I have Seborrheic Dermatitis since very long and still it didn't went. I have consulted doctor in my city and took medicine according to it. Everything was alright but the skin around nose crease was still same. However itchiness gone there but whenever I have bath, the nose crease skin gets white. Then I put topmetro gel prescribed by doctor and remain in air in order to get skin normal. I also rub the skin sometimes while having bath to remove the white skin. But my skin there has become reddish black. What can I do? Which cream or moisturizer should I use? And should I continue to use topmetro gel?