Gel removal-which file?

Hi lovelies,
Just a quick question about nail file grits!
Last week I was trained in IBD "Just Gel" polish, and to remove them you need to file the gels to break it down, and then soak the rest off using their soak.

But I forgot to ask which grit would be most suitable to file the gel off with?

Thank you xx


My fav file is the 100/180! If its the gel polish though I would probs say s 180 file

Great, thank you! :) x