Cosalic-K Solution is a combination of two medicines that effectively treat dandruff. It kills the fungi that cause the infection and relieves itching and irritation. It also removes dead skin cells from the scalp. Cosalic-K Solution is only meant for external use and should be used as advised by your doctor. A thin layer of the medicine should be applied only to the affected areas of the skin with clean and dry hands. Wash your hands before and after application of the medicine. If it gets into your eyes, nose, or mouth rinse with water. It may take several days to weeks for your symptoms to improve, but you should keep using this medicine regularly. The course of the treatment should be completed to ensure better efficacy of the medicine. This medicine is usually safe, however, it may cause burning, irritation, itching, and redness at the application site. These side effects are usually mild and self-limiting. Serious side effects are rare. It is not likely that other medicines you take by mouth or injection will affect the way this medicine works, but talk to your doctor before using it if you have recently used another medicine for the dandruff. The medicine is not recommended for pregnant women. Pregnant and breastfeeding mothers should consult their doctors before using this medicine.