Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Product Does Not Work for Any Type of Car Scratch

After applying multiple layers of Nu Finish Scratch Doctor to several fine scratches on my Lexus IS 300, the results had no effect whatsoever. This product does not work as claimed by the manufacturer, not even for the finest hairline surface scratches. I had great expectations in this product because I have used their regular Nu Finish in lieu of regular car wax on my cars for over a decade with great success, because it lasts so much longer than regular car wax.