Your doctor will advise the appropriate dose that suits your infection. Selsun Suspension 120 ml is for topical (for skin use) only. If the medicine gets into your eyes, nose or mouth, rinse with cold water. Selsun Suspension 120 ml has common side effects like dry scalp, skin irritation or temporary hair loss. These side effects usually do not require medical attention and gradually resolve during the treatment. If you experience any other symptoms you think may be due to Selsun Suspension 120 ml, please consult your doctor for further advice. Let your doctor know if you have any allergic reactions to Selsun Suspension 120 ml or other medications. Please check with your doctor before using Selsun Suspension 120 ml if you have any other skin infections. Selenium sulfide in Selsun Suspensio.