Curanail is brilliant, but it costs �18 for a small bottle. However, it does last for months. It is only applied once a week. You will soon see some improvement, but it will take a year for the nail to grow completely out to a new healthy nail. Just watch out for the next toe along in case it migrates, then you would have to treat the two. It does work well, but you have to be careful to follow the instructions properly, and after all it's only once a week, so it's best to choose a time that you will remember. I decided on Saturday morning, as that was easy to remember.