JP2000044454A - Oily cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an oily cosmetic excellent in persistence of moisturizing effects, extremely rarely causing a feeling of pressure and a blocking feeling for skin and excellent in thermal stability and stability with time. SOLUTION: This oily cosmetic contains at least one or more kinds of vegetable extract oils having >=60 h time until the peroxide value attains 100 when continuously injecting clean air at 2.3 mL/s (±10%) into an oil liquid kept at 98 deg.C in a hermetically sealed glass container and a milk fat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil-based cosmetic which is excellent in persistence of a moisturizing effect, has a very small pressure and occlusion on the skin, and has excellent heat stability and day-to-day stability.

[0002]

2. Description of the Related Art Plant extract oils have been used in oil-based cosmetics such as lipsticks, lip balms, oily lotions, etc. because they have a uniform freshness, are less sticky, have an excellent moisturizing effect, and have less burden on the skin. However, cosmetics containing a large amount of vegetable extract oil have poor heat stability, poor day-to-day stability, and cannot be used due to smell. In recent years, it has been replaced by oily raw materials by stable chemical synthesis. However, the feeling and finish that is less sticky and less peculiar to vegetable extracted oils that cannot be obtained by the combination of single oily raw materials by chemical synthesis is also the most desired quality for oily cosmetics, and the consumer image is also very good, The development of highly stable oily cosmetics containing a large amount of these compounds has been strongly desired. On the other hand, cosmetics containing a large amount of vegetable extract oil have a problem that when used, they have a strong moist feeling, but their effects last only for a relatively short time.

[0003]

The object of the present invention is to provide an oily cosmetic which is excellent in the persistence of the moisturizing effect, has very little thermal pressure and occlusive feeling on the skin, and has excellent heat stability and aging stability. The purpose is.

[0004]

Means for Solving the Problems The present inventor has conducted intensive studies in view of the above situation, and as a result, 2.3 ml / s of clean air in an oil solution kept at 98 ° C. in a closed glass container.
(± 10%) at least one or two or more vegetable extracted oils whose time until the peroxide value reaches 100 when continuously injected at (± 10%) and milk fat. It has been found that an oily cosmetic that solves the above problems.

That is, according to the present invention, clean air is supplied in an oil solution kept at 98 ° C. in a closed glass container at a rate of 2.3 ml / ml.
s (± 10%) when peroxide value is 100
The oil-based cosmetic is characterized by containing at least one or two or more plant-extracted oils in which the time required to reach 60 hours or more and milk fat.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The oil-based cosmetic of the present invention is substantially free of water, ie, excluding water-in-oil (W / O) or oil-in-water (O / W) cosmetics. It can be used as a make-up cosmetic such as a foundation, lipstick, blusher, etc. or a basic cosmetic by a conventional method.

[0007] 2.3 ml of clean air in an oil liquid kept at 98 ° C in a closed glass container used in the present invention.
/ S (± 10%) when the peroxide value is 10
A plant extract oil whose time to reach 0 is 60 hours or more is a known substance. For example, the amount of oleic acid in its fatty acid composition accounts for 90% or more, and the amount of linoleic acid and linolenic acid is 1%. % Or less sunflower oil, acid value 0.5
There are the following highly purified jojoba oil, olive oil, castor oil, olive squalane, etc., which are easily available.

[0008] Clean air is supplied at 2.3 ml / s (± 10%) in an oil solution kept at 98 ° C in a closed glass container.
The method of measuring the time required for the peroxide value to reach 100 when continuously injected in the above method is adopted as an AOM test in a standard oil and fat analysis test method by the Japan Oil Chemical Association. The peroxide value is also specified in the same law.

The milk fat used in the present invention is a known substance, which is obtained by decolorizing, deodorizing and purifying lipid obtained from milk.

The preferred amounts of the vegetable extract oil and milk fat used in the present invention are 10.0 to 80.0% by weight of the vegetable extract oil and 3.0 to 10% by weight of the milk fat based on the total amount of the oily cosmetic. .0
% By weight. If the amount of the vegetable extracted oil is less than 10.0% by weight and the amount of milk fat is less than 3.0% by weight, the persistence of the moist feeling may be reduced by a person, and the effect of the present invention may not be exhibited. Also, when the vegetable extract oil is more than 80.0% by weight and the milk fat is more than 10.0% by weight,
The stability of the product over time may deteriorate, which is not preferable.

In the oily cosmetic of the present invention, in addition to the above-mentioned essential components, solid oily raw materials such as paraffin and ceresin, and paste-like oily raw materials such as petrolatum and heavy liquid isoparaffin, as well as the essential oils, do not impair the object of the present invention. Liquid oily raw materials such as paraffin, squalane, tri (caprylic / capric acid) glycerin, various vitamins, antioxidants, preservatives, fragrances, talc, mica, titanium oxide, iron oxide, tar pigments, silk powder, nylon powder, etc. Can be appropriately compounded.

[0012]

EXAMPLES Hereinafter, the present invention will be specifically described with reference to Examples, but evaluation items and methods will be described in detail prior to this.

<Test Method for Evaluating Use Quality> Female Paneler 2
The samples of Example and Comparative Example were separately assigned to each of the half faces of the 0 face, and each person was judged on the following items, and the number of persons who answered "O" was regarded as the evaluation result. Yes Slight No Moist feeling at the time of application ○ △ × Feeling of burden on skin at the time of application × △ ○ Moist feeling after 3 hours ○ △ × Feeling of burden on skin after 3 hours × △ ○

<Test Method 1 for Evaluation of Stability> Two sets of trial-produced cosmetics were prepared in a glass container, and one of them was placed at 80 ° C.
After 20 hours passed in a constant temperature room, the test was applied to the back of the hand by 10 female panelists, and the change in color and odor was determined by comparison with another test sample not subjected to the test. The number of people who answered "O" was used as the evaluation result.

<Test Method 2 for Stability Evaluation> After three years, the cosmetics produced as trial products were stored in a room without air-conditioning. The name was applied to the back of the hand and compared. The number of people who answered "O" was used as the evaluation result.

The refined sunflower oil, refined jojoba oil, refined olive oil, refined olive squalane, refined castor oil, and refined milk described in the following examples are components used in the present invention and are defined by the AOM test method. The time required for the peroxide value to reach 100 when clean air was continuously injected at 2.3 ml / s (± 10%) into an oil solution kept at 98 ° C. in a closed glass container was 60 hours. That is all. In addition, sunflower oil, olive oil, and castor oil used had low refining degree and were not compatible with the present invention in which the above times were 33, 42, and 55 hours, respectively.

Examples 1-5 and Comparative Examples 1-2 Examples 1-5 and Comparative Examples 1-2 shown in Table 1 are lipsticks,
After melt-mixing by a usual method, the mixture was cooled and solidified, and the above-mentioned evaluation test was performed. The results shown in Table 2 were obtained. The numbers in Table 1 are% by weight.

[0018]

[Table 1]

[0019]

[Table 2]

Examples 6 and 7 Comparative Examples 3 and 4 Examples 6 and 7 and Comparative Examples 3 and 4 shown in Table 3 are foundations. An evaluation test was performed, and the results in Table 4 were obtained. Table 3
The numbers in the figures are% by weight.

[0021]

[Table 3]

[0022]

[Table 4]

Examples 8 and 9 Comparative Examples 5 and 6 Examples 8 and 9 and Comparative Examples 5 and 6 shown in Table 5 are eye shadows. The above evaluation test was performed, and the results shown in Table 6 were obtained. The numbers in Table 5 are% by weight.

[0024]

[Table 5]

[0025]

[Table 6]

Examples 10 and 11 Comparative Examples 7 and 8 Examples 10 and 11 and Comparative Examples 7 and 8 shown in Table 7 are oily lotion gels, which were mixed by a usual method, filled in a glass container, and then subjected to the evaluation test. And the results shown in Table 8 were obtained. The numbers in Table 7 are% by weight.

[0027]

[Table 7]

[0028]

[Table 8]

[0029]

As described above, the present invention is to provide an oily cosmetic which is excellent in persistence of the moisturizing effect, has very little heat pressure and occlusion on the skin, and has excellent heat stability and aging stability. Is clear.

Claims (1)

[Claims] 1. A method for continuously injecting clean air at 2.3 ml / s (± 10%) into an oil solution kept at 98 ° C. in a closed glass container until the peroxide value reaches 100. An oil-based cosmetic comprising at least one or more plant-extracted oils having a time of 60 hours or more and milk fat.