Melt the coconut oil and shea butter (and bee's wax if using) in a glass jar. To do this, sit the jar in a pot of boiling water--this will create a double-boiler affect. I use the same jar everytime I make deodorant because it's very hard to clean the jar after this process.
Once they have melted together, remove from heat, and stir in the baking soda, arrow root powder and tea-tree oil.
Pour the misture into silicone molds, a jar, a small container or an old deodorant stick. If using an old deodorant stick, wait a few minutes until the mixture has thickened a bit--this will make it easier to work with.
Let the mixture set for several hours or overnight before using.
Depending on how you made it, you can apply the deodorant directly to your underarm, or with your fingers. If you get some on your hands just rub it in, it's just like lotion.