Your best ad from 3 weeks ago is still running. Nobody has touched it. This is what the numbers did (example numbers):

WeekFrequencyCTRConv. rateCost per sale
11.61.4%3.1%£24
22.41.6%2.6%£29
33.41.9%1.8%£34

Frequency rises, clicks rise, sales fall. The account manager suggests more budget “to push through the plateau”. The ad is tired, and more budget shows it to the same people more often.

Creative fatigue is the point where the people who respond to an ad have all seen it too many times. It follows a pattern you can plan for.

It now arrives in weeks, not months

A strong Meta ad used to run for 2 months before it tired. Today many tire within a month, and the biggest spenders within 1 to 2 weeks.

2 reasons:

  • More ads compete for the same people. A shopper sees your ad, then a competitor’s for the same product, then another angle 3 days later. Each extra ad shortens how long yours feels new.
  • Meta matches each ad to people who behave like past buyers. The most responsive group sees the ad again and again until it is used up. That is why frequency climbs just before conversion falls.

How many new ads you need

A starting rule of thumb: plan about 1 new concept a month for every £1,000 of monthly Meta spend, then adjust to how fast your frequency climbs. A concept is a different argument, not a different button colour.

Monthly Meta spendNew concepts per month
Under £5k3 to 5
£10k10
£20k20
£30k30
£60k60, refreshed weekly

Take a brand spending £30,000 a month: about 30 concepts. Most accounts we review make 5 to 10.

Needed at £30k
30
Typically made
5 to 10
Concepts a month at £30,000 of Meta spend (rule of thumb against what most accounts make).

Cover 5 buyers, not 1

15 versions of the same product shot with a new headline look identical to Meta. They compete for the same people, tire together, and cost more to make.

Cover 5 different buyers:

BuyerWhat they thinkAd that fits
Unaware”I did not know this was a problem”Native, UGC-style content that shows the problem first
Problem aware”I know the problem, not the fix”Educational or comparison ads that name your category
Solution aware”I am comparing options”Specific claims, reviews, clear differences
Gifting”I am buying for someone else”Occasion-led ads. They reach people product ads miss
Sceptic”Interested, not convinced”Before and after, objection handling, trial offers

If your ads cover 1 or 2 rows, you are invisible to the rest.

4 signs it has started

Check these weekly. They show up before ROAS falls.

  1. Frequency above 2.5 over 7 days on a prospecting campaign is a warning. Above 3.5, the responsive group is almost certainly spent.
  2. CTR up while conversion rate falls. The ad still gets attention, but the people clicking are less ready to buy. Weeks 1 to 3 above show it.
  3. Cost per checkout rises faster than cost per click. The traffic is getting less ready to buy.
  4. New ad sets start worse. If a fresh audience underperforms on your current ad, the ad is the limit.

A weekly rhythm that keeps pace

  1. Weekly: list the ads past the frequency or conversion warnings. Retire them within 5 to 7 days, so their replacements are ready.
  2. Monthly: brief at least 1 concept for each of the 5 buyers above, across UGC, static and short video. Brief new arguments, not copies of last month’s winner.
  3. Creators: send product to about 15 creators a month who look like your customer, and agree usage rights. Each creator who delivers gives you 1 to 3 usable videos.
  4. Evergreen ads: keep your 3 to 5 best ever ads on file. Bring one back briefly while new concepts ramp up.

More creative costs money. Check what your margin can afford.

Making enough creative is the hard part, so we run it as a service: see creative production and our Meta ads agency work, or book a free call for a read on how many concepts you make and how fast they tire.

Quick answers

How quickly do Meta ads burn out?

A strong Meta ad used to run for 2 months before it tired. Today many tire within a month, and the biggest spenders within 1 to 2 weeks. Frequency above 2.5 over 7 days is usually the first measurable signal.

How many new Meta ads do you need per month?

A starting rule of thumb: plan about 1 new concept a month for every £1,000 of monthly Meta spend, then adjust to how fast your frequency climbs. Different hooks, formats or emotional triggers, not variations of the same angle. At £30k a month, that is about 30 new concepts. Most brands make 5 to 10.

What is the difference between ad variation and creative diversity?

Variation is changing a button colour or swapping a headline. Diversity is changing the argument you make. A UGC testimonial, a founder story, a comparison ad and a product demo are 4 different creatives, each speaking to a different buyer. 4 versions of 'Free UK delivery, shop now' over different product images are 1 creative repeated 4 times.

Does creative fatigue affect retargeting and prospecting the same way?

No. Retargeting tires faster because the audience is smaller and each person sees the ad more often. A retargeting ad at 5 views a week per person can fatigue in days. Prospecting has more room, but the cause is the same: the people who respond to one angle run out.

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