I hasten to add it does hurt if your therpaist is crap and does it incorrectly! You need to pull against the direction of growth whilst stretching the skin firmly and get the client to hold down theor boob! You need to apply the wax (if it is warm wax) in the direction of hair growth. If you have excessive bruising then it has been done incorrectly. Unfirtunately with the popularity of the beauty industry now there are a vast amount of rubbish therapists out there - a bit like hairdressers.
I always repeat never be afraid to ask to see qualifications, ask about insurance etc and if you feel uncomfortable you can leave!
The best thing is to go to someone who has been recommended.
If I could afford it I would have laser on my pits but I am in desperate need of licposuction first not in the armpit area I hasten to add!