If you use a fountain pen you need ReDuRan.
Before I discovered ReDuRan I was using dishwasher detergent powder to remove fountain pen ink from my hands. Using a powder to clean your hands can be cumbersome and messy. ReDuRan is a product specifically designed for getting ink and dye off of your hands. The cleanser actually feels very gritty like dry dishwasher detergent but in a cream form. To use you simply apply a small amount (I usually use a pea sized amount) and rub the affected areas without water. Next, add a little bit of water and rub some more, rinse thoroughly and marvel in your new ink free hands.