That depends on the level of oxidization of the finish. Try a good commercial guitar polish, like Dunlop first. Use a clean t-shirt, or microfiber cloth/ towel to polish. If there's gunk buildup-
I use, Mother's Aluminum wheel polish, yes, it's NOT known as a guitar or finish cleaner, but it is THE BEST compound I have ever used in my 45 years of repairing/ finish work. Two, or three levels of Meguiars was my go to. This Mother's wheel polish, is a fine compound, that works great either with a small buffer, or by hand with clean cloths- NOT paper towels. I just use it after wet sanding a finish, and it does the work of two old compound steps, and no new scratches. I go right to standard guitar polish after that.