"When you create a Lookalike Audience, you choose a source audience (a Custom Audience created with information pulled from your pixel, mobile app, or fans of your Page). Facebook identifies the common qualities of the people in it (for example, demographic information or interests). Then, they deliver your ad to an audience of people who are similar to (or "look like") them."

Find new customers, or people who have visited a specific page or taken a desired action on your website.

Set up automatic bidding to reach people who are more likely to take an action you care about, like making a purchase.

Better understand the impact of your ads by measuring what happened as a direct result.

Don't waste time on campaigns on Facebook or Instagram that aren't targeted. Show ads to the right people at the right time to grow conversions!