If you have actually blocked somebody accidentally or changed your mind about the block, however, it is likewise reversible. You can change your Personal privacy settings to unblock and permit somebody back into your Facebook world.
How Can I Unblock Someone From Facebook
1. Click the down arrow beside "Account" at the top right of any page on Facebook.
2. Click "Privacy Preferences" from the Account menu.
3. Click the "Edit Your Lists" link under the Block Lists heading. It is at the bottom center of the page.
4. Click the "Unclog" link beside the name of the person you want to unblock. A list of the individuals you've blocked is discovered under the Block Users section.
Suggestion
Uncloging someone does not automatically put that individual back in your buddy list. You must add the recently unblocked individual as a good friend and await them to validate the demand.
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