Just to add, if there are scratches that aren't too deep, elbow grease and a polishing agent like peek will do the job. This may sound odd but I've found wd40 pretty good at bringing out the shine.
If you've got some scratches that won't come out in the wash, you might need something stronger than a slightly abrasive polish initially, so some sandpaper or in my case, 3 grades of Scotchbrite will help remove all but deep scratches.
If you've got some scratches that won't come out in the wash, you might need something stronger than a slightly abrasive polish initially, so some sandpaper or in my case, 3 grades of Scotchbrite will help remove all but deep scratches.