Spread the clothing out so the foaming insulation is easy to access.
Wipe over the insulation with a clean, dry cloth. Replace the cloth with a fresh one as needed to avoid wiping the insulation back onto the clothes.
Saturate a clean cloth with acetone nail polish remover, if any of the insulation is still moist but difficult to remove.
Dab the affected area with the acetone-soaked cloth, adding more as necessary to keep the cloth from drying out.
Launder the clothing as usual.