Abstract: A hydrogel composition includes 0.1 to 10 wt % of a cross-linking agent, 0.2 to 6 wt % of a gelling polymer, 0.5 to 20 wt % of a polyhydric alcohol, and 70 to 90 wt % of purified water to maintain a form without a supporter, be stable without fluidization even when a hydrogel is immersed in cosmetics or pharmaceuticals, and allow the cosmetics or the pharmaceuticals to be uniformly delivered to skin.

Abstract: There is provided an oil-in-water type organogel cosmetic composition having variable transparency, including 0.05% by weight to 50.00% by weight of an oil phase portion, and 50% by weight to 99.95% by weight of a water phase portion on the basis of total weight, wherein the oil phase portion and the water phase portion has a difference in refractive indices within a range of 0.03 to 0.16. The organogel cosmetic composition may be usefully utilized because the composition not only has high formulation stability according to temperature and time, but also enables an optimal application time to be easily determined with the naked eye by controlling the contents of components contained in the water phase portion and the oil phase portion in such a manner that the color of the composition may be changed from opaque ivory white color to transparent color when the composition is applied to skin.

Abstract: The present invention relates to a sticky hydrogel cosmetic composition. According to the present invention, the sticky hydrogel cosmetic composition containing 0.1 to 1 wt % of sodium polyacrylate having an Na substitution degree of at least 50% as a hydrophilic polymer forms hydrogel containing a sufficient amount of a sticky mucilaginous substance while having excellent stability in formulation. Therefore, the present invention has excellent adhesiveness when applied to the skin, thereby allowing the absorption of moisture and ingredients into the skin to be maximized. Thus, the present invention can be widely used for the development of various cosmetics such as a mask pack.

Abstract: The present invention relates to an emulsified hydrogel composition and to a production method therefor, wherein, by incorporating between 20 and 30 percent by weight of a gelling solution and an emulsion obtained by mixing between 45 and 60 percent by weight of an aqueous component and between 15 and 30 percent by weight of an oil component, it is possible to simultaneously provide the skin with an aqueous fraction and an oil fraction, and it is possible to enhance functionality due to the inclusion of a high content of a dermatologically active component dissolved in the oil component.

Abstract: A hydrogel composition includes 0.1 to 10 wt % of a cross-linking agent, 0.2 to 6 wt % of a gelling polymer, 0.5 to 20 wt % of a polyhydric alcohol, and 70 to 90 wt % of purified water to maintain a form without a supporter, be stable without fluidization even when a hydrogel is immersed in cosmetics or pharmaceuticals, and allow the cosmetics or the pharmaceuticals to be uniformly delivered to skin.

Abstract: The object of this invention is to provide a temperature-sensitive state-changing hydrogel composition and a method of producing the same. The hydrogel composition includes 1-10 wt % of branched gelation polymer, 0.5 5 wt % of electrolyte gelation polymer, 0.5-5 wt % of skin-communication enhancer, 1-10 wt % of natural biomaterial, 3-30 wt % of polyhydric alcohol, 1-10 wt % of functional additive, and 30-93 wt % of water based on a total weight of the composition. Hydrogel is transformed into a fluid state at 10-50° C. The hydrogel composition is transformed into a fluid state due to body temperature when it comes into contact with the skin to be fluidized, so that cosmetics or drugs contained in hydrogel are uniformly and quickly delivered into the skin.

Abstract: A dissolvable nano web porous film has a network structure and a large specific surface area. The network structure is formed by stacking nano fibers that have a thickness of 10˜50,000 nm. The nano fibers are formed of a composition comprising nano fiber forming polymer, a gelling agent, a plasticizer, an optional active component and an optional additive. A method of preparing a dissolvable nano web film comprises producing a polymer melt or solution formed of a composition that comprises a nano fiber forming polymer, a gelling agent, a plasticizer, an optional active component and additives, spinning the melt or solution to form a nano web porous film having nano webs stacked in a network structure, drying the nano web porous film, and stabilizing the nano web porous film. The porous film has a 5˜5000 times higher specific surface area and a 2˜20 times faster dissolving time than a conventional film. The dissolvable nano web porous film has excellent dissolvability and solubility.

Abstract: Provided are a new pH-sensitive co-polymer prepared from polyethylene oxide and a method of preparing the same. The polyethylene oxide co-polymer includes repeating units expressed by the Chemical Formulas 1 and 2, and further includes at least one of repeating units expressed by the Chemical Formulas 3 through 6.