CN118302144A - Water-in-oil type emulsified cosmetic - Google Patents

Abstract

Disclosed is a water-in-oil emulsion cosmetic which is excellent in usability, makeup appearance and stability during remelting. [ solution ] A water-in-oil type emulsified cosmetic comprising: an external oil phase in which an inorganic spherical powder is dispersed in an oily component; and an inner aqueous phase in which inorganic spherical powder is dispersed in an aqueous component, wherein the total content of the inorganic spherical powder in the outer oil phase and the inorganic spherical powder in the inner aqueous phase is 13 mass% or more and 35 mass% or less relative to the total mass of the water-in-oil emulsion cosmetic.

Description

Water-in-oil type emulsified cosmetic

Technical Field

The present invention relates to a water-in-oil type emulsified cosmetic. More specifically, the present invention relates to a water-in-oil emulsion cosmetic suitable as a cosmetic.

Background

Conventionally, silicone oils have been blended into water-in-oil emulsion cosmetics in order to improve the non-sticky feel and the dry feel. For example, in order to reduce the sticky feeling, patent document 1 proposes a solid water-in-oil type cosmetic comprising a dialkyl carbonate as a liquid oil, a specific solid oil as a solidifying agent, a silicone surfactant having a specific structural formula, and water in a specific ratio. Patent document 2 proposes a solid water-in-oil emulsion cosmetic containing silicone oil as liquid oil, solid oil, water, a surfactant, and non-porous silica as spherical powder.

Prior art literature

Patent literature

Patent document 1: japanese patent No. 4047512

Patent document 2: japanese patent laid-open No. 2006-282632

Disclosure of Invention

On the other hand, in recent years, in order to consider the environment, a silicon-free cosmetic is desired. However, when silicone oil is not blended in a water-in-oil emulsion cosmetic, there is a problem that the skin becomes sticky and dry.

In addition, if a large amount of porous silica is blended in the external oil phase in order to impart a dry feel during use, there is a problem of oil absorption. In the water-in-oil emulsion cosmetic described in patent document 2, non-porous silica is blended in either the external oil phase or the internal water phase, but there is still room for improvement from the viewpoint of usability (extended lightness and smoothness) of the cosmetic.

The present inventors have made intensive studies to solve the above problems, and as a result, have found that the above problems can be solved by blending an inorganic spherical powder into two phases, i.e., an external oil phase and an internal water phase, of a water-in-oil type emulsified cosmetic, and further adjusting the total content of the inorganic spherical powder in the external oil phase and the inorganic spherical powder in the internal water phase to be within a specific range relative to the total mass of the water-in-oil type emulsified cosmetic, and have completed the present invention.

According to the present invention, the following invention is provided.

[1] A water-in-oil emulsion cosmetic comprising:

an external oil phase in which an inorganic spherical powder is dispersed in an oily component; and

An internal aqueous phase of an inorganic spherical powder is dispersed in an aqueous component,

The total content of the inorganic spherical powder in the outer oil phase and the inorganic spherical powder in the inner water phase is 13 mass% or more and 35 mass% or less with respect to the total mass of the water-in-oil emulsion cosmetic.

[2] The water-in-oil emulsion cosmetic according to [1], wherein the inorganic spherical powder in the outer oil phase is a nonporous spherical powder.

[3] The water-in-oil emulsion cosmetic according to [1] or [2], wherein the inorganic spherical powder in the outer oil phase is silica.

[4] The water-in-oil emulsion cosmetic according to any one of [1] to [3], wherein the inorganic spherical powder in the inner aqueous phase is a porous spherical powder.

[5] The water-in-oil emulsion cosmetic according to any one of [1] to [4], wherein the inorganic spherical powder in the inner aqueous phase is silica.

[6] The water-in-oil emulsion cosmetic according to any one of [1] to [5], wherein the oily component comprises a wax component.

[7] The water-in-oil emulsion cosmetic according to any one of [1] to [6], wherein the water-in-oil emulsion cosmetic is a solid.

According to the present invention, a water-in-oil emulsified cosmetic excellent in usability (light and smooth feeling in extension), makeup (dry feel) and stability at the time of remelting can be provided.

Detailed Description

[ Water-in-oil type emulsion cosmetics ]

The water-in-oil emulsion cosmetic of the present invention comprises an outer oil phase in which an inorganic spherical powder is dispersed in an oily component and an inner water phase in which an inorganic spherical powder is dispersed in an aqueous component.

[ External oil phase ]

The external oil phase preferably contains a wax component as an oily component, and more preferably contains a liquid oil component. The outer oil phase may contain an oil-soluble ultraviolet absorber, a perfume, and the like as oily components.

(Wax component)

The wax component is not particularly limited, and conventionally known wax components can be used as materials for cosmetics. Examples of the wax component include: waxes such as beeswax, lanolin, carnauba wax, candelilla wax, sunflower seed wax, rice bran wax (Rice wax), spermaceti, jojoba seed oil, rice bran wax, montan wax, kapok wax, bayberry wax, shellac wax, sugarcane wax, isopropyl lanolate, hexyl laurate, hydrogenated lanolin, hard lanolin, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol ester, POE hydrogenated lanolin alcohol ether, hydrocarbons such as paraffin (straight chain hydrocarbon), microcrystalline wax (branched saturated hydrocarbon), ceresin, cranberry wax, fischer-tropsch wax (fish-tropsch wax), solid oils such as cocoa butter, coconut oil, horse oil, hydrogenated coconut oil, palm oil, beef tallow, mutton oil, hydrogenated castor oil, hydrogenated vegetable oil, and the like. Of these, 1 kind or 2 or more kinds may be used in combination.

The content of the wax component may be arbitrarily adjusted according to the purpose, and is preferably 1% by mass or more and 12% by mass or less, more preferably 2% by mass or more and 10% by mass or less, and still more preferably 3% by mass or more and 8% by mass or less, relative to the total mass of the water-in-oil emulsion cosmetic. When the content of the wax component is within the above range, the stability at the time of remelting of the water-in-oil emulsion cosmetic becomes more excellent.

(Liquid oil content)

The liquid oil is not particularly limited, and conventionally known liquid oil can be used as a material for cosmetics. Examples of the liquid oil include: liquid oils such as avocado oil, camellia oil, macadamia oil, mink oil, olive oil, castor oil, jojoba oil, triglycerin, glycerol tri (ethylhexanoate), liquid paraffin, squalane, paraffin, ceresin, squalene and other hydrocarbons, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, linoleic acid, linolenic acid and other higher fatty acids, lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, oleyl alcohol, monostearin, monopalmitin, cholesterol, phytosterol, isostearyl alcohol and other higher alcohols, isononyl isononanoate, isopropyl myristate, cetyl alcohol ethyl caproate, octyl dodecyl myristate, butyl stearate, decyl oleate, ethylene glycol di (ethylhexanoate), diisostearyl alcohol malate, trimethylolpropane tri (ethyl caproate), trimethylolpropane triisostearate, pentaerythritol tetra (ethyl caproate), glycerol tri (ethyl caproate), triisobutyl acetate, amyl acetate and the like.

The content of the liquid oil component may be arbitrarily adjusted according to the purpose, and is preferably 5% by mass or more and 50% by mass or less, more preferably 10% by mass or more and 45% by mass or less, and still more preferably 20% by mass or more and 40% by mass or less, relative to the total mass of the water-in-oil emulsified cosmetic. When the content of the liquid oil is within the above range, the usability and the makeup of the water-in-oil emulsion cosmetic become better.

The water-in-oil emulsion cosmetic of the present invention may contain silicone oil within a range that does not impair the effects of the present invention, and from the viewpoint of environmental consideration, it is preferable to reduce the content of silicone oil. The content of the silicone oil is preferably 3% by mass or less, more preferably 1% by mass or less, still more preferably 0.1% by mass or less, still more preferably 0.01% by mass or less, relative to the total mass of the water-in-oil emulsified cosmetic.

(Oil-soluble ultraviolet absorber)

Examples of the oil-soluble ultraviolet absorber include: benzoic acid ultraviolet absorbers such as p-aminobenzoic acid, anthranilic acid ultraviolet absorbers such as methyl anthranilate, salicylic acid ultraviolet absorbers such as octyl salicylate and phenyl salicylate, cinnamic acid ultraviolet absorbers such as ethylhexyl methoxycinnamate, isopropyl p-methoxycinnamate, octyl p-methoxycinnamate, di-p-methoxycinnamate glyceryl mono-2-ethylhexanoate, benzophenone ultraviolet absorbers such as 2, 4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-5-sulfobenzophenone, 2- (2 ' -hydroxy-5 ' -methylphenyl) benzotriazole, 4-t-butyl-4 ' -methoxybenzoylmethane, and the like.

[ Internal Water phase ]

The internal aqueous phase contains water as an aqueous component, preferably also contains a hydrophilic material. The hydrophilic material is not particularly limited, and conventionally known hydrophilic materials can be used as materials for cosmetics. Examples of the hydrophilic material include: humectant, water-soluble polymer, water-soluble agent, metal ion chelating agent, antioxidant, thickener, etc.

(Hydrophilic Material)

Examples of the humectant include: 1, 3-butanediol, polyethylene glycol, propylene glycol, dipropylene glycol, hexylene glycol, glycerol, diglycerol, xylitol, maltitol, maltose, D-mannitol, trehalose, erythritol, propylene glycol, glucose, polyoxyethylene methyl glucoside, etc.

Examples of the water-soluble polymer include: a plant polymer such as gum arabic, carrageenan, pectin, agar, quince seed (quince), starch, sodium alginate (brown algae extract), a microorganism polymer such as dextran, pullulanase polysaccharide, an animal polymer such as collagen, casein, gelatin, a starch polymer such as carboxymethyl starch and methyl hydroxypropyl starch, an alginic polymer such as sodium alginate, a vinyl polymer such as carboxyvinyl polymer (CARBOPOL, etc.), a polyoxyethylene polymer, a polyoxyethylene polyoxypropylene copolymer polymer, an acrylic polymer such as sodium polyacrylate, polyacrylamide, a bentonite, aluminum magnesium silicate, an inorganic water-soluble polymer such as laponite, and the like.

Examples of the water-soluble drug include: vitamins such as vitamin a, retinol palmitate, inositol, pyridoxine hydrochloride, benzyl nicotinate, nicotinamide, dl-alpha-tocopherol nicotinate, magnesium ascorbyl phosphate, ascorbyl 2-glucoside, vitamin D2 (ergocalciferol), potassium ascorbyl phosphate, dl-alpha-tocopherol acetate, pantothenic acid, biotin, and the like, and anti-inflammatory agents such as allantoin, azulene, and the like; whitening agents such as arbutin; astringents such as zinc oxide and tannic acid; sulfur, lysozyme chloride, pyridoxine hydrochloride, γ -oryzanol, and the like.

Examples of the metal ion chelating agent include: sodium ethylenediamine tetraacetate, sodium metaphosphate, phosphoric acid and the like.

Examples of the antioxidant include: ascorbic acid, alpha-tocopherol, dibutyl hydroxy toluene, butyl hydroxy anisole, and the like.

Examples of the thickener include: polysaccharides, synthetic polymer compounds, clay minerals, and the like.

The cosmetic of the present invention can impart excellent feel in use and maintain an appropriate hardness by containing an appropriate amount of water. Specifically, the water content is preferably 20% by mass or more and 55% by mass or less, more preferably 30% by mass or more and 50% by mass or less, relative to the total mass of the cosmetic.

(Inorganic spherical powder)

The cosmetic of the present invention contains inorganic spherical powder in two phases, an external oil phase and an internal water phase. In the present invention, the inorganic spherical powder in the outer oil phase is preferably a non-porous spherical powder, and the inorganic spherical powder in the inner water phase is preferably a non-porous spherical powder. In a particularly preferred embodiment, the absorption of oil can be suppressed by using a non-porous inorganic spherical powder as the inorganic spherical powder in the outer oil phase. In addition, by using porous inorganic spherical powder as the inorganic spherical powder in the internal aqueous phase, the dry feel after use can be improved.

The inorganic spherical powder is not particularly limited, and conventionally known inorganic spherical powder can be used as a cosmetic material. Examples of the inorganic spherical powder include silica, talc, kaolin, mica, sericite (sericite), muscovite, biotite, phlogopite, synthetic mica, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, metal tungstate, magnesium, zeolite, barium sulfate, calcined calcium sulfate, calcined gypsum, calcium phosphate, fluoroapatite, hydroxyapatite, and ceramic powder. Of these, 1 kind or 2 or more kinds may be used in combination. Among them, silica is preferably used. These inorganic spherical powders may be used as they are in the case of hydrophilicity, or may be subjected to a conventionally known hydrophobizing treatment.

The total content of the inorganic spherical powder in the outer oil phase and the inorganic spherical powder in the inner water phase is 13 mass% or more and 35 mass% or less, preferably 15 mass% or more and 32 mass% or less, and more preferably 17 mass% or more and 30 mass% or less, relative to the total mass of the water-in-oil emulsified cosmetic. If the total content of the inorganic spherical powder in the outer oil phase and the inorganic spherical powder in the inner water phase is within the above-mentioned numerical range, a water-in-oil emulsified cosmetic excellent in usability, makeup and stability upon remelting can be obtained.

The water-in-oil emulsion cosmetic of the present invention may contain organic fine powder (micro plastic beads) within a range that does not impair the effects of the present invention, but from the viewpoint of environmental protection, it is preferable to reduce the content of the organic fine powder. The content of the organic fine powder is preferably 3% by mass or less, more preferably 1% by mass or less, further preferably 0.1% by mass or less, further more preferably 0.01% by mass or less, relative to the total mass of the water-in-oil emulsified cosmetic.

(Pigment)

The cosmetic of the present invention may contain a conventionally known pigment as a cosmetic material in at least one of the outer oil phase and the inner water phase. Examples of the pigment include inorganic white pigments such as titanium dioxide and zinc oxide, inorganic red pigments such as iron oxides (iron oxide red) and iron titanate; inorganic brown pigments such as gamma-iron oxide; inorganic yellow pigments such as iron oxide yellow and loess, inorganic black pigments such as iron oxide black, carbon and low-order titanium dioxide, inorganic violet pigments such as mango violet and cobalt violet, inorganic green pigments such as chromium oxide hydroxide and cobalt titanate, inorganic blue pigments such as ultramarine and Prussian blue, titanium dioxide coated mica, titanium dioxide coated bismuth oxychloride, titanium dioxide coated talc, colored titanium dioxide coated mica, pearlescent pigments such as bismuth oxychloride and ichthyosis foil, metal powder pigments such as aluminum powder and copper powder, and natural pigments such as red 202, red 205, red 220, red 228, red 405, orange 203, orange 204, yellow 205, yellow 401 and blue 404, organic pigments such as red 3, red 104, red 227, red 401, orange 205, yellow 4, yellow 202, green 3 and blue 1, lake pigments such as zirconium lake, barium lake and aluminum lake, and natural pigments such as chlorophyll and beta-carotene, and the like.

(Emulsifier)

In the present invention, an emulsifier for emulsifying the inner aqueous phase into the outer oil phase may be blended. The emulsifier is not particularly limited as long as it is a conventionally known emulsifier that can be blended in a water-in-oil emulsion composition. Examples of the emulsifier include: sorbitan fatty acid esters such as sorbitan monolaurate, sorbitan monooleate, sorbitan monoisostearate, sorbitan tristearate, and sorbitan sesquiisostearate; glycerol fatty acid esters such as glycerol monostearate, glycerol monooleate, glycerol isostearate, diglycerol diisostearate, and pentaisostearate; polyoxyethylene hydrogenated castor oil such as POE (5), POE (7.5), POE (10) hydrogenated castor oil; dimerized hydroxystearates: high molecular weight lipophilic active agents such as polyglycerol-2 dipolyhydroxystearate and PEG-30 dipolyhydroxystearate. Of these, 1 kind or 2 or more kinds may be used in combination.

[ Oil-in-water type solid emulsion cosmetic ]

The term "solid" or "solid-like" in the present invention is understood to mean a form or state which is generally used in the cosmetic field, and for example, can be defined such that the composition as a whole does not exhibit fluidity at a temperature of 50 ℃ or less and does not exhibit significant deformation under normal storage conditions. The water-in-oil emulsion cosmetic of the present invention is preferably used for a powder puff and the like because it has a suitable hardness and is easily and uniformly spread when applied to the skin.

(Use)

The water-in-oil emulsion cosmetic of the present invention can be suitably used as a makeup cosmetic. For example, it is preferable to provide it in the form of a pre-makeup foundation, white powder, blush, lipstick, mascara, eye shadow, eyeliner, or the like. Particularly preferably, the cosmetic after molding is contained in a small container. The water-in-oil type emulsified solid cosmetic of the present invention has the following characteristics: has appropriate hardness, is easy to be used for powder puff and the like, and is easy to be evenly spread when applied to skin.

Examples

The present invention will be specifically described with reference to the following examples, but the present invention is not limited to these examples. Unless otherwise specified, the amount is expressed as mass%.

Examples 1 to 3 and comparative examples 1 to 6

< Preparation example of Water-in-oil emulsion cosmetic >

An external oil phase in which an inorganic spherical powder was dispersed in an oily component and an internal water phase in which an inorganic spherical powder was dispersed in an aqueous component were prepared by blending as shown in table 1, and then both were mixed to prepare a solid water-in-oil emulsion cosmetic. However, in comparative examples 2 and 4, oil absorption or water absorption is largely generated due to porous silica, and it is difficult to complete the water-in-oil type emulsion cosmetics. In table 1, the blending ratio of each component is mass%.

< Evaluation of Water-in-oil emulsion cosmetics >

The water-in-oil emulsified cosmetic prepared as described above was evaluated for usability, makeup, and stability at the time of remelting, according to the following criteria. The evaluation results are shown in table 1. In comparative examples 2 and 4, the evaluation was not performed, and thus the result was indicated by "-" in table 1.

[ Usability ]

The women aged 30 to 40 were trained in sensory evaluation, and 3 panelists who were able to evaluate on a fixed basis were selected. The panelists 3 were able to wipe each cosmetic with a puff and evaluate the usability (lightness and smoothness of extension) of the cosmetic when applied to the face according to the following criteria.

< Evaluation criterion >

A: the extension is very light and the smoothness is very excellent.

B: the extension is light and the smoothness is excellent.

C: the extension is thick and heavy, and the smoothness is poor.

D: the expansion is heavy and the smoothness is very poor.

[ Dressing case ]

The women aged 30 to 40 were trained in sensory evaluation, and 3 panelists who were able to evaluate on a fixed basis were selected. The 3 panelists used powder puffs to wipe the respective cosmetics, and evaluated the makeup (dry feel) when applied to the face according to the following criteria.

< Evaluation criterion >

A: has no sticky and greasy feeling and excellent dry and comfortable feeling.

B: almost no sticky and greasy feeling and excellent dry and comfortable feeling.

C: there is less sticky and dry feel.

D: has sticky and greasy feel and poor dry feel.

[ Stability at remelting ]

Each cosmetic was melted, and whether or not separation was observed when the cosmetic was filled in a container was visually checked, and the evaluation was performed according to the following criteria.

< Evaluation criterion >

A: no separation of cosmetics was confirmed.

B: the separation of the cosmetics was slightly confirmed, but there was no problem in practical use.

C: the separation of cosmetics occurs somewhat.

D: separation of cosmetics occurs.

TABLE 1

From the above results, it was found that the water-in-oil emulsion cosmetic of the present invention is excellent in usability, makeup, and stability upon remelting. Further, considering the results of the comparative example together, it is found that the water-in-oil emulsion cosmetic of the present invention has excellent effects by blending the inorganic spherical powder into both the outer oil phase and the inner water phase and adjusting the total content of the inorganic spherical powder in the outer oil phase and the inorganic spherical powder in the inner water phase to a specific range with respect to the total mass of the water-in-oil emulsion cosmetic.

Claims (7)

1. A water-in-oil emulsion cosmetic comprising:

an external oil phase in which an inorganic spherical powder is dispersed in an oily component; and

An internal aqueous phase of an inorganic spherical powder is dispersed in an aqueous component,

The total content of the inorganic spherical powder in the outer oil phase and the inorganic spherical powder in the inner water phase is 13 mass% or more and 35 mass% or less with respect to the total mass of the water-in-oil emulsion cosmetic.

2. The water-in-oil emulsion cosmetic according to claim 1, wherein the inorganic spherical powder in the outer oil phase is a non-porous spherical powder.

3. The water-in-oil emulsion cosmetic according to claim 1 or 2, wherein the inorganic spherical powder in the outer oil phase is silica.

4. A water-in-oil emulsion cosmetic according to any one of claims 1 to 3, wherein the inorganic spherical powder in the inner aqueous phase is a porous spherical powder.

5. The water-in-oil emulsion cosmetic according to any one of claims 1 to 4, wherein the inorganic spherical powder in the inner aqueous phase is silica.

6. The water-in-oil emulsion cosmetic according to any one of claims 1 to 5, wherein the oily component comprises a wax component.

7. The water-in-oil emulsion cosmetic according to any one of claims 1 to 6, wherein the water-in-oil emulsion cosmetic is a solid.