4 ms·I used to iron my bills. Worked well for me to get crisp, fresh looking bills, both with USD and EUR.by leobg 4y agoI used to iron my bills. Worked well for me to get crisp, fresh looking bills, both with USD and EUR.dtgriscom 4y ago... starch?leobg 4y agoTried it. But the bills feel better without. Putting a damp towel below also helps.