Facebook Lookalike Audience
A Facebook Lookalike Audience is a method of reaching new people who are likely to be interested in your business, based on similarity to your existing customers. When you create a Lookalike Audience, (you choose a source audience with a custom audience created with a data partner, pixel data, mobile app data or fans of a Page), the common qualities (demographic information or interests) of the people in it are identified. Based off that information, then people are found who are similar or ‘look like’ them.
During the creation process, the size of a Lookalike Audience can be chosen. Smaller audiences, closely match your source audience. Creating a larger audience increases the potential reach but reduces the level of similarity between the Lookalike Audience and source audience.
A Lookalike Audience, will only include people from the country or countries you select during creation and it must contain 100 people from a single country in order to be used as the basis for a Lookalike Audience.
500 Lookalike Audience can be created from a single source audience, and multiple Lookalike Audience can be used at the same time for a single ad set, where the ad set will target your ads to people who are in any of the selected Lookalike Audiences.
You don’t have to have people from the country or countries you want to target in your source audience and people in your source audience will be excluded from your Lookalike Audience unless you use a pixel as your source audience.