COPPER-RUST F/X™ Will Give an Aged, Antiqued Look to Mild Steel in Just a Few Minutes. The Longer it is in Contact With The Steel, The Deeper The Color/s Will Become.  Additional Darker Patinas May be Added on Top of the COPPER RUST F/X™, for Various Color Effects & Variations. Now Available in a 2-Gallon & 4-Gallon Pack Discount!  And,  New!~1 Quart Concentrate Which Will Make 1 Gallon of Ready-to-Use Patina! Save $$ on Packaging & Shipping!