I found the recipe for this deodorant butter a couple of years ago. It was called "Kimberlily's Deodorant Butter" but today when I went to go check my old blog post about it, I found that the link to the recipe is now dead. Not to worry. I'm old school and always write things down in notebooks. The original recipe was for a very small batch. I've scaled it up.
Really Effective (aka It Actually Works) Deodorant Butter
1/2 cup baking soda
1/2 cup coconut oil (softened)
1/2 cup shea butter (softened)
1 teaspoon tea tree oil
8 teaspoons cornstarch
Place all ingredients in a mixer with a whisk attachment and whisk on high until fluffy and light. Transfer to a container and cover tightly.
I have also done this by melting all the ingredients in a double boiler but I find that mixing it with a mixer ensures that everything is well incorporated.
This is by far the best natural deodorant I have ever used but I will post a disclaimer: my hubby finds it too harsh for his armpits (either the baking soda of the tea tree oil could be the issue I think). He finds that plain coconut oil works for him. That *definitely* is not the case for me.
What is nice about making this in the summer is that butters and oils are already very soft so it's super quick to whip up.