JPH0720850B2 - Stick-shaped cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved stick cosmetic. More specifically, the present invention relates to a stick-shaped lipstick cosmetic having good usability such as ease of drawing and having a deep texture with no coating color gloss.

Stick-shaped cosmetics are cosmetics that contain oil and / or waxes and powders and are molded into a stick shape. They are used as eye shadows to make your eyes look beautiful, and to express your lips attractively. It is used as a lipstick, etc.

Conventionally, the mainstream of these stick-shaped cosmetics has a glossy coating color, but in recent years, in the high fashion-oriented layer, the color itself feels straight with a matte texture that seems to have absorbed all the light. Nowadays, lipsticks and eye shadows are being demanded.

However, if the amount of powder is simply increased in stick-shaped cosmetics, the coating color will not be glossy, but the drawback is that it will be difficult to draw because it spreads heavily and is not familiar to the skin. No stick-shaped cosmetics have been obtained that are glossy and easy to draw on the skin.

In view of these circumstances, the present inventors have conducted extensive studies to solve the above-mentioned drawbacks, and as a result, a stick-shaped cosmetic composition containing a specific amount of a specific silicone oil in addition to an oil or wax and a powder is Based on this finding, we found that the applied color has no gloss and has a unique texture and deep color tone, it is easy to draw on the skin, and it also has other properties as a stick lipstick cosmetic. The present invention has been completed.

That is, the present invention is a powder 20 to 50 wt% (hereinafter, simply%
Abbreviated) and 20 to 50% by weight of chain-like dimethylpolysiloxane having a viscosity of 5 to 8 cs.

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

The powder used in the present invention is a natural or synthetic powder, and examples thereof include extender pigments such as talc, mica, kaolin, titanium dioxide and zinc white, organic pigments such as resole rubin BCA and resole rubin B, iron oxide, navy blue, ultramarine blue and the like. One kind or two or more kinds of the inorganic pigments can be mentioned.

In order to obtain a beautiful color tone required as a makeup cosmetic, an organic pigment or an inorganic pigment is generally used in an appropriate combination.

Among extender pigments, kaolin is most preferable in consideration of usability.

The powder content is selected in the range of 20 to 50%, preferably 30 to 40%. When it is less than 20%, the matte and deep texture is not sufficient, and when it exceeds 50%, usability becomes heavy, which is not preferable.

The silicone oil used in the present invention is chain dimethylpolysiloxane.

The viscosity of silicone oil (measurement conditions: BL type viscometer, low viscosity adapter, 30 rpm, 25 ° C) is 5 to 8 cs due to its deep texture and ease of use.

The compounding amount is 20 to 50%. If it is less than 20%, a matte and deep texture cannot be sufficiently obtained, and if it exceeds 50%, the compatibility with other components deteriorates and the hardness decreases with time, which is not preferable.

The total amount of the silicone oil and the powder is preferably 95% or less in view of the formulation composition as a stick cosmetic. If it exceeds 95%, the amount of oils or waxes described below will be insufficient and it will be difficult to form sticks.

The stick-shaped cosmetic of the present invention requires oils and / or waxes in addition to silicone oil and powder.

Any oil may be used as long as it has high skin safety, and well-known oils conventionally used in the field of cosmetics can be used.

For example, liquid paraffin, squalane, isopropyl myristate, olive oil, castor oil and the like. One kind or two or more kinds are arbitrarily selected from these. The compounding amount is generally 5 to 40%.

Waxes are also commonly used in cosmetics and include, for example, ceresin wax, lanolin, solid paraffin, microcrystalline wax, vaseline,
Examples include beeswax, carnauba wax, candelilla wax and the like. One kind or two or more kinds are arbitrarily selected from these. The compounding amount is generally 1 to 30%.

In addition to the above-mentioned essential components, a moisturizer, a fragrance, a drug, an antioxidant, a surfactant and the like are added to the stick-shaped cosmetic of the present invention as required. Of course, these must be used under the qualitative and quantitative conditions that do not impair the self of the present invention.

The sticky cosmetic of the present invention has a deep texture with no gloss in the applied color, is easy to draw on the skin and is easy to use and has other usability, such as ease of dropping, water resistance, oil resistance and hardness stability. It also has other properties required for cosmetics.

Next, the present invention will be described in more detail with reference to examples. The present invention is not limited to this. The blending amount is% by weight.

(Examples 1, 2, 3 and Comparative Examples 1, 2, 3) Lipstick (Manufacturing method) was melted by heating at 90 ° C. After adding and stirring and mixing, the mixture was poured into a 10φ mold at 80 ° C for molding.

(Effect) The quality evaluation of Examples 1, 2, and 3 and Comparative Examples 1, 2, and 3 was performed, and the results are shown in (Table 1).

[Measurement conditions] Model: Gross Senser VG-2R (Nippon Denshoku Industries Co., Ltd.) Reflection angle; 60 ° Measurement temperature: Room temperature Sample: Nylon cloth with a certain amount applied uniformly.

(The smaller the value, the less the gloss.) As is clear from the results in (Table-1), the stick cosmetic composition of the present invention is excellent in the effect of providing a deep and matte texture with no coating color, and It was confirmed that it has a sufficient function as a stick cosmetic.

[Example 4, Comparative Example 4] Lipstick [Manufacturing Method] were heated to 90 ° C. and dissolved. After adding, stirring and mixing, the mixture was poured into a 10φ mold at 80 ° C. for molding.

(Effect) The quality was evaluated at the same time as Examples 1, 2 and 3, and the results are shown in (Table 2).

As is clear from the results of (Table 2), the stick-shaped cosmetic composition according to the present invention has an excellent effect of producing a deep and matte texture in the applied color and has a sufficient function as a stick-shaped cosmetic composition. It was confirmed.

Comparative Example 5 Comparative Example 5 was obtained in the same manner as in Example 2 except that dimethylpolysiloxane 6cs of Example 2 was changed to dimethylpolysiloxane 0.65cs.

Comparative Example 6 Comparative Example 6 was obtained in the same manner as in Example 2 except that dimethylpolysiloxane 2cs was used instead of dimethylpolysiloxane 6cs of Example 2.

Usability, stability, and safety were compared and evaluated between Comparative Examples 5 and 6 and Example 2 described above.

If the viscosity of dimethylpolysiloxane is too low, it becomes volatile, and when it is used as a stick-shaped cosmetic, the content of the dimethylpolysiloxane becomes thin over time, and the sticky cosmetic easily comes off from the container. In addition, the volatilized dimethylpolysiloxane may cause irritation to the eyes, causing a so-called "windburn" that causes the eyes to flicker and tears. In Comparative Examples 5 and 6, the usability immediately after production was the same as that of the present invention, but it was found that there are problems in the above points.

[Comparative Examples 7 to 9] The following compositions were blended to obtain Comparative Examples 7 to 9 in the same manner as in Comparative Examples 5 and 6. Similar to Comparative Examples 5 and 6, these were evaluated for ease of drawing, color depth, gloss, gloss, and stability. The results are shown in the table below.

As is clear from the above table, the effect of the present invention does not depend only on the viscosity of dimethylpolysiloxane, but also the blending amount of powder, the blending amount of dimethylpolysiloxane, the ease of drawing, the depth of color, and the gloss, It can be seen that it is possible to combine effects such as stability. Regarding the stability (ease of drawing), in the evaluation of Comparative Example 8, the compatibility with other components deteriorated, the hardness decreased with time, and as a result, it became difficult to draw. In Comparative Example 9, the hardness decreased. In addition, in order to evaluate the same (slender content), Comparative Example 8,
An evaluation (Δ) of 9 indicates that sweating (oil separates and emerges on the surface) was observed although the contents and leanness were not observed.

[Comparative Examples 10 to 13] The following compositions were blended to obtain Comparative Examples 10 to 13 in the same manner as in Comparative Examples 5 and 6. Similar to Comparative Examples 5 and 6, these were evaluated for ease of drawing, color depth, gloss, gloss, and stability. The results are shown in the table below.

As is clear from the above table, in the dimethylpolysiloxane having a viscosity of 0.65 cs and a viscosity of 2.0 cs, the effect of the present invention is obtained even if other requirements such as the amount of dimethylpolysiloxane and the amount of powder are within the scope of the present invention. It turns out that you cannot have all of them together. On the other hand, Examples 1 to 1
As is clear from 4, when the dimethylpolysiloxane having a viscosity of 5 to 8 cs is blended with other requirements within the scope of the invention of the present application, it is glossy, deep in color, and easy to draw on the skin, and sticks to the skin. The stick-shaped lipstick cosmetic of the present invention, which also has the properties of a lipstick cosmetic, can be obtained.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-51-151339 (JP, A) "Supplementary Material Standards Supplement for Cosmetics, Supplement to the Standards for Raw Materials for Cosmetics (II) Annotations" 1st Edition (Sho 48-9-) 14) Yakuji Nipposha P. 536-542

Claims (1)

[Claims] 1. A stick-shaped lipstick cosmetic, comprising 20 to 50% by weight of powder and 20 to 50% by weight of chain dimethylpolysiloxane having a viscosity of 5 to 8 cs.