How can I change a public folder back to private?

All of your photos are private by default.

You may have made a folder public and have now decided to change it back to private.

To change a public folder back to private:

In Manage, mouse over a folder under “My Folders” to display the drop-down arrow.
Click the drop-down arrow and select Make private.
The overlay icon for your folder will display a lock. This folder is now private and only you can see it.

An example of a private folder followed by a public folder:

All files in a folder share the same privacy setting. You cannot set a different privacy setting for an individual file. To make a file public, make the folder public, or move it to a public folder.