there are couple scratches on my car that I want to remove, so I found a product called meguiars scratch x and heard alot of good things about it. so i'm thinking of buying it soon but I heard you should apply car wax after applying the scratch x to protect the coat ? i'm wondering if applying that car wax would be necessary and what will happen if I don't wax it after? i've also heard that car wax alone can remove car scratches ? so if the car wax alone can do the trick, i'd rather just spend less money on the car wax alone opposed to the meguiars scratch x + car wax, ya know?