Here you can create audiences based on the following credentials: 

All of these audiences can also be defined by time frame, which allows you to create tighter audiences of more recent prospects and larger segments of those who visited your website as far back as 180 days ago. 

2. Segmenting your Facebook audience 

With all of the custom audiences available to you through the Ads Manager, choosing which segments to target has a lot to do with the type of product you sell and your customers’ typical buying behavior. 

For businesses that sell impulse-purchase products that are lower cost, you may not need to retarget people further back than 30 days.