JPH09143044A - Basic cosmetic without containing antimicrobial agent and germicide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a basic cosmetic, comprising a small amount of 1,3- butylene glycol without blending an antimicrobial agent and a germicide therein at all and preservable for a long period. SOLUTION: This basic cosmetic is obtained by blending 1,3-butylene glycol in an amount of >=3wt.%, preferably 1-15wt.% based on the total weight without containing an antimicrobial agent and a germicide having a fear of causing damage to the skin. The cosmetic can be applied to a basic cosmetic such as a cream for makeup, a milky lotion for makeup, toilet water, a solution for beauty, a face washing cream, a cold cream, a cleansing cream or a facial pack. The basic cosmetic prepared by blending a small amount of the 1,3- butylene glycol therein is capable of maintaining a stable state without growing a mold and without holding a phenomenon such as separation or deterioration. A large amount of the 1,3-butylene glycol need not be blended as opposed to a conventional conception.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a cosmetic cream,
Various basic cosmetics such as cosmetic emulsions, lotions, beauty essences, facial cleansers, cold creams, cleansing creams, and facial packs that can be stored for a long period of time without using any antibacterial agents or bactericides. Is.

[0002]

2. Description of the Related Art Basic cosmetics often consist of water, oils and fats, and various other components, and are therefore prone to putrefaction. Therefore, antibacterial agents (parabens and others) or bactericides (phenoxyethanol and others) usually It prevents this. However, these substances may cause damage to the skin and are not desirable components as a cosmetic compounding agent. 1,3-butylene glycol belongs to polyols, is a colorless, odorless, transparent viscous liquid, has no irritation to the skin, is water-soluble and has moderate wettability, and is widely used as a moisturizer in various basic cosmetics. It is a compounding agent used.

It is already known that 1,3-butylene glycol has antibacterial properties (Cosmetic raw material standard, second edition, note 903). But to date, 1,
3-Butylene glycol was widely compounded and used in the manufacture of basic cosmetics only as a moisturizer having antibacterial properties.
Moisturizing property is an important issue as a basic function of basic cosmetics, but there are many substances among the moisturizers that have not only the original moisturizing effect but also an antibacterial effect.

According to "Collection of Well-Known and Conventional Techniques (Cosmetics and Similar Products)" issued by the Japan Patent Office on August 21, 1984,
On page 1, "Preservative-free cosmetics", "Propylene glycol, dipropylene glycol, 1,3-butylene glycol having antibacterial properties, 30 to 5 to the aqueous phase
If 0% is added, sufficient antibacterial activity is exhibited, and therefore, addition of an antibacterial agent is unnecessary. It is described. This shows the technical recognition that the polyhydric alcohol has antibacterial properties, but in order to eliminate the need for the addition of general antibacterial agents, a considerably large amount must be added. .

The above technical recognition can be seen from the description in "Fragrance Journal, 1989, No. 2" (pages 68 to 71). That is, in the above document, Tadashi Watanabe refers to the antibacterial action of polyols as a moisturizer. According to this, 1,3-butylene glycol is effective against Gram-positive bacteria, Gram-negative bacteria, molds and yeasts. , But the spore bacterium did not die. Propylene glycol, dipropylene glycol, 1,3-
Butylene glycol is useful for reducing the amount of preservatives, but since it has a weak antibacterial effect, it is necessary to add a large amount for preserving cosmetics.

[0006] As described above, polyhydric alcohols are recognized as merely playing an auxiliary role for antibacterial agents, and were used in basic cosmetics for the main purpose of moisturizing. As a basic cosmetic containing no agent, if polyhydric alcohol is used to impart antiseptic properties, as described above, the object is not achieved unless a large amount of 30 to 50% is used in the aqueous phase. Was thought to be impossible.

[0007]

DISCLOSURE OF THE INVENTION The present invention provides a basic cosmetic product which can be maintained in a stable state for a long period of time without adding any antibacterial agent and bactericidal agent which may damage the skin. The purpose is to do.

[0008]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventor has found that 1,3-butylene glycol can be added to all basic cosmetics in a polyhydric alcohol by adding a very small amount. It has been found that can be maintained in a stable state over a long period of time. That is, 1,3-butylene glycol corresponding to 1 to 15% of the total weight was added to the composition to produce various basic cosmetics containing no antibacterial agent or bactericide, and the result of long-term storage It was confirmed that all the basic cosmetics containing 3% or more of 1,3-butylene glycol can be kept in a stable state. The present invention was made based on the above findings, and contains 1,3-butylene glycol corresponding to 3% or more of the total weight in the composition, and contains neither an antibacterial agent nor a bactericide at all. It is a basic cosmetic product characterized by that.

The basic cosmetics include cosmetic creams, cosmetic emulsions, lotions, beauty essences, facial cleansing creams, cold creams, cleansing creams, facial packs, etc. It can be obtained by adding a necessary amount of 1,3-butylene glycol to the compounding raw material of, and preparing by a conventional method. As described above, the basic cosmetics of the present invention obtained by blending 1,3-butylene glycol in an amount of 3% or more of the total weight maintain a stable state in which no mold is generated and neither separation nor deterioration phenomenon is observed. It is not necessary to mix a large amount of 1,3-butylene glycol as in the conventional concept.

[0010]

[Examples] Examples of the present invention will be described below, together with the storage test results of the products obtained. Example 1 The mixing ingredients of the oil phase and the water phase of the cosmetic cream shown in Table 1 are mixed, respectively, and then the oil phase and the water phase are mixed under heating to obtain a cosmetic cream.

[0011]

[Table 1]

(Example 2) The mixing ingredients of the oil phase and the water phase of the cosmetic emulsion shown in Table 2 are mixed, respectively, and then the oil phase and the aqueous phase are mixed under heating to obtain a cosmetic emulsion.

[Table 2]

Example 3 A lotion is obtained by mixing the ingredients of the lotion shown in Table 3.

[Table 3]

(Embodiment 4) The cosmetic materials shown in Table 4 are mixed to obtain a cosmetic solution.

[Table 4]

(Example 5) [0015] The ingredients of the oil phase and the water phase of the face cleansing cream shown in Table 5 are mixed respectively, and then the oil phase and the water phase are mixed under heating to obtain a face cleansing cream.

[Table 5]

(Example 6) The mixing ingredients of the oil phase and the water phase of the cold cream shown in Table 6 were mixed, respectively,
A cold cream is obtained by mixing the oil phase and the water phase under heating.

[Table 6]

(Example 7) After mixing the blending raw materials of the oil phase and the water phase of the cleansing cream shown in Table 7, the oil phase and the water phase are mixed under heating to obtain a cleansing cream.

[Table 7]

(Example 8) After mixing the raw materials for the aqueous phase of the facial pack shown in Table 8, the oil phase shown in Table 8 was mixed under heating to obtain a facial pack.

[Table 8]

The results of leaving the products of Examples 1 to 8 at room temperature for one year or more are shown in Tables 9 to 16.

[Table 9]

[0020]

[Table 10]

[0021]

[Table 11]

[0022]

[Table 12]

[0023]

[Table 13]

[0024]

[Table 14]

[0025]

[Table 15]

[0026]

[Table 16]

As described above, all the products containing 3 to 15% of 1,3-butylene glycol have sufficient antibacterial properties. Some of the above products are 1,3-
Even if the amount of butylene glycol blended was less than 3%, there were some that did not change due to long-term storage, but it is presumed that this is probably related to the effect of pH.

[0028]

EFFECTS OF THE INVENTION According to the present invention, an extremely small amount of 1,3-butylene glycol is added for a long period of time without adding an antibacterial agent and a bactericide which may damage the skin. A basic cosmetic product that can be maintained in a stable state is provided.

Claims (1)

[Claims] 1. An antibacterial agent and a bactericidal agent, characterized in that the compound contains 1,3-butylene glycol in an amount of 3% or more of the total weight and contains neither an antibacterial agent nor a bactericidal agent at all. Basic cosmetics not included.