What Is a Facebook Lookalike Audience?

SellToStrangers™
4 days ago
4 min read

https://youtu.be/EO4-Q7-e42I?si=XKEr5GmLnJRbaSs1

One of the biggest challenges with Facebook Ads isn't creating the advertisement itself.

It's figuring out who should see it.

You could manually target people based on their interests, demographics and behaviours. But once your business has collected some customer data, Facebook gives you another powerful option:

Lookalike Audiences.

A Facebook Lookalike Audience helps you reach new people who share similarities with an audience you already have.

Instead of telling Facebook:

"Find people interested in digital marketing."

You're essentially telling Facebook:

"Here are the people who already buy from me. Find me more people like them."

That's a very different way of approaching Facebook Ads targeting.

How Facebook Lookalike Audiences Work

First, you give Meta a source audience.

This could come from people such as:

Existing customers
Website visitors
People who completed a purchase
Leads you've generated
People who engaged with your Facebook or Instagram content
People from an uploaded customer list

Facebook can then use that audience as a reference when finding new potential customers.

The important distinction is that your Lookalike Audience isn't simply another retargeting audience.

Retargeting goes after people who already know you.

Lookalike targeting helps you find new people.

That's what makes it useful for growing beyond your existing customer base.

Why Lookalike Audiences Can Be So Powerful

Imagine you've generated your first 500 customers.

Those customers may have certain things in common that aren't obvious to you.

There could be similarities in their interests, online behaviour, demographic characteristics or the types of content and businesses they interact with.

Trying to identify every one of those signals manually would be incredibly difficult.

Facebook's advertising system can use the data available to it to identify patterns and help find more people who resemble your source audience.

This turns something extremely valuable to your business—your existing customer data—into a tool for finding your next customers.

Not All Lookalike Audiences Are Equal

Here's where advertisers often make a mistake.

The quality of your Lookalike Audience depends heavily on the quality of the audience you start with.

Let's say you're running an ecommerce business.

You could create a Lookalike Audience based on:

All website visitors

That's useful.

But you could potentially create one based on:

Customers who purchased

That's an even stronger signal of what you're actually trying to achieve.

You could take this even further by creating audiences around higher-value customers, qualified leads or other meaningful actions.

Think about it this way:

If you asked someone to find you more customers, who would you rather show them as an example?

Someone who visited your website for five seconds?

Or someone who actually took out their wallet and purchased?

Your source matters.

Lookalike Audiences vs Interest Targeting

Interest targeting starts with an assumption.

You might think:

"My customers probably like Shopify."

So you target Shopify.

Or:

"My customers are entrepreneurs."

So you target entrepreneurship-related interests.

There's nothing inherently wrong with that approach.

But you're still making an educated guess.

Lookalike Audiences reverse the process.

Instead of defining what you think your ideal customer looks like, you give Facebook examples of actual people who have already demonstrated the behaviour you care about.

This is why Lookalike Audiences can become particularly interesting once your business starts collecting meaningful data.

Lookalike Audiences in the Advantage+ Era

Facebook Ads has changed considerably over the years.

Meta now relies much more heavily on machine learning and Advantage+ Audience to help advertisers discover potential customers.

That doesn't necessarily mean Lookalike Audiences have become useless.

It means advertisers should think about them differently.

Rather than obsessing over creating dozens of tiny audiences and trying to control every targeting variable, a Lookalike Audience can provide Meta with another useful signal about what a good customer looks like.

Your job increasingly becomes giving the advertising system better information.

That means:

Better conversion tracking.

Better customer data.

Better creatives.

Better offers.

And better signals about the people who actually generate revenue for your business.

What Lookalike Percentage Should You Use?

When creating Lookalike Audiences, you'll generally encounter different audience-size percentages.

A smaller percentage represents an audience that more closely resembles your original source, while increasing the percentage creates a broader potential audience.

There isn't one magical percentage that works for every business.

You can test different audience sizes and compare their results.

But don't overcomplicate things.

The goal isn't to discover the world's most perfect targeting configuration.

The goal is to find a setup that consistently produces customers at a cost your business can afford.

That brings us to something much more important.

Targeting Alone Won't Make Your Facebook Ads Profitable

This is one of the biggest lessons I want advertisers to understand.

You can have an incredible Lookalike Audience and still lose money.

Because Facebook Ads performance isn't determined by targeting alone.

You still need an advertisement that makes someone stop scrolling.

You need an offer that makes them interested.

You need a landing page that convinces them.

And you need the numbers behind the campaign to make sense.

Think of it as a journey:

Audience → Advertisement → Landing Page → Conversion

If one part of that journey breaks, your campaign can struggle.

That's why learning Facebook Ads shouldn't simply mean learning which buttons to click inside Ads Manager.

You need to understand the entire system.

Watch: How to Create Lookalike Audiences for Facebook Ads

In the video above, I break down Facebook Lookalike Audiences and how advertisers can use them to reach more potential customers.

If you're completely new to Facebook Ads, understanding concepts like Lookalike Audiences will also make Ads Manager much less intimidating.

Once you understand why each audience exists, the settings suddenly start making much more sense.

Learn Facebook Ads Step-by-Step

If you're trying to use Facebook Ads to grow your business, don't stop at learning Lookalike Audiences.

Learn how the entire process works—from setting up campaigns and choosing your audience to creating ads, retargeting visitors and understanding whether your campaigns are actually profitable.

That's exactly what we teach inside SellToStrangers™ Facebook Ads Mastery.