This is a product straight from heaven! It is a life saver for me because I am not the neatest painter - this easily cleans up any mistakes within a few seconds. I find it's best to use it immediately while the nail polish is still wet on the skin. The pen comes with 2 replacement heads for when one is too full of product to be as effective. What I do is keep a cotton ball soaked in nail polish remover next to me while I am painting my nails and when I make a mistake I use the pen then wipe it off on the cotton ball to keep it clean.

This pen is rather pricey (varies from R57 - R75) and after a while it does lose it's effectiveness as the pen dries out...BUT my solution for this is to fill the cap of the nail polish remover with product then simply dip the pen's tip in and use a ball of cotton to absorb the excess. If you invest time into keeping the tips clean while you work you will be able to make a pen last well.