The links you posted are of a glaze. In my experience, those wont really cut to remove surface scratches. You need a compound with some grit, then use the glaze to buff the shine back.
TDR had great articles about this in this past winter issue.
If you care enough about the vehicle to touch up the rock chips on the hood, I have used this brand touch up paint with success. Then covered it with their small bottle of touch up clear coat. It's holding up sense applied over a year ago.
Touch Up Paint and repair | AutomotiveTouchup