Fix it is a joke. Better off with a sharpie!
Scratch X can be handy for under door handles and the like for cleaning and filling scratches temporarily - not much cut, so won't remove anything but it is heavy on the fillers. Using too much pressure will cause it to basically remove itself - it's a cleaner/filler - but the results won't be permanent so you'll need to redo as the fillers wash out. But an abrasive polish and patience will still garner better results. Good for a quick fix though.
edit. There are plenty of better cleaning and filling products available though, if you hunt around.