i have two thin but large patches of hair on my back. i want to get them removed permanently. what is the best way to do this? i have sugared them and waxed them before but it keeps growing back. also the last two time i sugared my back broke out. so i was embaressed to take my shirt off. why did this happen when the first 3 times i ever did, it never happened. and how can i prevent it if i do it again?