Mycosan Fungal Nail Treatment Set (5ml). Mycosan Fungal Nail is a complete treatment set, containing a unique serum in a user-friendly tube with brush (5ml), 10 nail files for single-use and a treatment schedule. Mycosan is proven effective and active against fungi that cause fungal nail. It is an easy and fast solution.. Treats mild to moderate forms of fungal nails. Protects surrounding nails against fungal infections. Nourishes the treated nail. Mycosan Fungal Nail is a complete treatment set, containing a unique serum in a user-friendly tube with brush (5ml), 10 nail files for single use.