Spray degasser

So i normally use hairspray for my beds (in particular a spanish brand, the one with the blue label ;) ), in a roll-on. The first step for doing so would be emptying the can from any gas, which i did using some duct tape in the past.But what is the fun in that? so i created this contraption, which will allow you to fix it to a haispray can (only tested with thie spanish one, not sure if it will fit some others), screw either one of the two plungers (please do this with the can upside down) and leave it overnight for the gas to exit.After that, you should open the can (that i will not provide any explanation, as it might be a little bit dangerous) and they put the liquid hairspray in an empty roll on (you can use Bambu's liquid glue ones, i.e.) and use it