KR102408582B1 - Sunscreen cosmetic composition - Google Patents

Abstract

The cosmetic composition for UV protection according to the present invention can improve UV protection by including at least one natural ingredient selected from the group consisting of seaweed extract, which exhibits excellent UV protection, green tea extract, cheongho extract, and neem leaf extract, which exhibits anti-inflammatory effect. And it is possible to provide a cosmetic composition for sunscreen that exhibits skin improvement effects such as excellent stability without phase separation, excellent spreadability and improved feeling of use.

Description

Cosmetic composition for sunscreen {Sunscreen cosmetic composition}

The present invention relates to a cosmetic composition for sunscreen comprising seaweed extract and natural ingredients.

Ultraviolet light has a wavelength shorter than that of visible light, and has a wavelength range of 10 nm to 400 nm, which is invisible to the human eye. Although the permeability is lower than that of general X-rays or gamma rays, but the energy is higher than that of visible or infrared rays, it causes sunburn, pigmentation, and photoaging of human skin. do.

Ultraviolet rays are classified into short-wave ultraviolet (UVC; 200-280 nm), medium-wave ultraviolet (UVB; 290-300 nm), and long-wave ultraviolet (UVA; 320-400 nm) according to their wavelength. Most of it is absorbed by the ozone layer and is lost without reaching the surface. Medium-wave UV rays penetrate to the basal layer of the epidermis and the upper dermis, causing sunburns such as erythema and edema, and pigmentation such as freckles, leading to skin cancer. Long-wave ultraviolet rays are known as aging rays that cause photoaging, such as reducing the elasticity of the skin and promoting wrinkle formation by reaching the dermis layer of the skin with the longest wavelength among ultraviolet rays. As such, the need for a sunscreen to protect the skin from UV rays that cause various skin damage has been recognized for a long time, and as a result, various types of UV blocking products have been released.

Conventional sunscreens are divided into organic sunscreens and inorganic sunscreens according to the mechanism of protecting the skin from ultraviolet rays. Chemical blockers that absorb ultraviolet light and convert it into heat through a chemical reaction are organic sunscreens (ultraviolet absorbers). methane, bis-ethylhexyloxyphenol methoxyphenyltriazine and diethylaminohydroxybenzoylhexylbenzoate. These organic sunscreens (chemical blockers) are absorbed into the skin and act, so there is a disadvantage of causing skin irritation and skin toxicity. On the other hand, physical blockers that block UV rays from penetrating into the skin by reflecting and scattering UV rays are classified as inorganic UV blocking agents (ultraviolet scattering agents), and the types include titanium dioxide and zinc oxide. Inorganic sunscreens (physical sunscreens) are difficult to disperse and dissolve in the formulation, so they have the disadvantages of a white turbidity that turns white when applied to the skin and poor feeling of use. In order to overcome the shortcomings of these sunscreens, efforts have been made to find natural sunscreens with little skin irritation and side effects.

Most of the UV-blocking materials isolated from natural products are UV-absorbing materials, which are less irritating and contain pharmacological effects such as anti-inflammatory, astringent, and antibacterial, and research on this has been continued. In contrast, it has been known that an extract of Porphyra Umbilicalis that absorbs a wavelength of a long-wave ultraviolet region is used as a sunscreen and exhibits an excellent ultraviolet-blocking effect (Patent Document 1).

In addition, focusing on the boosting role of a substance having an anti-inflammatory effect to increase the effect of a sunscreen, green tea extract, cheongho extract and neem leaf extract, which are natural ingredients with excellent anti-inflammatory effect, were applied together with laver extract. It was found that the UV blocking effect was increased compared to

Accordingly, the present inventors have studied to solve the problems of conventional organic/inorganic sunscreens, and found that green tea extract, cheongho extract and neem leaf extract together with seaweed extract increase the UV protection level of the sunscreen cosmetic composition, The invention of a sunscreen cosmetic composition to which the principle is applied has been completed.

Republic of Korea Patent Registration No. 10-0969325

An object of the present invention is a UV-blocking cosmetic composition comprising a seaweed extract containing a natural UV-absorbing component, which exhibits excellent long-wave UV protection, and one or more natural ingredients selected from green tea extract, cheongho extract, and neem leaf extract, which exhibit excellent anti-inflammatory effects is to provide

In addition, the present invention is to provide a cosmetic composition for UV protection that has excellent UV blocking effect and good spreadability without causing severe cloudiness.

In order to achieve the above technical object, the present invention provides a cosmetic composition for sunscreen comprising at least one natural ingredient selected from seaweed extract, green tea extract, cheongho extract, and neem leaf extract.

Specifically, in the present invention, there is provided a cosmetic composition for sunscreen containing the seaweed extract in an amount of 0.001% to 20% by weight based on the total weight of the composition.

In addition, the present invention provides a cosmetic composition for sunscreen containing natural ingredients in an amount of 0.000001 wt% to 20 wt% based on the total weight of the composition.

The cosmetic composition for UV protection according to the present invention can improve the UV protection level by including at least one natural ingredient selected from seaweed extract, which exhibits excellent UV protection, green tea extract, cheongho extract, and neem leaf extract, which exhibits excellent anti-inflammatory effect, It is possible to provide a cosmetic composition for sunscreen that exhibits skin improvement effects such as excellent formulation stability, excellent spreadability, and improved feeling of use.

The present invention is

seaweed extract; and

It relates to a cosmetic composition for sunscreen comprising at least one natural ingredient selected from the group consisting of green tea extract, cheongho extract and neem leaf extract as an active ingredient.

The cosmetic composition for blocking UV rays according to the present invention may include those having a UV protection factor (SPF) of 10 to 50+ and a long-wave UV protection rating (PA) of triple plus (PA+++).

Hereinafter, the cosmetic composition for sunscreen of the present invention will be described in more detail.

The UV blocking component of the present invention includes seaweed extract, which exhibits excellent UV protection effect and is used alone or in combination with one or more natural ingredients selected from green tea extract, cheongho extract, and neem leaf extract, which will be described later, to give the composition UV blocking effect. do.

The seaweed extract may be extracted by a method known in the art, and the method is not particularly limited. Alternatively, a commercially available extract may be used.

The seaweed extract of the present invention may be included in the range of 0.001 to 20% by weight based on the total composition, for example, it may be in the range of 0.1 to 10% by weight. If the content is less than 0.001% by weight, it is difficult to see the desired effect due to poor long-wave UV absorption, and if it exceeds 20% by weight, the physical properties of the composition are rather deteriorated, or the effect is not significantly increased.

In addition, the cosmetic composition for sunscreen of the present invention includes natural ingredients. The natural ingredients include at least one selected from green tea extract, cheongho extract, and neem leaf extract. Since the extract has an anti-inflammatory effect, it is possible to eliminate erythema and the like occurring on the skin by UV irradiation.

The natural component may be extracted by a method known in the art, and the method is not particularly limited. Alternatively, a commercially available extract may be used.

The natural component may be an extract obtained by extracting green tea, cheongho and neem leaves with water and/or an organic solvent, respectively, and the organic solvent may be a polar organic solvent, a non-polar organic solvent, or a mixture thereof. The polar organic solvent may be a lower alcohol having 1 to 5 carbon atoms, ethyl acetate or acetone, and the non-polar organic solvent may be ether, chloroform, benzene, hexane or dichloromethane. For example, the lower alcohol having 1 to 5 carbon atoms may be methanol, ethanol, propanol, butanol or isopropanol.

In one embodiment, the green tea extract, cheongho extract, and neem leaf extract may include fractions obtained by fractionating the primary extract extracted using the above-described extraction solvent using an extraction solvent having a different polarity. For example, green tea extract, cheongho extract, and neem leaf extract may be fractions obtained by extracting with an alcohol having 1 to 5 carbon atoms, and then re-fractioning with a solvent having a different polarity, such as ether, benzene, or hexane. In the fractionation, two or more solvents may be used, and each solvent extract may be prepared by sequentially using or mixing them according to the polarity of the solvent.

In the present invention, the prepared extract or the fraction obtained by performing the fractionation process may be filtered or the solvent may be removed by performing a concentration or drying process, and all of the filtration, concentration and drying may be performed. Specifically, the filtration may be performed using filter paper or a reduced pressure filter, and the concentration may be concentrated under reduced pressure using a reduced pressure concentrator or the like, and drying may be performed by a freeze-drying method.

In addition, silica gel column chromatography, thin layer chromatography, or high performance liquid chromatography with respect to the prepared extract or the fraction obtained by performing the fractionation process, such as Further purified fractions can be obtained by purification using various chromatography methods.

In addition, the natural ingredient of the present invention may be included in the cosmetic composition in an amount of 0.000001 to 20% by weight, for example, 0.000001 to 10% by weight. If the content is less than 0.000001% by weight, it is difficult to expect an anti-inflammatory effect, and if it exceeds 20% by weight, the effect does not significantly increase.

It is more preferable to use a mixture of green tea extract, cheongho extract and neem leaf extract as the natural ingredients, and the weight ratio is not particularly limited, but green tea extract: cheongho extract: neem leaf extract is about 1:1 by weight. Mixing with UV light can enhance the UV blocking effect or maximize the effect of preventing erythema occurring on the skin by UV irradiation.

The cosmetic composition for sunscreen of the present invention may also include a sunscreen agent used in a conventional cosmetic composition, and accordingly, the sunscreen effect may be further increased. Examples of the sunscreen include an organic sunscreen component or an inorganic sunscreen component, and each of the components may be used alone or in combination of two or more. Examples of the organic sunscreen ingredients include octyl methoxy cinnamate, octyl salicylate, octocrylene, benzophenone-3, benzophenone-4, benzophenone-8, homosalate, ethylhexyltriazone, polysilicon- 15, diethylaminohydroxybenzoylhexylbenzoate, butyl methoxy dibenzoyl methane, oxybenzone, octyl triazone, menthyl anthranilate, 3,4-methylbenzylidene camphor, 2-phenylbenzimidazole-5-sulfur and at least one selected from the group consisting of phonic acid, disodiumphenyldibenzimidazoletetrasulfonate, isoamyl p-methoxycinnamate, and bis-ethylhexyloxyphenol methoxyphenyltriazine, and examples of the inorganic UV blocking component include: may include one or more selected from the group consisting of titanium dioxide and zinc oxide, but is not limited thereto.

The content of the UV blocking component is also not particularly limited and may be appropriately selected depending on the intended use, but in the case of an organic UV blocking component, it is preferably included in the cosmetic composition in an amount of 1 to 30% by weight, and in the case of an inorganic UV blocking component It is preferably included in an amount of 1 to 40% by weight. If the content of the organic UV-blocking component or inorganic UV-blocking component is less than 1% by weight, there is a fear that the UV-blocking effect is not sufficient, and the content of the organic UV-blocking component exceeds 30% by weight or the content of the inorganic UV-blocking component is 40 When it exceeds the weight %, there is a fear that the feeling of use of the cosmetic composition is reduced.

The cosmetic composition for sunscreen of the present invention may further include ingredients normally included in the cosmetic composition in addition to the seaweed extract, natural ingredients, and sunscreen, which are the sunscreen ingredients, which will be described in detail as follows.

The cosmetic composition for sunscreen of the present invention may further include a nonionic surfactant. The nonionic surfactant is preferably a lipophilic nonionic surfactant in order to improve formulation stability. For example, it is preferable to use at least one selected from the group consisting of glyceryl stearate, sorbitan sesquioleate, sorbitan stearate, PEG-10 dimethicone, and sorbitan olivate. In addition, the nonionic surfactant may be included in an amount of 0.5 to 10% by weight. That is, the nonionic surfactant is preferably included in an amount of 0.5 wt% or more in consideration of formulation stability, and is preferably included in an amount of 10 wt% or less for a feeling of use.

The cosmetic composition for sunscreen of the present invention may further include an oil. The type of the oil is not particularly limited, and a conventional oil used in a cosmetic composition may be used. Specifically, hydrocarbon-based oil including squalane or mineral oil; Caprylic/capric triglyceride, neopentyl glycol dicaprate, 2-octyldodecylmyristate, isopropyl myristate, cetyl 2-ethylhexanoate, octyldodecanol, or glyceryl triethylhexanoate Ester-based oil comprising; vegetable oils including olive oil, jojoba oil, or macadamia oil; And it is preferable to use at least one selected from the group consisting of silicone oil containing cyclomethicone or dimethicone.

The content of the oil is also not particularly limited and may be appropriately selected depending on the intended use, but is preferably included in an amount of 1 to 50% by weight. If the content of the oil is less than 1% by weight, there is a fear that the physical properties of the composition may decrease, and if it exceeds 50% by weight, the viscosity of the composition may become excessively high, thereby reducing the feeling of use.

The cosmetic composition for sunscreen of the present invention may further include a dispersing agent. The dispersant may use polyhydric alcohols such as glycerin, butylene glycol, or propylene glycol in order to improve the feeling of use and dispersibility of the sunscreen. The dispersant is preferably included in an amount of 0.5 to 50% by weight based on the total composition.

In addition to the above, the cosmetic composition for sunscreen of the present invention may further include a moisturizing agent, a thickener, an oxidation stabilizer, a bactericide, a preservative, a fragrance, a colorant, or other additives in the range that does not affect the effect of the present invention.

The cosmetic composition for sunscreen of the present invention can be completed by including the remainder except for the above-mentioned ingredients with purified water. In addition, the cosmetic composition for sunscreen of the present invention may be prepared by a conventional method in this field by using each of the above-described components, and the method is not particularly limited.

Hereinafter, the present invention will be described in detail by way of Examples. However, the following examples only illustrate the present invention, and the content of the present invention is not limited to the following examples.

production example 1: Preparation of seaweed extract

In order to prepare an extract without destroying the effective ingredients contained in seaweed, the zeodration method was used. The zeodration method is a method of dehydration using zeolite in a low-temperature vacuum state, and thus the effective component of the extract can be obtained at a high concentration. Specifically, laver was put in a solvent, and after extracting the ingredients, filtration and concentration were dried by a low-temperature vacuum drying method, then finely pulverized and extracted with glycerin.

production example 2: green tea, Cheongho and neem leaf Preparation of extracts

In order to solve the insignificant skin improvement effect in the case of single use of plant extracts, in order to prepare extracts that are extracted together not only with the flavonoids of each plant, but also with the ingredients that can work together, the effective ingredients are extracted by vacuum low temperature method. Extracted without destruction.

Specifically, cheongho, neem leaf and green tea are washed with water and dried in the shade, and then the dried cheongho, neem leaf and green tea are crushed and put into an extraction container, respectively, and extracted repeatedly under vacuum at a low temperature of 60° C. with glycerin to extract each extract was obtained. The obtained extract was filtered to remove solids using a filter paper or the like, and then the extract was concentrated under reduced pressure to prepare an extract.

The two or more kinds of mixed extracts selected from the group consisting of cheongho, neem leaf and green tea of the present invention, after extracting the cheongho, neem leaf and green tea, respectively, are prepared by mixing two or more kinds of each extract, or the cheongho, neem leaf and green tea It can be prepared by extracting two or more selected from the group consisting of.

Example 1. For UV protection cosmetics Preparation of the composition

In Table 1 below, raw materials 1 to 7 were separately weighed in a beaker, and then heated to 70 to 75° C. and stirred to form a homogeneous phase. Then, the raw materials 8 to 13 were weighed in a separate beaker and stirred while heating to make a homogeneous phase. While mixing the mixture of raw materials 1 to 7, the mixture of raw materials 8 to 13 was slowly added at a high temperature and stirred for 20 minutes to prepare a cosmetic composition for UV protection. At this time, when preparing the mixture of the raw materials 1 to 7, it was prepared while paying attention to whether it was sufficiently dispersed. The composition of the cosmetic composition is shown in Table 1 below.

comparative example 1. For UV protection cosmetics Preparation of the composition

A sunscreen cosmetic composition was prepared in the same manner as in Example 1, except that in Example 1, raw material 11 was included. The composition of the cosmetic composition is shown in Table 1 below.

comparative example 2. For UV protection cosmetics Preparation of the composition

A sunscreen cosmetic composition was prepared in the same manner as in Example 1, except that in Example 1, raw materials 10 and 11 were included. The composition of the cosmetic composition is shown in Table 1 below.

Raw material name (% by weight) Example 1 Comparative Example 1 Comparative Example 2 One titanium dioxide 15 15 15 2 zinc oxide 25 25 25 3 Argan tree kernel oil One One One 4 olive oil One One One 5 Sorbitan Oliveate 0.5 0.5 0.5 6 Caprylic/Capric Triglycerides One One One 7 Coco-Caprylate/Caprate 15 15 15 8 Purified water To 100 To 100 To 100 9 glycerin 3 3 3 10 seaweed extract 2 2 - 11 Green tea extract, cheongho extract, neem leaf extract 2 - - 12 magnesium sulfate 0.1 0.1 0.1 13 butylene glycol 5 5 5 total 100

Experimental example 1. Check the UV protection effect

Example 1 and Comparative Examples 1 and 2 were performed in vitro SPF clinical tests. After the samples of Example 1 and Comparative Examples 1 and 2 were applied to artificial skin (Vitroskin), UV rays were irradiated to measure UV protection values. It can be seen that the higher the SPF and PA values, the higher the UV protection ability. The results are shown in Table 2 below.

sample Judgment result SPF PA Example 1 46 +++ Comparative Example 1 40 +++ Comparative Example 2 30 ++

As shown in Table 2, Example 1 and Comparative Example 1 containing laver extract (raw material 10) in common had SPF 40 or higher, PA +++, and had a superior UV protection effect compared to Comparative Example 2 which did not contain any extract was able to confirm However, in the case of Example 1 including the green tea extract, Cheongho extract and neem leaf extract (raw material 11) of the present invention, it was confirmed that it exhibited a higher UV protection effect than Comparative Example 1 containing only laver extract (raw material 10). .

Experimental Example 2. Evaluation of usability

50 women aged 25 to 45 years were divided into 4 groups, and Examples 1 and Comparative Examples 1 and 2 were appropriately adjusted in each group to be used on both sides of the face, and spreadability, absorption power, and moisturizing power according to the following evaluation criteria , the overall feeling of use, etc. were evaluated. The results are shown in Table 3.

<Evaluation criteria>

1: bad

2: slightly bad

3: Normal

4: Slightly good

5: Very good

Item Example 1 Comparative Example 1 Comparative Example 2 spreadability 4.8 4.6 2.7 absorptivity 4.6 4.4 2.4 moisturizing power 4.7 4.5 2.9 overall feeling of use 4.7 4.5 2.6

As shown in Table 3 above, in the case of Example 1 and Comparative Example 1 containing seaweed extract even in the use evaluation for actual women, compared to Comparative Example 1, it was significantly superior in all areas of spreadability, absorption power, moisturizing power, and overall feeling of use. It received excellent reviews. However, in the case of Example 1, by additionally including a green tea extract, a cheongho extract, and a neem leaf extract (raw material 11), it was confirmed that it received a superior evaluation than Comparative Example 1 using only laver extract (raw material 10) in all items.

Experimental Example 3. Stability evaluation

The formulation stability of Example 1 according to the items in Table 4 below was evaluated to confirm the formulation stability according to temperature.

<Evaluation criteria>

Stable: No separation and smooth and uniform surface condition

Unstable: Separation occurs or the surface is not smooth

Item Example 1 50 degrees (21 days) stability 45 degrees (30 days) stability Cycle
(-10 degrees to 45 degrees, 30 days) stability Frozen (F/T) 5 times stability

As shown in Table 4, formulation stability was confirmed through that phase separation did not occur in the composition according to Example 1 under the above conditions.

Claims (13)

seaweed extract; and
A cosmetic composition for sunscreen comprising natural ingredients, green tea extract and cheongho extract, as active ingredients. According to claim 1,
Seaweed extract is an extract obtained by extracting seaweed with one or more selected from the group consisting of water and an organic solvent, a cosmetic composition for UV protection. According to claim 1,
Green tea extract is an extract obtained by extracting green tea with one or more selected from the group consisting of water and an organic solvent, a cosmetic composition for UV protection. According to claim 1,
The cheongho extract is an extract obtained by extracting cheongho with one or more selected from the group consisting of water and an organic solvent, a cosmetic composition for UV protection. delete 5. The method according to any one of claims 2 to 4,
The organic solvent is a polar solvent including a lower alcohol having 1 to 5 carbon atoms, ethyl acetate, or acetone; non-polar solvents including ether, chloroform, benzene, hexane or dichloromethane; Or a cosmetic composition for UV blocking that is a mixed solvent thereof. According to claim 1,
The seaweed extract is a cosmetic composition for UV protection in an amount of 0.001% to 20% by weight based on the total weight of the composition. According to claim 1,
The natural ingredient is a cosmetic composition for UV protection in an amount of 0.000001 wt% to 20 wt% based on the total weight of the composition. According to claim 1,
A cosmetic composition for UV protection that further comprises at least one selected from the group consisting of an organic UV blocking component and an inorganic UV blocking component. 10. The method of claim 9,
Organic sunscreen ingredients include octyl methoxy cinnamate, octyl salicylate, octocrylene, benzophenone-3, benzophenone-4, benzophenone-8, homosalate, ethylhexyltriazone, polysilicon-15, die Chilaminohydroxybenzoylhexylbenzoate, butyl methoxy dibenzoyl methane, oxybenzone, octyl triazone, menthyl anthranilate, 3,4-methylbenzylidene camphor, 2-phenylbenzimidazole-5-sulfonic acid, di Sodium phenyldibenzimidazole tetrasulfonate, isoamyl p-methoxycinnamate, and bis-ethylhexyloxyphenol A cosmetic composition for sunscreen comprising at least one selected from the group consisting of methoxyphenyltriazine. 10. The method of claim 9,
The inorganic sunscreen component is a cosmetic composition for sunscreen comprising at least one selected from the group consisting of titanium dioxide and zinc oxide. 10. The method of claim 9,
The amount of the organic sunscreen component is 1 wt% to 30 wt% based on the total weight of the composition for sunscreen cosmetic composition. 10. The method of claim 9,
The amount of the inorganic sunscreen component is 1 wt% to 40 wt% based on the total weight of the composition for sunscreen cosmetic composition.