How long does the effect of Botox last after an underarm sweat injection for hyperhidrosis?

Every summer, I sweat so much in my armpits that my clothes get soaked quickly, and I am at the point where I can't even hold the handrails on buses or subways because I'm afraid of the smell. I can't use products like deodorants or Driclor because they cause severe itching, so I am currently looking into getting Botox injections in my armpits to block the sweat glands. If anyone has received sweat injection treatment for hyperhidrosis at Maypure, could you honestly tell me approximately how long the Botox effect actually keeps the armpits dry and fresh after the procedure?

I would like to know if, after receiving a proper injection from the director just once, the effects are maintained smoothly without worrying about sweat for about 4 to 5 months, which is roughly the entire summer season. I want to schedule my treatment with an accurate understanding of the Botox's longevity, and I am curious about when the effects of this Botox sweat injection begin to take effect.