If you often use Facebook and conduct several searches, you may need to know how to remove Facebook search history. While you don't need any technical knowledge to remove your Facebook search history, you must follow the procedures exactly as they are written. Take a look at the processes involved in deleting your Facebook search history. Then, click account in the upper right corner of Facebook to remove all searches. Then, under Settings and privacy, select Activity log. Below the Activity log, click Logged activities and additional activity. Select Search history from the menu. Clear searches may be found in the upper right corner. Here how to delete facebook history on iphone.