Beauties, I could really use some advise on how I can get my hair to hold a curl using Calista Tools short hot rollers. I have shoulder length baby fine, thin, straight hair. I have followed the directions, I use a styling product on clean dry hair, then I leave the rollers in for 20-30 minutes until completely cool, gently remove the rollers, style my curls with my fingers, spray with hairspray. One hour later I have no curl at all. What am I doing wrong? I have watched numerous YouTube videos regarding this. I noticed that these rollers had gotten mostly bad reviews and the Q has removed all of the reviews now. I am tempted to return my set. But would love to keep them if I could get the curl to stay in. Please help! Thanks in advance,