CN109276464B

CN109276464B - Water drop solid type ultraviolet-proof cosmetic composition

Info

Publication number: CN109276464B
Application number: CN201710743564.8A
Authority: CN
Inventors: 金勇佑; 洪元基; 李南喜
Original assignee: Kolmar Korea Co Ltd
Current assignee: Kolmar Korea Co Ltd
Priority date: 2017-07-21
Filing date: 2017-08-25
Publication date: 2021-06-01
Anticipated expiration: 2037-08-25
Also published as: KR101923715B1; CN109276464A

Abstract

Disclosed herein are a water droplet solid type ultraviolet screening cosmetic composition and a method for preparing the same. The water droplet solid type ultraviolet screening cosmetic composition according to one aspect of the present invention can provide excellent moisturizing effect and refreshing feeling to the skin due to the water droplets generated immediately when applied to the skin. Further, the composition of the present invention has excellent formulation stability, and thus can minimize the separation phenomenon of components of the composition and uniformly apply the composition to the skin, thereby providing a uniform ultraviolet protection effect to the skin.

Description

Water drop solid type ultraviolet-proof cosmetic composition

Technical Field

Disclosed herein are a water droplet solid type ultraviolet screening cosmetic composition and a method for preparing the same.

Background

The water droplet type cosmetic means a cosmetic in which moisture contained in the cosmetic is released to the outside when applied to the skin, and water droplets are formed on the skin, thereby sufficiently supplying moisture to the skin. Recently, research is continuously being conducted to try to introduce such a water droplet type cosmetic technology into ultraviolet-shielding cosmetics. However, a cosmetic exhibiting excellent ultraviolet protection effect and having formulation stability while maintaining the properties of a water-droplet type cosmetic has not been developed yet. For example, korean patent laid-open publication No. 10-1678559 describes a water-droplet solid type water-in-oil cosmetic composition containing a modified inorganic ultraviolet screening agent powder, and has found problems that the composition is not easily formed into water droplets, the coating feel is reduced due to inherent problems of the inorganic ultraviolet screening agent, the composition has a matte feel, and there are a separation phenomenon of a preparation in which a plurality of components contained in the cosmetic composition are separated, cracks, and the like. Therefore, the moisturizing effect as the first purpose of the water droplet-type cosmetic is not sufficiently exhibited on the skin, and the ultraviolet screening agent is not uniformly dispersed on the skin due to separation of the preparation, so that the effect as the ultraviolet screening agent is very small. Therefore, it is required to develop a cosmetic composition containing an ultraviolet screening agent, which has excellent water droplet forming ability and preparation stability, and also has an excellent ultraviolet screening effect.

Documents of the prior art

Patent document

(patent document 1) KR10-2014-0081293A

(patent document 2) KR10-1678559B

Disclosure of Invention

In one aspect, the present invention aims to provide a water-droplet solid cosmetic composition having excellent ultraviolet protection effect and moisturizing effect.

In one aspect, the present invention is directed to improving the formulation stability of a water droplet solid cosmetic composition comprising an ultraviolet screening agent.

In order to achieve the above object, the present invention provides a water-droplet solid type ultraviolet screening cosmetic composition comprising: an organic anti-ultraviolet agent; an oil phase comprising an emulsifier, an oil, and a curing agent; and an aqueous phase portion containing water and not containing an inorganic ultraviolet screening agent.

The water droplet solid type ultraviolet screening cosmetic composition according to one aspect of the present invention can provide excellent moisturizing effect and refreshing feeling due to water droplets generated immediately when applied to the skin. Further, the composition of the present invention has excellent formulation stability, and thus can minimize the separation phenomenon of components of the composition and uniformly apply the composition to the skin, thereby providing a uniform ultraviolet protection effect to the skin.

Drawings

Fig. 1 is a diagram showing a state in which water droplets are formed in the composition of the present invention.

Fig. 2 shows a plurality of composition states described in comparative examples of the present specification, and shows a case where no water droplet is formed.

Fig. 3 is a view showing a state of a formulation containing an inorganic ultraviolet screening agent (fig. 3b is a side view).

Detailed Description

The present invention will be described in detail below.

The present invention is a water-droplet solid type ultraviolet-screening cosmetic composition comprising: an organic anti-ultraviolet agent; an oil phase comprising an emulsifier, an oil, and a curing agent; and an aqueous phase portion containing water and not containing an inorganic ultraviolet screening agent.

The emulsifier may include one or more selected from the group consisting of Cetyl PEG/PPG-10/1Dimethicone (Cetyl PEG/PPG-10/1Dimethicone), Lauryl PEG-8Dimethicone (Lauryl PEG-8Dimethicone), Dimethicone PEG-10/15Crosspolymer (Dimethicone/PEG-10/15 crospoloxamer), and sorbitan sesquioleate, but is not limited thereto.

The composition of one aspect of the present invention may comprise, as an emulsifier, at least one of cetyl PEG/PPG-10/1dimethicone, lauryl PEG-8dimethicone, dimethicone PEG-10/15crosspolymer, lauryl PEG-9 dimethicoxyethyl dimethicone, lauryl PEG-10 tris (trimethylsiloxy) silylethyl dimethicone, PEG/PPG-19/19 dimethicone, PEG/PPG-18/18 dimethicone, PEG-10 dimethicone, and sorbitan sesquioleate.

In one example, the above composition may comprise the following emulsifiers: cetyl PEG/PPG-10/1 polydimethylsiloxane or lauryl PEG-8 polydimethylsiloxane; polydimethylsiloxane PEG-10/15 crosspolymer; and sorbitan sesquioleate.

In one example, the composition can comprise cetyl PEG/PPG-10/1 polydimethylsiloxane or lauryl PEG-8 polydimethylsiloxane in the weight part of 1: 1-2: 0.3-1.5; polydimethylsiloxane PEG-10/15 crosspolymer; and sorbitan sesquioleate, preferably, the sorbitan sesquioleate may be contained in an amount of 1:1.5 to 2:0.5 to 1.2 parts by weight. When the emulsifier is contained in the above content ratio, a water droplet solid type ultraviolet screening cosmetic composition which contains not only the organic ultraviolet screening agent but also is excellent in water droplet forming ability and ensures formulation stability can be obtained. Further, the water droplets generated when the composition of the present invention is applied have an average diameter that is about 1.1 to 1.3 times wider than that of conventional water droplet cosmetics, and thus have a high moisture content and an excellent moisturizing effect.

In the aspect as described above, the cetyl PEG/PPG-10/1 or lauryl PEG-8 polydimethylsiloxane described above may be included in an amount of 0.2 to 1.0 wt%, preferably, may be included in an amount of 0.3 to 0.8 wt%, and more preferably, may be included in an amount of 0.4 to 0.8 wt%, based on the weight of the total composition.

In the aspect as described above, the emulsifier may be included in an amount of 0.5 to 4.0 wt%, preferably 0.7 to 3.0 wt%, more preferably 1.0 to 2.5 wt%, and most preferably 1.2 to 2.2 wt%, based on the total composition. When the content of the emulsifier is more than 4.0 wt%, water droplets are not formed when the cosmetic composition is applied.

In the aspect described above, the above curing agent may contain a wax. The wax is not limited and may be selected from candelilla wax, carnauba wax, microcrystalline wax, beeswax, ozokerite, polyethylene, and C_30-45Alkyl methyl polysiloxane, ozokerite and natural ozokerite.

The curing agent may be included in an amount of 1 to 10 wt%, preferably 2 to 9 wt%, more preferably 3 to 8 wt%, and most preferably 4 to 5 wt%, based on the total composition. When the content of the curing agent exceeds the above content range, there is a possibility that water droplets are not formed or cracks are generated in the solid dosage form during application.

In the above aspect, the oil may include one or more selected from the group consisting of caprylic/capric triglyceride, phenyl trimethicone, isoeicosane, diisopropyl adipate, hydrogenated polyisobutene, octyllauryl alcohol, dioctyl carbonate, sunflower seed oil, hexyl dodecyl myristyl methyl amino propionate, cetyl hexyl hexanoate, macadamia nut oil, and polydimethylsiloxane, but is not limited thereto.

The oil may be contained in an amount of 3 to 20 wt%, preferably 5 to 18 wt%, more preferably 7 to 16 wt%, and most preferably 10 to 15 wt%, based on the total composition weight.

On the other hand, the organic uv screener may include one or more selected from the group consisting of ethylhexyl methoxycinnamate, ethylhexyl salicylate, hexyl diethylaminohydroxybenzoate, octocrylene, ethylhexyl triazone, polysiloxane-15, bis-ethylhexyloxyphenol methoxyphenyl triazine, and homosalate, but is not limited thereto.

The organic anti-ultraviolet agent may be included in an amount of 3 to 25 wt%, preferably 5 to 22 wt%, and more preferably 10 to 20 wt%, based on the total composition weight. Preferably, ethylhexyl methoxycinnamate may be included up to 7.5 weight percent, ethylhexyl salicylate may be included up to 5.0 weight percent, and homosalate may be included up to 10 weight percent.

In the aspect as described above, the composition may contain 30 to 85 weight percent of the aqueous phase portion. The aqueous phase may preferably comprise 50 to 80 wt%, more preferably 60 to 75 wt%, and most preferably 65 to 70 wt%, based on the total composition. The aqueous phase may further contain one or more of an alcohol and a thickener. The above alcohols may include, for example, polyhydric alcohols such as glycerin, butylene glycol, propylene glycol, sorbitol, or polyethylene glycol, but are not limited thereto. The alcohol may be included in an amount of 1 to 10 wt%, preferably 2 to 8 wt%, more preferably 3 to 7 wt%, and most preferably 4 to 6 wt%, based on the total composition weight.

Also, the thickener may include xanthan gum, but is not limited thereto. The thickener may be included in an amount of 0.01 to 1.0 wt%, preferably 0.1 to 0.5 wt%, based on the weight of the total composition.

In one aspect, the present invention is a method for preparing an ultraviolet screening cosmetic composition of the water droplet solid type, comprising mixing an organic ultraviolet screening agent; emulsifier, oil phase portion; and a step of forming an aqueous phase portion.

The method may include the step of dissolving the ultraviolet inhibitor and the oil phase at a temperature of 70 to 80 ℃ and a stirring speed of 1000 to 2500rpm for 5 to 15 minutes.

The method may further include the step of adding a thickener to the mixture of the alcohol and the purified water, and stirring the mixture at a temperature of 70 to 80 ℃ and a stirring speed of 500 to 2000rpm for 5 to 30 minutes to disperse the mixture.

The method further comprises the step of adding the aqueous phase to the oil phase at a temperature of 70 to 80 ℃, wherein the step of adding may comprise performing a first stirring at 500 to 1500rpm for 5 to 30 minutes and then performing a second stirring at 1500 to 2500rpm for 7 to 10 minutes. The method may further comprise a step of defoaming and filtering the composition at a temperature of 65 to 80 ℃ to allow the composition to flow out.

In the above method, each temperature range, stirring speed and stirring time are optimized in terms of preparation of the water-droplet solid type ultraviolet screening cosmetic composition of the present invention, and if the above conditions are not satisfied, there is a problem that the preparation stability is lowered and water droplets are not formed.

Hereinafter, the structure and effects of the present invention will be described more specifically by referring to examples and test examples. However, these examples and test examples are provided only for the purpose of facilitating understanding of the present invention, and the scope and range of the present invention are not limited to the following examples.

Preparation example 1: preparation of aqueous-droplet solid cosmetic composition comprising organic anti-UV agent

Cosmetic compositions were prepared using the ingredients set forth in table 1 below. The preparation method is as follows.

1. The UV-screening/oil phase is dissolved/dispersed at a temperature of 70 to 80 ℃ (5 to 15 minutes, high speed stirring 1000 to 2500 rpm).

2. The water-soluble thickener C2 is added to the aqueous phase portions C1 and C3 and dispersed therein, and then the mixture is redispersed by raising the temperature to 70 to 80 ℃ (5 to 30 minutes, stirring at 500 to 2000 rpm).

3. The aqueous phase is put into the oil phase, specifically, pre-emulsification is carried out for 5 to 30 minutes at 500 to 1500rpm, and then the main emulsification is carried out for 7 to 10 minutes at 1500 to 2500 rpm. The temperature is kept at 70-80 ℃.

4. Finally, the composition is defoamed and filtered at a temperature of 65 to 80 ℃ to flow out.

TABLE 1

And, comparative example 11 was prepared with reference to korean patent laid-open publication No. 10-1678559. Also, in comparative example 12, 1 weight percent of lauryl PEG-9 dimethiconoethyl dimethicone was used in place of lauryl PEG-8dimethicone, and 1 weight percent of PEG-10 dimethicone was used in place of cetyl PEG/PPG-10/1 dimethicone.

Experimental example 1: evaluation of stability of preparation

The stability evaluation was performed on a plurality of compositions prepared in preparation example 1 by the method described in the following table 2. The results are shown in Table 3 below.

TABLE 2

TABLE 3

As a result, the composition of the present invention was found to have substantially excellent formulation stability at low temperature, normal temperature, body temperature and high temperature, but the content or content ratio of the emulsifier was different from that of the present invention or the formulation was found to be unstable when the inorganic ultraviolet screening agent was included (comparative example 13).

Experimental example 2: confirmation of Water droplet formation force

The water drop formation was measured by measuring the number of water drops which were discharged 10 times by scraping the surface after a 12g aluminum pan was filled with the contents, and the results thereof are shown in table 5. The water droplet forming ability was evaluated according to the criteria described in table 4.

TABLE 4

Very good (very circus)	Form 5 or more (about 6g) water drops
		Good (∘)	Forming water drops of 2 drops or more and less than 4 drops
In general (Delta)	No water drop is formed and water drops are condensed on the surface
		Not good (X)	Form no water, but collapse

TABLE 5

Experimental example 3: confirmation of anti-ultraviolet Effect

The measurement was performed 3 times using an integrating sphere (labsphere) and an ultraviolet transmittance analyzer (UV transmittance analyzer) as instruments for measuring an ultraviolet blocking index In vitro (In vitro), and the average values thereof are shown In the following table 6.

TABLE 6

PFA	PA	Anti-ultraviolet A effect
			2 or more and less than 4	PA+	Is provided with
4 or more and less than 8	PA++	Good effect
			More than 8	PA+++	The effect is very good

The results of the ultraviolet screening effect test of example 1 and comparative examples 1 to 12 are shown in the following table 7.

TABLE 7

On the other hand, when a composition containing an inorganic uv screening agent and having a uv screening effect equivalent to that of example 1 was prepared, it was necessary to contain 16% or more of the inorganic uv screening agent, and when the inorganic uv screening agent was contained, problems such as a moisture separation phenomenon occurred, and it was confirmed that a water droplet formulation was not formed (fig. 3).

Experimental example 4: usage sensing test

The same amounts of the compositions of example 1 and comparative examples 1 to 12 were applied to arms using a plurality of panels as objects, and the spreadability, whether the composition was uniformly applied, the adhesion force and the cooling feeling were tested (5 points: very good, 4 points: good, 3 points: general, 2 points: not good, 1 point: very poor).

TABLE 8

Claims

1. A water-droplet solid type ultraviolet-screening cosmetic composition characterized in that,

the composition comprises:

an organic anti-ultraviolet agent; an oil phase comprising an emulsifier, an oil, and a curing agent; and an aqueous phase portion comprising water,

does not contain inorganic ultraviolet-proof agent;

the composition comprises the following emulsifiers in parts by weight of 1: 1-2: 0.3-1.5 respectively:

cetyl PEG/PPG-10/1 polydimethylsiloxane or lauryl PEG-8 polydimethylsiloxane;

polydimethylsiloxane PEG-10/15 crosspolymer; and sorbitan sesquioleate;

the composition comprises 3-25 weight percent of organic ultraviolet-proof agent and 0.5-2.5 weight percent of emulsifier based on the total composition weight.

2. The water-droplet solid type ultraviolet screening cosmetic composition as set forth in claim 1,

the curing agent comprises a wax, and the curing agent comprises,

said wax comprises a wax selected from candelilla wax, C_30-45Alkyl methyl polysiloxane, ozokerite and natural ozokerite.

3. The water-droplet solid type ultraviolet screening cosmetic composition as set forth in claim 1,

the oil comprises at least one selected from the group consisting of caprylic/capric triglyceride, phenyltrimethicone, isoeicosane, diisopropyl adipate and polydimethylsiloxane.

4. The water-droplet solid type ultraviolet screening cosmetic composition as set forth in claim 1,

the organic anti-ultraviolet agent comprises at least one selected from the group consisting of ethylhexyl methoxycinnamate, ethylhexyl salicylate, and homosalate.

5. The water-drop solid ultraviolet-screening cosmetic composition of claim 1, further comprising 3 to 13% by weight of an oil, 1 to 7% by weight of a solidifying agent and 30 to 70% by weight of an aqueous phase, based on the total weight of the composition.

6. The water-droplet solid type ultraviolet screening cosmetic composition according to claim 1, wherein the aqueous phase further contains at least one of 1 to 10% by weight of an alcohol and 0.01 to 1.0% by weight of a thickener.

7. The ultraviolet-screening cosmetic composition as claimed in claim 6, wherein said alcohol comprises a polyhydric alcohol and said thickener comprises xanthan gum.

8. A method for producing a water-droplet solid type ultraviolet screening cosmetic composition according to any one of claims 1 to 7, which comprises a step of mixing an organic ultraviolet screening agent, an emulsifier, an oil phase part and an aqueous phase part.