It is a photo featuring Isaac and his parents.
- Grants the access to the Chest.
- Grants 5 seconds of invincibility (similar effect to Book of Shadows) if Isaac takes damage with 1/2 red heart remaining.
- The Polaroid is guaranteed to drop from Mom.
- If the player manages to empty the trinket pool before Mom's fight, it will not drop there.
- If the player has no heart containers, the effect is triggered every time they take damage.
- The Polaroid becomes an item in Rebirth.