Washing up liquid!
Seriously. It’s a de-greasant so cuts through it. Put a tiny drop on a wet wipe and rub in a cicular motion, stop if it gets red/sore and wipe clean with a wet cloth or towel, be careful not to get it near your incsions, it will take a couple of goes to get it of but it does work.
Took me days to get it off!
Hope this helps.
x