JP2002179525A - Oily cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an oily cosmetic having both excellent preservation stability and antiseptic properties. SOLUTION: This oily cosmetic contains (A) 60-99 wt.% oil component, (B) 0.1-5 wt.% dihydric alcohol and (C) 5-35 wt.% oil-absorbing powder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention has excellent storage stability,
The present invention relates to an oily cosmetic having a high preservative effect.

[0002]

2. Description of the Related Art Oil-based cosmetics such as lipsticks are applied directly to lips or the like using a red brush or tip when used, so that contamination by microorganisms and bacteria is inevitable. Such contamination causes deterioration in quality such as unpleasant odor and deterioration, and not only lowers the commercial value but also may harm the human body. Therefore, preservation of these oily cosmetics is an important issue. It is.

[0003] However, it is difficult to stably compound a water-soluble preservative such as sodium dehydroacetate or polyhydric alcohol with an oil-based cosmetic. It is limited to benzoic acid esters and may not have sufficient preservative properties.

Examples of cosmetics containing such polyhydric alcohols as water-soluble preservatives include pack cosmetics (JP-A-6-247838) and solid powder cosmetics (JP-A-Heisei 1-24).
No. 0-7519). On the other hand, solid cosmetics in which a polyhydric alcohol is adsorbed on spherical silica are expected to have a moisturizing effect of the polyhydric alcohol (JP-A-8-165219).
), Oil-based cosmetics such as lipstick, mascara, etc., in which a polyhydric alcohol is blended with water to form an emulsified system (JP-A-53-1)
Nos. 27841 and 54-49337, JP-A-10-2
No. 79433) and the like.

However, all of these cosmetics contain not only polyhydric alcohol but also water, which may cause bacteria to multiply in the cosmetic, resulting in an insufficient preservative effect. Has not been resolved.

As an example of blending a polyhydric alcohol with a water-free oil-based cosmetic, a technique of dispersing the polyhydric alcohol into fine droplets in a system and solidifying it (Japanese Patent Laid-Open No. 5-31)
No. 0528). However, this technique has very special production conditions and is physically mixed with a water-soluble polyhydric alcohol and an oil component which are originally insoluble in each other, so that storage stability is not sufficient. There's a problem.

[0007]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an oil-based cosmetic which comprises a polyhydric alcohol stably and is substantially non-aqueous.

[0008]

Means for Solving the Problems The present inventor has proposed a combination of a dihydric alcohol, which has a particularly excellent preservative effect among polyhydric alcohols and is more difficult to mix with an oil component, and an oil-absorbing powder. It has been found that, when blended in a large amount of oil, an oily cosmetic having good preservability and stability can be obtained.

That is, the present invention provides the following component (A):
(B) and (C): an oily cosmetic containing (A) an oil content of 60 to 99% by weight, (B) 0.1 to 5% by weight of a dihydric alcohol, and (C) an oil absorbing powder of 5 to 35% by weight. Is provided.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The oil component [component (A)] used in the present invention includes carnauba wax, candelilla wax, ceresin, microcrystalline wax, a mixture of polyethylene wax and microcrystalline wax, solid paraffin, etc. ); Hydrocarbon oils such as squalane, liquid paraffin, vaseline, and heavy liquid isoparaffin; higher fatty acids such as myristic acid, palmitic acid, stearic acid, isostearic acid, and behenic acid; cetyl alcohol, stearyl alcohol, oleyl alcohol, and butyl alcohol. Higher alcohols;
2-octyldodecyl myristate, glyceride trioctanoate, pentaerythritol tetraoctanoate, glyceride triisostearate, glyceride diisostearate, isopropyl myristate, myristyl myristate, glyceride trioleate, diisostearyl malate, isotridecyl isononanoate, isostearin Isopropyl acid, cholesteryl isostearate,
Ester oils such as dextrin palmitate and N-lauroyl-glutamic acid ester; oils and fats such as liquid lanolin, adsorptive purified lanolin and castor oil; dimethylpolysiloxane, methylphenylpolysiloxane, highly polymerized gum-like dimethylpolysiloxane, and polyether-modified silicone And silicone-modified oils such as amino-modified silicones and highly polymerized gum-like amino-modified silicones; and fluorine-based oils such as perfluoropolyethers, perfluorocarbons, and fluorine-modified silicones (above, liquid oils).

The content of the component (A) is from 60 to 99% by weight (hereinafter simply referred to as%), especially from 70 to 99% by weight of the total amount of the composition.
95% by weight is preferred. When the content of the component (A) is 60% or more, it is preferred that the oily cosmetic composition of the present invention does not give a powdery finish when the cosmetic is applied. When waxes are used among the above oil components, the content of waxes is preferably at least 4%, particularly preferably at least 7%, of the total amount of the composition.

As the dihydric alcohol [component (B)],
1,3-butylene glycol, 1,2
-Pentanediol, propylene glycol, dipropylene glycol are preferred, and also skin irritants,
From the viewpoints of taste and storage stability, 1,3-butylene glycol is particularly preferred.

The content of the component (B) is from 0.1 to 5%, especially from 0.5 to 4.5%, of the total amount of the composition from the viewpoint of obtaining a sufficient preservative effect and ensuring stability. preferable.

As the oil-absorbing powder [component (C)], from the viewpoint of the effect of stably blending a dihydric alcohol and the feeling of use,
Oil absorption 100-400mL / 100g, especially 120-25
0 mL / 100 g of inorganic powder is preferred. Here, the oil absorption of the powder can be measured according to JIS K 5101. As such an oil-absorbing powder, silicic anhydride, aluminum oxide, and anhydrous aluminum silicate are particularly preferable in view of the effect of stably blending a dihydric alcohol and the effect on the color tone of the cosmetic.

The average particle size of the component (C) is preferably from 3 to 16 μm, particularly preferably from 3 to 6 μm, from the viewpoint of the usability (for preventing bulkiness) and the effect of stably blending the dihydric alcohol. Here, the average particle diameter is a value measured by a Coulter counter.

Preferred commercial products of component (C) include, for example, Sunsphere L-31, L-51 and L-12.
2, H-31, H-32, H-51, H-5
2, H-121 and H-122 (Asahi Glass), and the like.

The content of the component (C) is preferably from 5 to 35%, particularly preferably from 5 to 25%, from the viewpoint of the effect of stably blending the dihydric alcohol and the feeling of use (prevention of bulkiness). Moreover, it is preferable that the said component (C) should be 50-100% with respect to the whole powder contained in the oily cosmetic of this invention.

[0018] The cosmetic powder other than the component (C) blended in the oily cosmetic of the present invention includes crystalline cellulose, silicone resin, polystyrene, cellulose acetate powder, titanium oxide, talc, mica, sericite, Kaolin, zinc stearate, zinc oxide, mica titanium, iron oxide-treated mica titanium, nylon powder, silk powder, lauroyl lysine, barium sulfate, etc. ,
Coloring pigments such as carbon black. The total amount of the powder in the oily cosmetic of the present invention is preferably 5 to 35%, particularly preferably 5 to 25%, from the viewpoints of feeling of use and prevention of bulkiness.

The oily cosmetic of the present invention may contain, in addition to the dihydric alcohol, oil-soluble preservatives such as paraoxybenzoic acid esters such as ethyl paraoxybenzoate and propyl paraoxybenzoate, and phenoxyethanol. A water-soluble solid antiseptic component having an antiseptic action may be added. In the oil-based cosmetic of the present invention, a water-soluble solid preservative having an antiseptic action, which could not be stably added to conventional oil-based cosmetics, can be compounded, so that the action of both the dihydric alcohol and the water-soluble solid preservative can be achieved. By
The antiseptic effect can be further improved. Examples of the water-soluble solid component include sodium dehydroacetate, sodium benzoate, sorbate, propionate, degraded pectin, polylysine and the like. The content of the water-soluble solid preservative component in the total amount of the composition is 0.01 to 3%, particularly 0.1%.
~ 1% is preferred.

The oily cosmetic composition of the present invention further includes, for example, a surfactant, an ultraviolet ray protective agent, a pH adjuster, an antioxidant, a chelating agent, a thickener, a gelling agent, a film forming agent, a polymer compound, and a fragrance. , Dyes and other chemicals.

The oily cosmetic of the present invention can be produced by mixing the respective components in an arbitrary order.
The oil-based cosmetic base containing the powder is preferably mixed with an oil-absorbing powder, and then mixed with a dihydric alcohol. The oily cosmetic of the present invention is a semi-solid cosmetic that can be filled into a container at room temperature, or a solid cosmetic obtained by heating, dissolving, pouring into a medium dish or the like, and solidifying by cooling. , Lip balm, foundation, blusher, eye shadow and the like. The oily cosmetic of the present invention is substantially non-aqueous,
The water content is preferably 0.5% or less.

[0022]

EXAMPLES Examples 1-4 and Comparative Examples 1-3 Oily cosmetics (pasty lipsticks) having the compositions shown in Tables 1 and 2 were produced, and their storage stability and preservative properties were evaluated. The results are shown in Tables 1 and 2.

(Production method) The oil component (A), paraoxybenzoic acid ester, and phenoxyethanol were heated and mixed at 80 ° C to dissolve uniformly, and the mixture was allowed to cool to room temperature. To this, the component (C) and another powder component (lauroyl lysine) were added at room temperature, and after sufficiently stirring and mixing, the component (B) was further added and stirred and mixed. Finally, after the pigment was added and sufficiently stirred and mixed, the obtained paste lipstick was filled in a cylindrical transparent plastic container. In addition, water-soluble components (citric acid,
Sodium dehydroacetate) was previously dissolved in component (B) and added.

(Storage stability) The thus obtained cylindrical transparent plastic container filled with the lipstick was stored for 2 weeks at each temperature atmosphere (5 ° C, room temperature, 30 ° C, 40 ° C). The stability was evaluated according to the following criteria. Evaluation ：: No remarkable change was observed in appearance. ×: Separation of oil was observed.

(Preservative) The lipstick is filled in a cylindrical container equipped with a screw-type red brush, and is used at least once a day by a professional panel of 20 people for one month for a continuous use test. The lipstick is applied to the lips, and the red brush is returned to the container without wiping. The red brush is stored while immersed in the lipstick composition in the container.) When putrid odor was generated from three or more samples by one month, the evaluation was evaluated as x. If the putrefaction odor does not occur by one month, or if the putrefaction odor occurs from two or less samples, the lipstick composition is sampled at one month and two weeks later, and subjected to a standard method. A culture test was performed and the number of bacteria was counted. The sample in which the bacteria in the sample tended to die was evaluated as ○, and the sample in which the bacteria tended to grow was evaluated as △.

[0026]

[Table 1]

[0027]

[Table 2]

[0028]

According to the present invention, an oily cosmetic having both excellent storage stability and preservability can be obtained.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C083 AA122 AB172 AC012 AC022 AC111 AC121 AC122 AC172 AC302 AC352 AC372 AC482 AC662 AD041 AD242 AD492 AD512 BB13 BB21 BB23 BB48 CC13 DD22 DD30 EE01 EE03 EE07 FF05 FF06

Claims (4)

[Claims] 1. The following components (A), (B) and (C): (A) 60 to 99% by weight of oil, (B) 0.1 to 5% by weight of dihydric alcohol, and (C) oil-absorbing powder. An oily cosmetic containing 5-35% by weight of a body. 2. The oily cosmetic according to claim 1, wherein the component (B) is selected from 1,3-butylene glycol, 1,2-pentanediol, propylene glycol and dipropylene glycol. 3. Component (C) having an oil absorption of 100 to 400 mL
The oily cosmetic according to claim 1 or 2, which is an inorganic powder of 100 g. 4. The oil-based cosmetic according to claim 1, further comprising a water-soluble solid preservative component.