Stainless Black Patina is made specifically for stainless steel. It is not recommended for other metals, but on zinc and galvanized steel, it can produce a red-brown or weathered black patina. On stainless steel, this patina will be blue grey at first and then darken as more coats are applied. Stainless Black Patina works best at full strength, but can be diluted with distilled water if desired.