KR20250019788A - A hydrogel composition for removing skin keratin, and a patch comprising the same - Google Patents

Abstract

The present invention relates to a hydrogel composition for exfoliation that has a strong lifting effect that water-soluble hydrogels do not have and that absorbs keratin and changes it to opaque, and provides a hydrogel composition for exfoliation that includes: a crosslinking agent; a moisturizer; a natural polymer gelling agent including iota carrageenan; and a synthetic polymer gelling agent.

Description

{A HYDROGEL COMPOSITION FOR REMOVING SKIN KERATIN, AND A PATCH COMPRISING THE SAME}

The present invention relates to a keratin-absorbing hydrogel composition, which, when attached to the skin, dissolves at skin temperature to enhance transdermal delivery of an active ingredient, and effectively removes keratin by absorbing impurities including sebum as well as keratin, thereby providing a skin-lifting effect.

Due to external factors such as irregular lifestyle and changes in day and night cycle, stress from social life, environmental pollution, and natural skin aging due to aging, the moisture in the stratum corneum decreases, the skin becomes dry, the surface becomes rough, the skin loses its luster, and appears dull.

Cosmetics in pack form temporarily form a thin film over the skin to block moisture evaporation to the outside, moisturizing the skin and allowing effective penetration of active ingredients. Recently, interest in cosmetics in pack form has been increasing.

A mask pack is a product that restores the skin's physiological function by wrapping the skin surface and supplying moisture and beauty ingredients to the skin.

Typically, mask packs are manufactured by impregnating skin beauty ingredients such as moisturizers and whitening agents into a sheet layer made of non-woven fabric, and then attaching it to the skin surface for a certain period of time to allow the impregnated skin beauty ingredients to be effectively absorbed into the skin.

Meanwhile, the skin is largely composed of three layers: the epidermis, dermis, and subcutaneous fat tissue. The epidermis is divided from the outside to the inside into the stratum corneum, stratum lucidum, stratum granulosum, and stratum basale.

The stratum corneum, the outermost layer of the epidermis, is the most important structure for the skin barrier function and is composed of non-nucleated, flat keratinocytes (corneocytes) and intercellular lipids (SC).

The multi-lamellar lipid layer formed by intercellular lipids such as ceramide, cholesterol, and fatty acids synthesized by keratinocytes of the skin barrier, which is maintained through the division and differentiation process of normal epidermal cells, acts as a protective barrier to prevent moisture within the skin from evaporating.

The keratinocytes in the stratum corneum are connected by proteins called desmosomes. As they move upward in the stratum corneum, the desmosomes break down, weakening the cohesion between keratinocytes and ultimately causing the keratinocytes to separate from the skin and fall off.

In normal skin, the stratum corneum consists of 15 to 20 layers, and it takes 15 to 20 days for them to completely separate.

However, as we age, the epidermis, dermis, and subcutaneous tissues, which are the components of the skin, become thinner, the moisture content of the skin decreases rapidly, and the skin loses elasticity and wrinkles due to changes in the ECM (Extracellular Matrix) component that gives the skin elasticity. In addition, the separation of the stratum corneum becomes slower than normal, so the stratum corneum thickens (keratinization), and the skin loses vitality.

Keratin stratification is mainly caused by decreased moisturizing power of the skin, decreased production and activity of desmosome-decomposing enzymes, and decreased cell activity, and is triggered by skin aging, exposure to ultraviolet rays, and pollution.

If the stratum corneum, which has thickened due to these internal and external factors, is artificially thinned externally, the activity or regeneration of living cells beneath the stratum corneum increases, making the skin smoother, and has the effects of removing wrinkles, suppressing and treating acne, etc. Therefore, many studies are being conducted to resolve stratum corneum within a range that does not cause irritation.

Physically rubbing the skin or using chemical peeling techniques to remove dead skin cells.

Chemical peeling has additional effects such as improving fine wrinkles, softening rough skin, and removing blemishes. The substances used in chemical peeling are basically AHA (Alpha-Hydroxy Acid) and BHA (Beta-Hydroxy Acid).

However, AHA is too irritating to the skin and is not suitable for use as an exfoliator, and polyhydroxy acid (PHA) has the effect of improving the skin by lowering the ionic bonding energy of keratinocytes to remove dead skin cells or shortening the cycle of the keratinization process to promote skin cell activity. However, it has the disadvantage of causing skin irritation when used in large quantities, and so its use as a cosmetic ingredient is limited.

Therefore, it is a time when the development of a means for effectively removing dead skin cells while minimizing irritation to the skin is required, and the inventors of the present invention have completed the present invention by deriving a mask pack with a new function and method that can efficiently remove dead skin cells while eliminating or minimizing the use of chemical exfoliants.

The present invention is to solve the problems of the prior art described above, and the purpose of the present invention is to provide a new type of hydrogel composition that can be easily used without irritating the skin, while exhibiting a lifting effect along with moisturizing the skin, and effectively absorbing dead skin cells.

According to one aspect of the present invention, a hydrogel composition for exfoliation is provided, comprising: a crosslinking agent; a moisturizer; a natural polymer gelling agent including iota carrageenan; and a synthetic polymer gelling agent.

In one embodiment, the natural polymer gelling agent may be comprised of kappa carrageenan and iota carrageenan.

In one embodiment, the kappa carrageenan and iota carrageenan may be present in a weight ratio of 100:80 to 120.

In one embodiment, the hydrogel composition for exfoliation may further include one or more exfoliating agents selected from the group consisting of lactic acid, citric acid, glycolic acid, gluconolactone, malic acid, tartaric acid, salicylic acid, lactobionic acid, and capryloyl salicylic acid.

In one embodiment, the exfoliating agent may comprise gluconolactone and lactobionic acid.

In one embodiment, the synthetic polymer gelling agent may be at least one selected from the group consisting of polyacrylate or a salt thereof, polymethacrylic acid, carboxyvinyl polymer, polyvinyl alcohol, polyacrylamide, polyethylene oxide, polyethyleneimine, polyvinylpyridone, PVP, methylcellulose, cellulose, carboxymethylcellulose, and hydroxy ether cellulose.

In one embodiment, the hydrogel composition for exfoliation may include 100 parts by weight of the natural polymer gelling agent; and 50 to 150 parts by weight of the synthetic polymer gelling agent.

In one embodiment, the hydrogel composition for exfoliation may further comprise one or more natural extracts selected from the group consisting of pine needle extract, Machihyeon extract, and Phellodendron amurense extract.

According to the present invention, the hydrogel composition has excellent adhesiveness and contractile force, so that it can provide skin moisturizing and lifting effects simply by attaching it to a certain part of the body, such as the face, and then removing it, and can also exhibit an exfoliation effect at the same time by absorbing dead skin cells on the skin surface.

The above hydrogel composition has excellent skin adhesion, so it can be attached to the skin for a long time without running down or slipping, and at the same time, it can provide a moisturizing feeling by controlling the amount of essence released, thereby providing a moisturizing feeling and skin soothing effect.

It should be understood that the effects of the present invention are not limited to the effects described above, but include all effects that can be inferred from the composition of the invention described in the detailed description or claims of the present invention.

Figure 1 compares the appearance before and after use of a hydrogel composition for exfoliation according to one embodiment of the present invention.

The terms used in this specification have been selected from widely used general terms as much as possible while considering the functions in the present invention, but these may vary depending on the intention of engineers working in the field, precedents, the emergence of new technologies, etc.

In addition, in certain cases, there are terms that the applicant has arbitrarily selected, and in this case, the meaning thereof will be described in detail in the description of the invention. Therefore, the terms used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than simply the name of the term.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms defined in commonly used dictionaries, such as those defined in common usage, should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

The numerical ranges are inclusive of the numbers defined in the above ranges. Every maximum numerical limitation given throughout this specification will include every lower numerical limitation, as if that lower numerical limitation were expressly written out. Every minimum numerical limitation given throughout this specification will include every higher numerical limitation, as if that higher numerical limitation were expressly written out. Every numerical limitation given throughout this specification will include every better numerical range within that broader numerical range, as if that narrower numerical limitation were expressly written out.

Hereinafter, examples of the present invention will be described in detail, but it is obvious that the present invention is not limited to the following examples.

According to one aspect of the present invention, a hydrogel composition for exfoliation is provided, comprising: a crosslinking agent; a moisturizer; a natural polymer gelling agent including iota carrageenan; and a synthetic polymer gelling agent.

The above hydrogel composition may be a polymer material that contains water but does not dissolve in water, in which chains of a hydrophilic polymer are crosslinked to form a three-dimensional network structure, and the hydrogel composition according to the present invention is a hybrid gel containing an insoluble synthetic polymer, and improves the adhesiveness of the hydrogel so that it can adhere to the skin.

Referring to Fig. 1, the hydrogel composition exhibits strong adhesiveness and lifting effect that water-soluble hydrogels do not have, and is transparent before use, but after being attached to the face, it may change to opaque after a certain period of time by absorbing keratin of the skin.

The above hydrogel composition can be usefully utilized for exfoliation purposes because it provides a visual effect of changing to a milky white color after use by adsorbing various impurities including keratin.

In particular, the hydrogel composition has high elasticity and strength, so it can be processed into a predetermined pad shape and attached to a specific body part for convenient use.

To this end, the hydrogel composition for exfoliation may include a crosslinking agent; a moisturizer; a natural polymer gelling agent including iota carrageenan; and a synthetic polymer gelling agent.

The crosslinking agent is preferably a polyvalent metal salt used to form a crosslink in a straight chain polymer or a branched polymer, and may be, for example, at least one selected from the group consisting of aluminum glycinate, aluminum hydroxide, aluminum hydroxide gel, hydrous aluminum silicate, kaolin, aluminum acetate, aluminum lactate, aluminum stearate, calcium chloride, magnesium chloride, aluminum chloride, calcium lactate, potassium chloride, magnesium aluminometasilicate, and magnesium aluminosilicate, but is not limited thereto.

The above moisturizer is preferably a polyhydric alcohol that provides a skin moisturizing effect and supplies moisture to the skin surface so that dead skin cells can be effectively absorbed, and may be, for example, at least one selected from the group consisting of glycerin, ethylene glycol, 1,3-butylene glycol, propylene glycol, dipropylene glycol, sorbitol, and xylitol, but is not limited thereto.

The above natural polymer gelling agent forms the skeleton of the hydrogel and may be, for example, at least one selected from the group consisting of carrageenan, agar, carob gum, xanthan gum, gellan gum, algin, glucomannan, galactomannan, guar gum, and pluronic, and may include iota-carrageenan.

The above carrageenan is a substance derived from seaweed ( Chondrus crispus ) and its structure is a copolymer of 3,6-anhydrous-D-galactose with α-1,3 or β-bonded hexose and potassium, sodium, magnesium, calcium, and ammonium sulfate esters of D-galactose. Depending on the position and number of sulfate groups in the hexose structure, it can be divided into iota, kappa, and lambda.

The above iota carrageenan has a sulfate group at position 2 of the hexose, and kappa carrageenan has one sulfate group for each disaccharide unit, and has a molecular weight of 10 to 35 kDa.

The above iota-carrageenan forms a soft gel in the presence of calcium ions, and although the gel is weak, it has little shrinkage and moisture loss, and is stable during freezing and thawing.

The above iota-carrageenan can react with starch, protein and cellulose derivatives to cause changes in properties, and can impart a visual exfoliating effect to the above hydrogel composition for exfoliation.

At this time, the natural polymer gelling agent may be composed of kappa carrageenan and iota carrageenan.

The above kappa carrageenan is easier to produce as a formulation than other types of carrageenan and can form a firm gel.

The above iota carrageenan, when used alone, forms a less dense texture than kappa carrageenan, which causes a weak gel; however, when mixed with the above kappa carrageenan, a synergistic effect can be obtained, preventing the water-loss phenomenon and forming a gel with high strength and elasticity.

In one embodiment, the kappa carrageenan and iota carrageenan may be present in a weight ratio of 100:80 to 120.

The above kappa carrageenan and iota carrageenan can be mixed to implement a desired physical property and can be used for the purpose of removing impurities on the skin surface including dead skin cells. However, if the mixing ratio of the kappa carrageenan and iota carrageenan is outside the above range, the intended technical effect may not be properly implemented.

Specifically, if the content of the iota-carrageenan is too low (less than 100:80), the gel may become weak, lose elasticity, and experience aggravated water loss, whereas if the content is too high (more than 100:120), the strength may increase, making it easy to break or reducing moisture content.

Meanwhile, the synthetic polymer gelling agent is introduced together with the kappa carrageenan and iota carrageenan to provide adhesiveness to the hydrogel and to efficiently adsorb skin surface impurities such as keratin.

The above synthetic polymer gelling agent refers to a large molecule formed into a chain and mesh shape through artificial bonding, and may be, for example, at least one selected from the group consisting of polyacrylate or a salt thereof, polymethacrylic acid, carboxyvinyl polymer, polyvinyl alcohol, polyacrylamide, polyethylene oxide, polyethyleneimine, polyvinylpyridolidone, PVP, methylcellulose, cellulose, carboxymethylcellulose, and hydroxy ether cellulose, but is not limited thereto.

Meanwhile, the hydrogel composition for removing dead skin cells can effectively adsorb dead skin cells through the action of the natural polymer gelling agent and the synthetic polymer gelling agent, and may include a small amount of an exfoliating agent to remove dead skin cells more efficiently.

The above exfoliating agent may be selected from the group consisting of, but not limited to, one or more of lactic acid, citric acid, glycolic acid, gluconolactone, malic acid, tartaric acid, salicylic acid, lactobionic acid, and capryloyl salicylic acid, and the exfoliating agent may be appropriately selected by considering the characteristics of each ingredient.

Although the above exfoliating agent has an exfoliating effect, its use may be limited due to skin irritation. However, the hydrogel composition for exfoliation can maximize the exfoliating efficiency due to the adsorption properties of the gel even when it contains a small amount of the exfoliating agent.

The above hydrogel composition for exfoliation may contain 0.1 to 0.5 wt% of the exfoliating agent relative to the total weight.

If the content of the exfoliating agent is less than 0.1 wt%, the effect of introducing the exfoliating agent may not be sufficiently realized, and if it exceeds 0.5 wt%, the usability may be reduced due to skin irritation.

In one embodiment, the exfoliating agent may comprise gluconolactone and lactobionic acid.

The above gluconolactone is a PHA (Poly Hydroxy Acid) and is one of the water-soluble exfoliating ingredients. Since the gluconolactone has a large molecular structure, it does not penetrate the skin quickly and thus has relatively little irritation, so it gently removes dead skin cells and helps maintain a smooth skin texture. It also effectively increases moisture retention for sensitive skin and provides a conditioning effect that acts as a skin barrier.

The above-mentioned lactobionic acid has excellent moisture retention capacity, and lactobionic acid, which is created by the oxidation of lactose (milk sugar), helps with wound healing, improves skin texture, and can have pore management, soothing, and exfoliating effects.

The above hydrogel composition for exfoliation works together with gluconolactone and lactobionic acid to minimize skin irritation while maximizing skin moisturizing and exfoliation effects.

The hydrogel composition for removing dead skin cells may include 100 parts by weight of the natural polymer gelling agent; and 50 to 150 parts by weight of the synthetic polymer gelling agent.

The above hydrogel composition for removing dead skin cells can realize excellent adhesiveness and usability by including the natural polymer gelling agent and the synthetic polymer gelling agent, and can be used for the purpose of removing dead skin cells. However, if the mixing ratio of the natural polymer gelling agent and the synthetic polymer gelling agent is outside the above range, the intended technical effect may not be properly realized.

Specifically, if the content of the synthetic polymer gelling agent is too low (less than 100:50), the adhesiveness may be reduced and the keratin adsorption effect may be insufficient, and if it is too high (more than 100:150), the moisture content may be reduced and skin irritation may increase due to excessive adhesiveness.

The above hydrogel composition for exfoliation may further include one or more natural extracts selected from the group consisting of pine needle extract, Machihyeon extract, and Phellodendron amurense extract.

The above hydrogel composition for exfoliation may further include a natural extract to enhance the effect of exfoliation and minimize skin irritation, thereby simultaneously achieving various effects such as skin moisturizing and wrinkle improvement.

The pine needles mentioned above are the leaves of a pine tree, and the apieugic acid, terpene, pycnogenol, vitamin C, and other components contained in the pine needles are known to help expel and detoxify nicotine, and have anti-inflammation, antibacterial, antioxidant effects, improve anemia, prevent vascular diseases, relieve fatigue, improve immunity, and prevent gastrointestinal diseases.

The above-mentioned Machihyeon refers to the whole plant of Portulaca oleracea L. of the Purslane family. The above-mentioned Machihyeon is named because the shape of the leaf resembles a horse's tooth and the smooth nature of the medicinal herb is similar to that of Amaranth. The above-mentioned Machihyeon has antipyretic, detoxifying, and hemostatic effects, so it is used for bacterial dysentery, boils, hemorrhoids, cervical lymphadenitis, eczema, diarrhea, uterine bleeding, and urinary incontinence. Its pharmacological effects have been reported to include antibacterial effects, intestinal peristalsis due to increased uterine smooth muscle contractility, and diuretic effects.

The above “Hwangbaek” is the dried bark of the Phellodendron amurense tree, which belongs to the Rutaceae family, and is known to have blood pressure-lowering and blood clotting-promoting effects.

The above “extract” has the meaning commonly used in the art as a crude extract, but in a broad sense also includes a fraction obtained by further fractionating an extract. That is, the above extract includes not only one obtained by using an extraction solvent, but also one obtained by additionally applying a purification process thereto.

For example, fractions obtained by passing the extract through an ultrafiltration membrane having a predetermined molecular weight cut-off value, fractions obtained by various additional purification methods such as separation by various chromatographies (designed for separation by size, charge, hydrophobicity or affinity), etc. may also be included.

The hydrogel composition for exfoliation of the present invention may further include additional ingredients such as a pH regulator, a preservative, a fragrance, a surfactant, and skin-effective ingredients, as needed, and the types of the additional ingredients are not particularly limited.

The above pH adjusting agent may be selected from the group consisting of, but is not limited to, one or more of tartaric acid, urea, ammonia, ammonium phosphate, diethanolamine, dimethylethanolamine, sodium bicarbonate, sodium hydrocarbonate, triethylamine, triethanolamine, polyethyleneimine, calcium hydroxide, potassium hydroxide, glycyrrhizic acid, ascorbic acid, salicylic acid, stearic acid, amino acids, azelaic acid, tromethamine, arginine, asiatic acid, and oxalic acid.

The above preservative may be at least one selected from the group consisting of capryl glycol, p-hydroxybenzoic acid alkyl ester, benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, phenoxyethanol, paraben, pentanediol, benzoic acid, salicylic acid, dihydroacetic acid or a salt thereof, ethylhexylglycerin, 1,2-hexanediol, capryl glycol trophorone, p-oxybenzoic acid ester, 3-trifluoromethyl-4,4'-dichlorocarbavanilide, and 2,4,4'-trichloro-2-hydroxydiphenyl ether, but is not limited thereto.

The above surfactants are polyhydric alcohols including glyceryl monostearate, polyglyceryl-4 isostearate, sorbitan monostearate, and sugar ester monostearate; polyoxyethylene methylpolysiloxane copolymers including fatty acid esters such as PEG-8 dimethicone, PEG-10 dimethicone, PEG-9 methyl ether dimethicone, PEG-3 dimethicone, and PEG-11 methyl ether dimethicone; poly(oxyethylene-oxypropylene) methylpolysiloxane copolymers including PEG/PPG-20/20 butyl ether dimethicone and PEG/PPG 20/20 dimethicone; and cetyl PEG/PPG10/1-dimethicone and lauryl PEG-9 polydimethylsiloxyethyl dimethicone. The copolymer may be at least one selected from the group consisting of alkyl chain·silicone chain branched poly(oxyethylene·oxypropylene) methylpolysiloxane copolymers, but is not limited thereto.

The above skin effective ingredients may be at least one selected from the group consisting of, for example, arbutin, niacinamide, vitamin C, vitamin B5, vitamin E, retinol, coenzyme Q10, adenosine, and natural extracts, but are not limited thereto.

The above hydrogel composition for exfoliation can be manufactured in various shapes, sizes, and thicknesses and can be used in a manner that it can be easily attached and detached to a body part such as the face. For example, it can be manufactured to have a thickness of 0.5 to 5.0 mm, but is not limited thereto.

If the above hydrogel composition is less than 0.5 mm, its usability may be reduced to some extent, such as being easily torn, and if it exceeds 5.0 mm, its manufacturing cost may increase or its usability may be reduced when attached to a body part due to its weight.

The present invention is further described through the following examples, but it is obvious that the present invention is not limited by the following examples.

Manufacturing example

Hydrogels of examples and comparative examples were prepared using the ingredients presented in Tables 1 and 2 below.

After mixing the moisturizer, crosslinker, and solvent components at a temperature of 60 to 80°C, the natural polymer gelling agent, synthetic polymer gelling agent, and other remaining additive components were added and mixed to obtain a hydrogel mixture.

This was coated on a film and then molded into a desired shape to obtain a hydrogel.

In the production of hydrogel, glycerin was used as a moisturizer and aluminum glycinate was used as a crosslinking agent.

The natural polymer gelling agent used was at least one of iota carrageenan, kappa carrageenan, agar, glucomannan, and xanthan gum, and the synthetic polymer gelling agent used was sodium polyacrylate.

In the examples and comparative examples, the differences in each component were examined by changing the presence or absence of each component or the composition ratio.

[Content (weight parts)] division Example 1 2 3 4 5 6 7 8 Purified water Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Crosslinking agent 2 2 2 2 2 2 2 2 Moisturizer 200 200 200 200 200 200 200 200 Iota Carrageenan 20 10 20 10 10 10 10 10 Kappa Carrageenan - 10 - 10 10 10 10 10 Synthetic polymer gelling agent 30 30 30 30 10 30 30 30 Lactic acid - - 1 1 1 - 1 1 Gluconolactone - - - - - 0.5 - - Lactobionic acid - - - - - 0.5 - - Pine Needle Extract - - - - - - 1.5 0.5 Michihyeon extract - - - - - - 0.5 Phellodendron extract - - - - - - - 0.5

[Content (weight parts)] division Comparative example 1 2 3 4 5 6 7 Purified water Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Crosslinking agent 2 2 2 2 2 2 2 Moisturizer 200 200 200 200 200 200 200 Iota Carrageenan - - - - 10 10 20 Kappa Carrageenan - - - - 10 10 20 Synthetic polymer gelling agent 30 30 30 30 5 50 - Lactic acid 1 1 1 1 1 1 1 Gluconolactone - - - - - - - Lactobionic acid - - - - - - - Agar 20 10 - - - - - Glucomannan - 10 10 - - - - Xanthan gum - - 10 20 - - -

Experimental example: Quality assessment

The physical property evaluation was determined by calculating the average using a 5-point scale. The experimental results of the lifting effect, skin softening effect, and exfoliation effect of the hydrogel composition were applied as numbers 1 (bad) to 5 (good), and the result values are shown in Table 3.

division Lifting effect Skin softening effect Exfoliating effect Prerequisite quality Example 1 3.5 3.2 3.1 3.2 Example 2 4.0 3.6 3.7 3.8 Example 3 3.5 3.3 3.4 3.4 Example 4 3.9 3.7 4.1 3.9 Example 5 3.7 3.7 3.8 3.7 Example 6 3.9 3.9 4.2 4.1 Example 7 3.8 4.0 4.1 4.0 Example 8 4.1 4.2 4.3 4.2 Comparative Example 1 1.7 2.1 1.8 1.9 Comparative Example 2 1.9 1.9 1.6 2.0 Comparative Example 3 2.1 2.3 1.7 2.2 Comparative Example 4 2.0 2.1 1.5 2.1 Comparative Example 5 3.1 3.4 3.2 3.2 Comparative Example 6 3.5 3.2 3.4 3.4 Comparative Example 7 1.6 2.5 1.3 1.9

Referring to Table 3, Examples 1 to 8 including at least one of iota-carrageenan and kappa-carrageenan and including a synthetic polymer gelling agent were evaluated to have significantly higher levels of lifting effect, skin softening effect, and exfoliation effect compared to Comparative Examples 1 to 4 not including iota-carrageenan and kappa-carrageenan.

In addition, in the case of Comparative Examples 5 and 6, although both iota carrageenan and kappa carrageenan were included, the overall quality was shown to be somewhat deteriorated when the content of the synthetic polymer gelling agent was insufficient or excessive.

In the case of Comparative Example 7, although both iota carrageenan and kappa carrageenan were included, since a synthetic polymer gelling agent was not included, the technical effects intended by the present invention, such as the exfoliation effect, were not realized.

In the case of Examples 1 and 3, since kappa carrageenan was not included, the quality, such as the lifting effect, was evaluated to be relatively low, but a certain level of quality was shown.

In the case of Example 6, the skin softening effect and exfoliation effect were somewhat improved by replacing the lactic acid of Example 4 with gluconolactone and lactobionic acid, so the exfoliating agent component can be changed to improve quality.

In examples 7 and 8, some natural extracts were added compared to example 4, and the skin softening effect and exfoliation effect were further improved, confirming that the natural extracts can exhibit a synergistic effect with the hydrogel component of the present invention.

The above results suggest that the hydrogel composition of the present invention can exhibit a skin exfoliation effect through a combination of iota-carrageenan, kappa-carrageenan, and a synthetic polymer gelling agent, and that the exfoliation effect is not properly implemented if some of these are not included.

In addition, a hydrogel of even better quality can be produced by changing the exfoliating agent of the hydrogel composition of the present invention or adding a natural extract showing a synergistic effect.

The above description of the present invention is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential characteristics of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single component may be implemented in a distributed manner, and likewise, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the claims set forth below, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims (8)

crosslinker;
moisturizer;
Natural polymer gelling agent comprising iota carrageenan; and
A hydrogel composition for exfoliation comprising a synthetic polymer gelling agent. In the first paragraph,
A hydrogel composition for exfoliation, wherein the natural polymer gelling agent is composed of kappa carrageenan and iota carrageenan. In the second paragraph,
A hydrogel composition for exfoliation, wherein the above kappa carrageenan and iota carrageenan are comprised in a weight ratio of 100:80 to 120. In the first paragraph,
A hydrogel composition for exfoliation, further comprising at least one exfoliating agent selected from the group consisting of lactic acid, citric acid, glycolic acid, gluconolactone, malic acid, tartaric acid, salicylic acid, lactobionic acid, and capryloyl salicylic acid. In paragraph 4,
A hydrogel composition for exfoliation, wherein the exfoliating agent comprises gluconolactone and lactobionic acid. In the first paragraph,
A hydrogel composition for removing dead skin cells, wherein the synthetic polymer gelling agent is at least one selected from the group consisting of polyacrylate or a salt thereof, polymethacrylic acid, carboxyvinyl polymer, polyvinyl alcohol, polyacrylamide, polyethylene oxide, polyethyleneimine, polyvinylpyridone, PVP, methylcellulose, cellulose, carboxymethylcellulose, and hydroxy ether cellulose. In Article 6,
A hydrogel composition for exfoliation, comprising 100 parts by weight of the natural polymer gelling agent; and 50 to 150 parts by weight of the synthetic polymer gelling agent. In paragraph 4,
A hydrogel composition for exfoliation, further comprising at least one natural extract selected from the group consisting of pine needle extract, machihyeon extract, and phellodendron extract.