Open the Facebook app or website
Tap or click the Search bar
Select See all or Edit next to Recent searches
Tap or click Clear searches
Confirm by selecting Clear or Delete
To delete individual items, tap or click the X next to a search
On mobile, go to Menu > Settings & privacy > Settings > Activity log > Logged actions and other activity > Search history
Select the searches you want to remove
Tap or click Delete
Repeat as needed for all saved searches