Hmmm, I'm trying to remember, mine was a while ago but I don't think I put anything on it? Just keeping it clean & dry was the main thing.
I washed it in the shower as you usually would - I was a bit nervous about that but obviously I was very gentle & it was fine - then when I got out, made sure I dried it well. The other thing to do if you can is when you do get out, sit or lie for a bit with it uncovered so it really gets a chance to dry out before you get dressed.
I actually had more issues with mine because I did too much in the first few days - those painkillers were so good, I 'forgot' I was supposed to be taking it kind of easy! (We landed back in hosp with DS2 for a different reason & the mid told me the weeping I had was down to doing too much).

HTH good luck I'm sure you'll be fine