The present invention provides a set of body slimming compositions, for application to a body before irradiating the body with a far-infrared ray in an atmosphere of 50° C. or thereabout. The slimming composition set includes a first external composition containing a cosmetic base, a Bacillus-fig-soybean fermented liquor, a Bacillus-Monascus-angelica-soybean fermented liquor, a Bacillus-longan-soybean fermented liquor, orizanol, tocopheryl acetate, macadamia nut oil, and glucosyl hesperidine, and a second external composition containing a cosmetic base, a Bacillus-persimmon-soybean fermented liquor, a Waltheria indica leaf extract, and ascorbyl tetrahexyldecanoate. The first external composition is applied to a lymphatic node region of the body, and the second external composition is applied to a slimming target region of the body. The composition set of the invention can activate lymph or lipase, whereby a remarkable body slimming effect can be attained.