Unfortunately my beautiful trailer was sanded

, there are now scratches from the sanding (not deep, but noticeable) along the whole thing. Oxidization has started. I have found a product to seal the aluminium so oxygen can not react with the surface but I need something that will blend the scratches enough for it to look pretty again. My husband and I are at our wits end. We've tried everything from paint polishing buffer wheels to turtle wax to dish soap and vinegar. Nothing helps. I wouldn't be so concerned if they were uniform, but they are very patchy and in direct light it looks almost like minor road rash. Any help and ideas would be appreciated.