I’ve noticed that the Nivea roll-on deodorants I’m using are pretty easy to open after used up, but haven’t found any refill fluid on the market.
I know some people use powders etc, I’m not willing to try that, but does anyone know of a reasonably priced refill?
Well you’ll need an aluminium compound to do that afaik. Also the health concern seems to not be backed up by studies. You’d have to figure out where to buy it and how to handle it.