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The present invention relates to an open-celled immersing member for a cosmetic composite and, more specifically, relates to an open-celled immersing member for a cosmetic composite, capable of improving user convenience and portability by immersing a gel or liquid type cosmetic composite in the immersing member and packaging the member in a compact container. The immersing member is made of styrene butadiene rubber. The immersing member includes a cosmetic composite. The immersing member has a hardness of 20-35 based on the Asker hardness testing machine Type F, has a density of 180-240 g/L, and a pore number of 10-150 pore per inch (ppi).COPYRIGHT KIPO 2017