JP5930647B2 - Emulsifying antiperspirant cosmetics - Google Patents

Description

  The present invention relates to an emulsified antiperspirant cosmetic.

  Conventionally, as an antiperspirant cosmetic, an aerosol type that is easy to use and can instantly feel an antiperspirant effect is most widely used. However, in general, aerosol-type antiperspirant cosmetics have the advantage of being able to be applied over a wide range, but have the disadvantage of poor antiperspirant effect due to the spray application of the drug in a mist form. .

  For this reason, in order to increase the sustainability of the antiperspirant effect, emulsifier type antiperspirant cosmetics such as creams and emulsions having excellent adhesion to the skin have been developed. However, when the emulsifier type is used, the adhesion to the skin is excellent, but the residual feeling on the skin (coating feeling) is conspicuous and there is a problem that the feeling of use is poor. Moreover, since the drying after application is slow, there is a problem that a sticky feeling is likely to occur and it is difficult to obtain a smooth and light feeling of use.

  Therefore, in cream type antiperspirant cosmetics, attempts have been made to suppress the residual feeling (coating feeling) on the skin and enhance the feeling of use. Specifically, an antiperspirant cream composition (for example, see Patent Document 1) containing a volatile silicone, an antiperspirant component, a clay thickener, and a nonvolatile paraffin hydrocarbon, a silicone derivative An antiperspirant composition in the form of a water-in-oil emulsion containing an emulsifier (see, for example, Patent Document 2), a water-in-oil emulsion containing an antiperspirant component, a specific cross-linked silicone compound, and a lower alcohol An antiperspirant composition (see, for example, Patent Document 3), a zinc oxide powder having a specific average particle size, and a spherical powder having a specific average particle size which has been subjected to a hydrophobization treatment. A water-in-oil emulsion composition for antiperspirant / deodorant (for example, see Patent Document 4) has been proposed.

  However, these trials can improve the feeling of stickiness, but since a large amount of silicone-based oils and silicone-based surfactants are blended in, the wash-off from the skin during cleaning becomes extremely worse and used. There is a problem of inferior feeling. Therefore, in order to increase washing off from the skin, it may be considered to use an emulsifier type using a surfactant other than the silicone surfactant, but these means are insufficient because of poor adhesion to the skin. There is a problem that a real feeling of use cannot be obtained. In addition, if the adhesion to the skin is to be increased, there is a problem that the feeling of stickiness stands out because drying after application is delayed. Furthermore, there is also a problem that the emulsion stability is adversely affected.

Japanese Patent Laid-Open No. 3-200720 JP 2005-536477 A JP-A-2005-179305 JP 2011-26264 A

  The present invention has been made in view of the above prior art, has excellent emulsification stability, improves the slowness of drying after application, which contributes to stickiness, and can maintain an excellent antiperspirant effect. An object of the present invention is to provide an emulsified antiperspirant cosmetic that exhibits an excellent effect on washing off the skin during washing.

That is, the present invention
[1] (A) Antiperspirant component, (B) Glycerin fatty acid ester type nonionic surfactant having 2 to 8 HLB, (C) Nonionic surfactant having 12 to 18 HLB, (D) High grade An emulsified antiperspirant cosmetic comprising alcohol and (E) silicone oil (E1) and / or fatty acid ester oil (E2),
The content of the component (B) is 2.5 to 5% by mass, the content of the component (C) is 2 to 8% by mass, the content of the component (D) is 6 to 10% by mass, ) Component content is 0.02-1% by mass,
The mass content ratio of the component (B) and the component (C) is (B) :( C) = 1: 1 to 1: 3 ,
The emulsified antiperspirant cosmetic, wherein the component (D) is a combination of cetyl alcohol and stearyl alcohol ,
[2] The component (E1) is dimethyl silicone oil, emulsified antiperspirant cosmetic according to the at least one selected from the group of methyl phenyl silicone oil and cyclic dimethyl silicone oil [1], and [3 Furthermore, it relates to the emulsified antiperspirant cosmetic according to [1] or [2] , further comprising (F) a bactericidal component.

  The emulsified antiperspirant cosmetic of the present invention has the effect of being excellent in emulsion stability. Moreover, since it is excellent in quick-drying property after application | coating, there exists an effect that there is no stickiness in the skin which sweated and the smooth skin state is obtained. Furthermore, the emulsified antiperspirant cosmetic composition of the present invention exhibits an excellent effect of washing off from the skin at the time of washing, despite having good adhesion to the skin and maintaining the antiperspirant effect.

  The emulsified antiperspirant cosmetic of the present invention comprises (A) an antiperspirant component, (B) a glycerin fatty acid ester type nonionic surfactant having 2 to 8 HLB, and (C) a nonionic having 12 to 18 HLB. It comprises a surfactant, (D) a higher alcohol, and (E) a silicone oil (E1) and / or a fatty acid ester oil (E2).

  The antiperspirant component (A) is not particularly limited as long as it is a drug that suppresses the generation of sweat by converging the skin. For example, aluminum chloride, potassium aluminum sulfate, aluminum sulfate, aluminum acetate, chlorohydroxyaluminum And allantoinchlorohydroxyaluminum, zinc paraphenolsulfonate, and the like. These (A) components may be used individually by 1 type, and can also be used in combination of 2 or more type as appropriate. As a suitable component (A), it is preferable to use potassium aluminum sulfate, chlorohydroxyaluminum, allantochlorohydroxyaluminum, and zinc paraphenolsulfonate from the viewpoint of the antiperspirant effect.

  The content of the component (A) is not particularly limited as long as the desired effect is sufficiently imparted, but usually 0.1% by mass or more is preferable in the cosmetic from the viewpoint of the antiperspirant effect, and more preferable. Is 0.3% by mass or more. Moreover, from a viewpoint of skin irritation, 40 mass% or less is preferable, More preferably, it is 30 mass% or less. From these viewpoints, the content of the component (A) is preferably 0.1 to 40% by mass, more preferably 0.3 to 30% by mass.

  As the glycerin fatty acid ester type nonionic surfactant as the component (B), those having an HLB of 2 to 8 are used. Specific examples of the component (B) include glyceryl myristate (HLB3.5), glyceryl palmitate (HLB5.0), glyceryl monostearate (HLB4.0), lipophilic glyceryl monostearate (HLB3. 0), glyceryl monostearate (HLB3.0), glyceryl monoisostearate (HLB6.0), glyceryl oleate (HLB2.5), lipophilic glyceryl monooleate (HLB2.5), etc. can do. These (B) components may be used individually by 1 type, and can also be used in combination of 2 or more types as appropriate. Suitable components (B) are glyceryl monostearate (HLB4.0), lipophilic glyceryl monostearate (HLB3.0), self-emulsifying glyceryl monostearate (HLB3. 0), it is preferable to use lipophilic glyceryl monooleate (HLB2.5).

  The content of the component (B) is not particularly limited as long as the desired effect is sufficiently imparted, but usually 1% by mass or more is preferable in the cosmetic from the viewpoint of improving the emulsion stability, and more preferably. 2.5% by mass or more. Moreover, from a viewpoint of high temperature stability, 10 mass% or less is preferable, More preferably, it is 5 mass% or less. From these viewpoints, the content of the component (B) is preferably 1 to 10% by mass, more preferably 2.5 to 5% by mass.

  (C) As a nonionic surfactant of a component, a thing with 12-18 of HLB is used. Specific examples of the component (C) include polyoxyethylene (4) lauryl ether (HLB11.5), polyoxyethylene (9) lauryl ether (HLB14.5), polyoxyethylene (10) cetyl ether (HLB13). .5), polyoxyethylene (15) cetyl ether (HLB15.5), polyoxyethylene (20) cetyl ether (HLB17.0), polyoxyethylene (23) cetyl ether (HLB18.0), polyoxyethylene ( 4) Stearyl ether (HLB9.0), polyoxyethylene (20) stearyl ether (HLB18.0), polyoxyethylene (7) oleyl ether (HLB10.5), polyoxyethylene (10) oleyl ether (HLB14.5) ), Polyoxyethylene (15 Oleyl ether (HLB16.0), polyoxyethylene (20) oleyl ether (HLB17.0), polyoxyethylene (20) octyldodecyl ether (HLB13.0), polyoxyethylene (25) octyldodecyl ether (HLB14.0) ) Polyoxyethylene alkyl ethers; polyoxyethylene (6) sorbitan monolaurate (HLB13.3), polyoxyethylene monolaurate (20) sorbitan (HLB17.0), polyoxyethylene (20) sorbitan monopalmitate ( Examples thereof include polyoxyethylene sorbitan fatty acid esters such as HLB 16.0) and polyoxyethylene monostearate (20) sorbitan (HLB 15.0). These (C) components may be used singly or in appropriate combination of two or more. Suitable components (C) include polyoxyethylene (15) cetyl ether (HLB15.5), polyoxyethylene (20) cetyl ether (HLB17), and polyoxyethylene (20) stearyl ether from the viewpoint of emulsion stability. (HLB18), polyoxyethylene monostearate (20) sorbitan (HLB15.0) is preferably used. In addition, what only the numerical value is described in the said parenthesis represents the addition mole number of ethylene oxide.

  The content of the component (C) is not particularly limited as long as the desired effect is sufficiently imparted, but usually 1% by mass or more is preferable in the cosmetic from the viewpoint of improving the emulsion stability, and more preferably. 2% by mass or more. Moreover, 10 mass% or less is preferable from a stability viewpoint, More preferably, it is 8 mass% or less. From these viewpoints, the content of the component (C) is preferably 1 to 10% by mass, more preferably 2 to 8% by mass.

  In the present invention, from the viewpoint of enhancing the emulsion stability, and from the viewpoint of improving the washing off from the skin at the time of washing, the respective contents of the component (B) and the component (C) described above are the mass content ratio, (B): It is preferably prepared within a range satisfying (C) = 1: 0.5 to 1: 4, and prepared within a range satisfying (B) :( C) = 1: 1 to 1: 3. More preferably.

  The higher alcohol as the component (D) is not particularly limited as long as it can exhibit a desired effect sufficiently, whether it is a linear or branched chain, saturated or unsaturated higher alcohol. Examples thereof include higher alcohols having 12 to 22 carbon atoms. Specifically, linear saturated higher alcohols having 12 to 22 carbon atoms, such as lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, and behenyl alcohol; straight-chain alkyls such as oleyl alcohol, linoleyl alcohol, and linolenyl alcohol. Examples include saturated higher alcohols having 12 to 18 carbon atoms; branched-chain saturated higher alcohols having 18 to 20 carbon atoms such as isostearyl alcohol, octyldodecanol, and hexyldecanol. These (D) components may be used alone or in a suitable combination of two or more.

  As the suitable component (D), it is preferable to use at least two kinds selected from the group of straight chain saturated 12 to 22 higher alcohols from the viewpoint of enhancing adhesion to the skin. It is more preferable to use at least two selected from the group of higher alcohols having 16 to 22 carbon atoms, and it is most preferable to use cetyl alcohol and stearyl alcohol in combination.

  The content of the component (D) is not particularly limited as long as the desired effect is sufficiently imparted, but usually 0.1% by mass or more is preferable in the cosmetic from the viewpoint of enhancing the adhesion to the skin. More preferably, it is 3% by mass or more. Moreover, from a viewpoint of high temperature stability, 10 mass% or less is preferable, More preferably, it is 8 mass% or less. From these viewpoints, the content of the component (D) is preferably 0.1 to 10% by mass, more preferably 3 to 8% by mass.

  Examples of the component (E) silicone oil (E1) include methylpolysiloxane, dimethylsilicone oil such as highly polymerized methylpolysiloxane having an average polymerization degree of 650 to 7000; methylphenylsilicone oil such as methylphenylpolysiloxane; Cyclic dimethyl silicone oils such as methylcyclopolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane; aminopropylmethylsiloxane / dimethylsiloxane copolymer, aminoethylaminopropylsiloxane / dimethylsiloxane copolymer Amino-modified silicones such as coalesce, aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer, carboxy-modified silicone, fatty acid-modified silicone, alcohol Can be exemplified by methyl hydrogen polysiloxane, dimethiconol the like; modified silicone, aliphatic alcohol-modified silicones, epoxy-modified silicones, fluorine-modified silicones, modified silicones such as alkyl-modified silicone. One of these (E1) components may be used alone, or two or more thereof may be used in appropriate combination.

  As a suitable component (E1), it is preferable to use at least one selected from the group of dimethyl silicone oil, methylphenyl silicone oil and cyclic dimethyl silicone oil from the viewpoint of improving the speed of drying after coating.

  Moreover, as the fatty acid ester oil (E2) of the component (E), for example, isopropyl palmitate, isopropyl myristate, isopropyl myristate, myristyl myristate, cetyl palmitate, isostearyl myristate, 2-octyldodecyl myristate, 2-ethylhexyl palmitate, isostearyl palmitate, isononyl isononanoate, isotridecyl isononanoate, 2-ethylhexyl palmitate, cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, stearyl 2-ethylhexanoate, ethyl isostearate Hexyl isostearate, neopentyl glycol di-2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, dica Neopentyl glycol phosphate, dipentaerythritol fatty acid ester (1), dipentaerythritol fatty acid ester (2), glyceryl tri (capryl / capric acid), glyceryl triisopalmitate, glyceryl triisostearate, (adipic acid / Examples thereof include 2-ethylhexanoic acid / stearic acid) glyceryl oligoester and the like. These (E2) components may be used singly or in appropriate combination of two or more.

  Preferred components (E2) include isononyl isononanoate, glyceryl tri-2-ethylhexanoate, (adipic acid, 2-ethylhexanoic acid, stearic acid) glyceryl oligoester, dipentaerythritol fatty acid from the viewpoint of suppressing stickiness. It is preferable to use the ester (1).

  The content of the component (E) is not particularly limited as long as the desired effect is sufficiently imparted, but usually 0.01% by mass or more is preferable in the cosmetic from the viewpoint of improving the emulsion stability. Preferably it is 0.02 mass% or more. Moreover, from a viewpoint of a usability | use_condition, 5 mass% or less is preferable, More preferably, it is 1 mass% or less. From these viewpoints, the content of the component (E) is preferably 0.01 to 5% by mass, more preferably 0.02 to 1% by mass.

  The emulsified antiperspirant cosmetic of the present invention can also contain (F) a bactericidal component. The component (F) to be used is not particularly limited as long as it is a drug that suppresses the decomposition of sweat and sebum by sterilizing and sterilizing the resident skin bacterium. For example, benzalkonium chloride, benzethonium chloride, chloride Examples include lysotium, halocarban, trichlorocarbanilide, chlorhexidine hydrochloride, isopropylmethylphenol, aluminum phenolsulfonate, triclosan, and chlorhexidine gluconate. One of these components may be used alone, or two or more thereof may be used in appropriate combination. As a suitable component (F), it is preferable to use benzalkonium chloride, lysothium chloride, isopropylmethylphenol, and triclosan from the viewpoint of bactericidal / sterilizing effect.

  The content of the component (F) is not particularly limited as long as the desired effect is sufficiently imparted, but usually 0.01% by mass or more is preferable in the cosmetic from the viewpoint of bactericidal / sterilizing effect. More preferably, it is 0.1 mass% or more. Moreover, 3 mass% or less is preferable from a viewpoint of safety, More preferably, it is 1 mass% or less. From these viewpoints, the content of the component (F) is preferably 0.01 to 3% by mass, more preferably 0.1 to 1% by mass.

  In the emulsified antiperspirant cosmetic of the present invention, within the range not impairing the effects of the present invention, in addition to the above-described components, components commonly used in cosmetics such as liquid paraffin, light isoparaffin, light liquid isoparaffin, Vaseline, l-menthol, l-menthyl glyceryl ether, menthyl lactate, lower alcohol, talc, silicic anhydride, octenyl succinic acid corn starch ester aluminum, methylsiloxane network polymer, plant extract, chelating agent, antioxidant, fragrance, etc. It can mix | blend suitably according to the objective.

  In addition, the emulsified antiperspirant cosmetic of the present invention can be applied to, for example, emulsions, creams, waxes, and the like. For example, it can manufacture by emulsifying by the phase inversion emulsification method etc. which used the homomixer. Moreover, mixing and emulsification may be performed separately or simultaneously.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not limited only to these Examples. The blending amount represents “% by mass” unless otherwise specified.

(Sample preparation 1)
According to the composition described in Tables 1 to 4, antiperspirant cosmetics of Examples 1 to 10 and Comparative Examples 1 to 10 were respectively prepared in an emulsifier type and subjected to the following evaluation. The results are shown in Tables 1 to 4, respectively. In addition, what has only the numerical value described in the parenthesis in a table | surface represents the addition mole number of ethylene oxide.

(Test Example 1: Evaluation of emulsion stability)
The emulsified antiperspirant cosmetics obtained in each Example and each Comparative Example were each enclosed in a 50 mL transparent glass container and visually observed for the state of the emulsified system when stored in a constant temperature bath at 40 ° C. for 4 weeks. And evaluated according to the following evaluation criteria.

<Evaluation criteria for emulsion stability>
A: The emulsified state is maintained immediately after production. O: The emulsified state is maintained, but slight separation (water separation) is observed on the surface. Δ: The emulsified state is not maintained, and the liquid is apparent on the surface. X: Separation of liquid and liquid mobilization are observed.

(Test Example 2: Evaluation after application)
Twenty sensory evaluation panels acclimated for 10 minutes under conditions of an air temperature of 30 ± 1 ° C. and a humidity of 55 to 65%, and sweated on the skin. Next, the emulsified antiperspirant cosmetic obtained in each Example and each Comparative Example under conditions of an air temperature of 23 ± 1 ° C. and a humidity of 55 to 65% was actually applied directly to the inner part of the forearm. The “drying” and “stickiness” after the minute were subjected to sensory evaluation according to the following evaluation criteria.

<Evaluation criteria for dryness>
◎: More than 16 out of 20 responded that there was no drying delay and excellent drying performance ○: 11 to 15 out of 20 responded that there was no drying delay and excellent drying performance △: Out of 20 responses 6 to 10 people answered that there was no slowness in drying and excellent drying characteristics x: 5 out of 20 people answered that there was no drying time and excellent drying characteristics

<Evaluation criteria for stickiness>
◎: More than 16 out of 20 have no sticky feeling and have a smooth skin condition ○: 11 to 15 of 20 persons have no sticky feeling and have a smooth skin condition △: Among 20 persons 6 to 10 people answered that there was no stickiness and the skin was smooth. ×: 5 out of 20 people answered that there was no stickiness and the skin was smooth.

(Test Example 3: Evaluation of antiperspirant effect)
By the same evaluation panel, sensory evaluation was performed according to the following evaluation criteria for “adhesion to skin” and “sustained antiperspirant effect” 5 hours after the evaluation of Test Example 2.

<Adhesion evaluation criteria>
◎: More than 16 out of 20 responded that the cosmetic has good adhesion to the skin ○: 11 to 15 out of 20 answered that the cosmetic has good adhesion to the skin Δ: 6 to 20 out of 20 10 respondents said that cosmetics had good adhesion to skin ×: 5 out of 20 respondents said cosmetics had good adhesion to skin

<Evaluation criteria for maintaining antiperspirant effect>
◎: More than 16 out of 20 responded that the antiperspirant effect persisted ○: 11-15 out of 20 responded that the antiperspirant effect persisted △: 6-10 out of 20 responded Reply that sweat effect is sustained ×: 5 or less of 20 respondents say that antiperspirant effect is sustained

(Test Example 4: Evaluation of washing off)
Using the same evaluation panel, after the test example 3 was evaluated, the coated part was rinsed with lukewarm water, and the wash-off from the fingertip and palm was subjected to sensory evaluation according to the following evaluation criteria.

<Evaluation criteria for beautiful skin>
◎: More than 16 out of 20 responded that they were excellent in washing off from the skin ○: 11-15 out of 20 responded that they were excellent in washing out from the skin △: 6-10 out of 20 responded from the skin Responds that it is excellent in washing off ×: 5 or less of 20 people answered that it is excellent in washing off from the skin

  From the results shown in Tables 1 to 4, the emulsified antiperspirant cosmetics obtained in each Example had excellent emulsion stability compared to those obtained in each Comparative Example, and were coated. Since it is excellent in quick-drying later, it can be seen that there is no stickiness even on sweaty skin, and the skin is smooth. Moreover, since it is excellent in the adhesiveness to skin, it turns out that the antiperspirant effect is maintained. Further, it can be seen that, even though the adhesion to the skin is good, the washing off from the skin is good at the time of washing.

  On the other hand, in Comparative Examples 1 to 5 that do not satisfy the essential constituents of the present invention, since the emulsion stability is inferior, the dryness is poor and the sticky feeling stands out, and the specific effects of the present invention can be sufficiently exhibited. I understand that I can't. Further, Comparative Examples 6 to 9 in which the component (B) in Example 1 was replaced with a nonionic surfactant other than the component (B) having the same HLB, and the component (C) in Example 1 were replaced with the component (B). In Comparative Example 10 replaced with a nonionic surfactant other than the component (B) having the same HLB, the emulsification stability is remarkably inferior, and separation occurs and cannot be used as an agent. It can be seen that it is not even possible to exert the effect of.

Claims (3)

(A) antiperspirant component, (B) glycerin fatty acid ester type nonionic surfactant having 2 to 8 HLB, (C) nonionic surfactant having 12 to 18 HLB, (D) higher alcohol, and (E) An emulsified antiperspirant cosmetic comprising silicone oil (E1) and / or fatty acid ester oil (E2),
The content of the component (B) is 2.5 to 5% by mass, the content of the component (C) is 2 to 8% by mass, the content of the component (D) is 6 to 10% by mass, ) Component content is 0.02-1% by mass,
The mass content ratio of the component (B) and the component (C) is (B) :( C) = 1: 1 to 1: 3 ,
The emulsified antiperspirant cosmetic , wherein the component (D) is a combination of cetyl alcohol and stearyl alcohol . The emulsified antiperspirant cosmetic according to claim 1, wherein the component (E1) is at least one selected from the group consisting of dimethyl silicone oil, methyl phenyl silicone oil and cyclic dimethyl silicone oil. The emulsified antiperspirant cosmetic according to claim 1 or 2 , further comprising (F) a bactericidal component.