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How to Use Lead Lists for Facebook Custom Audiences

7/8/2026 5 min read
How to Use Lead Lists for Facebook Custom Audiences

Moving Beyond Interest-Based Targeting

Facebook's interest-based targeting is often too broad for B2B. To see real ROI, you need to use Custom Audiences. By uploading your curated B2B lead lists, you can show your ads only to the specific companies you have already vetted.

Creating Your Custom Audience

  1. Clean Your Data: Ensure your email and phone number columns are formatted correctly.
  2. Hash Your Data: Facebook requires hashed data for privacy. ReachScraper handles the formatting to make this seamless.
  3. Upload and Match: Upload the file to Facebook Business Manager.

Building Lookalike Audiences

Once you have a Custom Audience, create a Lookalike Audience. This tells Facebook to find users with similar professional profiles and behaviors to your existing prospects, effectively expanding your reach while maintaining high relevance.

See Where to Focus — Before Your Competitors Do

Run your first market audit free and see the gaps, timing, and margin dashboards the moment you open the app.