Is it refillable n does it lock?
...so if it gets twisted open, it won't spill in my bag.
It does lock when you swivel the brush back to the closed position. The outer case gets messy though.
It is not designed to be refilled, but I looked at the device and it might be possible (with some effort) to pry the pieces apart and use a very small spoon to refill the reservoir. I am going to try to refill mine - when the powder runs out and IF I am not totally dissatisfied with the product design.
See my product review for more rambling.
1 year, 5 months ago