I've had Botox injections for hyperhidrosis in my armpits and on my scalp. Sadly, my doctor who did these was a bit too far for me and the traffic in the area was terrible so I stopped. But... Things to expect: The needle can sting a bit in especially tender spots. I have really high pain tolerance though so it wasn't bad at all. There can be a little bit of soreness or very small amounts of bleeding afterwards. I mainly had minor bleeding on my scalp, not so much in my armpits but maybe don't wear a white/light shirt just in case? The process was pretty quick, just a bunch of small needle pricks. Wishing you luck!