acid-having the characteristics of an acid; an acid reaction. chemical science, chemistry-the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions.
Topical Steroids. One of the most commonly prescribed medications for eczema is topical corticosteroids, or just steroids, which can ease redness and reduce inflammation and itching so that your skin can begin to heal. Steroids are naturally occurring substances that our bodies make in order to regulate growth and immune function.
1 Corticosteroids: These are used to treat skin conditions including eczema. Corticosteroids come in many different forms including foams, lotions, ointments, and creams.  Retinoids: These medications (such as Retin-A and Tazorac) are gels or creams derived from vitamin A and are used to treat conditions including acne.