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Case Study · UGC CreatorDemonstration simulation

"Why my Reel looked good but didn't sell"

Léa R., a beauty creator, was preparing a highly polished sponsored Reel. Before sending it to the brand, she wanted to validate one thing: would the product and its benefit be understood early enough?

A realistic scenario built to show the level of detail of the final report.

Format: Instagram Reel · 9:16Duration: 15 secondsAudience: Women 25-34, skincare interestObjective: Product visit → purchase
léa.skinlabPaid partnership

Visible glow. No filter.

00:15
Simulated attention−22%

Product identified at 7.1s

0s3s7s

Context

Léa has been publishing skincare Reels for two years. Her audience follows her for honest routines, not disguised ads. When a serum brand approached her for a sponsored collaboration, she wanted a video that stayed true to her editorial tone.

She filmed a 15-second GRWM: soft light, mirror, serum application at the end of the routine. The team liked the edit, but no one knew whether the promise landed early enough for a cold audience. Media spend had not started yet.

The original creative

"The serum everyone's talking about"

A fixed shot facing a mirror. The creator talks for 15 seconds. The serum visually appears at the 7-second mark. The product promise is spoken at second 9. The CTA is at the end of the video.

Protocol

Each reaction is generated in the target audience context, then aggregated without hiding minority objections.

Test briefInstagram Reel · 9:16
010–3s: Visual hook (mirror, lighting)
023–7s: Skincare routine (cleanser, cream)
037–9s: Serum appears visually
049–12s: Product promise
0512–15s: CTA

What the panel detected

The visual universe is premium and the hook grabs attention. But the product and its promise arrive after the interest drop. The panel doesn't understand what's being sold until second 9 — too late.

500 synthetic agents matching the target audience profile watched the video. Here are their aggregated reactions.

Primary score

54/100

Needs clarity

Critical signal

Attention drops 22% between seconds 4 and 7 — before the product even appears.

Hook strength78
Scroll-stop65
Message clarity42
Purchase intent38
Trust61

Panel reactions

It's pretty, but I almost scrolled before seeing the product.

Synthetic agent

I didn't know it was a serum ad until the end.

Synthetic agent

The skincare routine is pleasant to watch but the product should have been shown immediately.

Synthetic agent

The decision

Show the serum and its promise from the very first second.

The panel identified that attention is captured immediately by the visual hook, but drops as soon as the video becomes a routine without an identified object. The product must be visible in the frame from the opening, and the promise must land within the first 3 seconds.

The re-test

The revised version keeps the tone and lighting of the GRWM. The serum is visible from the opening frame and the benefit lands in the second second.

Before

54

/100

After fix

82

/100

Simulated improvement

+28 pts

Changes tested

  • Serum visible in frame from second 1
  • Product promise moved to second 2
  • Routine kept but placed after product identification
  • CTA kept at the end with a visual callback to the serum

This time I immediately understood what was being sold. The routine becomes a demonstration, not a distraction.

Synthetic agent, after fix

Next case

"The client had an opinion. The panel had an answer."

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