Corset Care Corsets should be aired laying flat, or hung by the laces over the top of a chair, with the halves of the corset on either side. You shouldn't roll a corset up for storage.
A corset should really be dry cleaned, but unfortunately cleaners who would handle corsets are few and far between unless you know of a theatrical cleaner in your area. If you must wash one do it so:
Wash the corset by hand in warm not hot water, NEVER in a washing machine, and wash in a mild powder and in a non-biological detergent, as they tend to attack the materials. They are all right for modern clothing that aren't expected to last very long, but corsets are put under a lot of stress and any deterioration will vastly shorten its life.
Rinse well in running cold water - just swish around until the water runs clear but do not wring it.
Wrap in a towel and rub gently to remove as much moisture as possible.
Dry on a frame, as you would a real wool garment, and NEVER place near a heat source like a radiator, as it can warp the steels and cause uneven drying, which will warp the garment itself.
Corsets should not be washed frequently, as the metalwork, even though it may be stainless, will exhibit some corrosion, which will eventually show. The reason that Victorian women wore a chemise under, and a cover over their corsets, was so that they didn't then need washing too frequently.