KR101503925B1 - Cosmetics composition comprising polygonum indigo dye - Google Patents

Abstract

More particularly, the present invention relates to a cosmetic composition comprising a dye selected from the group consisting of cellulose, silk, polyester, nylon and polymethylmethacrylate. The present invention provides a cosmetic composition comprising a side dye powder prepared by dyeing with a dye of the formula

The composition of the present invention can prevent various problems such as skin irritation, odor, color discoloration, and dyeing as well as various colors including skin-stable side dye which can replace the conventional chemical dye.

Side, dye, dye, hue, cosmetics, cleanser

Description

COSMETICS < / RTI > COMPOSITION COMPRISING POLYGONUM INDIGO DYE < RTI ID = 0.0 >

The present invention relates to a cosmetic composition comprising a dyed powder obtained by dyeing a dye for cosmetic use, and more particularly to a cosmetic composition comprising a dyed powder obtained by dyeing a dye for cosmetic use, The present invention relates to a cosmetic composition which provides a beautiful indigo color and is safe to the skin by applying the dyed powder developed in order to drastically improve the instability and safety of the skin to be dyed to the skin.

In general, chemical dyes (Dye) are used in cosmetics and detergents. These dyes stimulate the skin and can cause serious side effects, especially when in the eyes. Therefore, in general, various formulation studies have been carried out to minimize the use of chemical dyes, while development of dyes that minimize irritation has been proceeding.

Therefore, interest in various natural dyes has been increasing, and studies for the development of natural color have been made. However, there is no stimulation of the skin yet and development of a pigment that can solve the unstable problem of the natural pigment has not been developed yet.

Meanwhile, the side Persicaria tinctorium , Persicaria tinctoria , Isatis tinctoria, Isatis . It is a plant pigment with the scientific name of Indigotica, known as "polygonum indigo". The side dye is obtained by treating alkaline electrolytic water and calcium hydroxide with the extract obtained from the leaves and stems of the plant. The above-mentioned coloring matter has been known since ancient times, and has been known for its effects such as anti-inflammation and anti-allergy.

However, Indigo is a dark blue color that is difficult to dissolve in water or alcohol, dissolves only in alkaline conditions, is unstable to light and oxygen, and is not only discolored but also has a disadvantage of sticking to skin There are not many examples applied to actual products.

In order to solve the problems of the prior art, the present invention is to provide a cosmetic composition showing a beautiful indigo by applying stable and safe dyeing powder which can not be found in any conventional application to a cosmetic composition.

The present invention also aims to provide a cosmetic composition comprising a side dye powder not only having no skin irritation but also exhibiting excellent hue as a natural coloring matter.

The present invention provides a cosmetic composition comprising a side dye powder prepared by dyeing a powder selected from the group consisting of cellulose, silk, polyester, nylon and polymethylmethacrylate with a side dye.

It is preferable that the one dye is reduced by a fermentation staining method or a hydrosulfite method. The content of the dyed powder may be 0.00001 to 50% by weight, more preferably 0.0001 to 30% by weight, based on the whole cosmetic composition.

Hereinafter, the present invention will be described in more detail.

The inventors of the present invention found that, while researching various natural pigments that can substitute chemical pigments in cosmetics and can realize stable and beautiful colors on skin as the demands for stable and safe natural pigments increase, . That is, when a garment is produced by dyeing a dye which is difficult to use due to its physical properties and stability, it is not discolored by sunlight or oxygen, Even when the fabric is washed, its color is maintained. From this, the present inventors have found that the same method as that of the above-mentioned dyeing can be applied to cellulose, silk, polyester, nylon, polymethylmethacrylate, It was judged that the color pigment powder obtained by staining the coloring matter in the powder was also stable, and this was applied to a cosmetic composition to complete the present invention. At this time, the silk powder, nylon powder, polyester powder, polymethylmethacrylate powder and the like can be used in cosmetics for the purpose of forming a component of scrub or bead or a film.

Accordingly, the present invention provides a dyeing powder which is a stable natural dye powder by extracting and reducing the pigment of the plant under alkaline conditions, dyeing it with various powders, washing and oxidizing it to complete dyeing. At this time, the oxidation is carried out by air in the process of washing the stained and dried powder. In addition, the side dye powder can be applied as a pigment of a general cosmetics, in which the emulsion formulation exists in a dispersed state, and is applicable as a substitute for a chemical dye in a color tone product. Further, the side dye powder may be prepared into particles by using various binders. The resulting dyed powder is included in the cosmetic composition in an effective amount to improve the instability of the natural pigment and does not cause problems such as skin irritation or salt formation.

Preferably, the present invention relates to a method for reducing cosmetics powder having a particle size of 10 to 15 um selected from the group consisting of cellulose, silk, polyester, nylon and polymethylmethacrylate, Dyeing with coloring matter, washing with water several times, and oxidizing to produce side dyeing powder.

The reduction method of the dye can be reduced by a conventional fermentation staining method or a method using hydrosulfite. Here, for example, in the case of the traditional fermentation staining method, the fresh side leaf collected in August is put in water, and the pigment is scratched for 4 days. Then, the scallop shell is baked at a high temperature to the scarlet pigment, Is stirred until the color of the pigment becomes cyan, and then the precipitate is filtered to prepare a pigment powder. For dyeing, add dye to the lye and ferment at 30 ℃ for 10 days to separate the pigment and lime powder. If it becomes yellow, you can dye the cloth and wash it in clear water.

In addition, since the side dyeing method can be generally performed by a well-known method, the method of the side dyeing is not particularly limited. Therefore, the same method can be used to produce the side dye powder of the present invention by any of the conventional methods.

On the other hand, when the cosmetic composition is prepared using the above-mentioned dyed powder, its content is preferably 0.00001 to 50 wt%, more preferably 0.0001 to 30 wt%, based on the total cosmetic composition. When the content is less than 0.00001% by weight, color representation is difficult. When the content is more than 50% by weight, there is no color change.

The cosmetic may comprise conventional emulsion formulations or solid color cosmetics.

In addition, the above-mentioned dyed powder is dispersed in general emulsion formulations such as lotion, cream, gel type skin, ointment, essence, make-up base, foundation, lip gloss and so on so that various colors can be expressed from light sky to blue have. In addition, according to the present invention, chemical dyes added to two-way cake, eye shadow, ball touch, makeup powder, lipstick, etc., which are solid color cosmetics, can be replaced with side dyed powders,

At the same time, in the case of the present invention, it is possible to provide a safe natural pigment without skin irritation, odor, color discoloration, and staining when applied to various cosmetic compositions.

As described above, since the side dye powder according to the present invention does not cause skin seizure and irritation, it is a stable natural dye having remarkably improved instability of a conventional natural dye, so that a cosmetic composition capable of realizing various colors according to its content is provided .

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the scope of the present invention is not limited to the following examples.

Manufacturing example  One

10 g of POLYGONUM INDIGO, which was purchased in the market, was dissolved in water at 60 to 70 캜 and cooled to about 40 캜. Subsequently, a soda ash solution (5 g / 30 ml) and a hydrous sulfite solution (5 g / 30 ml) were added to the dye, and the mixture was stirred at 40 ° C for 2 hours. At this time, the solution of the pigment is changed from blue to green color. 100 g of the prepared cellulose powder was added to the solution changed to the green color, and the mixture was stained with weak stirring for 10 minutes. Then, the resultant was washed with cold water at least five times using a filtration apparatus, and dried to prepare a blue dyeing powder. At this time, the washed powder was washed with ethanol solution 1 to 2 times and dried to facilitate drying.

Manufacturing example  2

10 g of POLYGONUM INDIGO, which was purchased in the market, was dissolved in water at 60 to 70 캜 and cooled to about 40 캜. Then, a soda ash solution (2 g / 30 ml) and a hydrosulfite solution (2 g / 30 ml) were added to the coloring matter, and the mixture was stirred at 40 ° C for 3 hours. At this time, the solution of the pigment is changed from blue to green color. 100 g of the prepared silk powder was added to the solution changed to the green color, and the mixture was stained for 30 seconds with slight stirring. Then, the resultant is rapidly washed with cold water at least five times using a filtration apparatus and dried to prepare a blue dyeing powder. At this time, the washed powder was washed with ethanol solution 1 to 2 times and dried to facilitate drying.

Manufacturing example  3

10 g of POLYGONUM INDIGO, which was purchased in the market, was dissolved in water at 60 to 70 캜 and cooled to about 40 캜. Subsequently, a soda ash solution (5 g / 30 ml) and a hydrous sulfite solution (5 g / 30 ml) were added to the dye, and the mixture was stirred at 40 ° C for 2 hours. At this time, the solution of the pigment is changed from blue to green color. 100 g of the prepared polyester powder was added to the solution changed to the green color, and the mixture was stained for 10 minutes with slight stirring. Then, the dyeing solution of blue color was prepared by washing and drying the dyeing solution using a filtration apparatus at least five times in cold water. At this time, the washed powder was washed with ethanol solution 1 to 2 times and dried to facilitate drying.

Example  1 and Comparative Example  One

Creams of Example 1 and Comparative Example 1 were prepared using commercially available dyes and the dyed powder prepared in Preparation Example 1.

[Table 1]

Category (% by weight) Example 1 Comparative Example 1 - side dyeing powder (Preparation Example 1)
- side pigment (commercial product)
- Stearic acid
- Cetanol
- potassium hydroxide
-glycerin
- propylene glycol
-antiseptic
-incense
-Purified water 0.1
-
15.0
1.0
0.7
5.0
3.0
Suitable amount
Suitable amount
to 100 -
0.1
15.0
1.0
0.7
5.0
3.0
Suitable amount
Suitable amount
to 100

Example  2, Comparative Example  2

The eye shadows of Example 2 and Comparative Example 2 were prepared using commercially available dyes and the dyed powder prepared in Preparation Example 1.

[Table 2]

Category (% by weight) Example 2 Comparative Example 2 - side dyeing powder (Preparation Example 1)
- side pigment (commercial product)
-Mg-myristate
-Zn-stearate
- Titanium oxide
-Boron Nitride
- Titanium mica
- Oil binders
-antiseptic
-incense
- Talc 4
-
8
2
5
6
5
5
Suitable amount
Suitable amount
to 100 -
4
8
2
5
6
5
5
Suitable amount
Suitable amount
to 100

Experimental Example  One

In order to evaluate the color stability of Examples 1 and 2 and Comparative Examples 1 and 2, the stability was evaluated after being left in a thermostat at 45 ° C and 4 ° C for 30 days, respectively. Further, after 30 days in daylight and 7 days in ultraviolet light, the stability to light was evaluated. The results are shown in Table 3. Stability was assessed using the 3-point scaling method (3: stable, 2: slightly stable, 1: unstable)

[Table 3]

Example 1 Example 2 Comparative Example 1 Comparative Example 2 45 ° C 3 3 One One 4 ℃ 3 3 One One daylight 3 3 One One UV-rays 3 3 One One

Experimental Example  2

Twenty healthy men and women were selected from eye shadows of Example 2 and Comparative Example 2, applied to the lower part of both arms in a diameter of 20 mm, covered with gauze, and fixed with tape. After 8 hours, the skin was wiped with a cleansing cream, and the degree of skin irritation was evaluated. The results are shown in Table 4. The degree of saponification was evaluated by the 3-point scale method (3: severe seawater, 2: weak seawater, 1: no seawater).

[Table 4]

Example 2 Comparative Example 2 45 ° C One 3 4 ℃ One 3 daylight One 3 UV-rays One 3

From the results of Tables 3 and 4, it was found that the cream and eye shadow using the side dye powder of the present invention had excellent stability in the formulation at 45 ° C and 4 ° C, and were not discolored even in daylight and ultraviolet rays. In addition, it was found that the skin was not stained and was stable and safe natural pigment. In conclusion, it was confirmed that the side dye powder was a safe material because no stimulus was observed in 20 skin irritation tests.

Claims (5)

And a side dye powder prepared by dyeing a powder having a particle size of 10 to 15 um selected from the group consisting of cellulose, silk, polyester, nylon and polymethylmethacrylate with a side dye. 2. The cosmetic composition according to claim 1, wherein the dye is reduced by a fermentation staining method or a method using hydrosulfite. The cosmetic composition according to claim 1, wherein the content of the side dye powder is 0.00001 to 50% by weight based on the total composition. 4. The cosmetic composition according to claim 3, wherein the content of the side dye powder is 0.001 to 30% by weight based on the total composition. The cosmetic composition of claim 1, wherein the cosmetic composition comprises a formulation of lotion, cream, gel type skin, ointment, essence, makeup base, foundation, lip gloss, two way cake, eye shadow, ball touch, makeup powder, , Cosmetic composition.