What is Hook Fatigue?
When an ad that worked for 1-2 weeks starts declining and is no longer profitable by week 4. The same audience has seen the ad enough times that the pattern-interrupt no longer interrupts. Hook fatigue is not a bug — it is how the algorithm and the human brain work together.
Hook fatigue is observable as ROAS gradually falling on a previously-winning ad despite no audience or budget changes. The fix is to vary the hook (same product, new hook reads as fresh creative to the algorithm), vary the avatar, and vary the b-roll. Running a weekly creative discovery loop ensures replacements are queued before the current winner fully decays. Brands that run scale pipes without parallel discovery pipes always experience a ROAS cliff in week 4-5 — and have nothing ready to replace the dying ad.
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