A 27-year-old woman is evaluated for a 1-week history of an intensely pruritic rash on her eyelids. She applied a new brand of eye makeup just prior to the onset of the rash. She immediately discontinued its use and has been applying a moisturizing lotion to both eyelids since then without improvement in her symptoms. She notes no other areas of rash and generally feels well. The patient has no significant medical history and takes no medications.

On physical examination, vital signs are normal. There is erythema, mild edema, and some serous crusting over the upper eyelids bilaterally. No erythema is present on the scalp, face, neck, upper back, shoulders, arms, or fingers. The remainder of the examination is normal.

A 2-week course of which of the following is the most appropriate treatment for this patient?