JPH09194321A - Antiseptic for cosmetics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an antiseptic for cosmetics capable of manifesting remarkably high antiseptic and bactericidal effects by using fine powder of a specific mineral and its action to enhance surface activities of water, alcohol, etc. SOLUTION: In this antiseptic for cosmetics, fine powder of a material called tourmaline is used. Tourmaline is a silicate mineral containing boron and belongs to a trigonal or a hexagonal hemimorphic hemihedral form which is asymmetric in above and below. Its chemical formula is complicated and the typical one is expressed by the formula (X is Mg, Fe, Li, etc.). Tourmaline is more excellent in chemical resistances against acids, alkalies, etc., than silica. Thus, when mixed in cosmetics, no chemical reaction occurs with the acids and the alkalies included in the cosmetic components. When tourmaline is brought into contact with water, it is electrolyzed by its action as permanent electrodes and has a function to emulsify and disperse an oil component in water as hydroxyl ions formed by the electrolysis which exhibit a surface activity. The fine particles have preferably <=10μm particle size.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a preservative for cosmetics using fine powder of a substance called tourmaline or tourmaline.

[0002]

2. Description of the Related Art Since cosmetics have a role of supplementing the action of skin secretions (sebum membranes),
It can easily serve as a nutrient source for microorganisms and can be a place of growth.

Cosmetics contaminated with microorganisms cause deterioration in quality such as odor, deterioration, and generation of mold, and it is necessary to take measures to prevent this.

Therefore, most cosmetics have antiseptic,
Antiseptic and bactericidal agents are added for the purpose of anti-vibration to prevent pollution over time.

The above-mentioned preservatives generally used are relatively toxic, and it is not preferable to ingest various preservatives from various cosmetics. It is defined by the Pharmaceutical Affairs Law. Antiseptics and bactericides approved for use in cosmetics include benzoic acid, benzoates, salicylic acid, salicylates, sorbic acid and its salts, and phenols.

[0006]

As described above, while these preservatives enhance the shelf life of cosmetics, they are highly toxic and may adversely affect the human body. Recently, no preservatives have been added. Demand for so-called natural cosmetics is increasing.

However, such natural cosmetics are
Since it requires refrigeration or has to be used within a short period of time after production, there are problems that it is difficult to get into the distribution process and the cost is high.

The present invention has been made in view of the above-mentioned conventional problems, and provides a cosmetic preservative capable of obtaining a cosmetic antiseptic / sterilizing effect by a substance harmless to the human body. The purpose is to

[0009]

The present invention achieves the above object by a cosmetic preservative comprising fine tourmaline powder.

That is, the present inventor has paid attention to the function of tourmaline for producing water having surface activity by a reaction with a permanent electrode, as described in Japanese Patent Publication No. 7-38987, for example. It was confirmed that not only water, but also alcohols and fats and oils which are cosmetic ingredients have a similar effect, and that it can be used as an alternative to the preservatives of conventional chemical compounds.

Tourmaline is a silicate mineral containing boron,
Belonging to the trigonal or hexagonal heteropolar image family, this heteropolar image is vertically asymmetric, its chemical formula is complicated, and its typical one is
It is shown in the following formula.

3 {NaX ₃ Al ₆ (BO ₃ ) ₃ Si ₆ O
₁₆ (OHF) ₄ } (X = Mg, Fe, Li, etc.)

Such tourmaline crystals are slightly different depending on the kind of the metal indicated by the symbol X, but are more resistant to chemicals such as acids and alkalis than quartz. Therefore, even if it is mixed into cosmetics, chemical changes do not occur due to acids or alkalis in the cosmetic ingredients.

Such tourmaline is described in Japanese Patent Publication No. 7-389.
As disclosed in Japanese Patent Publication No. 7, a permanent magnet-like electrode is provided, and water having surface activity is produced by the reaction, or a hydrocarbon chain is fragmented and decomposed by an electrode reaction to obtain a low molecular weight. It has the function of

In particular, when water comes into contact with tourmaline, it is electrolyzed by the action of the permanent electrode of the tourmaline to generate hydrogen ions H.
⁺ Combines with water molecule to form H3 O ⁺ (hydronium ion)
From the other electrode and OH ⁻ or H ₃ O ₂ ^—
(Hydroxyl ion) is formed. Since the moving speed of H ⁺ forming hydronium ions is faster than that of hydroxyl ions, it is relatively easily discharged and deposited on the electrode surface to become H 2 and released as gas.
On the other hand, hydroxyl ions exhibit surface activity and emulsify and disperse an oil component in water.

Tourmaline, in addition to these surface-active effects,
It has the effects of shifting the pH value of water toward neutrality and exhibiting a weak reducing action.

Therefore, when tourmaline fine powder is mixed with cosmetics, it is possible to suppress the decay of the cosmetics and the growth of bacteria due to the above function.

In addition, the tourmaline fine powder preferably has a particle size of 10 μm or less in order to prevent the skin from being roughened, except when the function as an abrasive such as toothpaste is required. . Furthermore, in order to exert the above-mentioned function as tourmaline, it is desirable to make the particle diameter smaller, which is a technical limit of atomization of 0.1 μm.
It is good to make it small.

Regarding the influence on the human body, especially on the skin, as for tourmaline, for example, clothing in which the powder is fixed to cloth or fibers has been sold in large quantities in recent years, but it is not only harmless at all, but also has a physiological effect on the skin. It even has the function of increasing and thus improving health.

A very good antibacterial effect has been confirmed for mesitillin-resistant Staphylococcus aureus so-called MRSA.

The production of tourmaline fine powder of the present invention is as follows.

First, a tourmaline ore having a high content (99% or more) is excavated from the tourmaline deposit, crushed into an appropriate size and washed, and further crushed into small pieces in about 3 to several steps, and finally. The particle size is 1 μm or less, preferably 0.1 μm or less.

The mixing ratio of tourmaline to cosmetics varies depending on the type of cosmetics.

Further, even in the same kind of cosmetics, the weight ratio is 1 in order to obtain the function as a preservative, though it depends on the required viscosity, contained oily component and other powder component.
% Or less is sufficient.

For example, when it is used for toothbrushing, the hardness of tourmaline can sufficiently function as an abrasive,
A powder having a particle size of 10 to 20 μ which is required for ordinary toothpaste is preferable.

Particularly, tourmaline has a Mohs hardness of 7.0.
It's fairly hard at ~ 7.5, so it's perfect for brushing your teeth by removing cigarette tar and whitening your teeth.
0%) is preferably mixed.

[0027]

INDUSTRIAL APPLICABILITY As described above, the present invention uses tourmaline fine powder, which is completely harmless to the human body and enhances the activity of the skin in some cases, as a preservative, and thus enhances the surface activity of water or alcohol. Therefore, extremely high antiseptic
It has an excellent effect that a bactericidal effect can be obtained.

Claims (1)

[Claims] 1. A preservative for cosmetics comprising tourmaline fine powder.