Instruct: Classify Amazon reviews into positive or negative sentiment
Query: big hype

After all the hype on Oprah and after reading reviews, I was disappointed. It gives a strange sensation and is very uncomfortable to use. It almost gave me a headache. Plus, there was absolutely nothing that came out as my water ran clear. Everyone marveled at how much gunk came out but that was not the case for me. Maybe I just need to wait until I feel congested to use it again.