Abstract: A closure cap for a detergent bottle, the closure cap including at least one cap wall having a plurality of surface elements spaced apart from one another. The surface elements each have a circumferential edge, starting from which the particular surface element extends from a datum plane of the cap wall, and which surrounds a base of the surface element located in the datum plane of the cap wall. In order to form a smooth transition from the datum plane that does not have a notch effect, a radius of curvature is provided at the circumferential edge that is larger than the largest longitudinal extent of the base of the surface element.