 It's another really good, safe paint stripper. It's not going to hurt vinyl siding, but always test it down in the corner, okay? But that color is usually baked through the product. It might remove some. There's even oxidation on vinyl siding. It might remove some of that, so it might kind of clean it up a little bit. But if you put that on, it's a lot slower acting than the old-fashioned paint strippers. Okay.