It allows you to control your ad's safety features. It provides safety controls access to the marketers for their accounts. Here are some points about establishing your Facebook brand safety tools:
This feature gets you an overview of your multiple Facebook ad accounts.
It lets you whitelist for the audience network you want to target for your ads campaign.
You can filter out the pages, or apps, where you do not want your ads to appear.
It shows the list of Facebook pages, audience network apps, and in-stream videos on which your ads may appear.
You can see the exact placement of your ads where it is placed.