Toss in the wash with cold water. Air dry. Boom.
This is my fourth Rothy's
"This is my fourth Rothy's shoe purchase. I have a loafer which is wider than a pointy flat. I originally purchased a 7. 5 but brought it back for the size 8. The toe bed was much more comfortable than the smaller one. I love my Rothy's very comfortable as I'm on my feet all day walking and driving. And they look great whether I'm dressed up or dressed casually."