Corto7 Hook Formulas That Convert on TikTok & Reels
What is a hook in a UGC ad?
A hook is the first 1–3 seconds of a short-form video: the line, visual, or question that stops a viewer from scrolling. In UGC-style ads the hook is the single highest-leverage element — platforms test your video on small audiences first, and most of those decisions happen before your product ever appears on screen.
Why do the first 1.5 seconds decide everything?
TikTok, Reels, and Shorts all run a recommendation engine that evaluates watch-time signals in the opening moments. If a viewer swipes past in under two seconds, the platform reads the video as low-value and stops distributing it. If they stay past the 3-second mark, distribution expands. That is why experienced DTC brands treat the hook as the ad: the same body video with a different opening line can perform several times better.
What are the 7 hook formulas that convert?
These seven formulas cover the majority of high-performing short-form ad openings. Each has a template and an example.
- The contrarian hook — "Stop doing [common advice]. Here is what actually works." It works by challenging an assumption the viewer already holds, which creates a curiosity gap.
- The transformation hook — "I was [before state]. Then I tried [product]. Now I am [after state]." Before-and-after structure delivers social proof instantly.
- The list hook — "3 things I wish I knew before [activity]." Lists promise value density: multiple insights in one video.
- The urgency hook — "This is the last time I will say this about [topic]." Implies the information is valuable enough to be final.
- The relatable-struggle hook — "Does anyone else [common frustration]?" Builds instant community; viewers tag friends and comment their own versions.
- The authority hook — "As a [role], here is what most people get wrong about [topic]." Credentials buy attention; strongest for expert-driven products.
- The question hook — "Why do [group] always [behavior]?" Questions activate the brain's need for closure — viewers stay to resolve it.
How many hooks should you test per product?
More than most brands do. Industry comparisons in 2026 put the healthy creative-testing baseline at 15–30 fresh variants per product per month, because winning ads fatigue within weeks on TikTok and Reels. A practical pattern: put the same product behind several hooks, run them against each other with a small budget, and scale only the winner.
| Testing approach | Variants/month | Typical outcome |
|---|---|---|
| One ad, no testing | 1 | Fatigues in 2–3 weeks; no learning |
| Weekly creative refresh | 4–8 | Moderate; winners found by luck |
| Full 7-hook testing loop | 15–30 | Consistent winners; data on what your audience responds to |
How do you test hooks without burning budget?
The expensive way is hiring creators per variant — creator UGC averages around $198 per video according to 2026 industry benchmarks, and that price is per take, not per hook. The cheap way is generating the hooks from one product page and rendering them as videos programmatically, which is where Corto sits: paste a URL, choose one of the 27 hook suggestions a run returns, and each run renders three finished ads — a talking-head ad, a product B-roll ad, and a caption ad — so you can test them and keep the winner.
FAQ
How long should a TikTok ad hook be? One to three seconds. Anything longer and the platform's early watch-time test has already judged you.
Do hooks work differently on Reels vs TikTok? The formulas are identical; the payoff differs slightly. Reels rewards completion rate more strongly, so pair your hook with a tight 20–30 second body.
Should the hook mention the product? Rarely. Hooks work by creating curiosity or identification. Lead with the viewer's problem or desire — the product earns its appearance in the middle of the video.