i used this on my slingerland blue satin flame

http://accessories.musiciansfriend.com/product/Dunlop-Formula-65-Polish-Cleaner?sku=425260&src=3WFRWXX&ZYXSEM=0&CAWELAID=26028845

its not too waxy, barely leaves any residue. just happened to have it.

my shells were not quite as dirty as some of the ones ive seen on here.