Instruct: Classify Amazon reviews into positive or negative sentiment
Query: My Curls Didn't Last

I have long, straight, fine hair and was very excited to receive this product. I read the reviews and tips, let the curlers heat up for a long time, left them in for a long time, sprayed my roots with hairspray, etc. When I took the curlers out my hair looked great, for about 45 minutes... then I was left with a gross hair sprayed mess... what do you do then? I started the process over and heated the curlers up again, left them in a long time, took them out and they looked great, for another 45 minutes.Now I only with I could return them. I'm sure it is just my hair type since my curling iron has the same affect. I have ordered the Caruso steam curlers now as a last hope...