I have found what appears to be a faded version of The Polaroid - as a trinket : r/bindingofisaac
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 :
Trinkets - Binding of Isaac: Rebirth Wiki
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Steam Workshop::Polaroid Negative Rework
Red Key achievement in The Binding of Isaac: Rebirth