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How to write Facebook ad copy from what buyers say

Start from a sentence a customer already wrote, make it the one promise of the ad, and put it first. No wording can promise a conversion rate, so this also says what makes copy clear.

Bor Dolenec7 min read

Say a customer writes in a review, "I lit it at six and the flat still smelled of cedar at midnight." It holds a moment, a scent and a result, in words a stranger can picture. That is most of an ad, and nobody on your side had to write it.

That is how to write Facebook ad copy: start from a sentence a buyer already wrote, make it the one promise the ad makes, back it with one fact, and finish on one ask. The rest is knowing where each piece goes.

How to write Facebook ad copy from the sentences your buyers wrote

Your best lines are already in your hands: product reviews, emails to support, the questions people send before they buy, and the comments under your ads. The Meta pages we read do not say where to find your words, so this part is a method, not Meta's rule.

Copy out the sentences that make you stop, exactly as written. Keep the ones that say what happened and when: "it is lovely" tells a stranger nothing, "it was still going at midnight" does. Meta's page on text options lists quoting a review among its examples of effective text.

One customer is one voice, so trust a sentence that turns up in several reviews. With no reviews yet, start from the questions people ask before they buy. Ask before you print a review word for word, and read Meta's advertising standards before a claimed result goes in.

Where each line goes in a Meta ad

Meta's help page on text in ads defines the fields. Primary text is the main copy above the picture, the headline is the bold copy below it, and the description is the secondary copy below the headline. A call-to-action button goes with them.

Put the buyer's sentence first in the primary text and the promise, said plainly, in the headline. Keep the description for what the ad can do without. That placement is judgement, not Meta's rule.

Meta says primary text should span one to three lines at most, and that telling people what you want them to do at a glance is the most important goal of the text. So the last words of your copy should say what the button does. Leave the text blank and Meta says it may be pulled from your website URL, and you may not be able to edit it. The post on recommended text length by placement has the counts.

Choose one promise for each ad

A stack of reviews holds many promises: scent, burn time, how it looks on a shelf, delivery. An ad that tries all of them hands a stranger four things to weigh in one glance.

Count instead. The promise in the most reviews and emails is your first ad, and the next most common is your second. Meta describes creative diversification as ads with different themes, messages and visuals, so a second promise gets its own ad (why Meta asks for ads that differ has the detail). Meta also says your primary text, headline and description should not contradict each other, which is easier when all three say one thing.

Read which angles your competitors have run longest before you pick. If all of them lead on the same promise, your second may be the open one.

A Facebook ad copy template you can fill in

A Facebook ad copy template has four parts, filled in this order from your reviews and your store: a line in the buyer's own words, the one promise that line makes, one piece of proof a buyer can check, and one ask. Drop any part you cannot fill with something true.

Say you sell candles and start from the review above. Filled in, the template reads:

  • Their words: "I lit it at six and the flat still smelled of cedar at midnight."
  • The promise: Cedar that lasts the evening.
  • The proof: [The burn time from your product page.]
  • The ask: Shop the cedar candle.

The words, proof and ask make the primary text; the promise is the headline. The brackets hold the one fact only your store can supply, because an invented burn time is worse than a gap.

Facebook ad copy examples for one candle shop

Facebook ad copy examples work best when each starts from a different customer sentence and makes a different promise, so a candle shop gets one ad for the scent, one for the gift and one for the even burn, not one ad written three times. The scent ad is above. These two are examples for an imagined shop.

  • A gift. Review: "I sent one to my sister and she texted me a photo of it on her shelf." Primary text: that sentence, then "Send one to someone you miss." Headline: Ready to give when it arrives
  • An even burn. Review: "No more tunnelling down the middle and wasting half of it." Primary text: that sentence, then "See how it burns." Headline: Burns evenly to the edge

Compare the ad that makes every promise: "Beautiful scents, long burn, a lovely gift, fast delivery." Any candle shop could say it, so a stranger keeps none of it.

What it means to write Facebook ad copy that converts

Facebook ad copy that converts is copy a buyer understands in one read. It says what the product does, who it is for and what to do next, in words they would use. No wording can promise a conversion rate, because the offer, the price and the picture decide it too.

What you control is clarity and specificity. A specific line can be checked, since a customer who never smelled cedar at midnight can say so; "Beautiful candles for your home" cannot be wrong, which is why it does nothing.

Meta says testing is the best way to find what works for your audience, so give each promise its own ad. If you use Meta's text generation, its help page says reporting is based on a single ad, so you will not see how each variation did. Enhancements such as text improvements may also adjust the text you upload, and you can turn them off.

The first fix Meta's help page on creative fatigue names for a tired ad is a new image or video that is materially different, so new words on the old picture do not count as one. How to check an ad for creative fatigue says what to read first.

Where Nomi does the writing

Nomi picks up once the promise is chosen. Ask the strategist for a campaign and it reads your brand and the ads running in your market, comes back with the plan before anything is drawn, and writes the copy.

It writes against what you sell and how you sound, drafted from your site. A blank prompt gives copy that sounds like nobody in particular, and when a fact is missing from the brief, Nomi asks you for it rather than inventing one.

Keep reading.

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Six kinds of Facebook ad hook with examples, and what hook rate means in Meta.

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Facebook ad copy character limits by placement

Meta's recommended lengths for primary text, headline and description, by placement.

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What Meta Andromeda means for the ads you run

What Meta's Andromeda changed, and why it asks for different ads rather than more of them.

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