Occlusive therapy is highly effective. Apply the topical steroids mentioned above under subacute eczema and cover with a plastic wrap such as Saran wrap. The plastic dressing does not have to be airtight. Secure the dressing with tape on either end. A sock will hold the plastic dressing against a foot. The dressing may stay on for 2 hours or overnight. Remove the dressing and apply an emollient or more medication. It is not necessary to wash the skin each time a plastic dressing is applied. The appearance of pustules indicates a secondary infection. Stop treatment and prescribe topical or oral antibiotics for this side effect of occlusive therapy.