What makes a good retargeting ad?

There are a few key factors that make a retargeting ad effective. First, the ad should be relevant to the user's interests. The ad should also be timely, so that it's shown to the user when they're most likely to be interested in your product or service. Finally, the ad should be visually appealing and easy to understand.If you can create an ad that meets all of these criteria, you'll be well on your way to creating an effective retargeting campaign.