JPH0624938A - Cosmetic - Google Patents

Abstract

PURPOSE:To provide a make-up cosmetic capable of preventing the generation of phenomena such as whitish photographing and whitish appearing, when photographed with a stroboscopic flash or when seen under light such as sun light having a high color temperature. CONSTITUTION:A titanium dioxide pigment comprising rutile type titanium dioxide, anatase type titanium dioxide, amorphous type titanium dioxide and/or their mixture and having an average particle diameter of 0.28-0.95mum, the surface of the pigment being treated with an inorganic substance such as alumina, silica or titania and/or an organic substance such as a silicone, fats and oils or a resin or not treated, is applied to the composition of a foundation cosmetic instead of a part or all of a conventional titanium dioxide pigment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to make-up cosmetics, especially foundations, and more particularly to make-up cosmetics in which the face to which makeup is applied does not appear unnaturally whitish during photography with a strobe flash.
Furthermore, the cosmetics according to the present invention may have a phenomenon in which a face which is made up under an incandescent lamp, a fluorescent lamp or a normal room looks whitish when viewed with a light source having a high color temperature such as sunlight in addition to a strobe flash. Can be prevented.

[0002]

2. Description of the Related Art Make-up cosmetics, in particular, foundations such as pressed foundations, emulsion foundations and oil foundations are often obtained with a titanium oxide pigment.

However, since this titanium oxide pigment was originally put on the market as a pigment having a high hiding power, it was developed for the purpose of its maximum hiding power and whiteness or light scattering power. As a result, most of the commercially available products have an average particle size of about 0.2 μm, which is designed based on visible light, and some of them are disclosed in JP-B-47-42.
As disclosed in Japanese Patent No. 502, a fine titanium oxide pigment having an average particle diameter of 0.03 to 0.04 μm, which exhibits high absorption in an ultraviolet region and is effective as a sunscreen cosmetic, is also used. Is larger than these, about 0.28μ
Titanium oxide pigments having an average particle diameter of m or more have not been generally used because of their small hiding power, and have not been used at all in cosmetics.

[0004]

However, by using the conventional titanium oxide pigments as described above to prepare foundations and using them as cosmetics, under ordinary artificial light sources or in the room, surrounding walls and furniture, etc. Xenon discharge for strobe flash is applied to the face so as to properly match the skin color under the general color condition where is a warm color system A place illuminated by light with a large amount of short-wavelength components or peak components with relatively short wavelengths, such as a tube or other equivalent light source or outdoor sunlight, or under high lighting conditions. In the place, due to a kind of metamerism with the skin color, it becomes more bluish than the skin color, and as a result, only the foundation becomes whitish than the skin. Rui will be white float phenomenon occurs that appear pale.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been conducted as a result of earnest researches focusing on titanium oxide pigments that occupy a large weight with respect to various practical properties of foundations such as hiding power. The average particle size is 0.28 μm to 0.95, which is larger than the commercially available pigment titanium oxide.
By applying the titanium oxide pigment of μm to the foundation, cosmetics that give the user a high cosmetic effect without the whiteness caused by metamerism as described above and a sense of security that it does not look unnatural or does not appear unnatural. To provide.

That is, rutile type, anatase type, amorphous type and / or a mixture thereof, and alumina. silica. Inorganic substances such as titania and / or silicone. Oils and fats. By applying a titanium oxide pigment treated with an organic substance such as a resin or untreated to a formulation of foundations instead of a part or all of the conventional titanium oxide pigment, the above-mentioned effects are obtained.

In this case, the titanium oxide pigments having an average particle size of less than 0.28 μm are not so different from the conventional ones, and those having a mean particle size of more than 0.95 μm are significantly inferior in hiding power, touch and adhesion. It was And, if the compounding amount with respect to the cosmetic is 0.5% by weight or less, that effect is not obtained, and
When the content is more than 10% by weight, the foundation with good spreadability could not be obtained.

Further, since the whiteness of the conventional titanium oxide pigments is regarded as important, the color tone due to yellow or brown or red is not preferred, but the titanium oxide pigments of the present invention are for cosmetics. It is preferable to the pale one because it exists.

Therefore, warming due to large particles,
Coloring due to the inclusion of iron or the like, or the fact that the shape of the particles is not close to a sphere, properties that were conventionally considered unfavorable for pigments may be preferred in order to emphasize the features of the present invention. For such a purpose, the titanium oxide pigment may have the above-mentioned properties.

The advantage or superiority obtained by using the titanium oxide pigment of the present invention sufficiently compensates for the disadvantage of lowering the hiding power as compared with the conventional titanium oxide pigment.

[0011]

EXAMPLES Examples will be shown below, but the present invention is not limited thereto. Titanium oxide A: average particle size 0.42 μm, treated with alumina. Titanium oxide B: average particle size 0.83 μm, treated with silica and alumina. Titanium oxide C: a rod-shaped primary particle shape having an average particle size of 0.75 μm and untreated.

Example Press 2 way foundation After thoroughly mixing and developing b, add b and mix thoroughly,
Disperse and press mold to cake.

Example Emulsion type foundation After heating c to 70 ° C and fully developing the color,
Add D heated to 0 ° C to emulsify and cool to room temperature.

Example Oily foundation To the solution which has been heated and dissolved at 90 ° C, is added a mixture which has been mixed and crushed in advance, and after sufficiently developing the color, it is poured into a container, cooled to room temperature and solidified.

[Comparative Experiment] The foundation according to the present invention was compared with the foundation using a conventional commercially available titanium oxide pigment. First, the foundation was applied to the face under artificial light (fluorescent lamp), and after 30 minutes, the color tone was settled, and then observation or photographing was performed under each light source. The results are shown in Table 1.

[0016]

[0017]

The foundation according to the present invention has little metamerism with the skin color depending on the lighting conditions, and is clearly superior to the foundation according to the prior art.

Claims (2)

[Claims] 1. A cosmetic comprising a titanium oxide pigment having an average particle diameter of 0.28 μm to 0.95 μm as a special barrel. 2. The cosmetic according to claim 1, containing 0.5% by weight or more and 60% or less of the titanium oxide pigment.