Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointed!

I just received and used these rollers for the 1st time and my 1st impression is that these are awful. I will give them another go and write up an update but at this point these did not work for me at all. I plan on returning them. I waited the 15 minutes before putting them in, I waited 20 minutes actually. After putting them in I waited the 15 minutes before taking them out. 1st problem was that the rollers would not stay tight in my hair. My hair is not super soft or anything, my strands of hair are thick. My hair was slipping out of the roller and I put them in tight. So when the 15 minutes was up there was no curl...at all! All that time wasted and no curl. They did not seem to get that hot. Also, they are a bit of a pain to put in and there were not enough rollers for my hair.