Milk of Magnesia
I have hyper sensitive, dry skin. The last few months I have been successfully using plain old generic Milk of Magnesia
. Yep! It is working great and I am completely odor free. First I used up some we had laying around the house, then I bought a 12 ounce, $1 bottle of Dollar Tree's generic version. It works just as well.
Most people are deficient in magnesium anyway, so any that might be absorbed would actually be of benefit to the body. I really like that there are NO potentially bad ingredients. But best of all, it works!
As to anything containing baking soda, whether homemade or ordered at great expense over the internet, if your skin is sensitive this will cause a very sore underarm rash. You can guess how I know that.
Anyway, good luck in finding a great solution!