Um, yes, but it's better to use crystal, it's not harmful to the skin and lasts a long time.
What crystal exactly? Could you be more specific. Guess what showed up when i Googled "
crystal deodorant", it's similar to the factory-made product packaged in fancy bottle I stopped using months ago. I really prefer it in its natural form and it should be fairly easy to obtain locally.
For now, I'll stick to the tree sap and some aloe vera...
They both meet my standard. Besides, both are from living things and can be replicated in lots of places, especially at home.