If there is no setting on your straightener, you can turn it on for about 30-40 seconds and then turn it off. Start right from the beginning- don't let it heat up and then use it. Start from the beginning and do quick swipes, not long ones. You roll it down the hair and the hair will smooh. When it starts to crackle and fizz it is getting too hot. Just make sure you keep it from getting too hot, and you shouldn't have a problem.