KR20210148578A - Emulsion containing zinc oxide for protecting ultraviolet ray, near infrared ray and blue light, and cosmetics composition containing the same - Google Patents

Abstract

The present invention relates to a zinc oxide oil dispersion for blocking ultraviolet rays, near infrared rays, and blue light, and a cosmetic composition comprising the same, and more particularly, to an oil dispersion comprising zinc oxide, wherein the zinc oxide is composed of a first zine oxide having an average particle diameter of 30 to 50 nm and a second zinc oxide having an average particle diameter of 700 to 1,200 nm. The cosmetic composition of the present invention comprises the zinc oxide oil dispersion in an amount of 0.1 to 30 wt% based on the total weight of the cosmetic composition.

Description

Zinc oxide oil dispersion for blocking ultraviolet, near-infrared and blue light, and a cosmetic composition comprising the same

The present invention relates to a zinc oxide oil dispersion for blocking ultraviolet, near infrared and blue light and a cosmetic composition comprising the same, and more particularly, using two zinc oxides with different particle sizes coated with triethoxycaprylylsilane. It relates to a zinc oxide oil dispersion having excellent feeling of use and excellent UV, blue light and infrared blocking effect by preparing an oil dispersion, and a cosmetic composition comprising the same.

The sunlight reaching the earth's surface is largely composed of ultraviolet (6.8%) (wavelength range 100-400 nm), visible light (38.9%) (wavelength range 400-800 nm), and near-infrared (54.3%) (wavelength range 780-1,400 nm). do. It is well known that ultraviolet rays with a short double wavelength and a lot of energy penetrate the epidermis and dermis and cause various skin aging such as erythema and skin cancer.

However, in addition to ultraviolet rays, near-infrared rays corresponding to the wavelength range of 780 nm to 1400 nm in the infrared region also penetrate into the subcutaneous fat layer, which is much deeper than UVA, which reaches the deep dermis, destroying collagen tissue, generating active oxygen, and causing vasodilation. It causes skin aging. When near-infrared rays are exposed to human skin for a short period of time, they can exhibit therapeutic effects such as relieving muscle inflammation, but repeated exposure is involved in the production of collagen-degrading enzymes, causing collagen imbalance and skin aging, and It may also be accompanied by erythema. In addition, due to near-infrared rays penetrating deep into the subcutaneous tissue, active oxygen generated in the process of mitochondria producing energy increases. Oxidative stress, which damages normal cells by increasing the concentration of free radicals, is called oxidative stress. Oxidative stress causes chronic fatigue, hyperlipidemia, arteriosclerosis, heart disease, peripheral vascular disease, allergic dermatitis, cancer, and aging. exacerbate the disease you are suffering from.

In addition, blue light corresponding to a wavelength range of 400 to 495 nm in the visible light region also causes pigmentation and skin aging. Such blue light comes from LED lamps, smartphones, computers, and the like, and since skin exposure to these electronic devices is frequently made in daily life, concerns about pigmentation and skin aging due to blue light are growing. 1 shows the classification of light by wavelength and the wavelength range of blue light.

The blue light induces eye fatigue and disturbs the rhythm of the body, causing sleep disturbance, and as a side effect thereof, many reports have already been published on the effect on the human body, such as fatigue or roughness of the skin. There are many reports about the direct effect of blue light on the skin. It has been reported that it inhibits the production of collagen and elastin by lowering the activation of fibroblasts in the dermal layer, and induces pigmentation by excessive production of melanin in the epidermal layer.

Until now, many studies have been done on ultraviolet rays as the main cause of photoaging, and accordingly, numerous studies have been conducted on organic and inorganic sunscreens to protect the skin from ultraviolet rays. Products developed using these UV-blocking organic and inorganic materials are applied to various products as a numerical value indicating UV-blocking power such as SPF and PA.

However, as described above, not only ultraviolet rays but also near infrared rays and blue light are also one of the main factors of skin aging, so the demand for products for blocking near infrared rays and blue light is increasing.

However, research on materials and products that can block not only ultraviolet rays, but also near infrared rays and blue light are insufficient.

KR 10-1861985 B1 KR 10-1148427 B1 KR 10-2017-0038508 A

Accordingly, an object of the present invention is to provide a zinc oxide oil dispersion capable of blocking both visible light, particularly blue light and near infrared light, as well as ultraviolet light, and a cosmetic composition comprising the same.

Another object of the present invention is to provide a zinc oxide oil dispersion that blocks a wide range of wavelengths and has excellent stability and feel, and a cosmetic composition comprising the same.

The zinc oxide oil dispersion for blocking ultraviolet rays, near infrared rays and blue light of the present invention for achieving the above object, in the oil dispersion containing zinc oxide, the zinc oxide has an average particle diameter of 30 to 50 nm first zinc oxide and It is characterized in that it consists of a second zinc oxide having an average particle diameter of 700 to 1,200 nm.

The first and second zinc oxides are characterized in that they are coated with triethoxycaprylylsilane.

It is characterized in that it further comprises a dispersion medium and a dispersing agent.

The dispersion medium is coco-caprylate / caprate (Coco-Caprylate / Caprate), hydrogenated coconut oil (Hydrogenated Coconut Oil) or a mixture thereof, and the dispersant is polyhydroxystearic acid do it with

0.1 to 50% by weight of the zinc oxide, 1 to 5% by weight of the dispersant, and the remainder of the dispersion medium, wherein the zinc oxide is characterized in that it contains the first zinc oxide and the second zinc oxide in a ratio of 1:1 to 6 by weight .

And the cosmetic composition of the present invention is characterized in that it contains the zinc oxide oil dispersion in an amount of 0.1 to 30% by weight based on the total weight of the cosmetic composition.

According to the zinc oxide oil dispersion for blocking ultraviolet, near-infrared and blue light of the present invention and the cosmetic composition comprising the same, it blocks not only ultraviolet but also light in the visible and near-infrared regions including blue light, thereby helping to prevent skin aging. There is this. In addition, there is an advantage that the feeling of use is excellent and there is little skin irritation.

1 is a view showing the classification of light by wavelength and the wavelength range of blue light.
2 is a graph showing the results of Test Example 1 according to the present invention.
3 is a graph showing the results of Test Example 2 according to the present invention.
4 is a photograph showing the results of Test Example 3 according to the present invention.

Hereinafter, the present invention will be described in detail.

The biggest feature of the oil dispersion according to the present invention is that it has excellent blocking effect against not only ultraviolet light, but also blue light and near infrared light, and has excellent usability and stability.

For this purpose, the zinc oxide oil dispersion for blocking ultraviolet, near-infrared and blue light of the present invention, in the oil dispersion containing zinc oxide, the zinc oxide is a first zinc oxide having an average particle diameter of 30-50 nm and an average particle diameter of 700 It is characterized in that it consists of a second zinc oxide of ~1,200 nm.

That is, an oil dispersion of zinc oxide is commonly used for blocking UV rays, but the average particle diameter of the zinc oxide used is usually about 10 to 300 nm, and only one type of particle having the same size is used. However, when an oil dispersion is formed using only zinc oxide having an average particle diameter of about 10 to 300 nm, the UV blocking effect is excellent, but blocking of near infrared rays and blue light is difficult.

Therefore, in the present invention, by using together the first zinc oxide having an average particle diameter of 30-50 nm and the second zinc oxide having an average particle diameter of 700 to 1,200 nm in the composition of the oil dispersion, not only ultraviolet rays, but also near infrared rays and blue light are also efficiently it will block The reason for limiting the particle size of the zinc oxide to the above range is that when particles outside this range are used, the blocking rate of near infrared rays and blue light is significantly lowered.

At this time, the zinc oxide, that is, the first zinc oxide and the second zinc oxide are both preferably in a state coated with triethoxycaprylylsilane, through the coating of the triethoxycaprylylsilane. This is because the blocking rate of near-infrared light and blue light can be increased, and the feeling of use can also be improved.

In the present invention, the coating method of triethoxycaprylyl silane is not limited, any of the previously published methods are applicable, and it is also possible to purchase and use triethoxycaprylylsilane-coated zinc oxide. It is possible. Illustratively, in the method of coating the triethoxycaprylyl silane, 0.1 to 4% by weight of triethoxycaprylyl silane is added to 96 to 99.9% by weight of the zinc oxide, and 1,000 to 2,500 rpm It can be prepared by stirring at a speed of 60 to 120 minutes. In addition, it can be prepared by stirring while raising the temperature to about 60 ~ 130 ℃ by adding steam during stirring.

And the zinc oxide preferably contains the first zinc oxide and the second zinc oxide in a weight ratio of 1:1 to 6, because the blocking effect of ultraviolet rays, near infrared rays and blue light in this range is the most excellent.

On the other hand, the oil dispersion of the present invention further includes a dispersion medium and a dispersing agent. That is, the zinc oxide is in a dispersed state in the dispersion medium and the dispersant.

In this case, as the dispersion medium, coco-caprylate/caprate, hydrogenated coconut oil, or a mixture thereof is used, and as the dispersing agent, polyhydroxystearic acid It is preferable to use (Polyhydroxystearic Acid), which is more uniformly dispersed under the conditions of the dispersing agent and dispersion medium, so that a stable oil dispersion can be prepared. to be.

And in the present invention, the mixing ratio between the zinc oxide, the dispersing agent and the dispersion medium is preferably 0.1 to 50% by weight of the zinc oxide, 1 to 5% by weight of the dispersant and the remainder of the dispersion medium, but is not necessarily limited thereto.

The above-mentioned oil dispersion of zinc oxide has the advantage of excellent feeling of use, excellent stability, and excellent effect of blocking not only ultraviolet rays, but also near infrared rays and blue light, which were difficult to block conventionally.

In addition, the above-described oil dispersion of zinc oxide may be included in an amount of 0.1 to 30% by weight based on 100% of the total weight of the cosmetic composition, which is in consideration of the formulation, application, and the like of the cosmetic composition.

At this time, the cosmetic composition may be formulated in any one of tone-up cream, sun cream, makeup primer, makeup base, BB cream, CC cream, foundation, air cushion, fact, concealer, and other known forms. Of course, it can be irritating.

Hereinafter, the present invention will be described in detail through specific examples.

(Example 1): Preparation of zinc oxide oil dispersion

Coco-Caprylate/Caprate as a dispersion medium, Hydrogenated Coconut Oil as a dispersant, and Polyhydroxystearic Acid as a dispersant as a dispersant were dissolved at 60° C. for 12 hours. .

Next, two zinc oxides having different average particle diameters were added to the mixed solution of the dispersant and the dispersion medium at 25 to 30° C., and stirred for 30 minutes with an azimuth mixer to first disperse. And an oil dispersion was prepared by dispersing the dispersion by treating and dispersing the dispersion at 35° C. to 40° C. with a 0.5 to 0.3 mm bead mill at a speed of 1,800 rmp.

At this time, the usage amount of each component was as shown in Table 1 below.

Composition ratio of Example 1 INCI Name weight% Zinc Oxide & Triethoxycaprylysilane
(average particle diameter 700~1200nm) 40 Zinc Oxide & Triethoxycaprylysilane
(average particle size 30~50nm) 10 Polyhydroxystearic Acid 5 Hydrogenated Coconut Oil 20 Coco-Caprylate/Caprate 25 total 100

The Zinc Oxide & Triethoxycaprylysilane (average particle diameter 700~1200nm) is KS-1 TE of Hanil Chemical Industry Co., Ltd., and Zinc Oxide & Triethoxycaprylysilane (average particle diameter 30~50nm) is NZ-TE 30 of Hanil Chemical Industry Co., Ltd. was purchased and used.

(Comparative Example 1): Preparation of zinc oxide oil dispersion

An oil dispersion was prepared in the same manner as in Example 1, with the composition and amount used in Table 2 below.

Composition ratio of Comparative Example 1 INCI Name weight% Zinc Oxide & Hydrogen Dimethicone
(average particle size 30~300nm) 50 Cyclopentasiloxane 42 PEG-10 Dimethicone 8 total 100

(Test Example 1): Evaluation of UV protection ability using SPF-290AS (in-vitro)

UV blocking ability was evaluated for Example 1 and Comparative Example 1. The evaluation of the UV blocking ability was an in-vitro experiment using the SPF Analyzer. After stabilizing the device for about 20 minutes before starting the measurement, the amount of each sample that can be applied to the test plate at 0.0325 g Accurately weighed and applied evenly on the top surface of the plate, rubbed with a finger with a rubber thimble for uniform application, dried for 20 minutes, and then placed in the SPF Analyzer to measure the index. The results are shown in Figure 2 and Table 3.

UV protection value of Example 1 and Comparative Example 1 UV protection level SPF value PA value(++++) Example 1 53.64 18 Comparative Example 1 50.11 16

As can be seen in the attached FIG. 2, Example 1 was confirmed to be able to block up to a wider wavelength band (370 nm) than Comparative Example 1, and as shown in Table 3 below, the SPF value of Example 1 was 53.64, Comparative Example 1 was higher than 50.11, and the PA value was PA++++ in both Example 1 and Comparative Example 1, but the PA values were 18 and 16, respectively, confirming that Example 1 was about 1.2 times higher than Comparative Example 1. .

(Test Example 2): Evaluation of visible light blocking ability using a spectrocolorimeter

In order to evaluate the visible light blocking ability of Example 1 and Comparative Example 1, reflectance was measured with a spectrocolorimeter. The measured wavelength band of the visible ray region is 360~740 nm, and the higher the reflectance in this region, the higher the visible ray blocking ability. The evaluation of the visible light blocking ability was commissioned by the Korea Polymer Testing Laboratory, an internationally accredited testing institution, and the results are shown in FIG. 3 and Table 4 below.

Reflectance in the visible light region of Example 1 and Comparative Example 1 division Reflectance (at 550) % Reflectance (at 740 nm) % Example 1 80.28 84.06 Comparative Example 1 77.29 76.49 Measuring device: CM-5 (KONICA MINOLTA, Japan)
Light source: Xenon lamp (D65)
Viewing angle: 10°
Wavelength interval: 10nm
Wavelength range: 360nm~740nm

3 and Table 4, the reflectance of Example 1 of the present invention was all higher than that of Comparative Example 1 in the wavelength region of 360 nm to 740 nm, and the visible light blocking ability was about 3 to 8% higher than that of Comparative Example 1. was able to confirm

(Test Example 3): Evaluation of infrared blocking ability using a thermal imaging camera

The infrared blocking ability of Example 1 and Comparative Example 1 was evaluated. The infrared blocking ability was measured by applying an appropriate amount (2mg/cm2) of each sample to the skin of the upper arm of the arm, irradiating it for 10 minutes at a distance of 60cm using an infrared lamp (125W), and using a thermal imaging camera (FOTRIC226). The skin temperature was measured in a non-contact manner. And the result is shown in FIG.

As can be seen in FIG. 4 , it was confirmed that Example 1 increased the temperature of the back of the hand by 1.5°C, and Comparative Example 1 increased it by 4.7°C. In other words, it was confirmed that Example 1 can be said to lower the heat of 3.2 ℃ compared to Comparative Example 1.

(Test Example 4): Check temperature stability

The temperature stability of Example 1 and Comparative Example 1 was confirmed. Confirmation of the temperature stability, after storing each oil dispersion under the conditions of 4 ℃, RT (room temperature), 50 ℃, CT (Cycling Test: -4 ~ 50 ℃, once a day), the stability after 90 days was visually measured. And the results are shown in Table 5 below.

Temperature stability test results of Example 1 and Comparative Example 1 Temperature 7 days 30 days 90 days Example 1 Comparative Example 1 Example 1 Comparative Example 1 Example 1 Comparative Example 1 room temperature (RT) ◎ △ ◎ △ ◎ △ 4℃ ◎ △ ◎ △ ◎ × CT ◎ △ ◎ × ◎ × 50℃ ◎ × ◎ × △ × ◎: not separated, △: slightly separated, ×: separated

As can be seen from Table 5, it was confirmed that Example 1 was more stable than Comparative Example 1 without separation for 30 days even at a high temperature of 50°C.

(Test Example 5): skin irritation evaluation

In order to examine the skin irritation of Example 1 and Comparative Example 1, a human patch test was performed. In the human patch test, a predetermined amount (about 40 μg) of propylene glycol and purified water were applied to the upper arm of 30 adults with healthy skin as Example 1 and Comparative Example 1 and as a control for 24 hours, and then removed and skin irritation was measured. After 24 hours and 48 hours, the skin reaction was again investigated. The criteria for skin irritation and the formula for calculating the degree of irritation are as follows, and the results are shown in Table 6 below.

Judgment Criteria - : No erythema or unusual phenomenon

+- : Slightly redder than the surrounding area

+ : Significantly redder than the surrounding area

++ : Redness and swelling more severe than the surrounding area

(Stimulation degree calculation formula)

Example 1 and Comparative Example 1 skin irritation evaluation test results sample number of subjects Investigation period Judgment result
Stimulus (%) ++ + + - - Example 1 30 people immediately after removal 0 people 0 people 1 person 29 people 3.33 30 people after 24 hours 0 people 0 people 2 people 28 people 6.67 30 people after 48 hours 0 people 0 people 2 people 28 people 6.67 Comparative Example 1 30 people immediately after removal 0 people 1 person 3 people 26 people 16.13 30 people after 24 hours 0 people 1 person 4 people 25 people 19.35 30 people after 48 hours 0 people 1 person 4 people 25 people 19.35 propylene glycol 30 people immediately after removal 0 people 2 people 5 people 23 people 28.13 30 people after 24 hours 0 people 2 people 5 people 23 people 28.13 30 people after 48 hours 0 people 2 people 5 people 23 people 28.13 Purified water 30 people immediately after removal 0 people 0 people 1 person 29 people 3.33 30 people after 24 hours 0 people 0 people 0 people 30 people 0.00 30 people after 48 hours 0 people 0 people 0 people 30 people 0.00

As can be seen in Table 6, Example 1 was found to have little skin irritation.

Hereinafter, formulation examples according to the present invention will be described.

However, the present invention is not limited to these formulations, and it is natural that the formulation may be formulated in a variety of known formulations.

(Formulation Example 1): Tone-up cream composition that blocks ultraviolet rays, visible rays (blue light), and near infrared rays

According to the composition of Table 7 below, ultraviolet, visible and near-infrared blocking tone-up creams were prepared by a conventional method in the field to which this technology belongs.

Tone-up cream composition Ingredient name (INCI name) weight% Oil dispersion of Example 1 20.00 Cetearyl Alcohol 1.50 Glyceryl Stearate (and) PEG-100 Stearate 1.00 Sorbitan Olivate 0.50 Ethylhexyl Pelargonate 3.00 Caprylic/Capric Triglycerides 3.00 Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer 2.00 Disodium EDTA 0.02 Allantoin 0.10 Panthenol 0.20 Butylene Glycol 3.00 Glycerin 3.00 1,2-Hexanediol (and) Caprylhydoxamic Acid (and) 1,3-Butylene Glycol 1.00 Sodium Acrylate/ATBS*copolymer & C15-C19 Alkane & C10-C16 Alkyl glucoside 2.00 Perfume 0.02 Water To 100

(Formulation Example 2): Composition of sunscreen that blocks ultraviolet rays, visible rays (blue light), and near infrared rays

According to the composition of Table 8 below, ultraviolet, visible, and near-infrared blocking sunscreens were prepared by a conventional method in the field to which this technology belongs.

sun cream composition Ingredient name (INCI name) weight% Oil dispersion of Example 1 20.00 Caprylic/Capric Triglycerides 1.50 Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine 2.50 Ethylhexyl Methoxycinnamate 7.50 Octocrylene 3.00 Homosalate 3.00 Glyceryl Stearate (and) PEG-100 Stearate 1.50 Polysorbate 60 3.00 Sorbitan Sesquioleate 1.50 Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer 1.50 Disodium EDTA 0.02 Dimethicone 1.00 Butylene Glycol 2.00 Glycerin 1.50 1,2-Hexanediol (and) Caprylhydoxamic Acid (and) 1,3-Butylene Glycol 1.00 Polyacrylate Crosspolymer-6 2.00 Perfume 0.02 Water To 100

(Formulation Example 3): Sun gel composition that blocks ultraviolet rays, visible rays (blue light), and near infrared rays

According to the composition of Table 9 below, ultraviolet, visible, and near-infrared blocking sun gels were prepared by a conventional method in the field to which this technology belongs.

sun gel composition Ingredient name (INCI name) weight% Oil dispersion of Example 1 20.00 Caprylic/Capric Triglycerides 1.50 Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine 2.50 Ethylhexyl Methoxycinnamate 7.50 Ethylhexyl Salicylate 5.00 Homosalate 3.00 Glyceryl Stearate 1.00 Sorbitan Sesquioleate 1.50 Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer 1.50 Disodium EDTA 0.02 Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer (2%) 15.00 Butylene Glycol 2.00 Ethanol 5.00 1,2-Hexanediol (and) Caprylhydoxamic Acid (and) 1,3-Butylene Glycol 1.00 Perfume 0.02 Water To 100

(Formulation Example 4): BB cream composition that blocks ultraviolet rays, visible rays (blue light), and near infrared rays

According to the composition of Table 10 below, UV, visible and near-infrared blocking BB creams were prepared by a conventional method in the field to which this technology belongs.

BB Cream Composition Ingredient name (INCI name) weight% Oil dispersion of Example 1 15.00 C12-15 Alkyl Benzoate 1.50 Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine 2.00 Ethylhexyl Methoxycinnamate 7.50 Ethylhexyl Salicylate 5.00 Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone 2.00 Polysorbate 60 0.50 Glyceryl Stearate 1.00 Sorbitan Stearate 1.00 Cyclopentasiloxane 10.00 Ethylhexyl Pelargonate 2.00 Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer 1.50 Disodium EDTA 0.02 Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer (2%) 15.0 Butylene Glycol 2.00 Cyclopentasiloxane (and) Disteardimonium Hectorite (and) Triethyl Citrate 2.00 1,2-Hexanediol (and) Caprylhydoxamic Acid (and) 1,3-Butylene Glycol 1.00 Iron Oxides (CI 77491) (and) Triethoxycarprylylsilane 0.18 Iron Oxides (CI 77492) (and) Triethoxycarprylylsilane 0.35 Iron Oxides (CI 77499) (and) Triethoxycarprylylsilane 0.03 Perfume 0.02 Water To 100

(Formulation Example 5): Air cushion composition that blocks ultraviolet rays, visible rays (blue light), and near infrared rays

According to the composition of Table 11 below, ultraviolet, visible and near-infrared blocking air cushions were prepared in a conventional manner in the field to which this technology belongs.

Air cushion composition Ingredient name (INCI name) weight% Oil dispersion of Example 1 13.00 Raphanus Sativus (Radish) Seed Extract 3.00 Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine 2.00 Ethylhexyl Methoxycinnamate 7.50 Ethylhexyl Salicylate 5.00 Octocrylene 2.00 Bis-(Glyceryl/Lauryl) Glyceryl Lauryl Dimethicone (and)
Caprylice/Capric Triglyceride 3.50 Glyceryl Stearate 2.00 Sorbitan Stearate 1.00 Isododecane 2.00 Ethylhexyl Pelargonate 5.50 Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer 4.00 Disodium EDTA 0.02 Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer (2%) 15.0 Butylene Glycol 2.00 Cyclopentasiloxane (and) Disteardimonium Hectorite (and)
Triethyl Citrate 1.50 1,2-Hexanediol (and) Caprylhydoxamic Acid (and) 1,3-Butylene Glycol 1.00 Sodium Chloride 1.00 Iron Oxides (CI 77491) (and) Triethoxycarprylylsilane 0.10 Iron Oxides (CI 77492) (and) Triethoxycarprylylsilane 0.30 Iron Oxides (CI 77499) (and) Triethoxycarprylylsilane 0.05 Perfume 0.02 Water To 100

(Formulation Example 6): Composition of a camouflage cream that blocks ultraviolet rays, visible rays (blue light), and near infrared rays

According to the composition of Table 12 below, ultraviolet, visible and near-infrared blocking camouflage creams were prepared by a conventional method in the field to which this technology belongs.

Camouflage cream composition Ingredient name (INCI name) weight% Oil dispersion of Example 1 25 Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine 2.00 Ethylhexyl Methoxycinnamate 7.50 Ethylhexyl Salicylate 5.00 Bis-(Glyceryl/Lauryl) Glyceryl Lauryl Dimethicone (and)
Caprylice/Capric Triglyceride 3.50 Glyceryl Stearate 2.00 Sorbitan Stearate 1.00 Ethylhexyl Pelargonate 5.50 Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer 2.00 Disodium EDTA 0.02 Butylene Glycol 2.00 Cyclopentasiloxane (and) Disteardimonium Hectorite (and)
Triethyl Citrate 1.50 1,2-Hexanediol (and) Caprylhydoxamic Acid (and) 1,3-Butylene Glycol 1.00 Iron Oxides (CI 77499) (and) Triethoxycarprylylsilane 1.00 Perfume 0.02 Water To 100

As described above in detail a specific part of the present invention, for those of ordinary skill in the art, this specific description is only a preferred embodiment, and it is clear that the scope of the present invention is not limited thereto.

Accordingly, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

Claims (6)

In the oil dispersion containing zinc oxide,
The zinc oxide is a zinc oxide oil dispersion for blocking ultraviolet, near-infrared and blue light, characterized in that it consists of a first zinc oxide having an average particle diameter of 30 to 50 nm and a second zinc oxide having an average particle diameter of 700 to 1,200 nm.
According to claim 1,
The first and second zinc oxide is a zinc oxide oil dispersion for blocking ultraviolet, near infrared and blue light, characterized in that it is coated with triethoxycaprylylsilane.
3. The method of claim 2,
A zinc oxide oil dispersion for blocking ultraviolet, near-infrared and blue light, characterized in that it further comprises a dispersion medium and a dispersing agent.
4. The method of claim 3,
The dispersion medium is coco-caprylate / caprate (Coco-Caprylate / Caprate), hydrogenated coconut oil (Hydrogenated Coconut Oil) or a mixture thereof,
The dispersant is a zinc oxide oil dispersion for blocking ultraviolet, near-infrared and blue light, characterized in that it is polyhydroxystearic acid.
4. The method of claim 3,
Contains 0.1 to 50% by weight of the zinc oxide, 1 to 5% by weight of a dispersant, and the remainder of the dispersion medium,
The zinc oxide is a zinc oxide oil dispersion for blocking ultraviolet, near infrared and blue light, characterized in that it comprises a first zinc oxide and a second zinc oxide in a weight ratio of 1:1 to 6.
A cosmetic composition comprising 0.1 to 30% by weight of the zinc oxide oil dispersion of any one of claims 1 to 5 based on the total weight of the cosmetic composition.

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