Yes, Rdrops are 100% natural plastic - free, it’s safe and also easily recycled. It is self-repairing. The chromium, through a process called passivation, forms an invisible layer over the iron to protect it from air and water.
If the surface is scratched, the layer quickly rebuilds itself in the presence of oxygen. This is why 316 quality stainless steel will not rust, even if it becomes scratched.