Dull Razor

"I feel numb..."
Entity ID	5.100.486
Recharge Time	2 rooms
Item Pool	Shop Shop
Collection Grid	(page 5, column 1, row 1) (page 5, column 2, row 1)
Unlock Method	Defeat Delirium as Eve

Dull Razor is an unlockable activated item added in The Binding of Isaac: Afterbirth †.

Effect

• Hurts Isaac without taking away health, activating any items that trigger upon taking damage.

Notes

• As using the Dull Razor will grant invincibility frames like normal damage, this item can be used to enter Curse Rooms ( or use Blood Donation Machines and Devil Beggars) for free.

Interactions

For a full list of items that work with Dull Razor, see the list of damage triggered items. Note that any specific extra conditions the items may have for their activation still apply.

• Blanket / Holy Mantle / Wooden Cross: Absorbs the "hit", wasting both items.
  • Dull Razor ignores the shield, giving its normal effect without wasting the shield.
• Bloody Lust / Bloody Gust: Especially useful, as all of the stat ups are permanent for the floor.
• Car Battery: Dull Razor activates twice, but "damage" is only dealt once, not triggering synergies a second time.
  • Dull Razor activates twice, triggering synergies a second time.
• Cone Head: Can block the "hit" Dull Razor inflicts, causing no effect.
• Crown of Light: Disables Crown of Light for the current room.
• Habit: Doesn't charge Dull Razor itself.
  • Habit + Schoolbag: The secondary item will be charged.
  • Habit + Car Battery: The second activation causes Habit to charge Dull Razor.
• Isaac's Heart: Completely nullifies the effect of Dull Razor.
• The Lost / Tainted Jacob / Tainted Lost: "Damage" taken from Dull Razor causes no actual harm, allowing full use of the Razor. This is one of the only ways to see the "hurt" animation from these characters.
  • A character temporarily turned into The Lost by touching a White Fire Place will die from Dull Razor's damage.
• Purity: Will cancel the current effect of Purity, akin to taking regular damage. Useful for if you want to roll for a different, better effect, but can also get rid of the one you want.

Trivia

• The item works almost identically to the Voodoo Pin in Antibirth.

Bugs

Bug!	Habit will charge Dull Razor if Isaac has The Battery.

Bug!	Dull Razor will kill Isaac in the Mirrored World.