Short answer: On Facebook and Instagram, most people only see the first line of your primary text and the headline, so those must carry the message. Open with the reader’s problem or desire, state one clear benefit, add proof, and end with a simple call to action. Keep headlines short and specific. Test several versions, and remember that the image or video usually matters more than the words, so the copy should support the creative, not repeat it.
Where copy appears
| Field | What it does | Tip |
|---|---|---|
| Primary text | Main text above the image or video | The first line is visible before “See more” |
| Headline | Bold line below the media | Short and specific, often the offer |
| Description | Small text under the headline | Not shown in every placement |
| Call to action button | Shop now, Learn more, Send message | Match it to the next step |
Meta suggests keeping primary text and headlines short, because longer text is cut off on mobile.
Simple formulas
Problem, solution, proof “Tired of AC bills doubling every summer? Our inverter units use up to 40% less power. Rated 4.8 by 2,000 customers.” Only use claims and numbers that are true for your product.
Before and after Describe life before the product and after, in plain words.
Question hook “Still answering customer messages at midnight?”
List Three short benefits, each on its own line.
Writing tips
- Write to one person, using “you”.
- Lead with the benefit, not the feature.
- Be specific: “Delivered in 24 hours in Dhaka” beats “Fast delivery”.
- Add proof: reviews, ratings, guarantees or numbers you can support.
- One call to action per ad.
- Match the landing page, so the promise continues after the click.
Mistakes to avoid
- Long introductions before the point
- Personal attribute wording such as “Are you overweight?”, which breaks Meta’s policies
- Exaggerated claims you cannot prove
- Too many emojis or capital letters
- The same copy for cold audiences and retargeting
Copy for different audiences
- Cold audiences: focus on the problem and the hook.
- Warm audiences: answer objections, show proof and reviews.
- Retargeting: remind, add urgency or an offer.
Testing copy
Use Meta’s option to add multiple text options, or test two clearly different angles with the A/B test tool. Judge on cost per result, not on likes.
Frequently asked questions
How long should Facebook ad text be?
What makes a good Facebook ad headline?
Can I use emojis in Facebook ads?
What words should I avoid in Facebook ads?
Does ad copy matter more than the image?
Who can write Facebook ad copy for my business?
Want ads that sell?
I can write and test copy angles for your campaigns. See my Meta Ads management service or request a free ads audit. Also read UGC ads on Facebook and Instagram and Facebook ad creative testing.