JP4231469B2 - Fake eyebrow cosmetic - Google Patents

Description

  The present invention relates to a pseudo eyebrow forming cosmetic that imparts a pseudo eyebrow shape to the eyebrows of a face.

  As one of facial makeup, products called eyebrow ink, eyebrow, eyebrow mascara and the like have been put into practical use as cosmetics for adjusting the eyebrows into a desired shape. This is commercialized in the form of powder, solid powder, liquid, paste, etc., mainly containing black or brown pigments, using a predetermined tip, brush, etc. Cosmetics to draw.

  In other words, the user intends to create a beautiful finish by drawing the eyebrow shape with the desired length, thickness, and shade on the background of the eyebrow part to supplement the original eyebrows or form an alternative eyebrow shape. It is.

  However, these conventional products essentially have a color material applied on the skin, so they have poor sustainability and can be easily removed by finger friction, sweat, face washing, etc. there were. In particular, pencil-type and press-molded powder-type products that have pigments as the main component and are stored in pallets have a natural finish, but they tend to remove makeup due to moisture such as friction and sweat. There are many cases where it is difficult to maintain the formed eyebrows, such as during easy seasons, sports, and swimming.

  In order to solve this problem, cosmetics using fluorine-based polymers that are hard to break down against sweat and sebum have been proposed, but the above-mentioned fixability during sports and swimming is sufficient. There was also a problem that the finish looked unnatural with a flat plate.

  In addition, there is a tattoo method as a semi-permanent makeup means, but the treatment is painful and time consuming, and it cannot be performed with daily makeup.

On the other hand, there are known agents that make the skin extensively or partially tanned without the need for exposure to sunlight or ultraviolet light. For example, dihydroxyacetone (DHA) is applied to a product called a self-coloring agent or self-tanning agent by utilizing the property that the coated part is colored yellow or brown by reaction with the amino group of skin or the amino group of keratin. (Non-Patent Document 1).
Takeo Mitsui, “New Cosmetics”, Nanzan-do, 2nd edition, January 18, 2001, p.506

  The present invention provides a pseudo-eyebrow cosmetic that solves the short-lasting drawbacks of conventional eyebrows and the like, and can maintain the formed eyebrow shape for a certain period of time.

  The present inventors have found that the above-described problems can be solved by applying a cosmetic whose application part is dyed by reaction with a skin component to a desired part and shape.

  The pseudo eyebrow forming cosmetic of the present invention can form a pseudo eyebrow that is applied to the skin and then colored by reaction with skin components, and is difficult to be removed by friction, sweat, washing or the like. Since the applied part is dyed within a few hours after application, for example, when applied before going to bed, a desired eyebrow shape is formed when getting up. Therefore, even in a state before applying normal make-up, it can go out to the public without hindrance.

  In addition, since the dyeing stays in the shallow part of the skin, the formed eyebrow shape disappears with the epidermis desquamation within a few days to a week. Therefore, during that time, the eyebrow shape is maintained, and the practically no problem is maintained. In this respect, it has a different convenience from semi-permanent tattoos.

  The pseudo eyebrow forming cosmetic of the present invention contains a compound that reacts with a skin component and colors in the applied part. Examples of such compounds include polyhydroxy ketones such as dihydroxyacetone (1,3-dihydroxy-2-propanone) and erythrulose (1,3,4-trihydroxy-2-butanone). One species can be used alone, or two or more species can be used in combination. In particular, dihydroxyacetone is preferred because it is readily available and has excellent color development on the skin.

  Although content of said skin coloring compound is based also on the kind and cosmetics dosage form, Preferably it is 0.1-100 mass%, More preferably, it is 1-50 mass%. Moreover, in the case of powder cosmetics, 10-50 mass% is preferable, and in the case of liquid cosmetics, 1-20 mass% is preferable.

  In addition, dihydroxyacetone itself is a white crystalline compound that hardly reacts with the skin component as it is, but is considered to develop color by reacting with the skin component when dissolved in water. For this reason, it is more effective when used by being dissolved in water, but even if it is in powder form, it is dissolved by moisture on the skin and in the air, penetrates into the skin and exhibits a coloring function.

  The pseudo eyebrow forming cosmetic of the present invention can be made into various shapes of cosmetics together with raw materials generally applicable as eyebrow cosmetics. Such cosmetics may not be particularly colored per se, but may contain pigments and may be colored to some extent. It can also be used as an eyebrow base.

  Examples of the pigment used together with the artificial eyebrow cosmetic of the present invention include black iron oxide, yellow iron oxide, red iron oxide, titanium oxide, carbon black and other colored pigments, extenders such as talc, mica and sericite, and pearl pigments. Is mentioned.

  In order to make the artificial eyebrow forming cosmetic of the present invention into a pencil shape, a small amount of liquid oil and pigment and the skin dyeing component of the present invention are kneaded with the solid oil. Examples of the solid or liquid oil include stearic acid, mole, beeswax, solid paraffin, petrolatum, lanolin, liquid paraffin, and isopropyl myristate.

  When the artificial eyebrow forming cosmetic of the present invention is made into a powdered solid, a small amount of a binder such as an oil is added to the pigment and the skin dyeing component of the present invention and pressed or cast into a container for molding. In this case, an eyebrow shape can be drawn on a desired part using tools such as a brush, a tip, and a sponge.

  When the pseudo eyebrow forming cosmetic of the present invention is in a liquid state, a film forming resin such as an acrylic polymer emulsion can be used as an aqueous system to make the eyebrows themselves appear dark. In this case, the artificial eyebrow forming cosmetic can be filled in a container with a brush, and the shape of the eyebrow can be drawn at a desired site using a brush.

  Next, the present invention will be described in detail with reference to examples.

  An eyebrow base (Example 1) having the composition shown in Table 1 was prepared by a conventional method.

  A liquid eyebrow (Example 2) having the composition shown in Table 2 was prepared by a conventional method.

  Powder eyebrow (Example 3) having the composition shown in Table 3 was prepared by a conventional method.

  The performance of the artificial eyebrow cosmetics of Examples 1 to 3 prepared as described above was evaluated by the following method. As a comparative example, the eyebrow base dihydroxyacetone in Example 1 was replaced with purified water (Comparative Example 1).

1. Staining experiments with arms:
A cosmetic is applied to the inner side of the subject's forearm and examined for staining. The time to apply and leave was set to 10 hours per day in consideration of the actual use conditions of the cosmetics, and was continuously applied for 3 days. The skin color change by application and the color fading change after application stop were measured over time by the color difference (ΔE *) from the bare skin color before the start.

  A result is shown by the value which offset the daily fluctuation | variation of the bare skin color by the measured value of a non-application part.

2. Coloring experiment with eyebrows:
The eyebrow base of Example 1 was applied in the morning to the eyebrows of subjects (three women) whose skin was conditioned, and a normal foundation or other makeup was applied thereon. The application time was 12 hours until the subject's makeup was removed, and the application was continued for 3 days. According to the following criteria, the color change of the eyebrow skin until 3 days after the start of application and the color change after discontinuation of use were evaluated.

<Evaluation criteria>
0: No coloring on the background of the eyebrows.
1: The color of the background is faintly seen on part of the eyebrows.
2: The coloring of the background of the entire eyebrows can be seen.
3: The background of the entire eyebrows is clearly colored.

  In general, in the skin color region, the color difference can be recognized visually by ΔE * ≧ 1, but as can be seen from Table 4, all the cosmetics of Examples 1 to 3 have a clearly visible skin color change within 3 days of application. Occurs and returns to the skin color before application 7 days after discontinuation.

  As shown in Table 5, even when actually applied to the eyebrows, coloring occurred on the background of the eyebrows, and the color faded 5 days after the application was stopped.

Claims (6)

A cosmetic that is selected from dihydroxyacetone and erythrulose, contains a compound that reacts with the skin component and colors, and is used to draw the shape of the eyebrows. A pseudo-eyebrow cosmetic that is dyed by reacting with the skin components and coloring .   The artificial eyebrow cosmetic according to claim 1, wherein the compound that reacts with the skin component and colors is dihydroxyacetone.   The pseudo eyebrow cosmetic according to claim 2, wherein the content of dihydroxyacetone is 0.1 to 50% by mass.   The pseudo eyebrow forming cosmetic according to any one of claims 1 to 3, further comprising another coloring material.   A method for forming a pseudo eyebrow, wherein a cosmetic containing a compound that reacts with a skin component and is colored, selected from dihydroxyacetone and erythrulose, is applied to the skin of the eyebrow portion of the face to draw an eyebrow shape.   The method of forming a pseudo eyebrow according to claim 5, wherein the cosmetic is applied before going to bed, and an eyebrow shape is formed when waking up.