I have the novus 1 2 and 3 polishes and they work GREAT!!!!!! Just follow the instructions. Nothing complicated but there are some steps you need to do to get the best results. If it is a small scratch or scape you can use 2 + 1 if it is deep you need to use 3 first than 2 than 1. I use them for my acrylic overlay and the marquees i get from ebay. Great Stuf much recommended.
You can buy it from ebay $6.99 plus $2.50 shipping for 2oz bottles of 1 and 2 and a sample packet of 3.