KR20200113904A - Skin protection composition - Google Patents

Abstract

A skin protection composition according to the present invention is for skin moisturizing and skin inflammation alleviation which contains a Centella asiatica extract as an active component. More specifically, the present invention relates to a skin protection composition which contains 2 to 70 wt% of a Centella asiatica extract based on the total weight of the skin protection composition.

Description

Skin protection composition

The present invention relates to a skin protective composition, containing centella asiatica extract as an active ingredient, and to a skin protective composition for moisturizing the skin and improving skin inflammation.

The skin is composed of several layers of cells that coat and protect the keratin and collagen fiber proteins that form the skeleton of the skin structure. In addition, because our skin is in direct contact with the external environment, it reacts very sensitively to external stimuli and changes, thus protecting the internal environment of our body. However, skin damage occurs due to various external or internal stress factors.

Due to these skin damage inducing factors, the lipid layer constituting the skin is damaged, resulting in a rapid increase in transdermal moisture loss, resulting in skin dryness. In addition, in addition to drying the skin, infections caused by bacteria or viruses also occur, resulting in skin inflammation. In order to block skin damage caused by such a series of processes, a material that can block moisture loss in the skin to increase the moisturizing effect, block the activity of bacteria, and remove substances with strong oxidizing properties is required.

Cosmetics can be broadly classified into basic cosmetics for supplying nutrition to the skin and color cosmetics in which pigments that are not harmful to the human body are mixed in order to express the contours in a unique way. In particular, basic cosmetics include emulsions, lotions, skins, and lotions, and most women and men use basic cosmetics. These basic cosmetics not only cleanse the skin by removing dead skin cells and impurities from the skin, but also prevent troubles by forming a thin protective film while soothing the skin damaged by external or internal factors by balancing oil and moisture. do.

In addition, in recent years, as income increases, the standard of living has improved, leading to more investments in cosmetics to enhance one's image. And as the elderly population increases, interest and demand for functional cosmetics related to anti-aging, wrinkle improvement, whitening, and sun protection are increasing. However, since most of these basic cosmetics or functional cosmetics compositions are made of chemical substances, skin troubles often occur when applied to sensitive skin.

Therefore, recently, a composition containing as an active ingredient a plant extract of a natural material having excellent effects in terms of improving skin condition or preventing skin aging or skin damage due to its excellent moisturizing, anti-aging, antioxidant, and anti-inflammatory effects There is a lot of research going on.

Under this background, the present inventors have discovered a skin protection composition containing centella asiatica extract that has excellent moisturizing power and skin improvement effect and is safe for human application, and has completed the present invention.

Republic of Korea Patent Publication No. 10-2003-0024932 (2003.03.28)

An object of the present invention is to provide a skin protection composition for skin moisturizing, skin texture improvement, skin aging prevention or improvement, and skin inflammation improvement comprising centella asiatica extract.

In addition, an object of the present invention is to provide a skin protection cosmetic such as a cream and lip balm tint using the skin protection composition.

The skin protection composition according to the present invention provides a skin protection composition comprising 2% to 70% by weight of centella asiatica extract based on the total weight of the skin protection composition.

In the above, centella asiatica extract is characterized in that it contains 35% by weight to 60% by weight based on the total weight of the skin protection composition.

In the above, the skin protection composition is characterized in that it further comprises a pine needle extract.

In the above, the pine needle extract is characterized in that it contains 0.001% by weight or more and less than 30% by weight based on the total weight of the skin protection composition.

In the above, centella and pine needles extract is characterized in that it comprises 1:0.1 to 1 ratio.

In the above, centella and pine needles extract is characterized in that it contains in a ratio of 1:0.1 to 0.5.

In addition, it provides an antibacterial and skin moisturizing product comprising the above composition.

And it provides a product in which the product is a cosmetic.

The skin protection composition comprising the centella asiatica extract according to the present invention is a useful substance having skin moisturizing and skin inflammation improving effects, and has an effect that can be widely used for skin protection.

Centella asiatica included in the skin protection composition of the present invention is a perennial herb belonging to the umbela cactusaceae. Centella asiatica is also called gotu-cola, tiger grass, clam grass, or horseshoe grass. It grows naturally in the mountains and fields of the southern islands of the Korean peninsula, and grows in a somewhat humid place.

Centella asiatica has a main stem extending sideways and two degenerated scale-shaped leaves near the node where the root falls. The leaves come out from the axils like scales, the stalk is long, elliptical, 2~5cm in diameter, the surface is glossy, and there are dull serrations on the edge.

Flowers bloom red-purple from July to August. 2-5 flowers hang at the end of a long peduncle, there are almost no small peduncles, and there are 2 gun pieces. There are 5 petals, wide round, and 5 stamens. Fruits are flat round, have net eyes protruding on the outside, and hairs are initially but disappeared. Centella asiatica, a madekasol ingredient, is contained in Centella asiatica, which is used as a soothing ingredient that soothes the skin weakened by irritation and strengthens its self-renewal.

The pine needle extract, which is a component further included in the composition of the present invention, purifies the skin by lowering the heat of the skin, and has a soothing effect with its unique sterilization action, thereby acting to relieve itchiness and irritation.

Pine needles, the raw material of pine needle extract, are rich in terpene-based phytoncide and generate negative ions by themselves, and are a material containing a large amount of vitamins and minerals that are beneficial to the human body. In addition, pine needles improve user satisfaction by providing pine scent to the final composition. It is well known that the terpenoids of pine needles prevent skin aging. In addition to terpenes, pine needles promote the process of reducing keratinization and keratinization by oxidizing biological tissues by isomerizing α-Finene components in pine needles to Campone.

The skin protection composition of the present invention may further contain dandelion extract.

The dandelion (Taraxacum platycarpum Dahlst.) refers to a dicotyledonous plant belonging to the genus Asteraceae and dandelion, whose leaves are split like wing feathers, gathered from the roots in early spring and spread sideways along the ground. Yellow flowers bloom from April to May. The fruit is a flat achen and has white hairs, so it is easily blown away when the wind blows. On the other hand, it often grows in sunny places and has deep roots, so it does not die well even if trampled on.

The dandelion contains a large amount of vitamin B, vitamin C, and saponin flavonoids, so it has excellent efficacy in improving skin tone, soothes the skin comfortably, and protects the skin from free radicals that cause skin aging. In addition, it has inhibitory action and antioxidant activity against skin fungi.

The term "extract" as used in the present invention refers to an extract obtained by extracting plants, a diluted or concentrated solution of the extract, a dried product obtained by drying the extract, a crude or purified product of the extract, or a mixture thereof, It includes the extract itself and extracts of all formulations that can be formed using the extract. The extract of the present invention may be prepared and used in a dry powder form, preferably after extraction.

The extract of the present invention may be extracted from natural, hybrid or variant plants, and may be extracted from plant tissue culture.

In the present invention, the type of the extraction solvent used to extract the plant is not particularly limited, and any solvent known in the art may be used. Non-limiting examples of the extraction solvent include one or more solvents selected from the group consisting of water, glycerin, alcohol, 1,3-butylene glycol, and ethyl acetate, and when alcohol is used as a solvent More preferably, a C1 to C4 alcohol may be used. The extract of the present invention may be preferably water, glycerin or ethanol extract.

In the extract of the present invention, a method of extracting the plant is not particularly limited, and may be extracted according to a method commonly used in the art. Non-limiting examples of the extraction method include vacuum low temperature extraction, room temperature extraction, hot water extraction, cold needle extraction, reflux cooling extraction, ultrasonic extraction and steam extraction, etc., which are performed alone or in combination of two or more methods. Can be done.

According to a specific embodiment of the present invention, after washing centellar, pine needles, and dandelion with water and drying in the shade, the dried centella asiatica, pine needles, and dandelion are pulverized and put into an extraction container, followed by vacuum at a low temperature of 60°C with an extraction solvent. Extract was obtained by repeated extraction under. The obtained extract was filtered to remove solids using filter paper or the like, and the extract was concentrated under reduced pressure to prepare an extract. The extract may be used after preparing centella extract, pine needle extract, and dandelion extract, respectively.

The composition of the present invention is a skin protection composition comprising 2% to 70% by weight of centella asiatica extract based on the total weight of the skin protection composition. In a more preferred embodiment, the present invention comprises 35% to 60% by weight of centella asiatica extract based on the total weight of the skin protective composition. In an even more preferred embodiment, the composition of the present invention comprises 40% to 60% by weight of centella asiatica extract based on the total weight of the skin protection composition.

The skin protection composition may further contain pine needle extract. The pine needle extract contains 0.001% by weight or more and less than 30% by weight of the pine needle extract based on the total weight of the skin protection composition. In a more preferred embodiment, the present invention comprises 0.01% to 25% by weight of the pine needle extract based on the total weight of the skin protective composition. In an even more preferred embodiment, the present invention comprises a pine needle extract from 5% to 20% by weight based on the total weight of the skin protective composition.

Dandelion extract may be further included in the skin protection composition. The dandelion extract contains 0.001% by weight or more and less than 20% by weight of the dandelion extract based on the total weight of the skin protection composition. In a more preferred embodiment, the present invention comprises 0.01% to 15% by weight of the dandelion extract based on the total weight of the skin protective composition. In an even more preferred embodiment, the present invention comprises 1% to 10% by weight of dandelion extract based on the total weight of the skin protective composition.

The composition of the present invention is a skin protection composition comprising centella asiatica and pine needle extract in a ratio of 1:0.1 to 1. In a more preferred embodiment, the composition of the present invention is a skin protection composition comprising centella asiatica and pine needle extract in a ratio of 1:0.1 to 0.5. In an even more preferred embodiment, the composition of the present invention is a skin protection composition comprising centella asiatica and pine needle extract in a ratio of 1:0.3.

The composition of the present invention is a skin protection composition comprising centella asiatica and dandelion extract in a ratio of 1:0.1 to 1. In a more preferred embodiment, the composition of the present invention is a skin protection composition comprising centella and dandelion extract in a ratio of 1:0.1 to 0.5. In an even more preferred embodiment, the composition of the present invention is a skin protection composition comprising centella asiatica and dandelion extract in a ratio of 1:0.3.

In the composition of the present invention, when all centella asiatica extract, pine needles extract and dandelion extract are included, the ratio of centella asiatica extract: pine needles extract: dandelion extract is a skin protection composition containing 1:0.1 to 1:0.1 to 1 ratio. In a more preferred embodiment, the ratio of centella extract: pine needle extract: dandelion extract is a skin protection composition comprising a ratio of 1:0.1 to 0.5:0.1 to 0.5. In an even more preferred embodiment, the ratio of centella extract: pine needle extract: dandelion extract is a skin protection composition comprising a ratio of 1:0.3:0.3.

The formulation of the skin protective composition according to the present invention is not particularly limited, and the formulation may be appropriately selected according to the intended purpose.

For example, lotion (skin lotion), skin softener, skin toner, astringent, lotion, milk lotion, moisture lotion, nourishing lotion, massage cream, sun cream, nourishing cream, moisture cream, hand cream, foundation, makeup base, cheek Consisting of blusher, lipstick, lip gloss, lip tint, lip balm tint, essence, nutrition essence, pack, soap, cleansing foam, cleansing lotion, cleansing cream, body lotion, body cleanser, suspension, gel, powder, paste, mask pack or sheet It may be prepared in one or more formulations selected from the group, but is not limited thereto. Compositions of these formulations can be prepared according to methods conventional in the art.

In addition to the components described above, the skin protection composition includes preservatives, stabilizers, surfactants, thickeners, solubilizers, moisturizers, emollients, ultraviolet absorbers, preservatives, disinfectants, emulsifiers, antioxidants, pH adjusters, organic and inorganic pigments, fragrances, Additives commonly used in the art, such as a cooling agent or a limiting agent, may be further included. The blending amount of additional components such as the preservative can be easily selected by a person skilled in the art within a range that does not impair the object and effect of the present invention, and the blending amount may be 0.001 to 20% by weight based on the total weight of the composition.

Since the skin protection composition contains centella asiatica extract, it can be used to improve or treat skin damage such as skin moisturization, skin inflammation improvement, and skin protection.

The product containing Centella asiatica extract contained in the skin protection composition of the present invention has an antioxidant effect on products that do not contain Centella asiatica extract, is safe for human skin, has excellent skin moisturizing power, and has an effect of protecting the skin. Done. In addition, there was an antibacterial activity effect on centella asiatica extract.

In addition to the above extract, the skin protection composition of the present invention may contain additional ingredients that do not inhibit antibacterial, skin moisturizing, and antioxidant effects.

As a component having antibacterial properties, there is a natural antibacterial substance such as tea tree extract, and known antibiotic substances may be mixed with amoxixillin, tetracyclin, and the like.

The product containing Centella asiatica extract contained in the skin protection composition of the present invention has an antioxidant effect on products that do not contain Centella asiatica extract, is safe for human skin, has excellent skin moisturizing power, and has an effect of protecting the skin. Done. In addition, there was an antibacterial activity effect on centella asiatica extract.

In addition, among the formulations containing the skin protection composition of the present invention, lip balm tint applied to the lips was found to be excellent in sensory evaluation for application, adhesion, persistence, color development, etc., and had excellent skin moisturizing power.

Hereinafter, the present invention will be described in more detail by way of examples. The following examples are merely for explaining the present invention in more detail, and are not intended to limit the present invention.

Example 1: Preparation of skin protection composition

Nourishing cream

Examples of the preparation of a nutrient cream containing centella asiatica extract, centella asiatica extract and pine needle extract, centella asiatica extract and dandelion extract, centella asiatica extract and pine needle extract, and dandelion extract are shown in Table 1 below. Purified water, triethanolamine, and propylene glycol as aqueous phase were heated and dissolved at 70°C. A liquid obtained by heating and dissolving an oily fatty acid, an oily component, an emulsifier and a preservative at 70°C was added to emulsify. When the emulsification was completed, the solution was cooled to 45°C, centella extract, pine needle extract, dandelion extract and fragrance were added and dispersed, and then cooled to 30°C.

Composition and content of cream containing centella asiatica extract Content (% by weight) ingredient Test group 1 Test group 2 Test group 3 Test group 4 Centella asiatica extract 40 40 40 40 Pine needle extract 0 4 0 4 Dandelion extract 0 0 4 4 Jojoba oil 4.0 4.0 4.0 4.0 Liquid paraffin 5.0 5.0 5.0 5.0 Cetylaryl alcohol 1.5 1.5 1.5 1.5 Polyglyceryl-3 methyl glucose distearate 1.5 1.5 1.5 1.5 Glyceryl stearate 0.5 0.5 0.5 0.5 Squalane 2.0 2.0 2.0 2.0 Propylene glycol 2.0 2.0 2.0 2.0 glycerin 6.0 6.0 6.0 6.0 Triethanolamine 0.2 0.2 0.2 0.2 Carboxy vinyl polymer 0.2 0.2 0.2 0.2 Tocopheryl acetate 0.3 0.3 0.3 0.3 Preservatives, incense a very small amount a very small amount a very small amount a very small amount Purified water Balance Balance Balance Balance Sum 100 100 100 100

Comparative group 1: Purified water Containing cream

ingredient Content (% by weight) Jojoba oil 4.0 Liquid paraffin 5.0 Cetylaryl alcohol 1.5 Polyglyceryl-3 methyl glucose distearate 1.5 Glyceryl stearate 0.5 Squalane 2.0 Propylene glycol 2.0 glycerin 6.0 Triethanolamine 0.2 Carboxy vinyl polymer 0.2 Tocopheryl acetate 0.3 Preservatives, incense a very small amount Purified water Balance Sum 100

Example 2: Measurement of skin improvement effect

For the products of Comparative Group 1 and Implementation Groups 1 to 4, the skin improvement effect was performed in healthy 30 to 50 year old women as follows.

For 40 women aged 35 to 50 years old, 10 for each test group, the cream of the control group on the right cheek, and the cream of the test groups 1 to 4 containing centella asiatica extract, pine needle extract, and dandelion extract on the left cheek Was applied twice a day for 2 months.

After 2 months, the degree of skin improvement was evaluated through a questionnaire of subjects and image analysis of the skin. The subject's questionnaire was evaluated in three stages of improvement in skin texture, skin moisturization and elasticity compared to before use: no improvement, slight improvement, and significant improvement, and the results are shown in Table 3 (unit: persons).

sample No improvement Slight improvement Significant improvement Comparative group 29 One 0 Test group 1 One 2 7 Test group 2 3 6 One Test group 3 2 8 0 Test group 4 0 One 9

As can be seen from Table 3 above, it can be seen that when the test groups 1 to 4 according to the present invention are used, the effect of improving skin conditions including skin texture improvement and skin moisturizing and elasticity enhancing effects is excellent.

Example 3: Preparation of skin protection composition

Lip Balm Tint

Examples of the preparation of lip balm tint containing no centella asiatica extract, centella asiatica extract, centella asiatica extract and pine needle extract, centella asiatica extract and dandelion extract, centella asiatica extract and pine needle extract, and lip balm tint containing dandelion extract are shown in Table 1 below.

Components and Content of Lip Balm Tint Containing Centella asiatica extract Content (% by weight) ingredient Comparative group 2 Test group 5 Test group 6 Test group 7 Test group 8 Centella asiatica extract 0 40 40 40 40 Pine needle extract 0 0 4 0 4 Dandelion extract 0 0 0 4 4 Sunflower oil Balance Balance Balance Balance Balance Caster oil 6 6 6 6 6 Trimethylpentaphenyltrisiloxane 11 11 11 11 11 Isostearyl glyceryl ether 13 13 13 13 13 Beeswax 3 3 3 3 3 Shea Butter 3 3 3 3 3 Text Lin Palmitate 2 2 2 2 2 Ranulin 3 3 3 3 3 Sum 100 100 100 100 100

Example 4: sensory evaluation

In order to evaluate the basic physical properties of the above Example and Comparative Example, the application was applied to 5 women and 2 men, and the preference of feeling (appliance, adhesion, persistence, skin moisturizing power) was set on a scale of 5 points (1 point: very bad, 2 points: Bad, 3 points: moderate, 4 points: good, 5 points: very good).

Application was carried out three times by directly applying in a random order to samples limited to the same package and capacity, and the results are shown in Table 5.

sample Control group 2 Test group 5 Test group 6 Test group 7 Test group 8 Spreadability 4 4 4.1 4 4.5 Closeness 3.9 4 3.9 4 4.2 Persistence 4 4.2 4 4.1 4.2 Skin moisturizing power 4 4.1 4.1 4 4.3

As can be seen in Table 5, it was confirmed that the application properties, adhesion, persistence, and skin moisturizing power were excellent when using test groups 5 to 8 according to the present invention.

Claims (11)

Skin protection composition comprising 2% by weight to 70% by weight based on the total weight of the skin protection composition centella asiatica extract. The skin protection composition of claim 1, wherein the centella asiatica extract comprises 35 to 60% by weight based on the total weight of the skin protection composition. The skin protection composition of claim 1, wherein the skin protection composition further comprises a pine needle extract. The skin protection composition of claim 4, wherein the pine needle extract is contained in an amount of 0.001% to 15% by weight based on the total weight of the skin protection composition. The skin protection composition of claim 3, wherein the centella asiatica and pine needle extract are contained in a ratio of 1:0.01 to 0.2. The skin protection composition of claim 3, wherein the skin protection composition further comprises a dandelion extract. The skin protection composition of claim 6, wherein the dandelion extract is contained in an amount of 0.001% to 15% by weight based on the total weight of the skin protection composition. The skin protection composition of claim 6, wherein the centella asiatica and dandelion extract are contained in a ratio of 1:0.01 to 0.2. The skin protection composition of claim 6, wherein the centella asiatica extract, pine needle extract, and dandelion extract are contained in a ratio of 1:0.01 to 0.2:0.01 to 0.2. An antibacterial and skin moisturizing product comprising the composition of any one of claims 1 to 9. 11. The product of claim 10, wherein the product is a cosmetic.