If you leave it in the refrigerator it will act like regular stick deodorant, if you have it at room temperature it crumbles a bit and you have to put it on my hand. I found this easiest anyway; take an amount around 1/2 tsp and hold on armpit until the Shea butter melts a little then you can rub it clear into the skin. I found this deodorant worked really well with or without essential oils. Just be careful of which ones you use, on my first try I used eucalyptus EO and it gave me a rash.
6 Tbls Shea Butter
1/4 cup baking soda
1/4 cup arrowroot flour
Essential oils (optional)
Melt the Shea butter in a small sauce pan or stainless steel bowl over a low heat until completely melted.
Whisk in the other ingredients and pour immediately into desired container and place in refrigerator for an hour to set.