The ornamental design for a cosmeticbottle, as shown and described.
1. Cosmetic bottle
1.1 : Perspective
1.2 : Front
1.3 : Back
1.4 : Top
1.5 : Bottom
1.6 : Left
1.7 : Right
The bottle comprises a vertically-oriented housing and a cap; the housing includes a transparent, thick-walled container, and a collar mounted on shoulders of the container, in plan, lateral sides of each of the container and the collar form a square with rounded corners; the cap is round in plan with a lateral wall that flares out near its base. The broken lines illustrate portions of the bottle and form no part of the claimed design.