Does anyone have any input on using mineral soap to wash instead of other soaps, etc? I've read elsewhere that basically all soaps have ingredients that dry out the paint, but mineral soap apparently does not.

Thanks in advance.

 

Mineral Soap contains two ingredients which, working together, can cause corrosion to metal surfaces: Glycerin and Sodium Chloride [Salt].
Glycerin is hydroscopic so it retains moisture. Salt mixed with water can cause corrosive action to metal surfaces. Also, it will degradate the paint by eating into it.
Mineral Soap is proper for skin treatment on humans but not best for painted Porsches.