JP2000169322A - Pore contracting agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pore-contracting agent and a pore-conspicuous-suppressing cosmetic for continuously contracting pores and making the pores essentially inconspicuous. SOLUTION: A pore contracting agent containing a sulfated polysaccharide as an active ingredient,
And a pore-inhibiting cosmetic containing the pore-contracting agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pore shrinking agent and a cosmetic for suppressing pore conspicuousness containing the same as an active ingredient.

[0002]

2. Description of the Related Art Pores (follicular pores) are gaps existing between hair and the surface of the skin. If pores are too large or keratin plugs (a mixture of keratin and sebum) enter the pores, the pores become black. ,
The pores are conspicuous and are not preferable in appearance. Conventionally, as a method for suppressing the conspicuousness of pores, means such as concealment (filling, blurring, etc.) of the pores by applying a cosmetic of the same color as the skin, pore packing treatment (removal of keratin plugs, suppression of sebum secretion, and the like) are known.

[0003]

However, concealing pores does not provide a fundamental solution, and pore-packing is effective for removing keratotic plugs and the like, and the appearance of pores is temporarily suppressed.
The effect does not last for a long time. For this reason, there has been a demand for a pore-contracting agent that continuously reduces pores and makes the pores essentially inconspicuous.

[0004]

Means for Solving the Problems The present inventors have found that sulfated polysaccharide effectively shrinks pores. That is, the present invention provides a pore contracting agent containing a sulfated polysaccharide as an active ingredient, and a cosmetic for suppressing pore conspicuousness containing the pore contracting agent.

[0005]

DETAILED DESCRIPTION OF THE INVENTION The sulfated polysaccharide used in the present invention has a structure in which a part of the hydroxyl group of the polysaccharide is ester-bonded to sulfuric acid. The sulfated polysaccharides are preferably dextran sulfate, fucoidan, chondroitin sulfate, heparin and carrageenan. Since Hibamata contains a large amount of sulfated polysaccharide, especially fucoidan, it is particularly preferable to use sulfated polysaccharide derived from Hibamata. The sulfuric acid content in the sulfated polysaccharide is 10 to 45% by weight
(Hereinafter simply indicated by%) is preferable. The molecular weight of the sulfated polysaccharide is preferably 500,000 or less. These sulfated polysaccharides
It is known to have an intestinal environment improving effect, an anticoagulant effect, an elasticity of cartilage, a strength maintaining effect, etc., but it was not known at all to have a pore shrinking effect.

[0006] Sulfate polysaccharides derived from Hibamata are obtained by pulverizing the whole algae of Hibamata or their leaves, petiole, stems, roots, seeds or the like without drying or drying them, and then using a solvent or Soxhlet extractor at room temperature or under heating. The extract, diluent, concentrate, and dried powder may be used as they are, or may be further purified and used by a conventional method. Examples of the extraction solvent include water, esters such as ethyl acetate, ketones such as acetone, alcohols such as butylene glycol, and pyridine. One or more of these may be used. Of these, water, butylene glycol, and mixtures thereof are particularly preferred. The mixing ratio of Hibamata and the solvent is preferably 1 to 10 parts by volume of the solvent per 1 part by weight of Hibamata. The extraction temperature is preferably 3 to 70 ° C., and the extraction time is preferably 12 hours to 14 days.

The pore contracting agent of the present invention is obtained by blending one or more of such polysaccharide sulfates. The amount of sulfated polysaccharide
0.0005 to 10%, particularly preferably 0.01 to 5%. When using Hiba mata extract, the compounding amount is
0.001 to 5%, particularly 0.01 to 2.5 in terms of solid content
% Is preferred.

[0008] The pore-inhibiting cosmetic composition of the present invention contains such a pore-contracting agent, and can be used as an external preparation or an internal preparation. External preparations, especially external preparations for skin, are preferred. Pore constraining cosmetics include, as an optional ingredient, an oily base, a humectant, an ultraviolet absorber, alcohols, chelates, a pH adjuster, a preservative, a thickener, a fragrance, etc., or a pore constraining agent, in addition to a pore constrictor. A dye, a keratotic plug remover, a sebum suppressant and the like used for suppression can be blended and manufactured according to a conventional method.
The amount of the pore shrinking agent in the pore-constraining cosmetic is 0.
0005 to 5% is preferred.

It is preferable that the cosmetic for suppressing pore conspicuousness of the present invention is used by applying it to a site where the pores are particularly conspicuous on the skin, for example, the periphery of the nose, cheeks, forehead and the like. It is more preferable to use the composition after applying it after the peel-off type pore packing treatment.

[0010]

EXAMPLES Production Example 1 1 kg of a ground alga of Hibamata was immersed in 10 L of distilled water at 5 ° C. for 2 days to extract a solvent-soluble component. The same operation was repeated for the residue from which the extract was separated to obtain a total of 14 L of the extract. After the extract was filtered, the solvent was distilled off and the residue was dried under reduced pressure to obtain 20 g of the extract (containing 5% of fucoidan).

Examples 1 and 2 and Comparative Example 1 A lotion (cosmetic for suppressing pores) with the composition shown in Table 1.
Was produced according to a conventional method.

[0012]

[Table 1]

Test Example 1 The lotions of Example 1 and Comparative Example 1 were applied to eight males (26
10 to 50 years each on the left and right sides of the nose
Coated for days. In addition, a nose and a pore packing treatment were performed before the start of the test. Before and at the end of the test, a nose photograph was taken and a 60-fold nose enlargement photograph was taken by DSA (manufactured by Hirox), and the degree of improvement in the conspicuousness of pores was measured, and the diameter, perimeter, and area change were measured. The degree of improvement in the conspicuousness of the pores was compared between the photographs of the nose before and after the start of the test: 2: improved, 1: slightly improved, 0: no change, -1: slightly deteriorated, -2: deteriorated,
Was visually determined according to the criterion, and expressed as an average value of eight persons. In addition, the diameter, perimeter, and area change of the pores can be measured by measuring the magnified photograph of the 60-fold nose before and after the test with image analysis software (MEDIA CYBERNETICS IMAGE).
-PRO PLUS Ver. 3.0), and the average increase rate (%) at the end of each pore (20 per person) at the end of the test before the start of the test was calculated and expressed as an average value of 8 persons.

The improvement in pore conspicuousness was -0.3 of Comparative Example 1.
As opposed to 8, the value of Example 1 was 1.00, indicating that the product of the present invention had an effect of suppressing conspicuous pores in the nose. Further, the pore diameter was 116.0 in Comparative Example 1, whereas 86.0 in Example 1.
And the pore circumference is 118.7 of Comparative Example 1,
Example 1 was 91.2, and the pore area was 1 in Comparative Example 1.
In contrast to 20.9, Example 1 was 85.9. The comparative product had larger pores, whereas the product of the present invention had smaller pores.

Test Example 2 The lotions of Example 2 and Comparative Example 1 were treated with three males (24
~ 33 years old)
Coated for days. Next, the degree of improvement in the conspicuousness of the pores was determined in the same manner as in Test Example 1.

The improvement in pore appearance was 0 in Comparative Example 1 and 1.0 in Example 2, indicating that the product of the present invention had an effect of suppressing pore appearance at the nose.

Test Example 3 The lotions of Example 1 and Comparative Example 1 were treated with 10 males (25
(Approximately 35 years old) was applied on the left and right sides of the cheek of 70 mg each for 2 months. Next, the degree of improvement in the conspicuousness of the pores was determined in the same manner as in Test Example 1.

The degree of improvement in pore conspicuousness was -0.3 of Comparative Example 1.
On the other hand, in Example 1, the value was 1.4, and the effect of the product of the present invention on suppressing pores on the cheeks was observed.

[0019]

EFFECTS OF THE INVENTION The use of the pore-contracting agent and pore-conspicuousness-inhibiting cosmetic composition of the present invention reduces the tendency of pores to expand even when the pores are shrunk or treated in parallel with the pore-packing treatment, thereby making the pores fundamentally conspicuous. Can be eliminated.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeru Moriwaki 2606 Kabane-cho, Akaga-cho, Haga-gun, Tochigi Prefecture Inside the Kao Corporation Research Institute Terms (reference) 4C083 AA111 AA112 AB052 AC012 AC102 AC122 AC352 AC392 AC482 AD211 AD212 AD341 AD342 AD351 AD352 CC04 DD23 DD27 EE11 FF01

Claims (4)

[Claims] 1. A pore contracting agent comprising a sulfated polysaccharide as an active ingredient. 2. The pore contracting agent according to claim 1, wherein the sulfated polysaccharide is at least one selected from the group consisting of dextran sulfate, fucoidan, chondroitin sulfate, heparin, and carrageenan. 3. The pore contracting agent according to claim 1, wherein the sulfated polysaccharide is derived from Hibamata. 4. A pore conspicuous suppressing cosmetic comprising the pore contracting agent according to claim 1.