JPH07285845A - Skin cosmetic - Google Patents

Abstract

PURPOSE:To obtain a skin cosmetic excellent in skin beautifying effects such as an improvement in skin conditions, e.g. insufficient gloss or fine wrinkles or impartment of moistness due to holding of skin moisture. CONSTITUTION:This skin cosmetic contains a precipitate obtained by extracting a fruit of Gardenia jasminoides Ellis forma grandiflora Makino or a stylar part of Crocus sativus L. with water or a hydrous alcohol, treating the resultant extracted solution with an alkali and then regulating the pH thereof to 4-6 as an active ingredient in an amount of preferably 0.001-1wt.% based on the whole cosmetic expressed in terms of a dried substance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin cosmetic, and more particularly to a skin cosmetic having an effect of improving the condition caused by the dryness of the skin and having an excellent skin beautifying effect.

[0002]

2. Description of the Related Art Generally, when skin dryness is exacerbated in winter or due to excessive skin washing, aging, constitution decrease due to constitution, etc., the gloss of the skin is lowered and fine wrinkles become noticeable. Adverse effects such as bad glue occur, and as a result, a phenomenon of rough skin occurs. Furthermore, observing the skin tissue structure at this time, the basement membrane structure and the arrangement of the stratum corneum are disturbed, and the state is deteriorated to a state where healthy physiological functions cannot be fulfilled.

Conventionally, in order to improve these skin conditions, a decrease in the water content of the stratum corneum is prevented, and normal skin structure and
It is necessary to maintain the function, and various methods have been studied so far. As a result, the proposed methods include a method of suppressing transepidermal water loss by using an occlusive agent having good adhesion to the skin and having hydrophobicity, and a sugar alcohol having moisture absorption or moisturizing ability or a large amount. A method of increasing the skin hydration effect by adding a moisturizing agent such as organic acid salts of
In addition, there was a method of blending vitamins, hormones and the like to promote the activation of metabolism and repair keratin.

[0004]

However, none of the above-mentioned conventionally known methods have sufficient skin water-retaining ability and have little effect on improving keratin, and when an occlusive agent is used, oil is not used. There is a drawback that it gives an unpleasant feeling such as sticky, and on the other hand, even if a moisturizing agent is used, a large amount must be added in order to enhance the effect, and as a result, a sticky feeling or slimy feeling etc. There was a problem of giving an unpleasant feeling. In addition, vitamins and hormones have problems in safety and stability.

The present invention has been made in view of the above circumstances, and it improves the condition of the stratum corneum of the skin caused by dryness such as lack of gloss and fine wrinkles, moisturizes the skin with sufficient water retention, and improves skin roughness or It is an object of the present invention to provide a cosmetic which has a so-called beautiful skin effect of preventing and adjusting texture, and having almost no problem in terms of feel.

[0006]

Means for Solving the Problems As a result of intensive studies for solving the above problems, the present inventor has found that an extract obtained from a specific plant is further subjected to a specific chemical treatment to obtain a precipitate. Furthermore, they found that the skin water retention function, the normal skin structure, and the function promoting function are high, and that they have an excellent skin-beautifying effect, and based on this, the present invention was completed.

That is, the present invention uses the gardenia fruit of the gardenia plant of the family Rubiaceae or the saffron part of the plant of the family Iridaceae, extracts them with water or hydrous alcohol, and treats the resulting extract with alkali. , PH 4
It is preferably 0.001 to 1% by weight in terms of dry matter, based on the total amount of cosmetics, using the precipitate obtained by adjusting to 6 as an active ingredient.
Particularly preferably, the present invention relates to a skin cosmetic characterized by containing 0.01 to 0.5% by weight.

The present invention will be described in detail below.

The precipitate applied to the present invention is a flower column of gardenia jasminoides, a flowering plant of the genus Gardenia jasminoides, or a saffron (scientific name: Crocus sativum) of the family Iridaceae, which is called Chinese radish in the Chinese medicine. Parts can be obtained as a raw material.

In the present invention, the above raw materials are used. Preferably, the raw materials are preferably coarsely pulverized by a cutting machine or the like to form a powder, and then water or methanol, ethanol, propanol, t-
Extraction is performed by ordinary cold soaking or hot soaking using a hydrous alcohol such as butanol as an extraction solvent.

This is then preferably filtered, centrifuged,
After obtaining an extract or an extract by a method such as concentration and drying, an alkali such as sodium hydroxide, potassium hydroxide, or ammonia is gradually added, preferably in the form of an aqueous solution to adjust the pH.
Is set to 10-11.

After that, the alkaline solution is aged by leaving it at room temperature for a whole day and night, and then an acid such as an inorganic acid such as hydrochloric acid, sulfuric acid, nitric acid or an organic acid such as citric acid, tartaric acid, malic acid is added to adjust the pH. When 4 to 6 is prepared, a precipitate is formed. This precipitate is washed with water and dried by a method such as freeze-drying to obtain a dry solid precipitate. This precipitate may be subjected to column chromatography, HP
It may be purified by LC (high performance liquid chromatography), activated carbon or activated clay.

Hereinafter, the present invention will be described in more detail with reference to production examples, but the present invention is not limited thereto.

<Production Example 1> To 500 g of crushed gardenia fruit (Sanshishi), 5 l of 50% ethanol was added, and the mixture was extracted at room temperature for 3 days. The obtained extract was concentrated and dried to obtain a gardenia extract. It was Next, this gardenia extract was redissolved in distilled water, and then a sodium hydroxide solution was gradually added to this solution to make a final concentration of 0.85%. This alkaline solution was allowed to stand overnight at room temperature. Then, hydrochloric acid was added to adjust the pH to 5.5, whereby a precipitate was formed. The precipitate was washed with water and freeze-dried to obtain 7.8 g of the desired red-yellow dry solid gardenia precipitate.

<Production Example 2> 100 g of saffron was cut into small pieces by a cutting machine, 1 l of water was added thereto, and the mixture was extracted for 24 hours and then filtered. This operation was repeated twice, and the filtrates were combined, concentrated and dried to obtain a saffron extract. Next, the saffron extract was redissolved in distilled water, and potassium hydroxide solution was gradually added to this solution to give a final concentration of 2.0%.
And This alkaline solution was allowed to stand overnight at room temperature. Thereafter, hydrochloric acid was added to adjust the pH to 4.0, and a precipitate was produced. This precipitate was washed with water and freeze-dried to obtain the desired red-yellow dry saffron precipitate 2.4.
g was obtained.

The gardenia or saffron precipitate according to the present invention obtained as described above is contained in a skin cosmetic composition.
Although it may vary depending on the dosage form, it is usually 0.001 to 1% by weight, preferably 0.01 to 1% by weight in terms of dry matter.
It is contained in the range of 0.5% by weight. Here, if the content of gardenia or saffron precipitates in the skin cosmetics is less than 0.001% by weight, the skin beautifying effect cannot be sufficiently obtained, and conversely even if the amount exceeds 1% by weight. The above range is preferable because it is difficult to expect the enhancement of the effect commensurate with the increased amount and the coloring of the preparation becomes strong.

The skin cosmetics of the present invention include, in addition to the gardenia or saffron precipitates which are the above-mentioned active ingredients, various components and additives used in ordinary skin cosmetics, such as inorganic pigments and organic pigments. Inorganic powder, organic powder, hydrocarbons, silicones, esters, triglycerides, lanolin, waxes, waxes, animal and vegetable oils, surfactants, polyhydric alcohols, sugars, vitamins, amino acids, Antioxidants, preservatives, fragrances, thickeners and the like can be added.

The form of the skin cosmetic of the present invention is not particularly limited, and examples thereof include those usually used in skin cosmetics such as creams, emulsions, oils, lotions, packs and ointments.

Next, in order to demonstrate how the skin cosmetics of the present invention are excellent in terms of skin beautifying effect, the following Examples 1 and 2 are given.
Using the skin cosmetics shown in 2, the actual use test was conducted to confirm the efficacy. As comparative products, Examples 1 and 2 described below were used.
Was prepared by substituting the gardenia cosmetics (Comparative Product 1) prepared by replacing the gardenia extract or saffron precipitate in Example 1 with the gardenia extract or saffron extract which was the intermediate product of the above Production Examples 1 and 2. A skin cosmetic (comparative product 2) was used. The test method is as shown below.

<Long-term continuous use test> (Test method) Japanese woman 60 with dry face and fine wrinkles
Named as panelists, 10 people were randomly divided into 6 groups (A to F groups). A lotion of the present invention is applied to the face of group A, a lotion of comparative product 1 is applied to the face of group B, a lotion of comparative product 2 is applied to the face of group C, and a lotion is applied to the face of group D. The emulsion of the invention product, the emulsion of Comparative product 1 on the face of group E, and the emulsion of Comparative product 2 on the face of group F were each used for 6 weeks. The improvement state and the state of spontaneous exacerbation of each evaluation factor after 6 weeks were evaluated according to the evaluation criteria, and the comparison between groups was performed. The results are shown in Table 1.

[0021]

[Table 1]

As shown in the results of Table 1, the skin cosmetics of the present invention are superior to the skin cosmetics of the comparative products in which the untreated extract and purified water are substituted, in all the evaluation items. The results were obtained, and it was proved that the dry feeling and fine wrinkles were remarkably improved, and the skin-beautifying effect was excellent. At the same time, it was also confirmed that the skin cosmetic of the present invention has almost no harmful effects such as stickiness during use.

[0023]

EXAMPLES Examples of the present invention will be shown below. The following blending ratios are parts by weight.

Example 1. Lotion (A) Ethanol 15.0 Gardenia precipitate (Production Example 1) 0.2 1,3-Butylene glycol 2.0 Polyoxyethylene (50) Hydrogenated castor oil 1.0 (B) Ethylparaben 0.05 Fragrance Material 0.05 Citric acid 0.1 Sodium citrate 0.15 Purified water 81.45

(Preparation method) The components of (A) are combined and dissolved at room temperature. On the other hand, each component (B) is also dissolved at room temperature, and this is added to the component (A) to solubilize it.

Example 2. Emulsion (A) Polyoxyethylene (20) hydrogenated castor oil 1.5 Coconut oil fatty acid monoglyceride 1.0 Oleic acid triglyceride 7.5 Saffron precipitate (Production Example 2) 0.05 (B) Glycerin 2.5 Purified water 87.25 (C) Fragrance 0.2

(Preparation Method) The ingredients of (A) are combined, heated and mixed to 70 ° C. Combine each component of (B) to 7
Heat mix to 0 ° C, add (A) formulation to this and emulsify,
Add (C) while cooling.

Example 3. Cream (A) Vaseline 18.0 Cetanol 8.0 Polyoxyethylene (20) oleyl ether 1.4 Sorbitan monostearate 0.8 Gardenia precipitate (Production Example 1) 0.5 (B) Ethylparaben 0.3 Pure Water making 70.8 (C) Fragrance 0.2

(Preparation Method) The components of (A) are combined, heated and mixed to 70 ° C. Combine each component of (B) to 7
Mix by heating to 0 ° C, add (B) to (A) and emulsify.
Cool to ° C and add (C).

Example 4. Hydrophilic Ointment (A) POE (30) Cetyl Ether 2.0 Glycerin Monostearate 10.0 Liquid Paraffin 10.0 Vaseline 4.0 Cetanol 5.0 Preservative 0.2 Gardenia Precipitate (Production Example 1) 0 .5 Saffron precipitate (Production Example 2) 0.5 (B) Propylene glycol 10.0 Purified water 57.8

(Preparation method) Combine the components of (A) and
Heat to 0 ° C. The components of (B) are combined and heated to 80 ° C. While stirring the formulation of (A), the formulation of (B) is added thereto, and the mixture is stirred to emulsify and then cooled.

[0032]

EFFECTS OF THE INVENTION According to the present invention, it goes without saying that the skin-beautifying effects such as improvement of the stratum corneum state caused by dryness such as lack of luster and fine wrinkles and moisturization by retaining skin moisture are remarkably excellent. That is, it can be used without any harmful effect.

Claims (3)

[Claims] 1. Using gardenia fruits of the gardenia genus plant of the Rubiaceae family or saffron of the iris family of saffron, these are extracted with water or hydrous alcohol, and the resulting extract is treated with an alkali to adjust pH. A skin cosmetic comprising a precipitate obtained by adjusting to 4 to 6 as an active ingredient. 2. The content of the precipitate is 0.001 to 1% by weight as dry matter based on the total amount of the cosmetic.
The listed skin cosmetics. 3. The skin cosmetic according to claim 1, wherein the content of the precipitate is 0.01 to 0.5% by weight in terms of dry matter based on the entire cosmetic.