KR101871062B1 - Cosmetic composition having low viscosity for blocking UV, comprising an inorganic UV blocking agent - Google Patents

Abstract

The present invention relates to a cosmetic composition for underwater type (O / W) ultraviolet ray shielding comprising an inorganic UV-blocking agent and cetear-6 olivate. According to the present invention, it is possible to provide an ultraviolet ray blocking composition having a low viscosity which is excellent in feeling and can be emulsified by increasing the emulsification degree of an inorganic ultraviolet screening agent by containing cetear-6 olivate.

Description

[0001] The present invention relates to a cosmetic composition having a low viscosity for blocking ultraviolet rays containing an inorganic UV blocking agent,

The present invention relates to a cosmetic composition for blocking ultraviolet rays having a low viscosity containing an inorganic ultraviolet screening agent.

Recently, due to the increase of the amount of ultraviolet rays reaching the surface due to the abnormality of the ozone layer caused by environmental pollution, damage to the human body due to ultraviolet rays such as aging, skin wrinkle formation, mutagenesis and cancer induction is increasing. Ultraviolet rays reaching the earth surface through the ozone layer penetrate into the epidermis of the skin, causing erythema, freckles and swelling, permeating the skin's dermis, promoting skin cancer, wrinkles and melanin formation, and causing skin aging and skin irritation It is known. Such an ultraviolet screening agent is an organic ultraviolet screening agent which absorbs and blocks UV, and an inorganic ultraviolet screening agent such as titanium dioxide and zinc oxide, which shields and blocks UV.

In the case of conventional sunscreen agents, a majority of the products use a combination of an organic sunscreen and an inorganic sunscreen. However, there is a concern about skin irritation in the case of organic sunscreen agents. In the case of sensitive skin or infants, a product using only an inorganic sunscreen agent, which is not absorbed by the skin and is scattered, is preferred. When an inorganic sunscreen agent is used in an ultraviolet screening product, a hydrophobic coating is used for photostabilization and improvement of dispersibility. Accordingly, when there is a sufficient dispersant and oil in the trauma of the water-in-oil type ultraviolet screening agent, there is no serious problem in dispersion and manufacture. UV water-blocking agents in water have a disadvantage of being difficult to cleanse instead of having a high sustained power. Thus, attempts have been made to implement an underwater sunscreen. However, when dispersing the inorganic sunscreen agent in the inner phase oil, it is possible to provide stable and excellent feeling due to the low amount of oil component unlike the water-based type sunscreen agent and low HLB (Hydrophilic Liphophillic Balance) of the surfactant generally used as the dispersant It is difficult to realize an underwater type sunscreen having a low viscosity.

It is an object of the present invention to provide a cosmetic composition for UV-shielding containing an inorganic UV-blocking agent having a low viscosity for an excellent feeling of use and excellent cleansing.

The present invention provides a cosmetic composition for underwater type (O / W) ultraviolet shielding comprising an inorganic UV-blocking agent and cetear-6 olivate.

The cosmetic composition for underwater type (O / W) ultraviolet screening of the present invention may have a low viscosity to such an extent as to achieve the desired dispersibility in order to increase the content of the internal phase and effectively transmit the effective ingredient. Specifically, it may have a viscosity of 5000 cps or less, preferably 3000 cps or less.

To this end, the composition of the present invention comprises an inorganic UV-blocking agent, an oil, and Ceteralace-6 olivate as an oil component, and may include a polyol or a polyol derivative as an aqueous phase component.

The inorganic ultraviolet screening agent may be one containing titanium dioxide, zinc oxide, or a mixture thereof, which is used as a functional raw material for exhibiting ultraviolet shielding ability. The inorganic sunscreen agent has a size of 10 to 90 nm and is used in an amount of 5 to 25% by weight based on the total weight of the composition. When the amount is less than 5% by weight, ultraviolet shielding ability may be insufficient. When the amount is more than 25% by weight, the water-in-oil type ultraviolet ray blocking agent is not realized or dispersion of the dispersion liquid becomes difficult to control.

The composition of the present invention may further comprise at least one oil selected from vegetable oils, mineral oils, silicone oils and synthetic oils as oily components. More specifically, the present invention relates to a cosmetic composition containing at least one compound selected from the group consisting of mineral oil, cyclomethicone, squalane, octyldodecyl myristate, olive oil, Vitiviniferase seed oil, macadamia nut oil, glyceryl octanoate, castor oil, Butyloctyl salicylate, dimethicone, cyclopentasiloxane, sunflower seed oil and the like, for example, as described above.

The oil may be included in an amount of 5 to 40% by weight, preferably 10 to 30% by weight based on the total weight of the composition. If the content of the oil is less than 5% by weight, the inorganic ultraviolet screening agent absorbs the oil and the ultraviolet screening agent is not able to be produced. Also, the feeling of moisturizing and emollient feeling is reduced and usability is poor. When the oil content is more than 40% by weight, The stability may be lowered or the viscosity may be increased due to the internal shock.

The present invention may include cetear-6 olivate as an emulsifier. Ceteareth-6 olivate is a natural emulsifier extracted from olive oil and has the best emulsifying power among low-viscosity emulsifiers.

In the present invention, cetear-6-olivate may be contained in an amount of 1 to 10% by weight, preferably 2 to 7% by weight based on the total weight of the composition. If the content is less than 1% by weight, emulsification may not be properly carried out, the water phase may become a water phase (W / O) or the inorganic ultraviolet screening agents may cohere with each other, The feeling may be hindered.

The composition of the present invention may further comprise a polyol or a polyol derivative as an aqueous phase component.

The polyol or polyol derivative is an aqueous phase component and may be any suitable for preparing low viscosity emulsions, for example, glycerin, monohydric or dihydric alcohols, or a mixture thereof. Specifically, the polyol or polyol derivative contained in the composition according to the present invention may be, for example, glycerin, butylene glycol, dipropylene glycol, propylene glycol, hexanediol, propanediol, But is not limited thereto.

The polyol or polyol derivative may be contained in an amount of 0.5 to 30% by weight, preferably 1 to 15% by weight based on the total weight of the composition. If the content of the polyol or the polyol derivative is less than 0.5% by weight, the effect may be insignificant. If the content is more than 30% by weight, the stability of the formulation may be impaired.

In order to control the viscosity or hardness of the water phase, 0.001 to 3% by weight of one or more kinds of thickening agents such as carbomer, xanthan gum, bentonite, magnesium aluminum silicate, cellulose gum, dextrin palmitate and the like may be further added.

Preferably, xanthan gum can be added. Xanthomonas campestris, a pathogenic black pathogenic bacterium, is obtained by purifying and drying a fermented polysaccharide which oxidizes glucose and accumulates outside the cells. The powder is a black, creamy white or white, It does not dissolve in ethanol and ether, and because it has a high viscosity, it is used as a suspending agent and stabilizer in flour and food. It is also used as an emulsifying agent.

The composition of the present invention maintains the lotion or gel solid state because of the increased resistance to acids due to the presence of xanthan gum. The addition of glycerin to the lotion or composition further enhances this effect. Therefore, in the present invention, the raw material component can remain for a long period of time by containing xanthan gum, xanthan gum and glycerin.

One preferred embodiment of the present invention is an oily component comprising an inorganic sunscreen agent, an oil and cetear-6 olivate; And an aqueous component containing a polyol or a polyol derivative. The present invention also provides a cosmetic composition for underwater type (O / W) ultraviolet screening.

In addition, the composition of the present invention may further contain additives such as a dispersant, an antioxidant, a preservative, a colorant, a pH adjuster, a moisturizer, and a lubricant, if necessary.

In addition, the composition of the present invention further comprises a substance capable of supplementally providing essential nutrients to the skin, and may preferably contain adjuvants including, but not limited to, natural, cosmetic, or botanical extracts .

The composition of the present invention is not particularly limited in its formulation, but can be widely applied to medicines such as lotions, ointments, gels, creams, patches or sprays, and quasi drugs.

According to the present invention, by containing cetear-6 olivate, a formulation containing a large amount of an inorganic UV-blocking agent can be provided with a low viscosity and a low-viscosity water-based UV blocking composition while enhancing emulsion stability. Since the composition of the present invention has little toxicity and side effects, it can be safely used. In addition, the composition of the present invention is excellent in feeling of use and easy to cleanse, so that it can be safely used for fragile skin.

Hereinafter, an experimental example (embodiment) of the present invention will be exemplified. The following experimental examples are provided to illustrate the present invention only, and the technical scope of the present invention is not limited thereto.

Example 1

Each component except for xanthan gum in part A was stirred and dispersed with a disper and then mixed with xanthan gum to sufficiently disperse the mixture and heated to 70 to 75 ° C to prepare an aqueous phase.

Then, all components of the part B were weighed and mixed at the composition ratios shown in the following Table 1, and the mixture was heated to 70 to 75 DEG C and sufficiently dispersed to prepare an oil phase.

The oil phase was added to the heated aqueous phase, and the mixture was stirred at 3000 rpm for 15 minutes using a homo-mixer to prepare an underwater type composition.

Comparative Example  1 to 4

An underwater type composition was prepared in the same manner as in Example 1 at the composition ratios shown in Table 1 below.

part Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 A Purified water 51.3 51.3 51.3 51.3 51.3 Xanthan gum 0.2 0.2 0.2 0.2 0.2 glycerin 2 2 2 2 2 Propanediol 5 5 5 5 5 B Titanium dioxide, cyclopentasiloxane, hexyl laurate, phage-10 dimethicone, methicone, alumina 15 15 15 15 15 Zinc oxide, dimethicone / methicone polymer, cyclopentasiloxane, phage-10 dimethicone 15 15 15 15 15 Diphenylsiloxy phenyl trimecicone 5 5 5 5 5 Butyleneglycol dicaprylate / dicaprate 5 5 5 5 5 Cetearyl-6 olivate 3 - - - - Polysorbate 20 - 3 - - - Polysorbate 60 - - 3 - - FAGE-40 stearate - - - 3 - Piggy-11 Methyl Ether Dimethicone - - - - 3

Experimental Example 1: Confirmation of stability over time

The compositions prepared in Example 1 and Comparative Examples 1 to 4 were subjected to the aging stability test, and the results are shown in Table 2 below.

division Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 45 ° C stability Separation after 7 days Separation after 7 days Separation after 1 day Separation after 7 days 25 ℃ stability Separation after 14 days Separation after 14 days Separation after 2 days Separation after 14 days 0 ℃ stability stability stability Separation after 2 days stability -15 ℃ stability Separation after 7 days Separation after 7 days Separation after 1 day Separation after 7 days 1st-order viscosity (cps) 1500 4000 4000 8000 5000

In the case of Example 1, it was stable for one month or more at all ages, and the viscosity at day 1 was very low as 1500 cps. On the other hand, in the compositions of Comparative Examples 1 to 4 using other emulsifiers, separation of the emulsion was confirmed over time after a certain time. This is because the low HLB of the phage-10 dimethicone used as a dispersant of TiO2 and ZnO caused poor emulsification due to poor emulsification stability.

Experimental Example  2: Cleansing power  evaluation

The composition prepared in Example 1 and the UV-blocking agent of existing water-type were subjected to a cleansing force evaluation time point, and the results are shown in Table 3 below.

The photographs shown in the above Table 3 are the results of measurement with a UV camera having a wavelength of 400 nm, and the places where the products are applied are shown black, so that the cleaning state can be confirmed through color.

As shown in Table 3, it was confirmed that the composition of Example 1 was cleansed even when washed with water alone, unlike the conventional UV-blocking agents. In the case of using a cleansing foam, I could confirm.

Claims (5)

(O / W) ultraviolet screening composition comprising an inorganic UV-blocking agent and cetear-6 olivate. The method according to claim 1,
Wherein the inorganic ultraviolet screening agent comprises titanium dioxide, zinc oxide, or a mixture thereof. The method according to claim 1,
Wherein the inorganic ultraviolet screening agent is contained in an amount of 5 to 25% by weight based on the total weight of the composition. The method according to claim 1,
Wherein the cetear-6 olivate is contained in an amount of 1 to 10% by weight based on the total weight of the composition. The method according to claim 1,
Wherein the composition has a viscosity of 5000 cps or less.