Binding of Isaac: Rebirth Wiki
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Binding of Isaac: Rebirth Wiki

Disambig-dark.png This article is about Rubber Cement, similar in appearance to Ipecac.

Rubber Cement is an unlockable passive item.

Effects[]

  • Makes tears bounce off walls, enemies and environmental objects.
    • Tears that bounce off of enemies bounce in random directions, whereas tears that bounce off of walls and other objects bounce directly back.
    • When tears bounce from enemies, they become able to hit the same enemy again should they bounce off of another enemy or obstacle.
    • Added in Afterbirth † Tears bounce off bombs.

Synergies[]

  • Added in Afterbirth Brimstone Brimstone: The blood laser bounces off of walls, creating a second beam that deals half damage.
    • Added in Afterbirth Azazel Azazel's Brimstone laser becomes a full length laser after bouncing, but will deal half of the damage.
      • Added in Afterbirth † Azazel Azazel's Brimstone no longer becomes a full length laser after bouncing, and instead bounce as a regular mini-Brimstone.
  • A Lump of Coal A Lump of Coal: Both effects stack, with tears that bounce off of enemies being able to hit others for more damage.
  • The Parasite The Parasite: Tears will bounce off of walls without splitting, but split and bounce when hitting enemies. The split tears and the original one will bounce off everything.
  • Added in Afterbirth †Pop! Pop!: Significantly increases the uptime of tears, since they are not limited by range and each tear will bounce off of each other. Continuously firing tears will eventually create a positive feedback loop, as the tears will keep bouncing faster and faster while not dropping to the floor.
    • Pop! + A Lump of Coal A Lump of Coal: Extremely powerful combination; Lump of Coal's tear size increase will make it much easier for tears to bounce off of each other, while they increase in damage very rapidly. Given some time and enough tears, this can kill even final bosses such as Hush and Delirium quickly.
  • Added in Afterbirth Technology Technology / Technology 2 Technology 2 / Tech.5: Laser bounces off walls, creating a second beam that does half damage.
  • Added in Repentance Tech X Tech X: The laser rings bounce off walls once.

Interactions[]

  • Removed in Afterbirth Brimstone Brimstone: Overrides Rubber Cement.
  • Bob's Rotten Head Bob's Rotten Head: The bomb bounces back upon hitting an obstacle, and will not explode until it runs out of air time. Not recommended, as it can make self-damage more likely in small rooms.
  • Added in AfterbirthContinuum Continuum: Overridden by Rubber Cement; tears will still bounce off of walls and obstacles.
  • Dr. Fetus Dr. Fetus: Overrides Rubber Cement.
  • Epic Fetus Epic Fetus: Overrides Rubber Cement.
  • Added in Afterbirth † The Forgotten The Forgotten: No effect on the skeleton form's attacks.
  • Homing tears: Tears will bounce off enemies and home back in, but to deal damage to that enemy again they must bounce off a different object.
  • Ipecac Ipecac: Tears will bounce off of obstacles, but not enemies.
  • Added in Afterbirth †Jacob's Ladder Jacob's Ladder: Tears don't generate arcs when hitting obstacles.
  • Lost Contact Lost Contact: Tears will bounce off of enemy tears. Not recommended unless the player's fire rate is high, as it can prove detrimental when trying to hit a shooting enemy.
  • The Ludovico Technique The Ludovico Technique: Overrides Rubber Cement.
  • Mom's Knife Mom's Knife: Overrides Rubber Cement.
  • Piercing tears: Tears that don't destroy enemies will bounce off of them instead of going straight through them. Tears can still damage enemies such as Knights that are normally invulnerable from the front.
  • Added in Afterbirth †Sinus Infection Sinus Infection: Boogers stick to enemies, but otherwise they bounce normally.
  • Spectral tears: Overridden by Rubber Cement.
    • Added in Afterbirth † Tears pass through obstacles but bounce off walls.
  • Added in Afterbirth †Sulfuric Acid Sulfuric Acid: Overridden by Rubber Cement.
  • Removed in Afterbirth Technology Technology / Technology 2 Technology 2: Overrides Rubber Cement.
  • Tiny Planet Tiny Planet: Tears no longer fly over obstacles but instead bounce very quickly along with them, appearing to "vibrate".
    • Added in Afterbirth † Tears pass through obstacles but coast along walls, trying to maintain the circular trajectory.

Unlockable Achievements[]

In-game Footage[]

Trivia[]

  • The item's appearance is loosely based off Elmer's Glue brand Rubber Cement.

Seeds[]

PC ABW2 HYHK (Treasure Room adjacent to spawn)

PC GN8E P6N7 (Treasure Room adjacent to spawn)

PC 2XA6 GY1F (Treasure Room adjacent to spawn)

PS4 1YR9 80SA (Treasure Room adjacent to spawn)

Vita QRDH 161F (Treasure Room adjacent to spawn)

Switch Greedier mode only 9YPV NFK8 (First Golden Treasure Room)


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