Oily foaming aerosol cosmetic

Abstract

To provide an oily foaming aerosol cosmetic excellent in foam formation and foam retention when discharged from an aerosol and capable of providing the texture of a balm-like cosmetic when used, while being flowable liquid whose liquid concentrates can be filled in the aerosol.SOLUTION: There is provided an oily foaming aerosol cosmetic containing liquid concentrates and propellants, the oily foaming aerosol cosmetic comprising (A) dextrin fatty acid ester, (B) polyhydric alcohol fatty acid ester type nonionic surfactant, and (C) self-emulsifying polyhydric alcohol fatty acid ester type nonionic surfactant as the liquid concentrates, and also comprising (D) LPG and (E) carbon dioxide gas as the propellants.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to an oil-based foaming aerosol cosmetic that is discharged from an aerosol container and becomes foamy, and particularly to an oil-based foaming aerosol cosmetic that has the feel of using a balm-like cosmetic during use after being discharged from the aerosol.

Background Art

[0002] In recent years, the demand for waterproof type makeup cosmetics such as mascara, eyeliner, and lipstick that are resistant to sweat and sebum has been increasing, and makeup cosmetics that are even more difficult to come off compared to conventional ones have been developed. In order to wash such cosmetics, it is necessary to use an oil-based cleansing agent containing a large amount of oily components in order to dissolve the waterproof components, and thus the demand for oil-based cleansing agents is also increasing.

[0003] Regarding the aerosolization of oily cosmetics such as oil-based cleansing agents, for example, Patent Document 1 proposes an oil-based foaming aerosol composition containing dextrin fatty acid ester as a foaming aid and an oily component. However, conventional oil-based foaming aerosol compositions have problems that the foaming and foam retention are not sufficient in non-aqueous systems, and the cleansing power decreases in water-containing systems.

[0004] On the other hand, in the cosmetics industry, various cosmetics such as balm-like external skin preparations that are solid or semi-solid at normal temperature have been proposed. As balm-like cosmetics, those having a unique feel of melting on the skin by body temperature after being applied to the skin have received favorable reviews.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The present invention aims to provide a cosmetic for an oily foam aerosol, which is excellent in foaming and foam retention when discharged from an aerosol, and can produce the feel of using a balm-like cosmetic during use while being a fluid liquid in which the stock solution can be filled into an aerosol.

Means for Solving the Problems

[0007] In order to solve the above problems, the cosmetic for an oily foam aerosol of the present invention is a cosmetic for an oily foam aerosol containing a stock solution and a propellant, wherein the stock solution (A) dextrin fatty acid ester, (B) a nonionic surfactant of the polyhydric alcohol fatty acid ester type, and (C) a self-emulsifying nonionic surfactant of the polyhydric alcohol fatty acid ester type, is included, and as the propellant, (D) LPG, and (E) carbon dioxide gas, is a cosmetic for an oily foam aerosol.

[0008] It is preferable that the water content in the stock solution is 5% or less.

[0009] The stock solution contains 2% to 6% by mass of the (A) dextrin fatty acid ester, 0.5% to 5% by mass of the (B) nonionic surfactant of the polyhydric alcohol fatty acid ester type, and 1% to 5% by mass of the (C) self-emulsifying nonionic surfactant of the polyhydric alcohol fatty acid ester type, is preferably included. In this specification, mass% may also be simply referred to as %.

[0010] As the propellant, with respect to the total of the stock solution and the propellant, the (D) LPG is 8% to 20% by mass, and said (E) carbon dioxide: 0.5% by mass to 3.5% by mass, is preferably included.

[0011] It is preferable that the said (B) polyhydric alcohol fatty acid ester type nonionic surfactant is a polyglycerol fatty acid ester with HLB (Hydrophilic-Lipophilic Balance): 4 to 7.

[0012] It is preferable that the (C) self-emulsifying polyhydric alcohol fatty acid ester type nonionic surfactant is a glycerol fatty acid ester with HLB: 2 to 6.

Effect of the Invention

[0013] According to the present invention, it has excellent foaming and foam retention power during ejection from the aerosol, and while the stock solution is a flowing liquid that can be filled into the aerosol, it can produce the feeling of using a balm-like cosmetic during use, showing a remarkable effect.

Mode for Carrying Out the Invention

[0014] The embodiments of the present invention will be described below, but these are shown by way of example, and it goes without saying that various modifications are possible without departing from the technical idea of the present invention.

[0015] The cosmetic for an oily foaming aerosol of the present invention is a cosmetic for an oily foaming aerosol containing a stock solution and a propellant, wherein the stock solution (A) dextrin fatty acid ester, (B) a polyhydric alcohol fatty acid ester type nonionic surfactant, and (C) a self-emulsifying polyhydric alcohol fatty acid ester type nonionic surfactant, is included, as the said propellant, (D) LPG, and (E) carbon dioxide, is included. The cosmetic for an oily foaming aerosol of the present invention, by blending the components (A) to (E), maintains the foaming and foam retention power during discharge from the aerosol, and while the stock solution is a fluid liquid that can be filled into the aerosol, it is semi-solid at room temperature (15°C) during discharge from the aerosol, and can produce a unique balm-like feeling of use of the cosmetic that melts on the skin due to body temperature after contact with the skin.

[0016] (A) As the dextrin fatty acid ester, esters of known fatty acids and dextrin can be widely used. The fatty acid is not particularly limited, but the number of carbon atoms of the fatty acid is preferably 16 to 20, more preferably 16 to 18. As the (A) dextrin fatty acid ester, for example, dextrin palmitate, (palmitic acid / hexyl decanoic acid) dextrin, dextrin myristate, etc. are preferably used. In the present invention, the (A) dextrin fatty acid ester acts as a thickener, and the blending amount of the (A) dextrin fatty acid ester in the stock solution is preferably 2% by mass or more, more preferably 3% by mass or more, and preferably 6% by mass or less, more preferably 5% by mass or less. The dextrin fatty acid ester may be used alone or in combination of two or more.

[0017] As the (B) polyhydric alcohol fatty acid ester type nonionic surfactant, known polyhydric alcohol fatty acid ester type nonionic surfactants can be widely used, and there is no particular limitation, but polyhydric alcohol fatty acid esters with an HLB of 4 to 7 are preferred, and polyglycerol fatty acid esters with an HLB of 4 to 7 such as polyglyceryl oleate and polyglyceryl monostearate are more preferred. In the present invention, the (B) polyhydric alcohol fatty acid ester type nonionic surfactant acts as a foaming agent. The blending amount of the (B) polyhydric alcohol fatty acid ester type nonionic surfactant in the stock solution is preferably 0.5% by mass or more, more preferably 1% by mass or more, and preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 2% by mass or less. The polyhydric alcohol fatty acid ester type nonionic surfactant may be used alone or in combination of two or more kinds.

[0018] As the (C) self-emulsifying polyhydric alcohol fatty acid ester type nonionic surfactant, known self-emulsifying polyhydric alcohol fatty acid ester type nonionic surfactants can be widely used without particular limitation. However, self-emulsifying glycerin fatty acid esters with an HLB of 2 to 6 are preferred, and glyceryl stearate (SE) and the like are more preferred. In the present invention, the (C) self-emulsifying polyhydric alcohol fatty acid ester type nonionic surfactant acts as a foaming agent. The blending amount of the (C) self-emulsifying polyhydric alcohol fatty acid ester type nonionic surfactant in the stock solution is preferably 1% by mass or more, more preferably 2% by mass or more, and preferably 5% by mass or less, more preferably 4% by mass or less. The self-emulsifying polyhydric alcohol fatty acid ester type nonionic surfactant may be used alone or in combination of two or more kinds.

[0019] In addition to the above components (A) to (C), the stock solution may be blended with components commonly used in ordinary cosmetics, such as oily bases, oil-soluble polymers, oil-soluble film-forming agents, polyhydric alcohols, water, surfactants other than components (B) and (C), cleansing agents, thickeners, oils, anti-inflammatory agents, moisturizing agents, emulsification aids, alcohols, powders, preservatives, antioxidants, pigments, pH adjusters, ultraviolet absorbers, whitening agents, antibacterial agents, chelating agents, fragrances, blood circulation promoters, and the like.

[0020] The stock solution may or may not contain water, but a non-aqueous system is preferred. In particular, in order to fully exhibit the feel of balm, it is preferable that the water content in the stock solution is 5% or less, and it is more preferable that it contains no water other than trace amounts of water contained in added ingredients such as fragrances. The oil-based foaming aerosol cosmetic of the present invention can form good foam during ejection even when using a water-free (water content 5% by mass or less) stock solution, and is also excellent in rinsing property and cleansing power.

[0021] Examples of the oil-based base include ester oils such as ethylhexyl palmitate, dicaprylyl carbonate, glyceryl tri(caprylate / caprate), and PEG-20 glyceryl triisostearate, hydrocarbon oils, ether oils, light liquid isoparaffin, liquid paraffin, squalane, and the like.

[0022] The oil-based foaming aerosol cosmetic of the present invention can produce a unique balm-like cosmetic feel in which the stock solution is a fluid liquid that can be filled into an aerosol and melts on the skin due to body temperature after contact with the skin. It is preferable that the viscosity of the stock solution at 15°C is significantly higher than the viscosity of the stock solution at 35°C. Specifically, the viscosity of the stock solution preferably decreases by 1,000 mPa·s or more with a temperature change from 15°C to 35°C, and more preferably decreases by 2,500 mPa·s or more. In addition, in order to produce a balm-like feel, it is preferable that the viscosity of the stock solution at 15°C is 5,000 mPa·s or more.

[0023] The oil-based foaming aerosol cosmetic of the present invention uses (D) LPG and (E) carbon dioxide gas as the propellants in combination. The content of (D) LPG is preferably 8% to 20%, and more preferably 8% to 15% based on the total of the stock solution and the propellant. The content of (E) carbon dioxide gas is preferably 0.5% to 3.5%, and more preferably 1.5% to 3.0% based on the total of the stock solution and the propellant. As the LPG, LPG having a pressure of 0.30 MPa or more is preferable, and LPG having a pressure of 0.39 MPa or more is more preferable.

[0024] The internal pressure of the aerosol at 25°C is preferably 0.40 MPa to 0.90 MPa, and more preferably 0.50 MPa to 0.80 MPa. The above range is effective for foam formation.

[0025] The cosmetic for oily foaming aerosol of the present invention contains a stock solution containing the above-mentioned components (A) to (C), and LPG and carbon dioxide gas as propellants, and is produced by filling the stock solution and the propellant into an aerosol container (pressure-resistant container). The cosmetic for oily foaming aerosol filled in the aerosol container is preferably used as a skin cleansing cosmetic that is discharged in a foamy state during use such as a cleansing agent, a facial wash foam, a shampoo, a body foam, etc., and is particularly suitable as a cleansing agent.

Examples

[0026] The present invention will be described more specifically with reference to the following examples. Needless to say, these examples are shown illustratively and should not be construed in a limited manner.

[0027] (Examples 1 to 10) Each component was blended at the blending ratio (mass%) shown in Table 1 and uniformly mixed to prepare a stock solution. Using the prepared stock solution, the stock solution and the propellant shown in Table 1 were filled into an aerosol can to prepare a cosmetic for oily foaming aerosol of the present invention (this product). Various evaluation tests were performed on the obtained cosmetic for oily foaming aerosol by the following method as an aerosol. The results are shown in Table 1. The internal pressure of the aerosol at 25°C was 0.60 MPa. Also, the viscosity of the stock solution of Example 1 at each temperature was measured using a B-type viscometer / No. 3 under the conditions [12 rpm, 1 minute]. The results are shown in Table 2.

[0028] <Evaluation Test of Foam Retention and Feeling of Use> For 6 subjects, after applying a waterproof mascara, eyeliner, foundation, or lip tint on the back of the hand and allowing it to dry, 5 g of the prepared oily foaming aerosol cosmetic (this product) was discharged, spread, and the foam retention and usability were evaluated on a 5-point scale. The average score of the 6 subjects was calculated, and the average score was evaluated according to the following evaluation criteria. In addition, for the evaluation of usability, the usability of a commercially available balm was set as 5, and it was evaluated on a 5-point scale whether it was close to the usability of the commercially available balm. Also, as a comprehensive evaluation, when the evaluation of foam retention was △ or higher and the evaluation of usability was ○ or higher, it was evaluated as good, and when the evaluation of foam retention was × or the evaluation of usability was △ or lower, it was evaluated as unacceptable. ◎: 4.0 or higher ○: 3.0 or higher and less than 4.0 △: 2.0 or higher and less than 3.0 ×: less than 2.0

[0029]

Table 1

[0030] In the table, for the blending amount (mass %) of each component, each component in the stock solution is expressed as % when the stock solution is 100 mass %, and the remainder is the remainder adjusted so that the total of each component in the stock solution becomes 100. Also, each component of the propellant is expressed as % when the total of the stock solution and the propellant is 100 mass %. Also, in the table, the details of each blended substance are as follows. *1) Glyceryl stearate (SE): Self-emulsifying glyceryl monostearate, HLB: 3.4. *2) Polyglyceryl-2 oleate (HLB: 5.5) *3) Polyglyceryl monostearate (HLB: 5.0) *4) Oily base: Glyceryl tri(caprylate / caprate) *5) PEG-20 glyceryl triisostearate (HLB: 10.9)

[0031]

Table 2

[0032] As shown in Table 1, all of Examples 1 to 10 had excellent foam retention and a good feeling of using the balm. Also, as shown in Table 2, the stock solution used in the present invention had a large decrease in viscosity due to an increase in temperature. The stock solutions of Examples 2 to 10 had the same viscosity as the stock solution of Example 1.

[0033] (Comparative Examples 1 to 5) The stock solution and the aerosol were prepared and the evaluation test was conducted in the same manner as in Example 1, except that the preparation of the stock solution was changed to the composition (mass %) shown in Table 3. The results are shown in Table 3.

[0034]

Table 3

[0035] In the table, the details of the compounding substances are the same as those in Table 1.

[0036] As shown in Table 3, in Comparative Examples 1 to 5 that did not contain any of components (A) to (E), the feeling of using the balm was all insufficient.

Claims

1. A cosmetic for an oily foaming aerosol containing a stock solution and a propellant, wherein the stock solution contains (A)Dextrin fatty acid ester, (B)A polyhydric alcohol fatty acid ester type nonionic surfactant, and (C)A self-emulsifying polyhydric alcohol fatty acid ester type nonionic surfactant, and as the propellant, (D)LPG, and (E)Carbon dioxide gas, are included, A cosmetic for an oily foaming aerosol.

2. The cosmetic for an oily foaming aerosol according to Claim 1, wherein the water content in the stock solution is 5% by mass or less.

3. The stock solution contains 2% by mass to 6% by mass of the (A) dextrin fatty acid ester, 0.5% by mass to 5% by mass of the (B) polyhydric alcohol fatty acid ester type nonionic surfactant, and 1% by mass to 5% by mass of the (C) self-emulsifying polyhydric alcohol fatty acid ester type nonionic surfactant, The cosmetic for an oily foaming aerosol according to Claim 1.

4. As the propellant, based on the total of the stock solution and the propellant, 8% by mass to 20% by mass of the (D) LPG, and 0.5% by mass to 3.5% by mass of the (E) carbon dioxide gas, are included,

5. The cosmetic for an oily foaming aerosol according to Claim 1, wherein the (B) polyhydric alcohol fatty acid ester type nonionic surfactant is a polyglycerol fatty acid ester with an HLB of 4 to 7.

6. The cosmetic for an oily foaming aerosol according to Claim 1, wherein the (C) self-emulsifying polyhydric alcohol fatty acid ester type nonionic surfactant is a glycerol fatty acid ester with an HLB of 2 to 6.

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