Homemade deodorant

I absolutely would have never thought about making my own deodorant!  But since I am currently paying a pretty hefty price for my Jason brand Tea Tree oil deodorant, I'd love to find an cheaper homemade alternative that would work just as good.  I found this recipe on Passionate Homemaking tonight and wanted to share it.

Ingredients:

5-6 Tbsp Coconut oil
1/4 cup baking soda
1/4 cup arrowroot powder or cornstarch

Combine equal portions of baking soda & arrowroot powder. Then slowly add coconut oil and work it in with a spoon until it maintains the substance you desire. It should be about the same texture as the store bought kind, solid but able to be applied easily. You can either scoop this into your old dispensers or place in a small container with lid and apply with fingers with each use. After applying the product, you can just rub the remains into your hands as a lotion! This recipe lasts about 3 months for two people with regular daily use.

I already have all these ingredients in my pantry.  I can't wait to make up a small test batch and try it out!