What benefit do botox injections in the foot offer?

Sweating relief. Some people have a sweating condition that can affect the hands, feet and armpits called hyperhydrosis. Botox can decrease or eliminate this sweating for several months.
Stop sweating. Botox injections of the feet have two effects that I am aware of. One they can help reduce excessive sweating of the feet. The other though less common is to try and reduce the progression of a bunion deformity by "paralyzing" one of the muscles responsible for causing the problem.
Sweating. Some evidence, Botox injections are helpful with excessive sweating and with painful non reducible digital contractures...