I have read that Botox injections can help reduce the sweating in this area.

Answer: Botox is an excellent treatment option to control excessive under arm perspiration or hyperhidrosis. It is injected more superficially than for frown lines or forehead lines. For most patients, a vial of Botox or 100 units for both underarms will be enough. It should last 6-8 months with great effectiveness.