Comb one short hair section in a single visible pass

Original, untested video brief. No input image or generated result is supplied.

1. Task and boundary

A comb travels once from the upper part of a short loose hair section to its tips. The supporting hand holds the section above the working area, while existing strands become more parallel behind the moving teeth. Inspect local rearrangement along the pass, not a sudden replacement of the whole hairstyle with a smooth surface.

This original plan is untested. Choose already loose, lightly separated hair and a plain wide-tooth comb. Exclude cutting, detangling a tight knot, hair growth and a full hairstyle reveal. The task concerns the visible section and does not claim a treatment effect or restoration of damaged hair.

2. Authorized first frame

Use an authorized close-up photograph or accurate drawing. One adult hand holds a short hair section near its upper end; the other holds a comb with teeth lightly engaged just below that support. Show the full working length and free tips against a plain background.

Select several recognizable small strand groups with slight differences in direction. Keep the comb spine, tooth row, both wrists and the supporting grip visible. Leave space below the tips for the teeth to exit. Avoid a thick opaque hair mass that hides every contact before movement begins.

3. Use the generator

Open the current image-to-video generator in a mode accepting your authorized first frame. Paste the prompt; check settings and cost before submission. Nothing runs automatically.

4. Prompt and timing

Begin from my authorized close-up of a short loose hair section held above a wide-tooth comb that is already lightly engaged. Keep the camera, lighting and upper supporting grip steady. Draw the same comb slowly downward through the visible section once, with its tooth row leading through the existing strands toward their tips. Let nearby strands shift into more parallel paths behind the moving teeth while remaining connected to the same upper section. Preserve the original comb spine, tooth spacing, hair length and recognizable strand groups. Continue until all teeth clear the free tips, then move the comb slightly away and stop. Leave the same hair hanging more evenly without replacing its texture or adding volume. No cutting, growth, new strands, head turn, extra hand, repeated brushing stroke or cut.

1. Opening fifth: identify the held upper section, tooth engagement and original strand directions.
2. Middle three fifths: compare hair just ahead of and behind the same descending tooth row.
3. Final fifth: inspect the teeth clearing the tips and the hair’s remaining shape after the comb separates.

5. Inspect the output

For each check, record a frame or time, observation and pass, fail or inconclusive judgment.

• The comb moves relative to the supported hair rather than dragging the entire section unchanged.
• Alignment changes locally behind the tooth row, not everywhere before contact.
• Recognizable strand groups remain connected and keep their approximate length.
• The same teeth and spine persist without melting into the hair.
• All teeth clear the original tips before the comb moves away.
• If the working contact is fully covered, mark comb-guided rearrangement inconclusive even if the final hair appears smoother.

6. Fix one failure

• Hair becomes a solid sheet: retain the original small groups and leave visible spaces between some strands.
• The comb passes through without interaction: keep shallow engagement and request only a modest local alignment.
• The supported section moves with the comb: anchor the upper grip while allowing movement below it.
• The teeth remain trapped at the end: extend the visible path a little below the original tips before separating.

7. Ending and limits

Finish with the original comb fully clear and the same supported hair section hanging in a more parallel arrangement.

Save your result, authorized input, exact prompt, settings and inspection notes.

No generated output, hair-care result or strand-level physical simulation is supplied. Fine hidden fibers cannot be individually verified.

The ponytail task follows hair after a moving head stops. Here an external tooth row traverses a held section and rearranges it locally. Tucking hair behind an ear instead reroutes a lock around a fixed body boundary.