Abstract: Provided is an elastic fiber treatment agent, containing; a hydrocarbon resin (A); and a hydrocarbon oil (B). The hydrocarbon resin (A) contains a polymer having a structural unit, as a main structural unit, derived from at least one monomer selected from aromatic olefin and aliphatic diolefin, the polymer being partially hydrogenated or fully hydrogenated. It is preferred that the hydrocarbon resin (A) contains a polymer having a structural unit derived from aromatic olefin as a monomer, the polymer being partially hydrogenated or fully hydrogenated, and the aromatic olefin is at least one selected from indene and methylstyrene. Thus, the elastic fiber treatment agent of the present invention imparts excellent unraveling properties to elastic fibers and has excellent adhesiveness to hot melt adhesives, enables the production of stretchable sheets exhibiting good adhesiveness even when processed at a high draft ratio, and is suitable for obtaining soft feel sanitary products.

Abstract: A treatment agent for elastic polyurethane fibers comprising a dispersion in which a higher fatty acid magnesium salt is colloidally dispersed in a silicone mixture consisting of a silicone oil with a viscosity of 5×10−6−50×10−6 m2/S at 25° C. as a dispersion medium and a dispersant mainly comprising a modified silicone at a ratio by weight of the dispersion medium/the dispersant=100/0.5-100/4.5, wherein the amount of the higher fatty acid magnesium salt is 1 to 10 parts by weight per 100 parts by weight of the silicone oil.

Abstract: A treatment agent for elastic polyurethane fibers comprising a dispersion in which a higher fatty acid magnesium salt is colloidally dispersed in a silicone mixture consisting of a silicone oil with a viscosity of 5×10−6−50×10−6 m2/S at 25° C. as a dispersion medium and a dispersant mainly comprising a modified silicone at a ratio by weight of the dispersion medium/the dispersant=100/0.5−100/4.5, wherein the amount of the higher fatty acid magnesium salt is 1 to 10 parts by weight per 100 parts by weight of the silicone oil.

Abstract: The cosmetic composition of this is an ultraviolet ray-absorbing cosmetic composition containing particles of cyclic imino ester which is excellent in ultraviolet ray absorbability, stable against water, sparingly soluble in organic solvents, fats and oils, sebum, etc., and further has only a low skin-irritating property. When this cosmetic composition is applied onto the skin, erythema is not formed on/in the skin even if it is exposed to sunlight for a long period, and further aging of the skin can be prevented.