I’m using Kūshe to clean my collection of silver coins and it does that without affecting the metal in any way which can destroy the value of the coin. Never seen anything work so great! It removes decades of grease and grime without hurting the metal. Other cleaners actually change the color of the silver. Kūshe just targets grease and grime and I can tell you that it’s the best I’ve ever used – A+.
-David H