Phototherapy or light treatment is an effective treatment for eczema. With phototherapy, various wavelengths of sunlight (UVB, UVA, combined UVA/UVB, UVA1, or narrow-band) are administered in a unit that is similar to a telephone booth but which is lined by fluorescent appearing light bulbs. The type of phototherapy that you will receive will be determined by your dermatologist. It is usually administered twice weekly. Possible side effects of phototherapy are redness, sunburn, or dryness. Long-term side effects, which are more likely with white skin, are possible skin cancers and enhanced aging.
You can buy some topical corticosteroids "over-the-counter" without a prescription. For example, for dermatitis, you can buy the steroid cream called hydrocortisone 1% from your pharmacy. Do not apply this to your face unless your doctor has told you to do so. This is because it may trigger a skin condition affecting the face ( acne or rosacea. ) Long-term use may also damage the skin. On your face this would be more noticeable than the rest of your body. So usually only weak steroids are used on the face. Those which are suitable are prescription-only.