A cap is provided for coupling with a pressure-resistant container to form an aerosol spray bottle. The cap includes a spray trigger for controlling a valve. The cap can have an outward slant from the cap bottom where the cap couples with the container. The top profile of the cap from a side view can have a convex shape. The cap can have a front side where the substance is expelled that is higher than the back side where the base of a user's finger would be when the user actuates the trigger with a fingertip.