Botox not only relaxes dynamic muscles, it can also block neural signals in the sweat glands, thereby controlling the amount of sweat that's excreted. If you are being treated for forehead wrinkles, the Botox you receive will probably have a suppressive effect on sweat, too. You can also opt to be treated just for sweating; your board-certified dermatologist will then inject the Botox into the skin in a more dilute concentration rather than directly into the muscle. You may still experience a slight relaxation of the brow muscle. Either way, please consult a board-certified dermatologist who has expert Botox injection technique about how you can benefit from Botox.