JP2758830B2 - Powder foundation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a powder foundation.
It relates ® down, more particularly, excellent adhesion, with time
Powder float-collapse is small, pores, rough texture, powder fan was superior to the effect of hard to see the structural shortcomings of the skin such as fine wrinkles
Regarding the date .

[0002]

A prior art and the invention is to provide a conventional, Pa
In the powder foundation , powdered pigments such as iron oxide, titanium oxide, zinc oxide and other coloring pigments, extender pigments such as mica, talc and sericite, and composite pigments thereof are blended. Depending on the ratio, cosmetics having a good feel and a cosmetic effect have been obtained.

However, plate-like extender pigments such as mica, talc, sericite, etc., have a sliding direction only in a horizontal direction with respect to a plane due to the shape thereof, and therefore have an appropriate sliding on a smooth plane without unevenness. Then, the spread of the powder is uniform, but on the surface having the unevenness, the powder falls into the concave portion, the sliding stops at the convex portion, and the powder accumulates at the root portion. Therefore, makeup cosmetics containing these plate-like extender pigments can form a beautiful cosmetic coating film in a portion with little skin unevenness, but for a portion with fine wrinkles, rough texture, and large pores, Powder accumulates in textures and pores, or is caught by wrinkles, and a uniform and beautifully visible decorative coating film cannot be formed.

[0004] Further, when spherical particles such as nylon powder and spherical silica are used in combination with the above-mentioned extender pigment, the sliding properties due to the rolling of the spherical particles are imparted, so that the non-uniformity of the cosmetic in the uneven portions is reduced. , The decorative coating looks more uniform and beautiful. However, it is hard to say that the structural irregularities are still hard to see sufficiently, and furthermore, the adhesion is impaired, so that the makeup is likely to collapse over time.

[0005] That is, a pow containing a conventional extender pigment.
It is very difficult to make skin structural defects such as pores, coarse texture, fine wrinkles and the like sufficiently difficult to see in the Dar Foundation, and there is a demand for the development of cosmetics that further satisfy these.

[0006]

SUMMARY OF THE INVENTION In view of the above circumstances, the present inventors can form a more uniform cosmetic coating film on uneven portions of the skin, and make it difficult to fully see structural defects such as rough texture and fine wrinkles on the skin. As well as excellent adhesion, floating and breaking of powder over time
As a result of intensive studies to determine if this can be reduced , the powder foundation that has sufficient slipperiness and spreadability due to rolling even on uneven parts of the skin and has sufficient adhesion is effectively incorporated into the powder foundation . if,
That which satisfies these is obtained, paths that allowed effectively blended to a higher affinity oil against further skin
It has been found that the effect of making the structural defects of the skin less visible with a powder foundation is increased, and the present invention has been completed.

More specifically, claim 1 of the present invention is to contain 0.5 to 30% by weight of a silicone powder containing silicone oil and 1 to 10% by weight of a polyhydric alcohol. (Sum of blending amount of silicone) / (blending amount of silicone powder granule) <2.5 and (polyhydric alcohol)
( Powder composition ) / (total amount of oil agent)> 0.2 .

Hereinafter, the configuration of the present invention will be described in detail.

The silicone powder containing silicone oil is a characteristic component of the present invention. Its shape is spherical 1
It is an aggregate of 100 μm primary particles, and the aggregate has elasticity. When applied on the skin, the aggregates are pressed against the skin by the pressure of the application and simultaneously undergo a rolling-like collapse. Therefore, when the application pressure is applied from obliquely above the application surface during application, the powder near the interface with the application surface adheres to the application surface, and the upper powder moves quickly to the position immediately beside it. I will do it. By repeating this cycle, appropriate adhesion and uniform dispersion of the powder are compatible. In addition, since the silicone powder has elasticity, even when it is applied to the concave and convex portions, it expands and contracts on each surface of the concave and convex portions, so that the above-mentioned property of simultaneous pressing and collapsing is lost. It is not something to be done. For this reason, the silicone particles act to give the cosmetics of the present invention a rapid and uniform spread on the skin and an appropriate adhesion at the same time.

[0010] Such a silicone powder is a cured organopolysiloxane containing silicone oil. The silicone oil constituting the silicone powder is not particularly limited, but it is particularly preferable that the silicone oil is liquid at ordinary temperature and has a viscosity at 25 ° C. of 10 to 1000 centistokes. The organopolysiloxane cured product is not particularly limited as long as it forms an aggregate with spherical primary particles, but is preferably a dimethyl silicone crosslinked elastic material formed into spherical fine particles. For example, Toray Dow Corning Silicone Co., Ltd.'s Trefil E-505C is suitable.

The amount of the silicone powder in the powder foundation of the present invention is preferably 0.5 to 30% by weight, more preferably 3 to 15% by weight. 0.5
If the amount is less than 10% by weight, the compounding ratio with respect to other powders becomes small, so that the effect of the compounding of the silicone powder and granular material cannot be sufficiently imparted to the powder foundation. The formability of cosmetics is impaired.

The compounding amount of the silicone powder in the powder foundation of the present invention is also defined by the following ratio of the sum of the compounding amounts of titanium oxide and zinc oxide and the compounding amount of the silicone powder. That is, the ratio is (the sum of the blended amounts of titanium oxide and zinc oxide) / (the blended amount of the silicone powder) <2.5. If this ratio is higher than that, the friction resistance with the skin is increased due to titanium oxide or zinc oxide, and the slipperiness is deteriorated.

The polyhydric alcohol of the present invention is a compound having two or more hydroxyl groups in the molecule and has a higher polarity than other cosmetic oils, so that it has an affinity for the skin via moisture on the skin. Has very high properties. Therefore, it becomes a component that further promotes the adhesion property of the silicone powder of the present invention to the skin, and the cosmetic of the present invention has rough texture, fine wrinkles, and exfoliation of keratin within a range that does not impair the slipperiness on the skin. It functions to improve the adhesion to the affected parts and at the same time to give a suitable skin familiarity. The polyhydric alcohol is not particularly limited as long as it is usually used as a cosmetic oil agent.
For example, propylene glycol,
Dipropylene glycol, 1,3-butylene glycol, glycerin and the like.

The amount of the polyhydric alcohol to be added to the powder foundation of the present invention is 1 to 10 % by weight based on the total powder foundation . If the amount is less than 1 % by weight, sufficient adhesion is not provided. If the amount exceeds 10 % by weight, the effect appears as frictional resistance, and the spread on the skin tends to be increased.
You .

Further, by specifying the blending amount of the polyhydric alcohol at a fixed ratio in relation to the whole oil agent, the powder foundation of the present invention can have more preferable effects. That is, the ratio is
(Blending amount of polyhydric alcohol) / (Sum of blending amount of oil)
> 0.2. When the ratio is 0.2 or less, the cosmetic is not sufficiently compatible with the skin, and the adhesion between the cosmetic coating film and the skin is slightly inferior. On the other hand, 0.2
Over, less change over time such as makeup collapse,
A better decorative coating is formed on the skin. Where oil
Is the total amount of oily components and polyhydric alcohol
It is the sum of the quantities.

The powder foundation of the present invention may contain powder components used for ordinary cosmetics. For example, iron oxide, titanium oxide, zirconium oxide,
Zinc oxide, alumina, magnesium oxide, barium sulfate, mica, talc, sericite, kaolin, ultramarine, navy blue, calcium carbonate, mica titanium, tar pigment, natural pigment, acrylic resin powder, polymethyl methacrylate powder, nylon powder Xan powder, silicic anhydride, coated mica in which mica surface is coated with titanium oxide or the like, or coated powder such as coated nylon powder or coated polymethyl methacrylate that has been coated in the same manner, and the like.

The powder foundation of the present invention may contain oily components used in ordinary cosmetics. For example, vaseline, hydrocarbons such as liquid paraffin; stearic acid, fatty acids such as oleic acid; and silicone oil and its derivatives, and, esters of isopropyl myristate; higher alcohols such as cetanol lanolin derivatives.

The powder foundation of the present invention may further contain, if necessary, a surfactant, a preservative, an antioxidant,
A fragrance, a humectant, a bactericide, an astringent, an ultraviolet absorber and the like can be appropriately blended within a range that achieves the object of the present invention.

[0019]

The present invention will be described in more detail with reference to the following examples. Prior to this, the evaluation method used in the examples will be described. Note that the present invention is not limited to these.

(Comparison of sensory characteristics used, degree of hiding of rough texture and fine wrinkles, etc., and makeup durability) A practical test was conducted by 30 female panelists, and the feeling of use was "softness per skin", "moist feeling", and practical use. "Adhesiveness" as a characteristic,
The number of female panelists who answered "good" for each of the evaluation items of "inconspicuousness of rough texture and fine wrinkles" and "floating / collapse of powder over time" was examined, and the evaluation results were evaluated as ◎, ○ according to the criteria in Table 1. , △, and ×.

[0021]

[Table 1] ┌──────────────┬────┐ │ evaluation result │ display symbol │ ├──────────────┼── │ │ 17 or more respondents are good │ ◎ │ │ 12 to 16 respondents are good │ ○ │ │ 6 to 11 respondents are good │ △ │ │ 5 or less respondents │ × │ └ ──────────────┴────┘

[0022] A powder foundation of Comparative Example was prepared according to the recipe of the (specific Comparative Examples 1-6 [Powder Foundation]) Table 2.

[0023]

[Table 2]

The unit of the number indicating the composition of each component is heavy.
% (The same applies hereinafter), and the adjusting method is as follows. That is, after the powder components were mixed with a Henschel mixer, the liquid components that had been mixed in advance were added, followed by stirring and mixing. Subsequently, after pulverization was performed using an atomizer, the mixture was punched using a mold to obtain a powder foundation.

This was used as a sample for evaluation. Table 3 shows the results.

[0026]

[Table 3]

[0027] (ratio Comparative Examples 7-11 [Powder Foundation]) was prepared like in the powder foundation of Comparative Examples according to the formulations of Table 4.

[0028]

[Table 4] These were used as samples and evaluated. Table 5 shows the results.

[0029]

[Table 5]

(Examples 1 to 3 , Comparative Examples 12 to 13 [Powder Foundation]) The powder foundations of the respective Examples and Comparative Examples were prepared in the same manner in accordance with the formulation of Table 6.

[0031]

[Table 6] These were used as samples and evaluated. Table 7 shows the results.

[0032]

[Table 7]

As can be seen from Tables 3, 5 and 7, Example 1
To 3 are remote Yu by the comparative example in all of the evaluation items.

[ 0034 ]

As described above, the invention of the present application has improved adhesion.
Good, less powder floating-collapse with time, pores, it is clear that providing a rough texture, structural powder foundation was excellent in the effect of less visible the disadvantages of skin such as fine wrinkles.

Claims (1)

(57) [Claims] 1. A silicone powder containing silicone oil in an amount of 0.5 to 30% by weight , and a polyhydric alcohol in an amount of 1 to 1 %.
Containing 0 wt%, (the amount of the silicone powder granules) (amount of the sum of the titanium oxide zinc oxide) / <2.5 der
And (polyhydric alcohol content) / (oil agent content)
Of powder powder , characterized by being > 0.2
Foundation .