Cheating expert bosses
It probably does (I haven't tested). Here's why I think that:
- The blue slimes are to maximize invincibility frames. In expert mode they get stronger in hardmode and post-plantera, so you do need better armor for it to work.
- If you do this with an ironskin potion and a regeneration potion should make you practically invincible to the slimes, with a campfire, lantern, heart statue, and honey. Yeah. It should work.