JPH09143046A - Cosmetic material containing gel-state scrub - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic material containing a gel-state scrubbing agent having a moderate action to skin and a soft feeling, not giving an excessive stimulation and not causing an uncomfortable feeling such as a feeling of a pain in its use. SOLUTION: This cosmetic material contains a spherical granulated material as a scrubbing agent obtained by cross-linking a water soluble polymer having a thermal reversibility and capable of forming a gel such as a gelatin, an agar, a κ-carrageenan, a η-carrageenan, a β-1,3-glucan, tamarind seed polysaccharides, a furcellaran, a psyllium seed gum and a guaran gum, etc., by a polyvalent metal ion of alginic acid salt, pectin, etc., solidifying with the water soluble polymer having an increased viscosity and granulating. The blending ratio of the scrubbing agent is suitably 0.01-5.0wt.% and the water content of the cosmetic material is preferably 0.5-50.0wt.%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic composition containing a gel-like scrub agent, which has a mild and soft feeling on the skin and does not cause discomfort such as pain without giving excessive irritation. Regarding fees. More specifically, a water-soluble polymer that forms a thermoreversible gel is solidified together with a water-soluble polymer that is crosslinked and thickened by a polyvalent metal ion, and then granulated to form a spherical granule as a scrubbing agent. The present invention relates to cosmetics containing the same.

[0002]

2. Description of the Related Art In recent years, cosmetics containing a scrubbing agent have been provided for the purpose of removing dirt and wastes of the skin, aging keratinocytes and the like, and promoting metabolism by giving moderate stimulation to the skin. ing.

As such a scrubbing agent, natural ones include apricot inner skin, walnut kernels, almond seeds, etc.
Nylon powders in synthetic systems include crushed products of endocarp, seeds or seed nuclei of plants, crushed shells of crustaceans and eggshells.
Water-insoluble resin granules such as polyethylene powder and silica powder and granules of non-water-soluble powder are used.

However, the above-mentioned conventionally used scrubbing agents all have high hardness and the surface roughness of the scrubbing agent particles is large, so that they give excessive irritation to the skin and eventually cause no pain. There was a pleasant feeling.
This tendency was remarkable especially when it was mixed with a cosmetic base having a low water content. Further, since the skin irritation is strong, there is a risk of causing skin symptoms with pigmentation similar to tribulation melasma due to nylon towels due to heavy use.

[0005]

Therefore, in the present invention, the action on the skin has a mild and soft feeling,
Moreover, it is an object of the present invention to provide a scrubbing agent-containing cosmetic that does not give excessive irritation and does not cause discomfort such as pain when used.

[0006]

In the present invention, the application of a granulated product of a water-soluble polymer gel as a scrubbing agent was examined. As granules of a water-soluble polymer gel, particles made of carrageenan gel and spherical particles obtained by mixing with an oligosaccharide, spraying and drying are known (French Patent No. 2683720, Japanese Patent Laid-Open No. Hei 5 (1998) -5720). -222
208). However, the particles formed of such a water-soluble polymer are not sufficiently strong to be blended as a scrubbing agent, and particles are likely to be fused and aggregated, and the stability in the base is low. However, it is not practical.

Therefore, as a result of studies to improve the strength and stability of the granulated product, a water-soluble polymer which forms a gel having thermoreversibility is cross-linked and thickened by a polyvalent metal ion. It was found that the film strength of particles can be improved and the fusion of particles can be prevented by solidifying and granulating with a polymer, and the above problems have been solved.

The water-soluble polymer forming the thermoreversible gel used in the present invention includes gelatin, agar,
κ-carrageenan, η-carrageenan, β-1,3-glucan, tamarind seed polysaccharide, ferceran, psyllium seed gum, gellan gum, and the like, and a mixture of xanthan gum and locust bean gum or tara gum can also be used. . In the present invention, one kind or two or more kinds are selected from the above water-soluble polymers and used.

As the water-soluble polymer which is crosslinked and thickened by polyvalent metal ions, alginate or pectin which can be crosslinked and gelled by calcium ions or magnesium ions can be used.

The spherical granulated product of the water-soluble polymer used in the present invention is prepared by the following method. First, a water-soluble polymer that forms a thermoreversible gel and a water-soluble polymer that crosslinks and thickens with polyvalent metal ions are dispersed and suspended in purified water,
Heat to dissolve. This aqueous solution is added to oil such as liquid paraffin with stirring to prepare a water-in-oil emulsion to form spherical particles of a water-soluble polymer solution,
An aqueous solution containing a polyvalent metal ion such as calcium ion or magnesium ion is added to solidify the water-soluble polymer. The oil is then removed and, after drying, sieved to a uniform particle size.

The spherical granules of the water-soluble polymer used in the present invention may be added with pigments and lubricants for cosmetics. Granule particle size is 0.05-1.0mm
It is preferably about 0.01 to 0.01% with respect to the total amount of the cosmetic.
About 5.0% by weight is preferable. Further, regarding the cosmetics containing the spherical granules of the water-soluble polymer, if the water content is too high, the entire spherical granules swell and lose hardness, and the scrubbing effect decreases, so the cosmetic base The water content in the agent is preferably 0.5 to 50% by weight.

[0012]

In the cosmetic composition of the present invention, the spherical granules of the water-soluble polymer swell and become soft due to the water present in the cosmetic composition, but the interior remains hard. Therefore, when using the cosmetics according to the present invention, a soft feeling to the skin is obtained, there is no discomfort such as pain, damage to the skin, or pigmentation due to heavy use does not occur, and With proper stimulation, blood circulation is promoted, metabolism is improved, and skin stains and waste products,
The effect of removing the aged stratum corneum is also good.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is provided in the form of a cleansing cosmetic such as a facial cleansing cream and a cleansing gel, a massage cosmetic such as a massage cream and a massage gel, and a pack cosmetic such as a wipe type pack and a rinse type pack. To be done.

[0014]

EXAMPLES Further, the features of the present invention will be described in detail with reference to examples. First, an example of producing a spherical granulated product using a water-soluble polymer to be contained in a cosmetic as a scrubbing agent is shown below.

[0015]

[Table 1] In each production example, 1.0 kg of the polymer shown in the column "Water-soluble polymer (A)" in Table 1 and "Water-soluble polymer (B)"
0.1 kg of the polymer shown in the column is heated and dissolved in 10.0 l of purified water, and this is added to liquid paraffin while stirring and cooled, and calcium chloride is added to solidify it into particles. At this time, in Production Example 3, β-1,3-glucan was solidified by heating to 60 ° C. Then, the liquid paraffin is removed, and after drying, the particle size is adjusted by passing through a sieve. By this method, it was possible to obtain approximately 0.5 kg of spherical granules.

Next, Tables 2 and 3 show the formulations of the massage cosmetics according to Examples 1 to 5 of the present invention and the gel packs according to Examples 6 to 10. The scrubbing agents in Tables 2 and 3 were selected from the production examples shown in Table 1 and shown in Table 4. The preparation method is as follows. In Examples 1 to 5, (1) and (3) to (5) are sequentially added to (2) in Table 2, mixed and dissolved, and stirred to homogenize. Further, (6) is dissolved in (9) and added to increase the viscosity. After cooling, (7) is added to disperse (8). For Examples 6 to 10, in Table 3 (2)
(1) and (3) to (7) are sequentially added, mixed and dissolved, and stirred to homogenize. Further, (8) is dissolved in (11) and added to increase the viscosity, (9) is added after cooling, and (10) is dispersed.

[Table 2]

[Table 3]

[Table 4]

A usage test was conducted on the above-described embodiments of the present invention. In the use test, a group of 20 male and female panelists was set,
Each group was made to use the example of the present invention and the comparative example in the blind. The replica of the skin surface after use was observed with a microscope, and it showed "good; 5 points", "somewhat good; 4 points", "ordinary;"
It was evaluated as "3 points", "slightly bad; 2 points", "bad; 1 point" and scored. In addition, sensory evaluation was performed on discomfort such as touch and pain during use, and skin cleansing action. Regarding the feel and skin cleansing action during use, "Good; 5
"Point", "Slightly good; 4 points", "Normal; 3 points", "Slightly bad; 2 points", "Poor; 1 point", "Very strong; 4 points" for discomfort such as pain. "I feel a little stronger; 3
"Point", "feel; 2 points", "feel subtly; 1 point",
Scored as "Don't feel; 0 point". The above evaluation results are shown in Table 5 as the average value of each group. In addition, as comparative examples, in Tables 2 and 3, comparative examples 1 and 2 were prepared by using a crushed walnut kernel as a scrubbing agent, and comparative examples 3 and 4 were prepared by using polystyrene powder.

[0018]

[Table 5] From Table 5, in the Example use group of the present invention, although almost inferior to 4.6 to 4.8 points of the Comparative Example use group, a substantially good exfoliating action was observed, and the feeling during use was Many panelists rated it good. In addition, a small number of panelists answered that they felt slight discomfort such as pain during use. As for the skin cleansing action, a favorable evaluation of 4.3 to 4.5 was obtained. On the other hand, in the group used in Comparative Example, discomfort such as pain was remarkably exhibited, and therefore, the evaluation of feeling during use was also poor. In addition, the evaluation of the skin cleansing action was somewhat low due to the bad feel during use.

During the above-mentioned use test period, no panelists recognized skin irritation or sensitization in any of the use groups of Examples.

[0020]

As described in detail above, according to the present invention, a scrub agent containing a mild and soft feeling on the skin, not giving excessive irritation, and causing no discomfort such as pain when used. I was able to provide cosmetics.

Claims (5)

[Claims] 1. A spherical granulated product obtained by solidifying and granulating a water-soluble polymer that forms a thermoreversible gel together with a water-soluble polymer that is crosslinked and thickened by polyvalent metal ions. Cosmetics. 2. A water-soluble polymer forming a thermoreversible gel is gelatin, agar, κ-carrageenan, η-carrageenan, β-1,3-glucan, tamarind seed polysaccharide,
The cosmetic according to claim 1, which is one or more selected from furcellan, psyllium seed gum, and gellan gum. 3. The cosmetic according to claim 1, wherein the water-soluble polymer that is crosslinked and thickened by the polyvalent metal salt is alginate and / or pectin. 4. A compounding amount of spherical granules obtained by solidifying and granulating a water-soluble polymer that forms a thermoreversible gel together with a water-soluble polymer that is crosslinked and thickened by polyvalent metal ions. Is 0.01 to 5.0% by weight, cosmetics according to claims 1 to 3. 5. The cosmetic according to claim 1, wherein the cosmetic containing the spherical granules has a water content of 0.5 to 50.0% by weight.