We'd be lying if we said it didn't hurt at all. There is definitely a slight sting, but if you go to a reputable waxer this will be minimised with the correct technique and speed.
Hair cycles vary from person to person, so depending on how your hair grows back will determine when you're heading in for your next appointment. However, every two to four weeks after your first wax can be expected to keep things silky smooth.
Your hair should be a minimum of a quarter of an inch in length. About the length of a grain of rice. This is generally around four to six weeks worth of growth. This allows the wax to grab on the hair are remove it effectively. Otherwise, if you go in to early you will have hair left behind and if you head in any later the extra length can cause unnecessary pain.
Wear loose-fitting and comfortable clothes straight after your treatment. Also, a cold shower or cool compression will help with the slight swelling/redness. Avoid any cosmetics that are perfumed for at least 12 hours.
If you have unwanted body hair and want a longer hair-free period when compared to shaving, waxing is for you. If you're heading in for a treatment, you want to go in when the skin is settled and not irritated. A good length of hair is needed so the wax can actually pull the hair follicle out.