JPH06116117A - Cosmetic containing capsule - Google Patents

Abstract

PURPOSE:To provide the capsule-containing cosmetic enabling to readily dissolve the membranes of the capsules, not giving an unpleasant touch even during and after its use, and giving a good using touch. CONSTITUTION:This cosmetic comprises the first agent containing capsules containing calcium alginate as their membrane component and the second agent containing a chelating agent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capsule-containing cosmetic composition, and more particularly to a cosmetic composition having a good usability in which the first and second agents are mixed at the time of use so that the capsule film is easily dissolved. .

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
BACKGROUND ART Cosmetics containing capsules are known for the purpose of stably holding cosmetic ingredients and stably holding water-insoluble ingredients such as oily ingredients. Among these, as a cosmetic containing a capsule composed of an alkaline earth metal alginate, for example, an aqueous solution of an alkali metal alginate is mixed with an aqueous solution of a calcium salt of an inorganic acid or an organic acid to form a small amount of hydrous calcium alginate. A skin cosmetic containing a spherical substance (Japanese Patent Laid-Open No. 63-139108) or a cosmetic containing a capsule encapsulating an O / W emulsion, wherein the capsule film is 0.1% of the total amount of the capsule. To 1.0 wt% calcium alginate-containing emulsion-containing capsule-containing cosmetic (Japanese Patent Laid-Open No. 2-1
17610).

However, Japanese Patent Laid-Open No. 63-139108.
In the skin cosmetic of the publication, it is not necessary to dissolve the calcium alginate film. Further, in the cosmetic of JP-A-2-117610, the film of calcium alginate needs to be easily dissolved, but when the amount of calcium alginate is too large, the film becomes difficult to be dissolved, and in some cases, capsules are used. There was a problem that the residue became dusty and the usability was not good.

Therefore, there has been a demand for a cosmetic composition which dissolves the calcium alginate film at the time of use without causing any discomfort, regardless of the amount of calcium alginate.

[0005]

Under the circumstances, as a result of intensive studies by the present inventors, as a result, a capsule containing calcium alginate as a membrane component was used as a first agent, a chelating agent was used as a second agent, and these were used at the time of use. If mixed and used,
The present invention has been completed by finding that the capsule can be easily dissolved to obtain a cosmetic having good usability.

That is, the present invention provides a cosmetic comprising a first agent containing a capsule containing calcium alginate as a film component and a second agent containing a chelating agent.

The capsule used in the first agent of the present invention is
It contains calcium alginate as a membrane component,
The capsule can be obtained by a conventionally known method, for example, a method of reacting a water-soluble alginate with a calcium salt of an inorganic acid or an organic acid to produce water-insoluble calcium alginate. Here, examples of the water-soluble alginate include potassium alginate, sodium alginate, triethanolamine alginate, ammonium alginate and the like. Examples of the calcium salt of an inorganic acid or an organic acid include calcium chloride, calcium sulfate, calcium citrate, calcium phosphate, calcium lactate and the like. In order to react these, for example, a solution containing a water-soluble alginate, preferably 0.01 to 2% by weight (hereinafter, simply represented by%), and a calcium salt of an inorganic acid or an organic acid, preferably 0.1.
A solution containing 01 to 10% may be mixed. As a component to be encapsulated in a solution of water-soluble alginate,
For example, an aqueous component that can be used in ordinary cosmetics, an ultraviolet absorber, a moisturizer, alcohols, a preservative, a water-soluble polymer,
Dyes, fragrances, antioxidants, and if necessary, an O / W type emulsion obtained by emulsifying an oily component with a surfactant can be appropriately mixed.

Calcium alginate is contained in the film of the capsule thus obtained in an amount of 0.01 to 2%, particularly 0.1.
It is preferably contained at 1 to 1%.

The first agent of the present invention is, for example, an aqueous solution of a water-soluble alginate in which necessary components are mixed according to the purpose,
It can be manufactured by dropping into an aqueous solution of a calcium salt of an organic acid or an inorganic acid to form capsules, stirring for 10 to 60 minutes after dropping, sizing to a suitable size, and then washing with water. .

The second agent of the present invention contains a chelating agent. Here, the chelating agent is not particularly limited as long as it can release the calcium ion from the alginic acid matrix by chelate formation to make the film of calcium alginate water-soluble, for example, tetrasodium ethylenediaminetetraacetic acid, ethylenediaminetetraacetic acid. Trisodium, ethylenediaminetetraacetic acid disodium,
Examples thereof include potassium ethylenediaminetetraacetate, tripotassium ethylenediaminetetraacetate, and dipotassium ethylenediaminetetraacetate. Of these, disodium ethylenediaminetetraacetate is particularly preferable because it can be used in a weakly acidic region, and thus has favorable results in use. These chelating agents are contained in the second agent in an amount of 0.01 to 5%, particularly 0.1 to 2%.
It is preferable to mix it, and it is preferable to use 1 or more in a molar ratio to 1 mol of calcium ion contained in the capsule in the first agent.

In the second agent, in addition to the chelating agent, components used in ordinary cosmetics, such as ultraviolet absorbers, moisturizers, alcohols, preservatives, water-soluble polymers, pigments, fragrances, antioxidants, etc. And the like can be appropriately blended within a range that does not impair the effects of the present invention.

The cosmetic of the present invention comprises the above-mentioned first and second agents, which are mixed at the time of use and the capsule membrane is dissolved and used. In particular, it is preferable that the first agent or the second agent contains an ion capable of making alginic acid water-soluble, since the alginic acid forms a water-soluble salt with these ions and the capsule is more easily dissolved.

[0013]

EXAMPLES Next, the present invention will be further described with reference to examples, but the present invention is not limited to these examples.

Example 1 A capsule-containing cosmetic having the composition shown in Table 2 was produced, and its solubility and usability were evaluated. The results are shown in Table 2. (Manufacturing method) First agent: Components (1) to (3) and (4) to (5) are mixed respectively to form solutions A and B, and solution A is dropped into solution B to form capsules. , The first agent. Second agent: Components (1) to (5) are mixed to obtain a second agent. (Evaluation method) 20 special panelists took 5 ml of the first agent, mixed 2 ml of the second agent, and evaluated the solubility and usability of the capsule when applied to the site of application according to the following criteria. It was judged by the average score.

[0015]

[Table 1] (Evaluation criteria) Solubility: 5; Completely dissolved. 4; Almost dissolved. 3; Some were not dissolved. 2; hardly dissolved. 1; did not dissolve Usability: 5; Very good. 4; Good. 3; normal. 2; Bad. 1; Very bad. (Judgment) ○: Average score of 3.5 or more △: Average score of 2.5 or more ×; Average score of less than 2.5

[0016]

[Table 2]

As is clear from the results shown in Table 2, the capsule-containing cosmetic of the present invention had a good usability in which the capsule film was easily dissolved and there was no discomfort during or after use. On the other hand, the comparative product which did not use the chelating agent was not satisfactory in solubility and usability.

[0018]

EFFECTS OF THE INVENTION The capsule-containing cosmetic of the present invention has a usability in which the capsule film is easily dissolved by mixing the first agent and the second agent at the time of use and there is no discomfort during and after use. It is a good one.

Claims (1)

[Claims] 1. A cosmetic comprising a first agent containing a capsule containing calcium alginate as a film component and a second agent containing a chelating agent.