other ingredients>
The skin moisturizing composition for spraying of the present invention may contain any active ingredient. For example, hydrocarbons containing a hardly volatile or non-volatile oil such as α-olefin oligomer, pristane, ozokerite, ceresin, petrolatum, microcrystalline wax, squalane, polybutene; dimethylpolysiloxane, methylphenylpolysiloxane, dimethylsiloxane Non-volatile or nonvolatile silicone oil such as organopolysiloxane such as methylphenylsiloxane copolymer; 2-ethylhexanoic acid triglyceride, 2-ethylhexanoic acid cetyl, 2-ethylhexanoic acid pentaerythritol, 2-ethylhexanoic acid Nonvolatile ester oils such as trimethylolpropane, 2-ethylhexyl palmitate, isocetyl isononanoate, isopropyl myristate, cetyl octanoate; jojoba oil, olive oil, macadamia nut oil, Nonvolatile natural animal and vegetable oils such as fruit oil, tea seed oil, safflower oil, rice bran oil; polyhydric alcohols such as polyethylene glycol, glycerin, erythritol, sorbitol, xylitol, maltitol, propylene glycol, 2,4-hexanediol Moisturizing ingredients such as sodium pyrrolidone carboxylate, lactic acid, sodium lactate; paraaminobenzoic acid UV absorbers; anthranilic acid UV absorbers; salicylic acid UV absorbers; cinnamic acid UV absorbers; benzophenone UV absorbers; Sugar-based ultraviolet absorbers; ultraviolet absorbers such as 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole and 4-methoxy-4′-t-butyldibenzoylmethane; antibacterial agents such as phenoxyethanol Etc. can be preferably exemplified.
In preferable embodiment of this invention, content of the water in the composition for skin moisturizing is 5 mass% or less, More preferably, it is 2 mass% or less, More preferably, it is 0 mass%. By setting the water content as described above, the stickiness when using the skin moisturizing composition is reduced, and the refreshing feeling can be further improved.

Moreover, in preferable embodiment of this invention, content of solid substances other than a clay mineral becomes like this. Preferably it is 5 mass% or less, More preferably, it is 1 mass% or less, More preferably, it is 0 mass%.
Here, the solid matter includes not only the component in the solid phase in the solution of the composition but also the component in the liquid phase in the solution, but solidifies when the solvent ethanol is volatilized after spraying.
Examples of such solids include cosmetic powders and film-forming polymers.
Examples of cosmetic powders include powders such as mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, anhydrous silicic acid (silica), aluminum oxide, barium sulfate, etc., whose surfaces may be treated. Body; surface treated, bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide inorganic pigments; surface treated, mica titanium Pearl agents such as fish phosphorus foil, bismuth oxychloride; red 202, red 228, red 226, yellow 4, blue 404, yellow 5, red 505, red, which may be raked Organic dyes such as 230, red 223, orange 201, red 213, yellow 204, yellow 203, blue 1, green 201, purple 201, red 204; Down powder, polymethyl methacrylate, nylon powder, organic powders such as organopolysiloxane elastomers, and the like.
Examples of the film-forming polymer include the following. Examples of the amphoteric polymer-forming polymer include a monochloroacetic acid amphoteric product of a dialkylaminoethyl methacrylate / alkyl methacrylate ester copolymer, a hydroxypropyl acrylate / butylaminoethyl methacrylate / octylamide acrylate copolymer, and the like. Can be mentioned. Examples of the film-forming polymer that is an anionic polymer include methyl vinyl ether / alkyl maleic anhydride alkyl half ester copolymer, vinyl acetate / ctronic acid copolymer, vinyl acetate / crotonic acid / vinyl neodecanoate copolymer, vinyl acetate / Crotonic acid / vinyl propionate copolymer, vinyl acetate / maleic acid monobutyl ester / isobornyl acrylate copolymer, (meth) acrylic acid / (meth) acrylic acid ester copolymer, acrylic acid / acrylic acid alkyl ester / Alkyl acrylamide copolymer, polyvinylpyrrolidone / acrylate / (meth) acrylic acid copolymer, and the like. Examples of the film-forming polymer which is a cationic polymer include vinyl imidazolium trichloride / vinyl pyrrolidone copolymer, hydroxyethyl cellulose / dimethyl diallylammonium chloride, vinyl pyrrolidone / quaternized dimethylaminoethyl methacrylate copolymer, polyvinyl pyrrolidone / alkyl. Amino acrylate copolymer, polyvinyl pyrrolidone / alkyl amino acrylate / vinyl caprolactam copolymer, vinyl pyrrolidone / methacrylamide propyl trimethyl ammonium chloride copolymer, alkyl acrylamide / acrylate / alkyl amino alkyl acrylamide / polyethylene glycol methacrylate copolymer, etc. Can be mentioned. Examples of the film-forming polymer that is a nonionic polymer include polyvinyl pyrrolidone, polyvinyl pyrrolidone / vinyl acetate copolymer, polyvinyl pyrrolidone / vinyl acetate / vinyl propionate terpolymer, vinyl acetate / N-vinyl-5-methyl- Examples include 2-oxazoline copolymer.

  The skin moisturizing composition of the present invention can be produced by mixing the above-described components by a conventional method.

  The spray moisturizing composition for spraying of the present invention can be used as a skin external preparation. Examples of the external preparation for skin include pharmaceuticals and cosmetics, but the spray moisturizing composition of the present invention is particularly preferably used as a cosmetic.

<2> Spray product The present invention also relates to a spray product for skin moisturizing, wherein the spray moisturizing composition is contained in a spray container. In the embodiment of the present invention, examples of the spray container include a spray bottle using an external air pressure, an aerosol container using an internal high-pressure gas, and an electric spray container using an electric pump.
And in the more preferable form of this invention, it is set as the aerosol product for skin moisturizing formed by filling the said skin moisturizing composition and propellant for spraying into an aerosol container.
In the aerosol product for moisturizing skin of the present invention, a liquefied gas or a compressed gas can be used as a propellant. As the liquefied gas, liquefied petroleum gas (LPG), dimethyl ether (DME), fluorinated hydrocarbon or the like is preferably used. As the compressed gas, carbon dioxide, nitrogen, or nitrous oxide can be preferably used.

In a particularly preferred embodiment of the skin moisturizing aerosol product of the present invention, liquefied petroleum gas is used as a propellant. If liquefied petroleum gas is used as the propellant, a mixture of the skin moisturizing composition and liquefied petroleum gas is sprayed when the aerosol product of the present invention is used. When such a sprayed mixture adheres to the skin, the alcohol and liquefied petroleum gas in the mixture quickly volatilize, and a clay mineral film is formed on the skin in a very short time, significantly improving the refreshing feel. Leads to.
In this case, in the mixture of the skin moisturizing composition for spraying and the petroleum liquefied gas filled in the aerosol container, the content of the liquefied petroleum gas is preferably 30 to 90% by mass, more preferably 40 to 80% by mass, Preferably it is 50-70 mass%. By setting the content of liquefied petroleum gas in the above range, formation of a clay mineral film is remarkably promoted.

<Examples 1 to 7, Comparative Examples 1 and 2>
According to the formulation shown in Table 1, the skin moisturizing compositions and aerosol products for spraying of Examples 1 to 7 and Comparative Examples 1 and 2 were prepared. That is, the component (I) was stirred at room temperature and uniformly mixed to prepare a skin moisturizing composition for spraying, and then filled into an aerosol container. Then, the component (b), that is, the propellant (LPG) was filled in the container to obtain the aerosol product of the present invention and the aerosol product of the comparative example.
<Comparative Example 3>
The ingredients in Table 2 were mixed by stirring at room temperature to obtain a comparative skin moisturizing composition.
(Unit: mass%)
(Unit:% by mass)

* 1) "Benton 38V" manufactured by Elementis * 2) "Bengel FW" manufactured by Hojun Co., Ltd. * 3) "Silicone KF6017" manufactured by Shin-Etsu Chemical Co., Ltd. * 4) "Silicone KF6104" manufactured by Shin-Etsu Chemical Co., Ltd.

<Test Example 1> Measurement of Adhesiveness From the aerosol products of Examples 1 to 7 and Comparative Examples 1 and 2, 0.1 ml of the filled liquid mixture was sprayed onto an area of 1.2 cmφ on the slide glass. Moreover, 0.1 ml of the composition of Comparative Example 3 was applied onto a slide glass with a finger in an area of 1.2 cmφ. Then, taking into consideration the state in use of the lotion, it was dried at 40 ° C. and a relative humidity of 60% for 1 hour to prepare a test film. The adhesion of this test film was evaluated using a handy pressure tester KES-G5 (manufactured by Kato Tech Co., Ltd.). The adhesiveness was expressed as an adhesive force (g) when the head of the apparatus was peeled off from the coating film. That is, the higher this value, the higher the adhesiveness of the coating film. The results are shown in Table 3.

<Test Example 2> Evaluation of skin moisturizing ability The inner part of the forearm of a volunteer panelist was washed with water, dried, and then the transdermal moisture transpiration (TEWL) was measured using a tevameter (Tewameter TM210 Course + Khazaka). Then, it processed with 0.5% of SLS aqueous solution, sprayed each composition of Examples 1-7 or Comparative Examples 1-2, or apply | coated the composition of Comparative Example 3 with the finger | toe, and measured TEWL of the same site | part on the next day. . The value of the cream application site when TEWL before SLS treatment was set to 100 was determined as the recovery rate. The results are shown in Table 3. The closer the number is to 100, the more TEWL is recovered, that is, the higher the skin moisture retention. The results are shown in Table 3.

<Test Example 3> Evaluation of feeling of use By five skilled evaluators, the compositions of Examples 1 to 7 and the compositions of Comparative Examples 1 and 2 being applied onto the skin were sprayed on the skin, and the composition of Comparative Example 3 was applied. The refreshing feeling and moist feeling when an object was applied with a finger were subjected to sensory evaluation according to the following evaluation criteria.

Compared to the composition of Comparative Example 2, there is not much refreshing feeling: 1 point, somewhat unsatisfactory 2 points, equivalent: 3 points, present: 4 points, considerably present: 5 points Moist use feeling is comparative example Compared to the composition of 1 is not quite: 1 point, somewhat not 2 points, equivalent: 3 points, some: 4 points, quite: 5 points The average value of the scores of 5 people was used as the sample score. The results are shown in Table 3.

<Result>
(1) Results of Test Example 1 The composition of Comparative Example 1 containing no clay mineral has a relatively low value of 4.1 g of tackiness. On the other hand, when the compositions containing clay minerals are compared, the compositions of Examples 1 to 7 containing alcohol are less sticky than the composition of Comparative Example 2 containing no alcohol. I understand that.
From this result, it can be seen that the adhesiveness of the composition is increased by containing the clay mineral, but the increase in the adhesiveness can be suppressed by containing the alcohol.
Moreover, it turns out that the composition of Examples 1-7 apply | coated by filling in an aerosol container and spraying is significantly low compared with the composition of the comparative example 3 apply | coated with the finger | toe.
From this result, it is understood that the adhesiveness of the coating film formed by the composition is reduced by filling the aerosol container and spraying and coating.
From the above results, it can be seen that a test film with low tackiness, that is, non-stickiness can be obtained by the combination of clay mineral and alcohol having 2 to 4 carbon atoms and the usage pattern of spraying.
Therefore, in order to obtain a skin moisturizing composition that provides a refreshing feeling of use (a non-sticky feeling of use), it is important to use a combination of a clay mineral and a C2-4 alcohol, and spraying. I understand.

(2) Results of Test Example 2 From the test results of the TEWL recovery rate of Test Example 2, the compositions of Examples 1 to 7 containing clay minerals are higher in TWEL than the composition of Comparative Example 1 containing no clay minerals. It can be seen that the recovery rate is shown.
That is, it can be seen that the presence of clay minerals in the composition greatly contributes to the TEWL recovery rate, that is, the skin moisture retention.

(3) Results of Test Example 3 From the evaluation results of the feeling of use in Test Example 3, the compositions of Examples 1 to 7 containing a clay mineral and an alcohol having 2 to 4 carbon atoms and applied to the skin by spraying were refreshed. It can be seen that both the feeling of use and the feeling of moist use are compatible at a high level of 4 or more.

(4) Summary of results From the results of Test Examples 1 to 3, the spray moisturizing composition of the present invention is not sticky depending on the combination of clay minerals and alcohol having 2 to 4 carbon atoms and the form of spraying. It can be seen that a refreshing feeling, a high skin moisture retention and a moist feeling are compatible at a very high level.

According to the skin moisturizing composition for spraying of the present invention, it is possible to provide a cosmetic spray preparation that achieves both a refreshing use feeling and a moist use feeling.

Claims (9)

A humectant composed of clay minerals, a volatile alcohol having 2 to 4 carbon atoms, a volatile oil agent, and a nonionic surfactant,
The nonionic surfactant is a polyether-modified silicone ;
A skin moisturizing composition for spraying, wherein the alcohol content is 40 to 99% by mass .   2. The skin moisturizing composition for spraying according to claim 1, wherein a weight ratio of the clay mineral to the alcohol is 1:70 to 1: 8. 3. The skin moisturizing composition for spraying according to claim 1 or 2 , wherein the volatile oil agent is a volatile silicone oil. The composition for skin moisturizing for spraying according to any one of claims 1 to 3, wherein the polyether-modified silicone is polyethylene glycol-modified silicone and / or polyglycerin-modified silicone. The skin moisturizing composition for spraying according to any one of claims 1 to 4 , wherein the clay mineral content is 0.2 to 5 mass%. The composition for skin moisturizing according to any one of claims 1 to 5 , wherein the clay mineral is hectorite which may be organically modified. The composition for skin moisturizing for spraying according to any one of claims 1 to 6 , wherein the composition does not contain water. A spray product for skin moisturizing, comprising the spray moisturizing composition according to any one of claims 1 to 7 in a spray container. The spray product for moisturizing skin according to claim 8 , wherein the spray container is an aerosol container, and the aerosol container is further filled with a propellant.