I use 1 part baking soda, 1 part cornstarch and 1/5 part bentonite. I find arrow root goopy and clumpy. Love the experimenting for sure! And, especially love having a deodorant i am 100% confident using. I was using regular store soda & starch but realised the soda is chemically made and is high in metals, and corn is gmo so I switched to "health food" store brands to get non-gmo cornstarch & naturally occurring soda for a higher quality product. It's all about those ingredients ❤❤❤