JP2842617B2 - Foundation - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a foundation having a high concealing property and an excellent adhesiveness and a long lasting property.

(Prior art) Conventionally, so-called skin troubles such as aza, spots, freckles and the like in make-up cosmetics are concealed by using a foundation mainly containing titanium dioxide, a white pigment, to cover skin troubles. It was useful for sunscreens.

(Problems to be Solved by the Invention) However, there is a limit in hiding with titanium dioxide, which is effective for mild stains and freckles, but is less effective for severe stains and azaleas. May be noticeable. In addition, the finish is thickened for concealment, and a natural finish cannot be obtained, which often causes a problem.

For example, aza is pigmented trouble such as severe melasma, so far with concealment by titanium dioxide, the light transmitted to the skin can be prevented to some extent by light scattering in the foundation layer,
Some of the transmitted light reached the skin, and the reflection from the pigment part was inevitable, and the presence or absence of a trouble could be visually recognized.

(Means for Solving the Problems) In view of the present situation, the present inventors have made intensive studies to solve the above-mentioned problems, and as a result, using a specific aluminum powder, It has been found that the use of a combination of these can provide a foundation having an excellent concealing effect due to the effect of shielding visible light due to light reflection, and having improved adhesion and durability, thereby completing the present invention.

That is, the present invention provides a 5- to 70% by weight aluminum powder having an average particle diameter of 1 to 70 μm, a silicone-based film forming agent 5 to be selected from a three-dimensional network silicone, a silicone resin, and a polymer silicone having a viscosity of 1,000,000 cs or more. The present invention relates to a foundation characterized by containing 50% by weight.

 Hereinafter, the present invention will be described in detail.

First, the aluminum powder used in the present invention has an average particle diameter of 1 to 70 μm, and preferably has a mean particle diameter of 5 to 50 μm.

When an aluminum powder having an average particle diameter of less than 1 μm is used, although the adhesion is improved, the aluminum powder itself becomes dull, and it becomes difficult to make a cosmetic finish with a functional surface. Conversely, if the thickness exceeds 70 μm, the surface will feel grainy and the finished surface will be glaring.

Next, the content of the aluminum powder is 5 to 70% by weight based on the whole foundation, preferably 10 to 40% by weight.
A range of weight percent is selected.

When the content of the aluminum powder is less than 5% by weight, the concealing effect against pigmentary trouble, which is the object of the present invention, is reduced, and aza, spots, and the like are visually observed. Conversely, 70
If the content is more than 10% by weight, the hiding effect is excellent, but the finish may be glaring or the feel may be rough.

Similarly, the silicone-based film-forming agent used in the present invention is used for the purpose of improving the adhesion and durability of the foundation.

The silicone-based film-forming agent may be any component that forms a film after water or other volatile components are volatilized at room temperature, such as three-dimensional network silicone, silicone resin,
Polymer silicones of 1,000,000 cs or more can be used, and one or more of these can be used in combination.

The silicone-based film-forming agent is preferably used in the form of a mixture with a volatile oil agent. Examples of the volatile oil agent include low-boiling silicone oil, low-boiling cyclic silicone oil, and low-boiling isoparaffin. From the balance in use, the ratio of the silicone-based film-forming agent to the volatile oil agent is preferably in the range of 1: 4 to 4: 1.

Next, the content of the silicone-based film-forming agent is 5 to 50% by weight based on the whole foundation, preferably
A range of 15-35% by weight is selected.

If the content of the silicone-based film-forming agent is less than 5% by weight, the film strength is weak and the film cannot withstand actual use such as water resistance, oil resistance, and abrasion resistance. Not only does it collapse, but it becomes too viscous and the usability deteriorates.

In the foundation of the present invention, in addition to the above-mentioned essential components, organic, inorganic, and inorganic substances commonly used in foundations
Various powders and pigments such as pearlescent agents, solid fats and oils, semi-solid fats and oils, liquid oils, other surfactants, pigment dispersants, plasticizers, fragrances, preservatives, and the like are appropriately blended according to the purpose.

(Examples) Next, the foundation of the present invention will be described with reference to Examples, but the blending amount is part by weight. The evaluation criteria and evaluation methods used in the examples are as follows.

<Evaluation criteria> <Evaluation Method> Ten severe aza and stain holders were used as panelists, the total of each evaluation value was calculated, and the average was calculated.

Example 1 Foundation (A) Three-dimensional reticulated silicone 30 (B) Low boiling dimethylpolysiloxane 1cs 38 (C) Glycerin isostearate 5 Aluminum powder 15 (D) Yellow iron oxide 5 Bengala 2 Titanium dioxide 5 (Method) (A) Then, a part of (B) is mixed and diluted, and (D) is mixed with the remaining part of (B) to form a paste with three rolls.
The (B) dilution of (A) and (C) were added, mixed, dispersed and homogenized.

Example 2 Partial foundation (A) Silicone resin 25 High molecular weight dimethylpolysiloxane 1 million cs 5 (B) Low boiling isoparaffin 35 (C) Aluminum powder 20 (D) Yellow iron oxide 5 Bengala 5 Titanium dioxide 5 (Method) ( After mixing a part of (B) into D) and pasting it with three rolls, the remaining parts of (A) and (B) and (C) are charged,
The mixture was dispersed and homogenized.

Comparative Example 1 Foundation (A) Microcrystalline wax 5 Polyethylene powder 5 (B) Cetyl 2-ethylhexanoate 20 Liquid paraffin 7 Squalane 15 (C) Nylon powder 20 Titanium dioxide 15 Bengala 3 Iron oxide yellow 5 Talc 5 (Method) ( C) and a part of (B) are mixed and dispersed by a ball mill to form a paste. The remainder of (A) and (B) were heated and stirred at 80-90 ° C. to make them uniform. Add the previous paste to this,
The mixture was stirred and homogenized.

Comparative Example 2 Partial Foundation (A) Microcrystalline Wax 15 Carnauba Wax 2 Candelilla Wax 5 (B) Squalane 15 (C) Mica 5 Yellow Iron Oxide 20 Bengala 10 Titanium Dioxide 20 Talc 3 (Method) (C) A part of B) is mixed and dispersed with a three-roll mill to form a paste. The remainder of (A) and (B) were heated and stirred at 80-90 ° C. to make them uniform. Add the previous paste to this,
The mixture was stirred and homogenized.

 Table 1 shows the results of the evaluation.

As is clear from the results in Table 1, it can be seen that the foundation of the product of the present invention is superior in all items as compared with the foundation of the comparative product.

(Effect of the Invention) According to the present invention, it is possible to provide a foundation having a high hiding power, and excellent in adhesion and durability.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Junichi Shibatani 648, Yayoi-cho, Shizuoka-shi, Shizuoka Pref. Inside Polar Chemical Industry Co., Ltd. (56) References JP-A-63-27419 (JP, A) JP-A-63-63 27421 (JP, A) JP-A-1-96111 (JP, A) JP-B-38-3943 (JP, B1) (58) Fields investigated (Int. Cl. ⁶ , DB name) A61K 7/00 A61K 7 / 035

Claims (1)

(57) [Claims] 1. An aluminum powder having an average particle diameter of 1 to 70 μm, 5 to 70% by weight, and a silicone film-forming agent 5 to 50 selected from a three-dimensional network silicone, a silicone resin, and a high molecular silicone having a viscosity of 1,000,000 cs or more. A foundation characterized by containing by weight.