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

The reason that I purchased this Universal Concentrator was because my current blow dryer or hair dryer (whatever you call it!), concentrator went missing. I became excited about getting this universal concentrator because I couldnt seem to find the concentrator for my type of hairdryer....I asked around about any universal concentrators and was pointed to this direction.I waited anxiously for my product to get home, and once it did I was happy to find that it did fit my hairdryer! After a couple uses (like 3 times) though I found that when I would try to straighten my hair with this concentrator attached, it would pop off and hit me on the head...With that being said I cant even put the concentrator on my hairdryer anymore because it wont stay on. I understand that its not a miracle worker, but I at least expected this to last me more than a month.