JP2003089615A - Pack cosmetic with marshmallow touch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a pack cosmetic having good usability and feeling in use, in particular, sensing no chilly feel and giving soft touch like marshmallow. SOLUTION: This pack cosmetic is to be used in a way of mixing an aqueous acid solution-containing composition with a water-reactive metal oxide, and includes a starch-acrylic acid graft polymer and/or a salt thereof, wherein it is preferable that the above acid is an organic acid such as citric acid and the water-reactive metal oxide is magnesium oxide. Further, by incorporating alginic acid or a soluble salt thereof into this pack cosmetic, favorable hardness is presented as a result of depositing magnesium alginate on the above mixing operation.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to cosmetics, and more particularly to cosmetics suitable for pack cosmetics.

[0002]

2. Description of the Related Art Packed cosmetics are a form of cosmetics in which a cosmetic composition containing an active ingredient is occluded on the skin with a film or the like to enhance absorption of the active ingredient.
Those using polymer film forming agents, those using high melting point wax emulsions, those using high viscosity compositions that make minerals and water such as sea mud and talc, those using polymers containing foam Alternatively, alginic acid is insoluble in water and /
Or the thing using the film of a poorly soluble salt etc. can be illustrated as the formulation. For removal of these, in the case of forming a film with a polymer, it was a usual method to slowly peel off the formed film, and to wash away the others. However, the strength of the conventional polymer film is not so strong, and in addition, since it has a strong affinity with the skin, there are many parts that remain on the skin. At present, there is no such thing, and for other things, face washing is essential. Since the pack which remains on the skin even in such a face wash has a high affinity with the skin, there is a demand for a pack cosmetic which is hard to remove even with an aqueous face wash and can be easily removed after use. Under these circumstances, foam-type pack cosmetics using aerosol have been developed.
This utilizes a foam produced by injecting a higher alcohol, a nonionic surfactant, and water together with a gas. However, due to the limitation of this structure, a so hard foam cannot be produced. Tactilely, it was desired to create a firmer, more elastic, so-called marshmallow-like foam. In addition, when applying the pack, there is often a temperature difference between the temperature of the preparation and the temperature of the skin, which causes a noticeable cooling sensation during application, which is a hindrance when inducing comfort in esthetics and the like. Therefore, this improvement was also required.

In a pack cosmetic composition in which a composition containing an aqueous solution of an acid and a water-reactive metal oxide are mixed at the time of use,
No pack cosmetics characterized by containing a starch / acrylic acid graft polymer and / or a salt thereof have been known at all, and such a pack cosmetic has excellent usability and usability and is an aesthetic product. It was not known at all to be suitable as a pack cosmetic.

[0004]

The present invention has been made under such circumstances, and it is an object of the present invention to provide a pack having excellent usability and usability in pack cosmetics.

[0005]

In view of such a situation, the inventors of the present invention have made earnest research efforts for a pack having excellent usability and usability in pack cosmetics, and as a result, have found that an aqueous solution of an acid is used at the time of use. In a pack cosmetic in a form of mixing a composition containing the same and a water-reactive metal oxide, the pack cosmetic characterized by containing a starch / acrylic acid graft polymer and / or a salt thereof has such characteristics. They found that they had it, and completed the invention. That is, the present invention relates to the techniques described below. (1) A pack cosmetic in which a composition containing an aqueous solution of an acid and a water-reactive metal oxide are mixed at the time of use, characterized by containing a starch / acrylic acid graft polymer and / or a salt thereof. Pack cosmetics. (2) The pack cosmetic according to (1), wherein the water-reactive metal oxide is magnesium oxide. (3) The pack cosmetic according to (1) or (2), which is a foam type. (4) Any one of (1) to (3), characterized in that the foaming is caused by a reaction between bicarbonate or carbonate and an acid.
Pack cosmetics according to item. (5) It further comprises alginic acid and / or a water-soluble salt thereof in a non-soluble form, (1) to
(4) The pack cosmetic according to any one of items. (6) (A) 1) Alginic acid and / or sodium alginate and magnesium oxide 2) Carbonate and / or bicarbonate and 3) Starch / acrylic acid graft polymer and / or
Or a first agent containing a salt thereof and a second agent (B) formed of an aqueous solution containing an organic acid, (1) to
(5) The pack cosmetic according to any one of items. (7) The content of the starch / acrylic acid graft polymer and / or its salt is 0.01 to 5 in the final use form.
The pack cosmetic according to (6), characterized in that it is contained in weight%. (8) It is for aesthetic use, (1)
(7) The pack cosmetic according to any one of (7). Hereinafter, the present invention will be described in more detail.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The pack cosmetic of the present invention is a pack cosmetic in which a composition containing an aqueous solution of an acid and a water-reactive metal oxide are mixed at the time of use, and a starch / acrylic acid graft polymer and / or Alternatively, it is characterized by containing a salt thereof. A pack cosmetic in the form of mixing a composition containing an aqueous solution of an acid with a water-reactive metal oxide at the time of use releases reaction heat at the same time, that is, heat of hydration and heat of neutralization. Sometimes I can feel the pitch. As such a metal, specifically, calcium, magnesium, zinc and the like can be preferably exemplified. Among these, alginic acid and / or a soluble salt thereof, which will be described later, also serves as a solidifying agent or a thickening agent. It is preferable to use magnesium oxide. That is, magnesium oxide is allowed to coexist with a water-soluble salt of alginic acid such as alginic acid or sodium alginate, and an aqueous solution of an acid such as an organic acid is added thereto to react with magnesium oxide to generate heat and generate magnesium ions. Precipitating magnesium alginate by the salt forming reaction of alginic acid,
As a result, it is possible to preferably exemplify a mode of solidifying or thickening. The pack cosmetic of the present invention contains an acid for two purposes: to generate heat by reaction with a metal oxide and to foam when used. As the acid, an organic acid which is mild in reaction is preferable, and as the organic acid, citric acid, lactic acid, malic acid, acetic acid or oxalic acid can be preferably exemplified. The content of an acid such as an organic acid in the pack cosmetic of the present invention is preferably 1 to 10% by weight, more preferably 3 to 7% by weight, based on the total amount of the cosmetic in the final use form. The content of the alginic acid and / or a salt thereof such as a sodium salt in the pack cosmetic of the present invention is in the final use form, that is, in the form of a mixture of two agents in the case of a two-agent type,
0.01 to 5% by weight is preferable, and 0.02 to 1% by weight is more preferable. Moreover, as magnesium oxide, 0.1 to
It is preferably 10% by weight, more preferably 0.2 to 5% by weight. This is because if the amount of these components is too small, it may be difficult to increase the viscosity, and the temperature may be too low. If the amount of these components is too large, the components may become too hard or the temperature may become too high.

The pack cosmetic of the present invention is characterized by containing a starch-acrylic acid graft polymer and / or a salt thereof, in addition to the constitution of the Arge pack. The salt or partial salt of the starch-acrylic acid graft polymer has a property of containing a large amount of water and having a property of swelling, and such a product is already on the market and can be used. As a preferable example of such a commercially available product, Sunfresh ST100-SP sold by Sanyo Chemical Industry Co., Ltd. can be exemplified. In the pack cosmetic of the present invention, such a starch / acrylic acid graft polymer and / or its salt has the property of making the physical properties of the pack cosmetic after solidification easier to remove from the skin. The preferred content of the starch / acrylic acid graft polymer and / or its salt in the pack cosmetic of the present invention is 0.1 to 10 with respect to the total amount of the pack cosmetic in the solidified state of the use form in a total amount. % By weight, more preferably 0.5
~ 5% by weight. This is because the effect of improving removability may not be exhibited even if the amount is too large or too small.

[0008] In the pack cosmetic of the present invention, it is preferable that it is an algae pack and a foam type at the same time. By being such a foaming type, the feeling of use of the pack is softened, and thereby deeper relaxation can be obtained, and carbon dioxide gas for foaming has a blood circulation promoting action, which further enhances the effect of the pack. Because you can. In order to realize such a foamed form, it is possible to exemplify that a carbonate or a bicarbonate is contained, and the content in the final use form is 0.01% with respect to the total amount of the pack cosmetic. -5% by weight is preferable, and 0.02-1% by weight is more preferable. These generate carbon dioxide gas by the excess part of the organic acid used for the exothermic reaction.

The pack cosmetic of the present invention produces a warm sensation due to the heat generated by the agate of the metal oxide and the acid and, in some cases, the heat of dissolution generated when the polyhydric alcohol such as glycerin is hydrated, to give the metal alginate salt. A highly viscous structure is formed by the water content of the starch / acrylic acid graft polymer salt, and carbon dioxide gas generated by the reaction of the carbonate and / or bicarbonate with an acid is contained in the highly viscous structure to form an elastic foam structure. Thus, the pack cosmetic having a warm and elastic foam structure as a whole, that is, the pack cosmetic of marshmallow touch is embodied.

The pack cosmetic of the present invention generates heat by the reaction between an acid and a metal oxide, and generates carbon dioxide gas by a reaction between an acid and a carbonate or bicarbonate. Alternatively, a form that does not contact the carbonate or bicarbonate in the form of an aqueous solution is required, and from this viewpoint, it is preferable to take the form of a two-agent mixed preparation in which two independent preparations are mixed at the time of use. Such a combination of two agents includes (A) 1) alginic acid and / or sodium alginate, magnesium oxide, 2) carbonate and / or bicarbonate and 3) starch / acrylic acid graft polymer and / or
Alternatively, the first agent containing a salt thereof, and as a preferable form, a paste or a highly viscous liquid dispersion of the first agent and (B) a second agent consisting of an aqueous solution containing an organic acid can be preferably exemplified. Based on the water content and the content of the essential components, it is preferable to design such that the ratio of the first agent and the second agent is 1: 1 to 3: 1.

The pack cosmetic of the present invention may contain optional components usually used in cosmetics, in addition to the above-mentioned essential components. Such optional ingredients include, for example, hydrocarbons such as squalane, liquid paraffin, and solid paraffin, silicones such as dimethicone and femethicone, esters such as jojoba oil and gallow, fatty acids such as stearic acid and oleic acid, Higher alcohols such as behenyl alcohol, cetanol and oleyl alcohol, triglycerides such as beef tallow and olive oil, stearic acid monoglyceride, sorbitan sesquioleate, polyoxyethylene sorbitan monooleate,
Nonionic surfactants such as polyoxyethylene stearate, anionic surfactants such as sodium lauryl stearate, cationic surfactants such as quaternary alkyl ammonium salts, 1,3-butanediol, glycerin, isoprene glycol, Preferable examples include polyhydric alcohols such as 1,2-pentanediol, powders such as crystalline cellulose and crosslinked methylpolysiloxane, thickeners such as xanthan gum and hydroxypropyl cellulose, active ingredients such as vitamins and glycyrrhizin. . Among these, the preferable one is that it contains a polyhydric alcohol which generates heat of hydration when mixed with water, and particularly glycerin. A particularly preferred form is a form containing only glycerin. The content of the polyhydric alcohol is preferably 10 to 50% by weight, and more preferably 15 to 45% by weight, based on the total amount of the cosmetic in the final use form.

[0012]

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

Example 1 A pack cosmetic of the present invention was prepared according to the following formulation. That is, the first agent consisting of the highly viscous liquid composition was prepared by mixing the prescription components of (i) with a homomixer and dividing into 20 parts by weight. In addition, the second agent was prepared by thoroughly stirring and mixing the prescription ingredients of B at room temperature and aliquoting them by 10 parts by weight. The first and second agents were combined to give the pack cosmetic of the present invention. Ikaolin 30 parts by weight Crystalline cellulose 10 parts by weight Sodium alginate 0.5 parts by weight Starch-sodium acrylate graft polymer 3 parts by weight Magnesium oxide 3 parts by weight Silicic anhydride 3 parts by weight Sodium bicarbonate 1.5 parts by weight Glycerin 49 parts by weight Loquen Acid 14.3 parts by weight Sodium citrate 7.1 parts by weight Water 78.6 parts by weight Note) Sunfresh ST100-SP was used as the starch / sodium acrylate graft polymer.

<Example 2> The pack cosmetic of Example 1 was tested for comfort in use. That is, after packing with the pack cosmetics, how comfortable the pack cosmetics after use were evaluated was evaluated using a specialized panel. For evaluation, a non-woven fabric was applied to the face, and the pack cosmetics obtained by sufficiently mixing one agent and two agents were spread on it,
Packing for 10 minutes by this, and then the feeling of comfort that can be obtained, score 5: very comfortable, score 4: pretty comfortable, score 3: comfortable, score 2: dissatisfied with comfort, score 1: comfortable No criteria used. As Comparative Example 1, kaolin was used as the starch / sodium acrylate graft polymer, and as Comparative Example 1, sodium starch acrylate was used as the starch / sodium acrylate graft polymer. The results show that the pack cosmetic of Example 1 has a score of 4, whereas the control example 1 has a score of 2 and the comparative example has a score of 3, demonstrating an excellent feeling of use of the pack cosmetic of the present invention. This is considered to be due to the good feeling of use of the elastic warm foam produced by the combined effect of the component constitutions of the present invention.

<Example 3> The same examination was conducted by changing the amount of the starch-sodium acrylate graft polymer. Table 1 shows the evaluation results of these pack cosmetics evaluated in the same manner as in Example 2. Therefore, in the pack cosmetic of the present invention, the amount of the starch / sodium acrylate graft polymer is 0.1 to 10% by weight based on the total amount of the pack cosmetic in the whipped state in the form of use. It can be seen that it is more preferably 0.5 to 5% by weight. Ikaolin * Crystalline cellulose 10 parts by weight Sodium alginate 0.5 parts by weight Starch / sodium acrylate graft polymer * Magnesium oxide 3 parts by weight Silica anhydride 3 parts by weight Sodium bicarbonate 1.5 parts by weight Glycerin 49 parts by weight Locitric acid 14.3 Parts by weight sodium citrate 7.1 parts by weight water 78.6 parts by weight Note) Sunfresh ST100-SP was used as the starch / sodium acrylate graft polymer. * Details are shown in Table 1.

[0016]

[Table 1]

[0017]

According to the present invention, it is possible to provide a pack which is excellent in usability and feeling in pack cosmetics.

Claims (8)

[Claims] 1. A pack cosmetic in which a composition containing an aqueous solution of an acid and a water-reactive metal oxide are mixed at the time of use, wherein the pack cosmetic contains a starch / acrylic acid graft polymer and / or a salt thereof. Yes, pack cosmetics. 2. The pack cosmetic according to claim 1, wherein the water-reactive metal oxide is magnesium oxide. 3. The pack cosmetic according to claim 1, which is a foam type. 4. The pack cosmetic according to any one of claims 1 to 3, wherein the foaming is caused by a reaction between bicarbonate or carbonate and an acid. 5. The pack cosmetic according to claim 1, further comprising alginic acid and / or a water-soluble salt thereof in a non-soluble form. 6. (A) 1) Alginic acid and / or sodium alginate and magnesium oxide, and 2) Carbonate and / or
Or a second agent comprising a bicarbonate and 3) a starch / acrylic acid graft polymer and / or a salt thereof, and (B) an aqueous solution containing an organic acid. 5. The pack cosmetic according to any one of 5 above. 7. The content of the starch-acrylic acid graft polymer and / or its salt is 0.
The pack cosmetic according to claim 6, wherein the pack cosmetic is from 0 to 5% by weight. 8. The pack cosmetic according to claim 1, which is for aesthetic use.