Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I love this thing!

I only trust 2 people to cut my hair, me or my mother! So, since I'm a little too old to hassle mom for a haircut I decided to splurge on this system, and it works great. You have to read the instructions carefully to figure it out (simple instructions), but once you get the lengtheners set (actually, stacked) correctly and you bounce this thing through your hair with your vacuum, it truly does give a perfect cut. The lengtheners that I mentioned are clear plastic, so you can see this thing cutting your hair in a perfectly straight line. Just a note, as stated in the instructions you have to "bounce" it through your hair when cutting, you can't just run it through. If you have a powerful enough vacuum WITH A HOSE ATTACHMENT, and you are a "do-it-yourself(er), this is a long term moneysaver!