Use Interest Targeting to create a “Saved” audience for your Facebook Ads. Ideal audience sizes range from 1.5 Million to 5 Million. Use interests to find, narrow, and even exclude audiences to create a niche to target.
Ideally you’ll target one “interest” as a time, such as “Coffee Lovers” and find audiences related to that interest. Do not lump all interests into the same audience as that makes optimizing your audiences difficult.
For each campaign we recommend 3-5 ad-sets or audiences to test with a size of 1.5 – 5 Million people each.