[Ithica]

Hi guys!
I have a serious (ok, not life threatening! ) problem. I got my hair cut a week or so ago and I loved it. The stylist blow dryed my hair and then curled it for me and the curls stayed for about forever. Until of course i washed it

Ive managed to curl it to my liking with my GHD's but i find with about 10 mins the curls have dropped and look more wavey and not so great. Ive tried using the bed head after party serum that she used, ive also used a bedhead spray to help hold but nothing works

should i be using rollers? or maybe curling tongs? / how do they really work? / will it damage my hair sleeping with them in? ...any idea where im going wrong? Im tired of straightening my hair alllll the time! sorry its so long!