I am really pleased I found this out today. A great way to upcycle your roll on deodorant!
When you have used all the deodorant, get a butter knife and pop off the ball. Clean inside the container. Then fill with a mix of paint and a bit of water. Pop the ball back on then you have made your own roll paint.
This is great if you do not want the kids to get in too much mess painting. I am collecting my containers from now on!!