how does everyone use it? I tried it last night and it removed about 50% of the hair on my shoulders and arms. it seems anything thicker than "peach fuzz" stayed. The directions say "rinse with a washcloth don't rub, and don't use soap". I put it on and then waited about 10 min and hopped in the shower and wiped a washcloth over my shoulders and arms and then showerd with soap. Is that bad? My skin felt funny all night now today it feels better, how long do I have to wait to do it again, and how long can I leave it on before something bad happens?