For eczema, a common treatment is a cortisone cream with hydrocortisone 0.5% or 1%. These can be found in pharmacies without a prescription and should be applied twice a day. Typically, the eczema patch will heal in about 5 to 7 days. To prevent eczema, it is recommended to use a good moisturizing cream after showering. Well-hydrated skin is less likely to develop eczema patches.