Boric acid solution for eczema is usually effective for about three days. Eczema is a relatively common skin disease, mainly because of the body inside and outside the adverse factors caused by boric acid is a weak acidic substances, has a certain astringent effect, the use of boric acid solution for wet compresses can relieve the eczema caused by oozing and redness, but also to a certain extent to relieve the itching. If the eczema is not particularly serious, the general wet compress about three days can be effective, if it has been transformed into a chronic eczema, about the need to wet compress about seven days. After suffering from eczema will generally appear itchy symptoms, it is best not to scratch with your hands to prevent bacterial infection, and need to keep the local skin clean and hygienic, diet also need to keep light. Eczema, it is recommended to go to the hospital to receive formal diagnosis and treatment, medication should be used as prescribed by the doctor.