There's a product called 'Label Once' that I use on all of my tins. You can write on them with a permanent marker and erase it with a standard eraser. They don't smear or wash off...it's awesome. When I empty a tin from adagio (or my local tea shop) I just peel the standard label off and add a labelonce label, then mix my own flavors and label each one. I mix teas for friends and just give them my extra tins w/ label & steeping instructions written on it.