Derobin Ointment belongs to a combination medication called dermatological preparations used to treat skin conditions like psoriasis and eczema. It helps to reduce swelling, itching, and redness and remove dead skin cells. Psoriasis is a chronic (long-term) skin condition in which skin cells multiply faster than normal, resulting in white scales and itchy, dry patches. Eczema is an allergic condition of the skin caused due to bacteria, viruses, or fungi.