Actuation unit for plural aerosol cans has a cover, a first button partially guided by the cover for pushing a first aerosol vent of a first aerosol can, a second button partially guided by the cover for pushing a second aerosol vent of a second aerosol can, wherein the first button and the second button are adjacent to each other, and a connection unit connected to the cover, the connection unit comprising a first upper clip for clamping a head part of the first aerosol can, a second upper clip for clamping a head part of the second aerosol can, a first lower clip for clamping a body part of the first aerosol can and a second lower clip for clamping a body part of the second aerosol can, the connection unit adapted for covering only an upper part of the first aerosol can and the second aerosol can.