The invention relates to a composition containing, preferably in a physiologically acceptable medium, at least one xanthine base or a plant extract containing it, at least one polyurethane powder, and at least one non-ionic dimethicone copolyol. The invention also relates to a cosmetic method for combating cellulite and/or “orange-peel” skin and/or slimming the figure, comprising the application of the composition to the skin. The composition applied to the skin exhibits good cosmetic properties of softness and of non-tackiness.