How do I unhide my recently added friends on facebook timeline?

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You only need to edit your privacy settings,
if you are using a smart phone,
1. Tap photo at the topleft of any page
2. Scroll to the bottom of the menu
3. Tap account >privacy settings
if you are using other phones,
1. Click settings at the bottom of ever page
2. Choose account >privacy settings.
For anything you restricted or controlled on sharing among selected audience, use the dropdown to edit