Apparently gulping the faded Polaroid makes it unable to open the door in depths which I guess makes sense since you can't put it in the door if you swallowed it :
The Best Binding of Isaac Seeds (Repentance and Afterbirth+) | Blog of Games
The Binding Of Isaac: Rebirth - The Polaroid and The Negative AT ONCE - Quick Tricks Ep. 2 - YouTube
Steam Workshop::the polaroid (and the negative) but awesome
New Trinkets - The Binding of Isaac: Rebirth Wiki Guide - IGN
The Best Binding of Isaac Seeds (Repentance and Afterbirth+) | Blog of Games
The Polaroid (flash) | The Binding of Isaac Wiki | Fandom
The Binding of Isaac: Repentance |OT| One last run into the unknown depths below OT | Page 28 | ResetEra
Tip: You can use Faded Polaroid to save another item ;) : r/thebindingofisaac
The Binding of Isaac: Repentance - The Easiest Way to Unlock The Planetarium
The Binding of Isaac Repentance Patch Notes - Full List of New Features
The Binding of Isaac: Repentance - Final Boss Guide
Delilah - One of the Two Shapeshifters | The Binding Of Isaac Official Amino
About: Complete Guide For Binding of Isaac Rebirth (iOS App Store version) | | Apptopia
The binding of isaac afterbirth plus - mozcure
Steam Community :: Screenshot :: Positive+negative polaroid + faded polaroid. xd i'm flashed
Polaroid Desvanecida | The Binding of Isaac Wiki | Fandom
The Binding of Isaac: Repentance Tainted Characters Guide | The Binding of Isaac: Repentance
Faded Polaroid - Binding of Isaac: Rebirth Wiki
Faded Polaroid trinket : r/bindingofisaac
Mom Gives Regular Prizes: Repentance - Skymods
The 10 Best Trinkets in "The Binding of Isaac: Rebirth" - LevelSkip
The 10 Best Trinkets in "The Binding of Isaac: Rebirth" - LevelSkip
The Binding of Isaac and Escapism: A Multimodal Essay
The Binding of Isaac: Repentance Tainted Characters Guide | The Binding of Isaac: Repentance
The Binding of Isaac: Repentance |OT| One last run into the unknown depths below OT | Page 28 | ResetEra
Revenant - Modding of Isaac
