JP2003292419A - Smooth gel-like cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic expressing low irritancy despite having corneum-removing effect. <P>SOLUTION: The smooth gel-like cosmetic is obtained by incorporating a gel-like cosmetic containing 60-90 wt.% of a polyhydric alcohol with one or more silicones selected preferably from dimethicone, femethicone, cyclomethicone, amodimethicone, polyether-modified methylpolysiloxane, modacrylic methylpolysiloxane and crosslinked methylpolysiloxane. Another preferable component is granules prepared by granulating powder of (poly) glycerol or polyethylene. This cosmetic is preferable as a cosmetic for scrubbing use. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a cosmetic, and more particularly to a cosmetic containing a granulated product, which is suitable as a gel cosmetic.

[0002]

2. Description of the Related Art Scrub cosmetics are cosmetics for removing old stratum corneum and making the skin beautiful. To remove stratum corneum, scrub powders such as silica, seaweed, etc. It contains plant pieces, crystalline cellulose, etc. That is, cosmetics that scrape off the old stratum corneum by rubbing on the skin with such relatively large particles are collectively called scrub cosmetics. For this reason, in scrub cosmetics, friction between the skin and the particles during use is unavoidable. The development of escape technology was desired.

On the other hand, it is already known that silicones have a function of remarkably reducing the above-mentioned friction coefficient in rubbing between two substances having a large friction, but such a friction coefficient is usually known. As a result, the change in mutual structure between the two substances such as surface peeling caused by friction decreases. Therefore, like gel-like cosmetics, in the cosmetics for removing the stratum corneum by friction between the skin of the face and fingers through the cosmetics, the friction coefficient is reduced by the presence of silicone or the like. However, it is considered that the substantial effect of cosmetics is also impaired, and no attempt has been made to incorporate silicone into gel cosmetics.

On the other hand, the technique of incorporating a granulated product into cosmetics is a known technique, and it is not possible to granulate powders of different colors into granules and to incorporate the granules into the cosmetics. That was already done. In such cosmetics, it is known that the granules disintegrate during use and other powders inside the granules appear, resulting in a change in the cosmetic finish.
However, it has not been known at all to include a granulated product in a gel cosmetic along with urea, α-hydroxy acid, or the like, or granulate a polymer into a cosmetic.
Therefore, it has not been known at all that a gel cosmetic containing such urea, α-hydroxy acid or a salt thereof, and a granulated product is excellent in the action of removing the stratum corneum but has low irritation.

On the other hand, 60 to 90% by weight of polyhydric alcohol
A gel cosmetic containing, characterized in that it contains a silicone, the gel cosmetic was not known, further gel cosmetic containing disintegrating particles is not known, Therefore, it has not been known at all that the cosmetic having such a constitution has excellent safety, even though it has an excellent scrubbing effect.

[0006]

The present invention has been made under such circumstances, and it is an object of the present invention to provide a cosmetic having a horny layer removing effect and a low irritation.

[0007]

In view of such a situation, the present inventors sought a cosmetic having a horny layer removing effect, but a low irritation expression, and as a result of earnest research efforts, as a result, a polyhydric alcohol was obtained. The present invention has been completed by discovering such characteristics in a gel cosmetic composition containing 60 to 90% by weight of silicone, which is characterized by containing silicone. That is, the present invention relates to the techniques described below. (1) A gel cosmetic containing 60 to 90% by weight of a polyhydric alcohol, which contains silicone. (2) The silicone is one or more selected from dimethicone, femethicone, cyclomethicone, amodimethicone, polyether-modified methylpolysiloxane, acryl-modified methylpolysiloxane, and crosslinkable methylpolysiloxane. The gel cosmetic according to (1). (3) In the constitution of the polyhydric alcohol, the proportion of glycerin in the polyhydric alcohol is 90% by weight or more, and the gel cosmetic according to (1) or (2). (4) Further characterized by containing disintegrating particles,
The gel cosmetic according to any one of (1) to (3). (5) For scrubbing, (1) to
(4) The gel cosmetic according to any one of items. Hereinafter, the present invention will be described in more detail.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION (1) Polyhydric alcohol which is an essential component of the gel cosmetic composition of the present invention The gel cosmetic composition of the present invention comprises 60 to 9 relative to the total amount of the cosmetic composition.
It is characterized in that it contains 0% by weight, more preferably 70 to 90% by weight of a polyhydric alcohol. As such polyhydric alcohol, 1,3-butanediol, propylene glycol, glycerin, dipropylene glycol, diglycerin, isoprene glycol, 1,2-pentanediol, etc. can be preferably exemplified, and these contain only one kind. It is also possible to include two or more kinds in combination. In a particularly preferable form, the proportion of glycerin in the constitution of polyhydric alcohol is 90% or more based on the total amount of polyhydric alcohol, and more preferably 9
It is 2% or more. This is because if the proportion of glycerin in the polyhydric alcohol is too low, the solubility of silicone, which is an essential component described below, becomes unfavorable.

(2) Silicone which is an essential component of the gel cosmetic of the present invention The gel cosmetic of the present invention is characterized by containing silicone as an essential component. As such a silicone, any silicone that is usually used in cosmetics can be used without particular limitation. For example, dimethicone,
One or more selected from femethicone, cyclomethicone, amodimethicone, polyether-modified methylpolysiloxane, acryl-modified methylpolysiloxane and crosslinkable methylpolysiloxane can be preferably exemplified.
The silicone as an essential component is 1 atm, 25
It is necessary to be a liquid (exhibiting fluidity) under the condition of ° C. Among these, dimethicone is particularly preferable, and those containing low viscosity (20 centistokes or less) can be particularly preferably exemplified. This is because the friction coefficient may not be reduced unless it is a liquid. Such silicone may contain only one kind, or may contain two or more kinds in combination. The total content of such silicones is preferably 0.1 to 10% by weight, more preferably 0.5 to 5% by weight, based on the total amount of the cosmetic. This is because if it is too large, the solubility may be impaired, and if it is too small, the effect may not be exhibited.

(3) Disintegrating particles which are a preferred component of the cosmetic of the present invention The cosmetic of the present invention is characterized by containing disintegrating particles as a preferred component. The disintegrating particles referred to in the cosmetics of the present invention means particles that easily disintegrate with a small stress, and as a slight stress, a degree of rubbing with two fingers can be preferably exemplified. As such particles, granulated products obtained by granulating fine particles in the presence of a binder can be preferably exemplified. Other than the granulated product, a molded / crushed product obtained by crushing a molded product molded under loose binding conditions can be preferably exemplified. Of these, granulated products are particularly preferable. Granulation may be carried out according to a usual method, for example, a method of putting in a mold with a binder such as aluminum stearate and pressure molding, kneading with a volatile medium such as water, and then removing the mold, Examples thereof include a method of extrusion granulation and a method of spraying an aqueous solution of a binder such as hydroxypropylmethyl cellulose while stirring with a Grad granulator or the like. Further, if the substances themselves are mutually adherent and are easily deformable, they can be granulated without a binder to obtain granules. As an index of softness, a pencil hardness of H is preferably such that the surface is scratched. Such materials include polyethylene and silicone elastomer (1
Preferable examples are solid or rubbery at atmospheric pressure and 25 ° C. In addition to the above-mentioned polyethylene and silicone elastomer, polymers such as acrylic resin, polypropylene resin, polyethylene terephthalate resin, crystalline cellulose, lactose, starch and the like can be preferably exemplified as components for forming such a granulated product. Of these, preferred are polymer granules, especially polyethylene granules. Among the polyethylene granules, a binder-free granule is particularly preferable. In the gel cosmetic of the present invention, such a granulated product has a function as a scrubbing agent. In order to exhibit such a function, it is preferable to contain one kind or two or more kinds selected from the above-mentioned granulated material in a total amount of 5 to 30% by weight, and 10 to 20% by weight based on the total amount of the cosmetic. More preferably.

(Production Example 1) A granulated product was produced according to the following procedure. That is, the average particle size of 30
Charge micron polyethylene powder and rotate at high speed for 20
The mixture was agitated for minutes, and 10-mesh-pass and 50-mesh-on granules were collected to obtain granule 1.

(Production Example 2) A granulated product was produced according to the following procedure. That is, the average particle size of 50
A micronized silicone elastomer powder was charged and stirred at high speed for 20 minutes, and 10-mesh pass, 50-mesh-on granules were collected to obtain granules 2.

(Production Example 3) A granulated product was produced according to the following formulation. That is, the ingredients were charged in a glad granulator, and 20 parts by weight of a 20% ethanol aqueous solution was sprayed and granulated while mixing at a medium-low speed. The granulated product was blow-dried at 40 ° C. for 48 hours, and the 10-mesh pass, 50-mesh on granulated product was collected to obtain Granulated Product 3. Crystalline cellulose 95 parts by weight Hydroxypropyl methylcellulose 5 parts by weight

(Production Example 4) A granulated product was produced according to the following formulation. That is, the ingredients were charged in a glad granulator, and 20 parts by weight of a 20% ethanol aqueous solution was sprayed and granulated while mixing at a medium-low speed. The granulated product was blow-dried at 40 ° C. for 48 hours, and the 10-mesh pass, 50-mesh on granulated product was collected to obtain Granulated Product 3. Crystalline cellulose 95 parts by weight Hydroxypropyl methylcellulose 5 parts by weight

(4) Gel cosmetic of the present invention The gel cosmetic of the present invention is characterized by containing the above essential components and preferred components. The gel cosmetic of the present invention is preferable as a cosmetic for scrubbing. This is because it has an excellent scrubbing effect even though the coefficient of friction is small. The cosmetic of the present invention can be applied without particular limitation as long as it is a kind known as a cosmetic for scrubs, and for example, a cosmetic for scrubs for face and face, skin preservation for body care, Preferable examples include cosmetics for scrubbing. Particularly preferred are cosmetics for aesthetic use, and especially cosmetics for aesthetics that are applied to the body (for body care) are preferred. This is because in esthetics, the scrubbing action produces a pleasant relaxation by the frictional stimulus, and at the same time, the waste products that cause fatigue can be promptly released by promoting blood flow, thereby enhancing metabolism. is there. By using the granulated product as a scrubbing agent that exhibits such a scrubbing action, it is possible to suppress the onset of stimulation while expressing the scrubbing action. The cosmetic of the present invention may contain, in addition to the above-mentioned essential components, optional components usually used in cosmetics. Such optional components include, for example, hydrocarbons such as petrolatum and microcrystalline wax, esters such as jojoba oil and cetyl isooctanoate, triglycerides such as olive oil, higher alcohols such as octadecyl alcohol and oleyl alcohol, Polyhydric alcohols such as glycerin, 1,3-butanediol, 1,2-pentanediol, isoprene glycol and dipropylene glycol,
Examples thereof include nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, thickeners such as ethanol and carbopol, antiseptics, ultraviolet absorbers and antioxidants. In a particularly preferred embodiment, the water content is 1
The composition is to be 0% by weight or less, and more preferably 3% by weight or less. This constitutes an exothermic dosage form together with containing 60 to 90% by weight of the above-mentioned essential constituent polyhydric alcohol. This is because by taking such a heat-generating formulation, it is possible to suppress the inspiring stimulus caused by the cosmetic material at the time of application and enhance the relaxation effect and the like.
As the nonionic surfactant, it is preferable to use polyoxybutene polyglyceryl alkyl ether, and it is preferable not to use the polyoxyethylene addition type nonionic surfactant. This is because polyoxybutene polyglyceryl alkyl ether is used, but transient irritation is less likely to be felt, and a higher quality aesthetic effect can be obtained. Further, it is also preferable to contain an emollient such as urea, hydroxycarboxylic acid such as lactic acid, glycolic acid or the like from the viewpoint of removing old keratin. This can further enhance the scrubbing effect. The preferable content of such an emollient is 0.1 to 3% by weight. The cosmetic of the present invention can be produced by treating such an essential component and an optional component according to a conventional method.

[0016]

EXAMPLES The present invention will be described in more detail below with reference to examples, but it goes without saying that the present invention is not limited to these examples.

<Example 1> The cosmetic of the present invention was prepared according to the following formulation. That is, the ingredients of a and b are 80 ℃
The mixture was heated to 1, and gradually added to A to neutralize, and the mixture was stirred and cooled to obtain gel cosmetic 1. Glycerin 76 parts by weight Diglycerin 0.5 parts by weight 1,3-butanediol 0.5 parts by weight Behenyl alcohol 0.1 parts by weight Cetyl isooctanoate 1.5 parts by weight Dimethicone (100CS) 1 part by weight Dimethicone (10CS) 1 part by weight Granulated product 1 14 parts by weight Urea 1 part by weight Glycolic acid 0.1 parts by weight Carboxyvinyl polymer 0.1 parts by weight "Sunfresh ST100" 0.2 parts by weight Dimethyl distearylamine acrylate polymer 0.1 parts by weight Methylsiloxane Reticulated polymer 1.5 parts by weight Stearic acid monoglyceride 0.1 parts by weight Hyglyol S26 * 1) 0.8 parts by weight Ro water 1.4 parts by weight Triethanolamine 0.1 parts by weight *) Hyglyol S26: polyoxy Butene polyglycerin stearyl ether Note 1) Dimethicone (100 S), dimethicone (10C
All of S) are liquids at 1 atmosphere and 25 ° C., and the methylsiloxane network polymer is solid.

<Example 2> The gel cosmetic 1 of Example 1 was examined for its ability to suppress stimulus expression using a guinea pig-damaged skin model. That is, using 6 Hartley guinea pigs (male 300 to 350 g) per group, after shaving the back, stripping with gum tape three times to cause mild inflammation, and confirmed that inflammation had subsided after 24 hours. Then, the gel cosmetic 1 was applied at a rate of 0.01 g / cm 2 and rubbed 6 times with a glass rod. As Comparative Example 1, dimethicone (100CS) and dimethicone (10CS) were replaced with jojoba oil which is a normal ester oil, and as Comparative Example 1, glycerin was used. After scrubbing, each cosmetic was wiped off with a cotton swab moistened with warm water, and the skin reaction was evaluated 24 hours after the wipe according to the Draize standard. The results are shown in Table 1. From this, it can be seen that the gel cosmetic of the present invention suppresses friction and stimulus development during scrubbing.

[0019]

[Table 1]

<Examples 3 to 5> Dimethicone was replaced with another silicone, and the same operation as in Example 1 was repeated to prepare cosmetics 2 to 4.
It was created. When this was treated according to the procedure of Example 2, the results in Table 2 were obtained. It can be seen that other silicones have similar effects. Glycerin 76 parts by weight Diglycerin 0.5 parts by weight 1,3-butanediol 0.5 parts by weight Behenyl alcohol 0.1 parts by weight Cetyl isooctanoate 1.5 parts by weight Silicone ** 2 parts by weight Granules 1 14 parts by weight Urea 1 part by weight Glycolic acid 0.1 part by weight Carboxyvinyl polymer 0.1 part by weight "Sunfresh ST100" 0.2 part by weight Dimethyl distearylamine acrylate polymer 0.1 part by weight Methylsiloxane network polymer 1.5 part by weight Stearic acid monoglyceride 0.1 part by weight Hyglyol S26 0.8 part by weight Ro-water 1.4 parts by weight Triethanolamine 0.1 part by weight ** Details are shown in Table 2.

[0021]

[Table 2]

<Examples 6 to 8> In the same manner as in Example 1, the granulated materials were changed to prepare gel cosmetics 5 to 7, and the procedure of Example 2 was evaluated. The results are shown by the number of appearances. From this, it is understood that the cosmetic material of the present invention can be safely used in any granulated product. Further, as the granulated product, a polymer granulated product is preferable, and among the polymers, those having physical properties such that they are fused without a binder are preferable, and polyethylene is particularly preferable. Glycerin 76 parts by weight Diglycerin 0.5 parts by weight 1,3-butanediol 0.5 parts by weight Behenyl alcohol 0.1 parts by weight Cetyl isooctanoate 1.5 parts by weight Dimethicone (100CS) 1 part by weight Dimethicone (10CS) 1 part by weight Granules ** 14 parts by weight Urea 1 part by weight Glycolic acid 0.1 parts by weight Carboxyvinyl polymer 0.1 parts by weight "Sunfresh ST100" 0.2 parts by weight Dimethyl distearylamine acrylate polymer 0.1 parts by weight Methyl Siloxane network polymer 1.5 parts by weight Stearic acid monoglyceride 0.1 parts by weight Hyglyol S26 0.8 parts by weight Ro water 1.4 parts by weight Triethanolamine 0.1 parts by weight ** Details are shown in Table 3.

[0023]

[Table 3]

<Example 9> With respect to the gel cosmetics 1 to 7 and Comparative Example 1, the scrubbing effect was obtained by rubbing the place where the water-based adhesive film was formed on the inner side of the upper arm with the cosmetic. It was tested how much coating was removed. The adhesive was colored by adding an aqueous solution of Blue No. 1 to the adhesive, scrubbed, washed with water, and the color difference from the background was measured with a color difference meter. The results are shown in Table 4. From this, it was confirmed that the cosmetic of the present invention has a scrubbing effect.

[0025]

[Table 4]

[0026]

EFFECTS OF THE INVENTION According to the present invention, it is possible to provide a cosmetic having a horny layer-removing effect but a low irritation.

Claims (5)

[Claims] 1. A gel cosmetic containing 60 to 90% by weight of a polyhydric alcohol, characterized by containing silicone. 2. The silicone is one or more selected from dimethicone, femethicone, cyclomethicone, amodimethicone, polyether-modified methylpolysiloxane, acryl-modified methylpolysiloxane and crosslinkable methylpolysiloxane. Claim 1 characterized by
The gel cosmetic as described in 1. 3. The gel cosmetic according to claim 1, wherein in the constitution of the polyhydric alcohol, the proportion of glycerin in the polyhydric alcohol is 90% by weight or more. 4. The gel cosmetic according to claim 1, further comprising disintegrating particles. 5. The gel cosmetic composition according to claim 1, which is for scrubbing.