JPH06199650A - Bathing agent containing amino acid - Google Patents

Abstract

PURPOSE:To provide a bathing agent allowing to enjoy wet and smooth feeling of skin to the fullest measure and additionally allowing to enjoy refreshing feeling. CONSTITUTION:The objective bathing agent contains an amino acid, its salt and/or its derivative of >30wt.% and the other objective bathing agent contains tannin in addition to these components. The large amount of an amino acid allows to enjoy exceedingly higher degree of wet and smooth feeling than the ordinary bathing agent containing mainly inorganic salts. Tannin gives additionally refreshing feeling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathing agent containing an amino acid, an amino acid salt or / and an amino acid derivative in an amount of more than 30% by weight. The present invention belongs to a health care product which can be expected to have a moisturizing effect and a skin roughening preventing effect more than a conventional bathing agent containing an inorganic salt as a main component by adding a significant amount of amino acid.

[0002]

2. Description of the Related Art In recent years, many types of bath salts have been sold and used due to increasing awareness of health and beauty.
It is expected that not only the mental relaxation by taking a bath but also the moist and smooth feeling of the skin. Among them, Japanese Patent Publication No. 53-12 as a patent for a bathing agent containing an amino acid.
There is No. 59, but the purpose of the patent is to add an amino acid or a salt thereof in order to prevent the dye of the bath salt from being discolored by chlorine in the tap water. For the purpose of the above patent, the amino acid concentration in the bath is 10 pp.
It is described that about m is sufficient for the dye fading prevention effect, and that there is no difference in the fading prevention effect even at a higher concentration. From this, the amount used per bathing agent is usually from 15 g to 50 g on the market, but the mainstream amount is from 20 g to 30 g. Volume of bathtub from 200 to 3
When calculated assuming that it is 00L, the amino acid content in the product is about 10% at most in the product. In the examples of the above patents, it is stated that the amino acid content in the product is about 0.4 to 3.6% by weight. However, with such an amino acid content, it is unlikely that the skin feels moist and smooth.

A patent on a bathing agent containing a carbon dioxide gas-generating substance, in which an acrylic resin having a submicron particle size is added to the bathing agent in order to moisturize the skin after bathing and to give a smooth feeling 3-62690, Special Fairness 3
-62691, Japanese Patent Publication No. 3-62692)
In each case, a moist and smooth feeling is promoted by the combination of the oil component and the fine particles. However, when an oil component is added, a sticky feeling may be felt depending on the skin condition.

[0004]

DISCLOSURE OF THE INVENTION The present invention uses various amino acids or amino acid salts or amino acid derivatives which are constituents of the skin, in order to obtain a bathing agent which allows the skin to have a moisturizing and smooth feeling. It is also an object to use an effective amount of the compound and which of the compounds is particularly preferable, and to add a refreshing feeling.

[0005]

[Means for Solving the Problems] As bath agents, the amounts of various amino acids, amino acid salts, and amino acid derivatives that have moisturizing and smoothing effects on the skin, and the amount of moistening and smoothing among the compounds The types of amino acids that are more effective were examined. In addition, tannins that are expected to give a non-greasy and refreshing feeling were identified, and effective amounts were examined, and the present invention was completed.

That is, the present invention relates to a bathing agent containing an amino acid, an amino acid salt or / and an amino acid derivative in an amount of more than 30% by weight, and further to a bathing agent containing tannin.

The amino acids used in the present invention are alanine, glycine, threonine, serine, as amino acids, from the viewpoints of sensory evaluation, efficacy of amino acids, amino acid salts or / and amino acid derivatives on skin, and solubility and stability. As the proline, hydroxyproline and amino acid salt, alkali metal salts of aspartic acid and glutamic acid such as sodium and potassium, lysine, arginine, cysteine and histidine hydrochlorides or double salts of glutamic acid and lysine are preferable. Further, as the amino acid derivative, pyrrolidonecarboxylic acid alkali metal salt is preferable. These amino acids (hereinafter, referred to as amino acids A as a general term for amino acids, amino acid salts, and amino acid derivatives in the present invention) may be contained in the bathing agent in one kind or in many kinds. In addition, these amino acids A are L
Body, D body, or DL body, and the purity of amino acids A is not particularly limited.

From the results of sensory evaluation, the content ratio of the amino acid A to the weight of the bath agent product clearly shows the moisturizing and smooth feeling expected in the present invention when the concentration of the amino acid A is higher than 30 ppm in the bath. Since it can be expected, the amount used per bathing agent that is usually on the market is 1
5g to 50g, but mainly 20g to 30g
Is the amount used. Assuming that the volume of the bath tub is 200 L, it is necessary to contain the amino acid content in the product in an amount of more than 30% by weight in order to increase the concentration of the amino acid A in the bath to more than 30 ppm. The weight% referred to here means the weight% of amino acids or amino acid groups, and does not include the weight of alkali metal ions as counterions. In the present invention, the bath salt product may contain the above amino acid A as a main component in an amount of more than 30% by weight, and may of course contain amino acids other than the above. In the following description, it is assumed that the bathing agent used in the present invention is 25 g and the bath volume is 200 L.

Based on the sensory evaluation experiment, the above-mentioned concentration of amino acid A used is 30 ppm to 200 ppm in the bath, and the skin can be expected to have a moist and smooth feeling. Concentration is 125p
It will be pm. The effect is remarkable from the sensory evaluation test of the present invention 4
A concentration range of 0 ppm-100 ppm is particularly preferred. The reason is that even at a concentration of 100 ppm or more, a moist and smooth feeling almost equal to the concentration of 200 ppm can be obtained, and depending on the skin condition, stickiness may be felt at a concentration near 200 ppm. The concentration in this case means the total concentration of the amino acids and amino acid groups of the amino acids A, and does not include the weight of the alkali metal ion as a counter ion. The mixing ratio of each amino acid of the amino acids A is not particularly limited.

The bathing agent may be in the form of a solution,
Powder may be used. Since the amino acids A having the above effects have high solubility in water, there is no problem even with crystals,
In order to further improve the solubility, it is preferable to grind to make fine powder of 10 μ-100 μ.

Next, in order to add a non-greasy and refreshing feeling, it is preferable to add tannin, which is expected to have such an effect.
Tannins can be broadly classified into hydrolysis type and condensation type, but the former is subdivided into gallotannin and erroditannin, and the latter is simply condensed tannin and complex condensed tannin.

The type of tannin used in the present invention is more preferably tannin purified from hydrolyzable tannin. This is because the hydrolyzable tannin is chemically more stable than the condensed tannin, and further, is easily purified.

The hydrolyzable tannin used in the present invention has a different degree of galloylation, which indicates the number of pentagalloyl groups per mole of galloyl glucose, and a difference in molecular weight depending on the origin of the raw material. As raw materials of, Chinese quintet, Turkish gall, cod, arepo,
Miroboran, smack, etc. can be used.

The purity of tannin itself purified from the hydrolyzable tannin used in the present invention is 90% -99%,
95% -99% is preferable. In the present invention, a dimer or 3 of gallic acid which is an impurity in hydrolyzable tannin is used.
It is desired that the content of gallic acid such as a monomer is low.
The reason is that gallic acids are irritating to the skin (Journal of American College of Toxicolog
y Vol.4 (1985)). From this knowledge, the content ratio of gallic acids in the tannin used in the present invention is 10% or less, preferably 5% or less.

The amount of tannin contained in the bath agent containing the above amino acid A in an amount of more than 30% by weight is 1 in the bath agent.
0 wt% to 50 wt%, preferably 20 wt% to 40 wt% is good. That is, the tannin concentration in the bath is 25
ppm-50 ppm is preferable, and a refreshing feeling that is not sticky in sensory evaluation can be expected.

The bathing agent described in the present invention may optionally contain commonly used inorganic salts, organic acids, pigments, vitamins, fragrances, surfactants, crude drugs other than tannin, and the like. However, the weight ratio of these substances in the bath agent is at most 65% or less.

[0017]

In this way, the specific amino acids as described above are
By using a bathing agent that is allowed to exist in the bathtub at a specific concentration or more, it is possible to obtain a moist feeling and a smooth feeling of the skin. Further, among the tannins that are natural extracts, tannins purified from hydrolyzed tannins are allowed to be present in the bath at a certain concentration or higher, so that a refreshing feeling without stickiness on the skin can also be obtained.

The present invention will be specifically described below based on examples.

[0019]

EXAMPLE A mixture having the composition shown in Table 1 was ground with a pin mill, and bath agents 1 to 6 were prepared in 25 g packaging.

[Table 1]

[0020]

Example 1 Each 25 g package of bath salt 2 and bath salt 3 was added and dissolved in 200 L of water and heated to 41 ° C. The results obtained by requesting sensory evaluations from 10 men and 10 women are shown in Table 2. From the results shown in the table below, it can be seen that the moist feeling and the smooth feeling of the bath agent containing the amino acid A in an amount of more than 30% by weight in the product bath agent can be obtained.

[Table 2] In the composition of bath salt 2, only sodium glutamate is added to glycine, threonine, serine, proline, hydroxyproline, aspartic acid sodium salt, lysine hydrochloride, arginine hydrochloride, histidine hydrochloride, double salt of glutamic acid and lysine, and pyrrolidone. It was confirmed that, even when the sodium salt of carboxylic acid was used, the sensory evaluation was excellent, as in the case of the bath agent 2.

[0021]

Example 2 Bath agent 2 and bath agent 5 were added and dissolved in 200 L of water, and the mixture was heated to 41 ° C. With bath salt 5, amino acid crystals were crushed to 10 microns, but their solubility was poor. The sensory evaluation was requested to each of 10 men and women, and the obtained results are shown in Table 3. From the results in the table below, it can be seen that a specific amino acid, namely sodium glutamate, is superior to tryptophan even when the content of amino acids A is more than 30% by weight in the product.

[Table 3] In the composition of the bath agent 5, even when only tryptophan was replaced with tyrosine, phenylalanine, cystine, aspartic acid, and glutamine, the solubility was poor, and the bath agent 2 was superior in sensory evaluation.

[0022]

Example 3 Bath agent 1 and bath agent 3 were added and dissolved in 200 L of water, and the mixture was heated to 41 ° C. The results obtained by requesting sensory evaluations from 10 men and women are shown in Table 4. Also, the same results as in Table 4 were obtained when tannin gallate, tara tannin, and persimmon astringent tannin were added instead of the quintuple tannin of bath agent 1. Thus, from the results shown in the table,
It was found that the amino acid A content in the product was more than 30% by weight and the tannin content was 20% was superior to the conventional product in all items.

[Table 4]

[0023]

Example 4 Bath agent 3 and bath agent 6 were added and dissolved in 200 L of water, and the mixture was heated to 41 ° C. The results obtained by requesting sensory evaluation from 10 persons of each sex are shown in Table 5. From the results in the table below, it was found that a bath additive containing amino acids A in an amount of more than 30% by weight in the product bath additive gives a moisturizing feeling and a smooth feeling.

[Table 5]

[0024]

Example 5 Bathing agent 1 and bathing agent 4 were added and dissolved in 200 L of water to 41 ° C. The sensory evaluation was requested to 10 persons of each sex, and the obtained results are shown in Table 6. Further, the same results as in Table 6 were obtained when gallic acid tannin, tara tannin, or persimmon astringent tannin was added instead of the quintuple tannins of bath agent 1 and bath agent 4. Thus, from the results shown in the table, it was found that a bathing agent containing a large amount of amino acid A and tannin was organoleptically better than a bathing agent containing 30% by weight or less of an amino acid and tannin.

[Table 6]

[0025]

EFFECTS OF THE INVENTION The effect of the present invention is that the specific amount of amino acids in the bath agent is contained in the product in an amount of 30% by weight or more, and the concentration of the amino acids in the bath bath is set to a certain level or more, so that the skin becomes moist A feeling of smoothness is obtained remarkably. Furthermore, by containing tannin, which is a natural extract, a refreshing feeling without stickiness on the skin can be obtained.

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[Procedure amendment]

[Submission date] May 28, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

[0019]

EXAMPLE A mixture having the composition shown in Table 1 was ground with a pin mill, and bath agents 1 to 6 were prepared in 25 g packaging.

[Table 1]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

[0022]

Example 3 Bath agent 1 and bath agent 3 were added and dissolved in 200 L of water, and the mixture was heated to 41 ° C. The results obtained by requesting sensory evaluations from 10 men and women are shown in Table 4. Further, when gallic tannin , tara tannin, and persimmon astringent tannin were added instead of the quintuple tannin of bath agent 1, the same results as in Table 4 were obtained. Thus, from the results shown in the table, it was found that the amino acid A content in the product was more than 30% by weight and the tannin content was 20% was superior to the conventional product in all the items.

[Table 4]

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

[0024]

Example 5 Bathing agent 1 and bathing agent 4 were added and dissolved in 200 L of water to 41 ° C. The sensory evaluation was requested to 10 persons of each sex, and the obtained results are shown in Table 6. Also, instead of the quintuple tannins of bath salts 1 and 4, gallic tannins ,
The same results as in Table 6 were obtained when tara tannin and persimmon astringent tannin were added. Thus, from the results shown in the table, it was found that a bathing agent containing a large amount of amino acid A and tannin was organoleptically better than a bathing agent containing 30% by weight or less of an amino acid and tannin.

[Table 6]

Claims (5)

[Claims] 1. A bath agent containing an amino acid, an amino acid salt or / and an amino acid derivative in an amount of more than 30% by weight. 2. The bath salt according to claim 1, wherein the amino acid is selected from alanine, glycine, threonine, serine, proline and hydroxyproline. 3. The bath salt according to claim 1, wherein the amino acid salt is selected from aspartic acid, an alkali metal salt of glutamic acid, lysine, arginine, cysteine, histidine hydrochloride, and a double salt of glutamic acid and lysine. 4. The bath salt according to claim 1, wherein the amino acid derivative is an alkali metal salt of pyrrolidonecarboxylic acid. 5. The bath salt according to claim 1, which contains tannin.