A finger trigger spray cap actuator and a separable overcap for a mounting cup on an aerosol container. The actuator comprises a spray cap actuator having a base, a collar, a finger trigger support, a finger trigger hingedly connected to the trigger support by a living hinge, and a finger grip depending from the finger trigger. The spray cap actuator has an operable position in which a central passage, formed through the base, engages with an integral down tube depending from the finger trigger, and a non-operable position in which the finger trigger is pivoted away from the lower base. The overcap has an interior space and an overcap support wall defines a receiving compartment for engaging with the spray cap actuator. When the spray cap actuator is folded into the operable position, the actuator can be inserted into the receiving compartment of the overcap and releasably retained therein.