76 points
*
Modern soaps/detergents don’t contain lye, which is what ruins the seasoning. It’s the humid drying of a dishwasher that causes it to rust. Nothing to with the detergent.
4 points
5 points
As a mild ph adjuster, you would have to soak your cast iron in Dawn (platinum only) for hours, which would ruin your seasoning no matter the detergent used.
-1 points