KR100525905B1 - Photochromic pack cosmetics compositions - Google Patents

Abstract

The present invention relates to a photosensitive pack cosmetic composition, by dispersing clay minerals and white pigments and photochromic inorganic pigments to increase the coating power, increase the drying speed of the coating, increase the exfoliation power of the skin and with the drying time of the coating according to the light The user can visually check when the pack is removed as the color changes, maximizing ease of use and pack effect.

Description

Photosensitive Pack Cosmetics Compositions

The present invention relates to a photosensitive pack cosmetic composition, and more particularly, to disperse clay minerals and white pigments and photochromic inorganic pigments to increase the coating power, increase the drying speed of the coating, increase the skin exfoliation power and light up to dry time The present invention relates to a photosensitive pack cosmetic composition that maximizes convenience and pack effect by allowing a user to visually check the time of removing the pack according to the color change of the film.

In general, the pack cosmetics are equipped with various types of materials and functions, and when classified by form, there are formulations such as a peel off type, a wash off or tissue off type, a solidified peeling type, and an application type.

Among the functions of the pack, it has a clean, moisturizing, softening effect, and the absorption of the active ingredient, which removes waste, sebum, dead skin, etc. by giving skin tension as it dries, and the difference in usage method, user's taste, protection of special parts, It has advantages and disadvantages of formulation according to the management and the user selects it in consideration of convenience and effect of each type. In recent years, in addition to the function of the pack, there has been a great interest in the coating power that is in close contact with the skin in use, the appearance of the dryness on the skin after application, the satisfaction of the pack use effect, and the satisfaction during or after use.

However, pack studies have been focused on the increase in skin coverage and the speed of drying the film.

Therefore, it was difficult to visually distinguish the removal time of the pack according to the drying of the film after applying the skin, and there was an inconvenience of removing the removal time arbitrarily only by the feeling of the user's hand or the user's feeling.

Of course, even if you specify a certain time, there was always the inconvenience that the user must check the time one by one. In addition to the inconvenience of the user, due to the lack of proper control of the time to remove the pack is not enough to the effect of the pack due to early removal, the pack effect was not sufficient enough, the user can use the pack more than the unnecessary time due to the late removal I felt uncomfortable. Despite these inconveniences, so far only the study of the pack formulation and the study of the effect function of the pack have been focused, and there have been no studies on the convenience of consumers regarding when and when the user should remove the pack.

Accordingly, the present invention is to overcome the above problems, and to provide a pack cosmetic composition that can maximize the convenience of use and pack effect by making the pack removal time visible.

The above object of the present invention can be achieved by combining and using a white pigment and a photochromic inorganic pigment.

Pack cosmetic composition of the present invention is 0.5 to 30 parts by weight of clay mineral consisting of 1: 3 to 1:10 ratio of bentonite and kaolin, 0.5 to 1:15 ratio of titanium dioxide and photochromic inorganic pigment 0.5 It contains -30 parts by weight.

In such a pack cosmetic composition, the bentonite and kaolin are preferably natural hydrated aluminum silicates.

In addition, the photochromic inorganic pigment is preferably a pigment obtained by treating the surface of titanium dioxide using a coprecipitation method and heat-treating the same.

The pack cosmetic composition of the present invention can remove the visible visual rejection due to the excellent color change with light up to drying time and increase the skin coverage, and can visually feel the time to remove the pack, convenience of use and pack effect To maximize.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

As described above, in the pack cosmetic composition of the present invention, 0.5 to 30 parts by weight of clay mineral having a ratio of bentonite and kaolin in a ratio of 1: 3 to 1:10, and a ratio of titanium dioxide and a photochromic inorganic pigment is 1:10 to 1 : 15 to 0.5 to 30 parts by weight.

Pack cosmetic composition of the present invention has a photosensitivity, the phenomenon that the color of the material changes in response to external stimulation is called chromism, in particular when the color of the material changes when light is irradiated to a material This is called photochromism, and the photochromic inorganic pigment causes color change according to light.

Such photochromic inorganic pigments are used in combination with the white pigment titanium dioxide to compensate for the poor usability and coating power of the pack. At this time, the diameter of the titanium dioxide used as a white pigment is 20 ~ 400nm.

And the pack cosmetic composition is applied to the present invention is the best bentonite and kaolin among the various clay minerals in order to smoothly apply and improve skin adhesion, the ratio is bentonite to kaolin 1: 3 to 1:10 can be used in the range , Preferably 1: 4 to 1: 6.

The clay mineral used in the present invention is a clay thickener made of magnesium aluminum silicate as smectite, and bentonite, kaolin, and the like are naturally hydrated aluminum silicates according to their composition. It is classified into lite, nontronite, saponite, and rectite.

In addition, as the powders used in the present invention, an inorganic pigment obtained by treating the surface of titanium dioxide using a coprecipitation method and heat-treating the same was used.

In addition, carboxymethyl cellulose having excellent coating ability and excellent washing property was used as a coating agent, and 1,3-butylene glycol, glycerin, polyethylene glycol 300, 400, 1500 or propylene glycol may be used as a moisturizing agent.

On the other hand, in the manufacturing process of the pack, the overall conditions according to the order of input and the temperature and stirring conditions are important, and the mechanism for stabilizing the dispersion may use a mechanical force or a method using a dispersant. The production method of the dispersion system is divided into a method of gathering molecules, ions and the like into fine particles and a dispersion method of crushing alleles into fine particles. Collimal Mill, Roller Mill, or propeller type agitator is used. In dispersing the powder in the dispersion medium using these mixers, 1) mixing and mixing three components of powder, dispersion medium and dispersant at the same time in preparation and mixing method 2) dissolving or dispersing the dispersant in the dispersion medium in advance Method of adding 3) Pigment is added to the dispersion medium, mixed, and then mixed again by adding a dispersant. 4) The surface of the pigment used in advance is coated with a dispersant and mixed in the dispersion medium at the time of manufacture.

Therefore, the pack cosmetic composition of the present invention can also be prepared by selecting one of the above methods.

Method for producing a photosensitive pack cosmetic composition selected in the present invention is as follows.

First, the clay mineral, dispersant, moisturizer, titanium dioxide, and photochromic inorganic pigment are added and dispersed in the aqueous phase, and then the coating agent is dispersed and dissolved and heated to 75 to 80 ° C. At this time, the powder stream is pulverized into primary particles as much as possible with a mill and dispersed stably using a dispersant. Another container is used to disperse the alcohol phase to which the preservative or surfactant is added to the heated aqueous phase portion. After the defoaming and filtration process to prepare a photosensitive pack cosmetic composition.

Hereinafter, the present invention will be described in more detail with reference to the following examples.

Examples 1 to 3 and Comparative Examples 1 and 2

Using the components shown in Table 1 below, the pack was prepared according to the above-described manufacturing method.

TABLE 1

※ The titanium dioxide used in the said Example and the comparative example is 1 type of crystalline form of anatase, rutile, and burkit.

Stability evaluation

Stability evaluation was performed on the packs prepared according to Examples 1 to 3 and Comparative Examples 1 and 2. As a method of stability evaluation, defects of cotton and sedimentation due to the precipitation of titanium dioxide after centrifugation and 3 months (40 ° C.) after 1 day of manufacture were visually determined, and the results are shown in Table 2 below. The centrifuge was compared after 15 minutes of separation at 9244G using DuPont's Sorval RC 28C model.

TABLE 2

From the results of Table 2, it can be seen that the Example is similar to the Comparative Example in the stability of the pack of the Pack and Example of the Comparative Example and the stability was excellent.

Exfoliation and Drying Speed Comparison

To evaluate the exfoliation effect, the Hilltop Chamber containing 0.4 ml of 10% DHA (dihydroxyacetone) solution was attached to the inner region of the upper arm for 1 hour and then removed. In order to increase the degree of pigmentation, the procedure was repeated after 6 hours, and after 24 hours, the coloring site was measured by a colorimeter (CR-200 of Minolta).

After 1 g of the sample was applied to the coloring site and dried for 15 minutes, the dried sample was removed from the flowing water and the degree of coloring was measured with a colorimeter.

The degree of coloring before and after application of the sample was compared with the ΔE value in the colorimeter, and the larger the value, the better the exfoliation.

The drying rate was measured by the drying loss over time for a certain amount (1g).

After using ESPEC's thermo-hygrostat, humidity was maintained at 70% and a temperature of 36,5 ° C., and then the pack composition was evenly measured on a saale dish, and the faster the drying rate, the better.

TABLE 3

The exfoliation effect (ΔE) in Table 3 was calculated according to the following equation 1, the greater the value was evaluated to be excellent exfoliation effect.

[Equation 1]

Wherein L, a and b are as follows.

L: lightness (100 = white, 0 = black)

a: equator (redness,-= green, + = red)

b: yellowness (-= blue, + = yellow)

According to the results of Table 3, it can be seen that the Example has a faster drying speed and excellent exfoliation effect than Comparative Examples 1 and 2.

Customer sensory test

20 females of 20 to 35 years of age were evaluated for the preference of the pack and the feeling of skin coverage according to the color change after drying after applying the products of Comparative Examples and Examples according to the general usage. It is shown in Tables 4 and 5 below.

The evaluation score was calculated by Equation 2 below with a very satisfied 5 points, a satisfied 4 points, an average 3 points, a bad 2 points, and a very bad 1 point, and the results are shown in Tables 4 and 5.

[Equation 2]

Overall score = {(very satisfied people) × 5 + (satisfied people) × 4 + (normal people) × 3 + (bad people) × 2 + (very bad people) × 1} ÷ number of people

TABLE 4

TABLE 5

As shown in Table 4 and Table 5, the Examples showed greater preference than the Comparative Examples. In particular, the combination of titanium dioxide and photochromic inorganic pigments not only has excellent skin coverage, but also increased the visual effect on color change with light from skin to drying. .

Color change before and after drying

The pack cosmetics prepared according to the Examples and Comparative Examples were measured and compared with respect to the color rendering properties of the photochromic titanium dioxide, that is, the color change according to the irradiated light.

The instrument was measured with Minolta's CR-200, and the color markings followed the color of the sitter or mooncell. 0.5 parts by weight of the prepared raw material was applied to the slide glass in the same thickness.

Samples were measured after leaving them dry in a dark room for one day before measurement. In addition, after irradiating the fluorescent lamp for 20 minutes under certain conditions, the overall color change is shown in Table 6 below.

TABLE 6

In the photochromic inorganic pigment of the present invention, in view of the results of Table 6, the width of the overall color change depends on the brightness. That is, most of the values of? E account for? L.

Therefore, according to the relative color difference according to Table 6 it can be seen that the embodiment is significantly different than the comparative example.

In the evaluation of the stability, exfoliation, and drying rate, the pack cosmetic composition according to the present invention was superior to the cosmetic composition of the comparative example, and the pack cosmetic composition according to the present invention was better than the comparative cosmetic composition in the customer sensory evaluation. The color change was remarkably different, but the visual effect was excellent, which showed a lot of preferences, the skin coverage was excellent, and the pack effect was also high.

As described above, the pack cosmetic composition of the present invention not only has excellent skin coverage, but also allows the user to visually distinguish the color due to the color change according to light until the general drying time after application, so that a suitable time for removing the pack can be visually seen. As a result, the user's convenience is greatly improved, and the user satisfaction of the pack effect is also increased.

Claims (3)

0.5 to 30 parts by weight of clay minerals having a ratio of bentonite and kaolin at 1: 3 to 1:10, and 0.5 to 30 parts by weight of titanium dioxide and a photochromic inorganic pigment at 1:10 to 1:15. Pack cosmetic composition characterized in that. The method of claim 1, The bentonite and kaolin are pack cosmetic composition, characterized in that the natural hydrated aluminum silicate. The method of claim 1, The photochromic inorganic pigment is a pack cosmetic composition, characterized in that the pigment obtained by treating the titanium dioxide surface by the coprecipitation method and heat-treating it.