JPS60215613A - Weak-acidity bath preparation - Google Patents

Abstract

PURPOSE:A weak-acidity bath preparation that is obtained by adding vitamins to a bath preparation which contains a carbonate and an acid and shows a weak- acidity pH in the bath, thus showing enhanced synergism in blood flow stimulation, skin chapping prevention, skin aging prevention and no chill after bathing. CONSTITUTION:The objective bath preparation is formed by adding 0.001-10%, preferably 0.01-2%, based on the total composition, of vitamins such as vitamins A, B2, B6, C, D preferably D2, E, F or H to a weak-acidity bath preparation containing a carbonate such as sodium carbonate or potassium carbonate and an acid such as succinic, fumaric and phosphoric acid. It shows good effect to stimulate blood flow in skins, since carbon dioxide exists in the gas form in the bath.

Description

[Detailed Description of the Invention] The present invention is a novel weakly acidic bath additive, and more specifically, the present invention is a novel weakly acidic bath additive, and more specifically, a bath additive that contains carbonate and acid and exhibits a weakly acidic bath pH during use, in which vitamins are blended. synergistically has the effect of promoting health, promoting blood circulation, preventing rough skin, preventing skin aging, and keeping warm.
Concerning weakly acidic bath salts.

Bath additives are generally a mixture of plain salts such as mirabilite, borax, sulfur, salt, carbonate, etc., combined with fragrances, colorants, plant extracts, organic acids, etc., and are used to add scent and color to the bath, and to add color to the skin. By providing moderate stimulation to the body, it activates blood circulation, relieves fatigue, and improves metabolism. Among these bath additives, there are effervescent bath additives that combine carbonate and acid, which generate carbon dioxide bubbles in the bath water.
It has the effect of increasing the feeling of relaxation and refreshment and making bathing more enjoyable.

However, conventional foaming bath additives are neutral or slightly alkaline, and almost all of the carbon dioxide gas generated does not dissolve in the water and evaporates into the air, so the carbon dioxide bubbles are simply a sensation. It only had a mechanical effect.

Therefore, the inventors of the present invention conducted various studies and created a bath additive that contains carbonate and acid and makes the pH of the bath water slightly acidic, thereby retaining carbon dioxide gas in the bath liquid.

We have developed a weakly acidic bath additive that promotes blood circulation and does not cause the bath to feel cold. Furthermore, the present inventor has now completed the present invention by discovering that when vitamins are added to this product, the blood circulation promotion effect, skin roughness prevention IF, skin aging prevention, heat retention effect, etc. are synergistically enhanced.

That is, the present invention provides a weakly acidic bath additive containing a carbonate and an acid, which is blended with vitamins.

The carbonate salts added to the weakly acidic bath additives of the present invention include:
For example, hydrogen carbonate l-1) Rum, sodium carbonate, sodium sesquicarbonate, potassium hydrogen carbonate, potassium carbonate,
Examples include potassium sesquicarbonate, ammonium bicarbonate, ammonium carbonate, and ammonium sesquicarbonate, and these can be used alone or in combination of two or more.As the acid, both organic acids and inorganic acids can be used. Although it can be used, water-soluble and solid ones are preferred.

Examples of organic acids include straight chain fatty acids such as formic acid, acetic acid, propionic acid, butyric acid, and valeric acid; oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, fumaric acid, maleic acid, phthalic acid, Dicarboxylic acids such as isophthalic acid and prephthalic acid; acids and amino acids such as glutamic acid and aspartic acid; glycolic acid, lactic acid, hydroxyacrylic acid, α-oxybutyric acid, glyceric acid, tartronic acid, malic acid, tartaric acid, citric acid, and salicylic acid (o, m.

p), oxyacids such as gallic acid, mandelic acid, tropic acid, ascorbic acid, gluconic acid; cinnamic acid, benzoic acid, phenylacetic acid, nicotinic acid, kainic acid, sorbic acid, pyrrolidonecarboxylic acid, trimellitic acid, benzenesulfone acid, toluenesulfonic acid, and acid salts of these organic acids. Examples of inorganic acids include phosphoric acid, potassium dihydrogen phosphate, sodium dihydrogen phosphate, sodium saliva sulfate, potassium sulfate, sodium pyrosulfite (sodium metabisulfite), potassium pyrosulfite (potassium metabisulfite), Examples include acidic sodium hexametaphosphate, acidic potassium hexametaphosphate, acidic sodium birophosphate, acidic potassium pyrophosphate, and sulfamino acid. Among these, aliphatic dicarboxylic acids such as cono-phosphoric acid, fumaric acid, phosphoric acid, and acid salts thereof are preferred.

Furthermore, as vitamins, lower fatty acid esters such as vitamin A or its acetate, lower fatty acid esters such as vitamin B2 or its tetrabutyrate,
Vitamin B or lower fatty acid esters such as its diazilate, vitamin C or its mono- or di-
Lower fatty acid esters such as acylate or their phosphoric acid ester salts, vitamin D (vitamin D2), lower fatty acid esters such as vitamin Ei and sono acetate, vitamin F1, vitamin H, pantothenic acid, nicotinic acid,
Examples include vitamin E nicotinic acid ester and Inosit.

The blending amount of carbonate and acid in the weakly acidic bath additive of the present invention is such that when the solvent is added to the bathwater, the bathwater becomes weakly acidic, i.e., the pH of the 0.01 aqueous solution of the bathant is 4 to 4. 7. In particular, it is necessary to adjust the pI (6.0 to 6.7).If the pH is lower than 4, it will be very irritating to the skin and may damage the bathtub. If the pH exceeds 7, the effect of the present invention cannot be achieved.
This is based on the principle that carbon dioxide exists as 02 molecules and exhibits a blood flow promoting effect, but when the pH is alkaline, carbon dioxide exists as co, ``- ions or HCO3- ions, so no such effect is observed.

The blending amounts of carbonate and acid that meet these conditions vary depending on their type, but the carbonate should be 5 to 80% by weight, especially 10 to 50%, and the acid should be 10 to 8% by weight, based on the total composition.
0%, especially 15 to 50% is preferred.

Vitamins can be added in a wide range of locations, but generally 0.001 to 10% of the total composition, especially 0.01% of the total composition.
~2 inches is preferred.

Furthermore, the bath additives of the present invention generally contain fragrances, pigments, active ingredients of hot springs, proteolytic enzymes, seaweed extracts, and 7" sodium ruginate.

The effects can be further enhanced by adding lanolin, silicone, herbal medicines, or extracts of the seven extracts.

The weakly acidic bath additives of the present invention include powders, granules, crystals, tablets, etc.
Particularly preferably, they can be in the form of tablets, and for their formulation, excipients, binders, disintegrants,
A lubricant or the like may also be added.

As shown above, the slightly acidic bath additive of the present invention has a pH that is approximately the same as that of human skin, so it has a favorable effect on the skin.

Moreover, the return limit gas generated when pouring into the bath water exists as ions in alkaline conditions, so it has no effect on promoting blood flow, or, as uninvented, in acidic conditions, it exists as CO2 molecules and has an excellent effect on promoting blood circulation in the skin. be effective.

Next, implementation and examples will be given.

Example 1 Bath additives having the compositions shown in Table 1 were prepared, and each bath additive had a concentration of 0.0
A 1% aqueous solution was added to bath water, and 30 panelists used it according to the usual method for one month.The overall evaluation as a bath additive (overall feeling of use), the feeling of warmth, whether or not the water cooled, and the skin. The moist feeling and effect on preventing rough skin were investigated.

Below 8 Table 1 The result is 9 in Table 2.

Table 2

Claims (1)

[Claims] 1. A weakly acidic bath additive containing carbonate and acid, which is characterized by containing vitamins.