Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not as advertised

This is a very fine abrasive polish. For the time and effort involved, I saw no improvement and would suggest you go to ebay and purchase a new housing for your phone or other devise if possible. I've since ordered a new housing for my phone. I have also seen just the front part of my phone housing for sale. It may be worthwhile to get extras if you have an exposed display or alternatively use screen protector film.