Overcharmed in Hollow Knight means you’ve equipped more charms than your available notches can normally support. The trade-off is that you gain the extra charm slot, but you take double damage from all sources while overcharmed.

How it works

  • You need at least one notch left to trigger it.
  • If you keep trying to equip a charm beyond your limit, the game eventually lets it stick.
  • A purple aura around your health bar shows that you’re overcharmed.

Why use it

  • It lets you run a stronger build with one more charm than usual.
  • It’s most useful for aggressive setups where the extra power matters more than survivability.

Main downside

  • Any hit hurts twice as much, so a 1-mask hit becomes 2 masks, and a 2-mask hit becomes 4 masks.
  • That makes it risky unless you’re very confident in dodging.

So, in simple terms: more charm power, much less safety.