KR20210116105A - Cosmetic composition of water-dispersion type comprising Natural inorganic thickener and Cellulosic thickener, and Manufacturing method thereof - Google Patents

Abstract

The present invention provides an aqueous dispersion type cosmetic material composition comprising a natural inorganic thickener and a cellulose-based thickener, and a method for manufacturing the same. By mixing and applying a cellulose-based thickener to a natural inorganic thickener, the long-term stability of a product is improved at a harsher temperature than when the natural inorganic thickener is used alone. In addition, the aqueous dispersion type cosmetic composition of the present invention has an effect of providing an environmentally friendly, harmless, and stable cosmetic composition while alleviating the sticky feeling of use by excluding synthetic polymers, and exhibiting an excellent effect on sebum absorption.

Description

A cosmetic composition of water-dispersion type comprising Natural inorganic thickener and Cellulosic thickener, and Manufacturing method thereof

The present invention relates to a water dispersion-stabilized cosmetic composition containing a mixture of a natural inorganic thickener and a cellulose-based thickener, and more particularly, when a natural inorganic thickener is mixed and added with a cellulose-based thickener, when the natural inorganic thickener is used alone It relates to a water-dispersible cosmetic composition that improves long-term stability of a product at a more severe temperature, provides a feeling of use that is less sticky than when a synthetic polymer thickener is used, and exhibits an excellent effect on sebum adsorption.

Since the emulsified particles generated in cosmetics are eventually thermodynamically separated over time, synthetic polymer thickeners are generally used in cosmetics to increase emulsion stability so that the formed emulsion is well maintained without coalescing or separating.

Because synthetic polymers have a certain molecular weight and chain characteristics, uniform increment is possible, and the chains of synthetic polymers hold each other to fix the traumatic water phase and help the emulsified particles not coalesce, so it is essential for a stable formulation. come.

However, as awareness of environmental pollution increases, consumers' movement to find safe products for daily necessities such as cosmetics as well as food is increasing. In line with this movement, many cosmetic companies are pouring out products that claim to be organic, natural, vegan, EWG green grade, and minimal. In particular, organic and natural cosmetics manufacturing guidelines restrict the use of synthetic polymers.

Therefore, the use of a natural thickener that can replace the synthetic polymer used to maintain the stability of the emulsified particles in the manufacture of cosmetics is increasing. If a natural thickener has the same thickening effect as a synthetic polymer and a product using a natural thickener has better stability, environmentally friendly, harmless and stable cosmetics can be manufactured.

Natural minerals used as natural thickeners refer to soil minerals composed of extremely fine mineral particles that make up the clay part of the soil. . It is easily transformed into other minerals by hydrothermal action or weathering action, and in the process of change, minerals with unique properties are formed and show various properties in type, particle size distribution, etc. The particle size distribution can be broadly classified into tetrahedral and octahedral types. The tetrahedral type is created by silicon-oxygen bonding (Si-O), and the octahedral type is composed of aluminum (Al), 　magnesium (Mg), and iron (Fe). It is produced by the combination of the same cation with an oxygen (O) ion. In addition, the octahedral type is divided into a 1:1 layer type and a 2:1 layer type according to the type of aluminum-oxygen (Al-O) bonding. A trioctahedral is filled with divalent cations such as divalent iron (Fe2+) and magnesium ion (Mg2+) on an octahedral plate, and a dioctahedral filled with trivalent cations such as trivalent iron (Fe3+) and aluminum ion (Al3+). It is also classified as Representative 1:1 layered clay minerals include kaolinite and serpentine, and 2:1 layered clay minerals include smectite, mica, and chlorite.

Here, natural inorganic substances belonging to the smectite group are widely used in cosmetics as a natural inorganic thickener. Such natural inorganic thickeners are less sticky than synthetic polymers and have excellent moisture absorption, so they have advantages in viscosity and moisture formation. There is this.

Korean Patent Registration No. 10-1803274

Accordingly, the present inventors have repeatedly studied to obtain a stable water dispersion type cosmetic by mixing various thickeners with natural inorganic thickeners. As a result, long-term stability of the product at a temperature under severe conditions by mixing and adding a cellulose-based thickener to a natural inorganic thickener A cosmetic composition was completed that improved the skin texture, provided a feeling of use that was less sticky than when using a synthetic polymer thickener, and showed an excellent effect on sebum adsorption.

In order to achieve the above object, the present invention contains a natural inorganic thickener and a cellulose-based thickener in an aqueous dispersion formulation to improve the stability of the product, provide a non-sticky feeling of use, and exhibit excellent sebum adsorption improving efficacy for sebum adsorption A cosmetic composition is provided.

More specifically, the water dispersion type cosmetic composition of the present invention is characterized in that it contains a natural inorganic thickener in an amount of 0.2 to 5.0% by weight based on the total weight of the composition.

Here, the natural inorganic thickener is for controlling the viscosity of the emulsion and improving the stability, and at least one selected from the group consisting of magnesium silicate, magnesium aluminum silicate, sodium magnesium silicate, bentonite and hectorite, etc. is used. .

When the content of the natural inorganic thickener is less than 0.2% by weight based on the total weight of the composition, it is difficult to obtain emulsion stability and it is difficult to realize the initial feeling of use in close contact. If it exceeds 5.0% by weight, a gelling phenomenon occurs in which the formulation is agglomerated, and it is difficult to secure a long-term preservative because the pH increases.

In addition, the water dispersion type cosmetic composition of the present invention is characterized in that it contains a cellulose thickener in an amount of 0.01 to 0.5% by weight based on the total weight of the composition.

Here, the cellulose-based thickener is a water-soluble high-molecular thickener and is a high-viscosity component, and there is little change in viscosity depending on temperature, so that viscosity can be imparted to the emulsion even at high temperatures to increase the adhesion of the contents when applied to the skin. At least one selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, methyl hydroxypropyl cellulose, and the like is used.

When the content of the cellulose-based thickener is less than 0.01% by weight relative to the total weight of the composition, not only does it not provide adhesion to the emulsion, but also the stability is deteriorated, such as water bleeding at high temperature, and when it exceeds 0.5% by weight, the viscosity is It is too high, so it is difficult to disperse in the heating process and there is a disadvantage in that the stickiness is severe.

In addition, the aqueous dispersion type cosmetic composition containing the natural inorganic thickener and the cellulose-based thickener according to the present invention is prepared by the following process.

(S1) A homogenization step of the aqueous phase by mixing a polyol moisturizing ingredient, a surfactant, a natural inorganic thickener, and a cellulose thickener in purified water (water) and heating to a temperature of 70 to 90° C.

Here, the natural inorganic thickener is included in an amount of 0.2 to 5.0% by weight based on the total weight of the composition, and the cellulose-based thickener is included in an amount of 0.01 to 0.5% by weight based on the total weight of the composition.

(S2) mixing the emulsifier and the oil component and then heating to a temperature of 70 to 90° C. to dissolve and homogenize the oil phase

(S3) adding the oil phase to the aqueous phase and stirring at a rotation speed of 2,500 to 3,500 rpm to form emulsified liquid crystal particles

(S4) adding kaolin and titanium dioxide to the mixture in which the emulsified liquid crystal particles are formed, stirring at a rotation speed of 2,500 to 3,500 rpm to uniformly disperse them

(S5) cooling the dispersion at a temperature of 45 to 50 °C

(S6) preserving the coolant and cooling it at a temperature of 30 to 35°C

The water dispersion type cosmetic composition of the present invention improves the long-term stability of the product at a harsher temperature than when the natural inorganic thickener is used alone by mixing and applying a natural inorganic thickener with a cellulose-based thickener.

In addition, the water dispersion type cosmetic composition of the present invention has an effect of providing an environmentally friendly, harmless and stable cosmetic composition while improving the sticky feeling of use by excluding synthetic polymers, and exhibiting an excellent effect on sebum absorption.

1 is a photographic view showing the stability of the water dispersion type cosmetic composition according to the present invention.
Figure 2 is a photograph of a comparative example.
3 is a view showing the evaluation of moisturizing and lasting moisturizing power of the water dispersion type cosmetic composition according to the present invention.
4 is a view showing the gloss improvement effect of the water dispersion type cosmetic composition according to the present invention.
5 is a view showing the pore improving effect of the cosmetic composition of the present invention.
6 is a view showing the effect of improving sebum secretion control of the water dispersion type cosmetic composition according to the present invention.

Hereinafter, the present invention will be described in more detail through examples. These examples are for explaining the present invention in more detail, and the scope of the present invention is not limited to these examples.

<Examples 1-2> Preparation of water dispersion type cosmetic composition

As shown in [Table 1] below, the aqueous phase was put into a vacuum emulsification tank capable of temperature control and stirring, and dissolved by heating to 70 to 90 °C. In addition, the oil phase was mixed in a separate emulsifying tank and then dissolved by heating at a temperature of 70 to 90 °C. The oil phase and the powder phase were sequentially added to the aqueous phase, and the aqueous phase, oil phase and powder phase were uniformly mixed by stirring at a rotation speed of 2,500 to 3,500 rpm using a stirrer. The mixture was cooled with stirring at 45° C. using a paddle. Thereafter, the obtained cosmetic composition was preserved and cooled to 35° C. to finally prepare an aqueous dispersion type cosmetic composition containing a natural inorganic thickener and a cellulose-based thickener.

<Comparative Examples 1 to 5> Preparation of water dispersion type cosmetic composition

According to the composition and content shown in [Table 1] below, a cosmetic composition was prepared.

[Table 1]

<Experiment result>

The high temperature stability test result at 50° C. after 3 months of the aqueous dispersion type cosmetic composition prepared in Example 1 of the present invention is shown as an external photograph in FIG. 1 .

As shown in FIG. 1, when a natural inorganic thickener and a cellulose-based thickener are mixed, a stable structure is formed, and there is no abnormality such as water leaking, which is a disadvantage when using a natural inorganic thickener alone, even under severe conditions such as 50 ° C. was confirmed.

The result of conducting the experiment by changing the content of the cellulosic thickener outside the content numerical range of Examples and the mixing content of the natural inorganic thickener is shown as a comparative example.

In Comparative Examples 1 and 2, the experiment was conducted by fixing the content of the cellulose-based thickener to 0.2% by weight and changing the content of the natural inorganic thickener, which plays a main thickening role.

As in Comparative Example 1, when the content of the natural inorganic thickener was 0.1% by weight, the content was insignificant, so that no viscosity was formed, and an appearance that could be used as an aqueous dispersion type cosmetic composition was not formed.

In addition, as in Comparative Example 2, when the content of the natural inorganic thickener was 6% by weight, stirring was possible to some extent in the 70 to 90 ℃ heating process due to excessive viscosity formation in the aqueous phase, but in the 50 ℃ cooling process, it is generally not possible to prepare A level of agglomeration occurred.

In Comparative Example 3, the content of the natural inorganic thickener, which plays the main thickening role, was fixed at 2% by weight and no cellulosic thickener was added, and the test results for this were shown as an appearance photograph in FIG. 2 .

As shown in FIG. 2 , it was confirmed that the water leaking phenomenon occurred in one day at high temperature (44° C.), so that the stability at high temperature was not good.

In addition, as in Comparative Example 4, when the content of the natural inorganic thickener, which plays a main thickening role, was fixed to 2% by weight and the content of the cellulosic thickener was added to 0.005% by weight, the first week at high temperature (44°C) It was confirmed that it was stable until the 2nd week, but it was confirmed that water came out from the 2nd week, and it was confirmed that the cellulose thickener affects stability improvement when mixed with natural inorganic thickeners, but the content is insufficient.

In addition, as in Comparative Example 5, when the content of the natural inorganic thickener, which plays a main thickening role, is fixed to 2% by weight and the content of the cellulose-based thickener is added to 1% by weight, dispersion from the heating process at 70 to 90° C. This was difficult, and the 50° C. cooling process exhibited a level of properties that could not be generally manufactured, and exhibited a level that could not be used due to very severe stickiness.

From these results, the aqueous dispersion type cosmetic composition prepared in Examples 1 and 2 improves the long-term stability of the product at a severe temperature when using a cellulosic thickener rather than when using a natural inorganic thickener alone, and a synthetic polymer thickener It was confirmed that the mixing ratio was suitable for use as an aqueous dispersion type cosmetic composition that provides a more non-sticky feeling when used and exhibits an excellent effect on sebum adsorption, and can realize a feeling of use and properties.

<Confirmation of moisturizing and lasting moisturizing power evaluation>

In order to confirm the evaluation of the moisturizing and lasting moisturizing power of the water dispersion type cosmetic composition prepared in Examples 1 and 2, before application of the water dispersion type cosmetic composition using a skin diagnostic device (Janus), immediately after application and washing, and after 6 hours of washing Moisture was measured.

As a result, as shown in FIG. 3, immediately after applying and washing the water dispersion type cosmetic composition, a temporary increase in moisturizing power of 17.6% occurred compared to before application, and 6 hours after washing, the moisturizing power increased by 11.7%, and the durability of moisturizing was confirmed. .

That is, it can be seen that the water dispersion type cosmetic composition according to the present invention has improved moisturizing and lasting moisturizing effect.

<Check gloss improvement evaluation>

In order to confirm the evaluation of improvement in gloss of the aqueous dispersion cosmetic composition prepared in Examples 1 and 2, the improvement in glossiness was measured before application of the aqueous dispersion cosmetic composition, immediately after application and washing, and after washing for 6 hours.

As a result, as shown in FIG. 4, immediately after application and washing of the aqueous dispersion type cosmetic composition, the gloss increased by 14.5% compared to before application, and it was confirmed that the gloss increased and the gloss continued even after 6 hours compared to before application. .

<Confirmation of improvement evaluation of pore and sebum secretion control>

In order to confirm the evaluation of improvement in pore and sebum secretion control of the water dispersion type cosmetic composition prepared in Examples 1 and 2, the improvement in pore and sebum secretion control before and after application of the water dispersion type cosmetic composition was measured.

As a result, as shown in FIGS. 5 and 6 , immediately after application and washing of the aqueous dispersion type cosmetic composition, a temporary pore reduction effect of about 10% was observed compared to before application, and it was confirmed that the amount of sebum secretion was reduced by about 72%.

Claims (15)

An aqueous dispersion type cosmetic composition comprising a natural inorganic thickener and a cellulose thickener.
The method of claim 1,
The water dispersion type cosmetic composition, characterized in that the natural inorganic thickener is contained in an amount of 0.2 to 5.0% by weight based on the total weight of the composition.
The method of claim 1,
The natural inorganic thickener is an aqueous dispersion type cosmetic composition, characterized in that at least one selected from the group consisting of magnesium silicate, magnesium aluminum silicate, sodium magnesium silicate, bentonite and hectorite.
The method of claim 1,
The cellulose-based thickener is an aqueous dispersion type cosmetic composition, characterized in that it is contained in an amount of 0.01 to 0.5% by weight based on the total weight of the composition.
The method of claim 1,
The cellulose-based thickener is an aqueous dispersion type cosmetic composition, characterized in that at least one selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, and methyl hydroxypropyl cellulose.
The method of claim 1,
The water dispersion type cosmetic composition is a water dispersion type cosmetic composition, characterized in that it improves the long-term stability of the product at a high temperature.
The method of claim 1,
The water dispersion type cosmetic composition is a water dispersion type cosmetic composition, characterized in that it improves the non-sticky feeling of use, moisturizing and lasting moisturizing effect and sebum adsorption effect.
a homogenizing step (S1) of the aqueous phase of mixing and heating a natural inorganic thickener and a cellulose-based thickener;
Mixing and heating the emulsifier and oil to dissolve and homogenize the oil phase (S2);
Forming emulsified liquid crystal particles by adding the oil phase to the aqueous phase and stirring (S3);
In the mixture in which the emulsified liquid crystal particles are formed, kaolin and titanium dioxide are added and stirred to uniformly disperse (S4); and
Cooling the dispersion (S5); Water dispersion type cosmetic composition manufacturing method, characterized in that it comprises a.
9. The method of claim 8,
The method of manufacturing an aqueous dispersion type cosmetic composition, characterized in that it further comprises a; step (S6) of cooling by preserving the cooling water cooled through the step S5.
9. The method of claim 8,
The heating process of the aqueous phase part of the step S1 and the oil phase part of the step S2 is a method for producing an aqueous dispersion cosmetic composition, characterized in that each is made at a temperature of 70 to 90 ℃.
9. The method of claim 8,
The stirring process of step S3 and step S4 is a method for producing an aqueous dispersion cosmetic composition, characterized in that the rotation speed of 2,500 to 3,500 rpm, respectively.
9. The method of claim 8,
The cooling process of step S5 is a method for producing a water dispersion type cosmetic composition, characterized in that made at a temperature of 45 to 50 ℃.
10. The method of claim 9,
The cooling process of step S6 is a method for producing a water dispersion type cosmetic composition, characterized in that made at a temperature of 30 to 35 ℃.
9. The method of claim 8,
In the step of equalizing the water phase of S1,
The aqueous dispersion type cosmetic composition manufacturing method, characterized in that it further comprises water, a polyol moisturizing component and a surfactant in the water phase part.
9. The method of claim 8,
In the step of equalizing the water phase of S1,
The natural inorganic thickener is 0.2 to 5.0 wt% based on the total weight of the composition, and the cellulose-based thickener is included in an amount of 0.01 to 0.5 wt% based on the total weight of the composition.

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