Abstract:
PURPOSE: A composition containing octyl salicylate or phenylbenaimidazole sulfonic acid is provided to effectively block UVC and UVB. CONSTITUTION: A composition for blocking UVC contains one or more selected from the group consisting of octyl salicylate or phenylbenzimidazole sulfonic acid as an active ingredient. The composition is used in the form of solution, suspension, emulsion, paste, gel, cream, lotion, powder, soap, surfactant-containing cleansing, oil, foundation, oil-in-water, or water-in-oil. The maximum absorbance is in the wavelength of 200-290 nm.
Abstract:
PURPOSE: A composition containing an oligonucleotide or mimic acting as an inhibitor of miRNA-526b is provided to control collagen generation and to prevent or treat aging. CONSTITUTION: A composition for controlling collagen contains 15-23 serial nucleotides of sequence number 1. The collagen is controlled by regulating the expression of matrix metalloproteinase 1(MMP1). The oligonucleotide reduces or suppresses the expression of MMP1 by hybridization with MMP1 mRNA. The composition is used for anti-aging.
Abstract:
PURPOSE: A method for screening a material which relieves skin irritation by environmental harmful factor is provided to manufacture an external use formulation and to detoxify. CONSTITUTION: A method for screening a material which relieves skin irritation by environmental harmful factor comprises: a step of treating candidates which regulates intracellular factor in vitro; a step of treating the environmental harmful factor to test cells to induce overexpression of the factor; and a step of measuring expression level. The test cells are keratinocytes. The environmental harmful factor is pollen or yellow sand. The overexpressed factor is interleukin 6 or 8, GSTT1, NQ01, or hBD3. The screened material is Melia azedarach L. var. japonica Makino or Tussilago farfara L. extract.
Abstract:
PURPOSE: A method for screening a material which induces skin irritation by yellow dust is provided to reduce skin irritative factor expression and to reduce skin irritation by yellow dust. CONSTITUTION: A method for screening a material which induces skin irritation by yellow dust comprises: a step of treating yellow dust to keratinocytes; and a step of screening a gene of which expression level is significantly changed comparing with the expression of normal keratinocytes through RT-PCR. The material which induces skin irritation by yellow dust is AhR or CYP. A method for screening a material which relieves skin irritation by yellow dust comprises: a step of treating yellow dust to test cells to induce overexpression of an irritative factor; a step of treating a candidate material to the overexpressed cells; a step of measuring expression level of the irritative factor by RT-PCR. The material which relieves skin irritation by yellow dust is Trichosanthis semen. An external use skin composition for relieving skin irritation contains 0.001-1 weight% of Trichosanthis semen.
Abstract:
PURPOSE: A cosmetic composition containing polysaccharides for adsorbing heavy metal and micro dust is provided to reduce skin inflammation caused by heavy metal and micro dust, and to prevent skin trouble. CONSTITUTION: A cosmetic composition for adsorbing heavy metal and micro dust contains 0.01-20.0 weight% of Schizopyllum commune, seaweed, and ginseng polysaccharides as active ingredient. The Schizopyllum commune polysaccharide is beta-1,3-glucan. The seaweed polysaccharide is Laminaria digitata polysaccharide. A method for producing the polysaccharides comprises: a step of culturing mycelium of Schizopyllum commune, seaweed, or ginseng; a step of extracting with water to obtain water soluble fraction; a step of freeze-drying and extracting with methanol to obtain methanol insoluble fraction; a step of extracting with ethanol to obtain ethanol insoluble fraction; and a step of eluting by column chromatography.