Retargeting is the practice of showing ads specifically to people who have already interacted with your business — visited your website, watched a video, abandoned a cart, opened an email, engaged with social content. They're warmer prospects than cold audiences, so retargeting almost always outperforms prospecting on a ROAS basis.
How retargeting works
When someone visits your site, a tracking pixel (Meta Pixel, Google Tag, LinkedIn Insight Tag, TikTok Pixel) records the visit. You can then build audiences based on:
- All site visitors in the last 30/60/90 days
- Visitors to specific high-intent pages (pricing, demo, services)
- Cart abandoners
- Past purchasers (for upsell/cross-sell)
- Video viewers (25%, 50%, 75%, 95% watch milestones)
- Email subscribers
- Customer match (uploading your email list)
Where retargeting runs
- Google Display Network — ads across 2M+ websites and YouTube
- Meta (Facebook + Instagram) — native feed, stories, reels placements
- LinkedIn — for B2B retargeting; expensive but highly targeted
- YouTube — video retargeting with strong narrative formats
- TikTok — growing rapidly for visual products
- Programmatic display — via DSPs like StackAdapt, The Trade Desk
Why retargeting almost always wins on ROAS
Site visitors are pre-qualified. They already know your brand exists, found your site relevant enough to land on, and are at least exploring solutions. Compared to cold audiences, retargeted visitors typically:
- Convert 2-5x higher
- Cost 30-50% less per click (smaller, more targeted audience)
- Require less creative/copy work to convert
When retargeting doesn't work
- Low site traffic — retargeting needs minimum audience sizes (typically 1,000+ recent visitors) to function
- Bad underlying conversion — if your site doesn't convert cold traffic, it won't convert retargeted traffic either
- Privacy regulation impact — iOS 14+ changes have reduced retargeting accuracy on Meta; cookie deprecation continues to erode tracking
- Frequency burnout — showing the same ad 30 times to one person creates negative brand association
How to do retargeting well
- Segment audiences by intent level — pricing-page visitors get different ads than blog readers
- Cap frequency — 3-7 impressions per week typically the sweet spot
- Rotate creative — refresh ads every 30-60 days to avoid burnout
- Sequence the message — awareness then social proof then offer, not the same pitch repeatedly
- Set audience exclusions — remove people who converted so you're not paying to re-acquire customers
- Time-decay audience windows — 30-day visitors get one message, 60-day get another, 90-day get a final offer or pause