Looking to fight back against rust on steel surfaces? Look no further than Multilac Rust Killer! This innovative water-based product is not only effective at transforming rust into a stable and insoluble complex, but it's also an environmentally friendly choice. Simply apply it to a rusted steel surface that has been smoothed by sandpaper or wire brushing, and watch as it works its magic to create a blue-black finish that's ready for painting. And because Multilac Rust Killer is an excellent adhesion promoter for subsequent coating systems, you can be confident that your rust-free surface will stay looking great for years to come.