you could apply wax after the xtra-fine steel wool, but I find that wax changes the look, it's no longer as 'satin' after waxing. But if you don't apply something it will corrode easily since there's no (thick) anodizing to protect it. I've had good results using a low-gloss version of a product called Everbrite, which is some mysterious snakeoily stuff you have to buy from a private seller (sort of like Amway, Amsoil,etc.) and it appears to be a nylon resin liquid clearcoat you can apply with a sponge, rag, brush or spray (and you HAVE to wear gloves and a respirator with this stuff). I've had it come out almost as nice as a pearl-anodized finish (sometimes), but YRMV. I should do it again and take pics this time.