[NPath]

My girlfriend scratched the back side door of her 2001 Nissan Sentra XE on the garage. There are pretty significant scratches and I'm worried that it will lead to rust. Hoping to avoid taking it to a body shop, I bought Scratch Fix 2in1 to cover the scratches, but I'm wondering what I can seal it with. Is it possible? Or should I take it to a body shop?
Thanks for your help!!!

touch up paint, if you like and a good coat of wax. My wife did the same thing to the 95 Pathfinder before winter, I ended up applying touch up paint. Hasn't rusted at all.