How Long Does It Take To Unblock Someone On Facebook =link=
: Immediate. The person is removed from your blocked list the moment you confirm.
Facebook enforces a 48-hour “cooling off” period after you unblock someone. If you change your mind, you’ll need to wait two full days to block them again.
Any posts, comments, or tags from before the block will not reappear on your timeline. Unblocking only affects future interactions.
The answer is bifurcated into two distinct timeframes: