Dynamic Facial Analysis: Assessing the Face in Motion
Quick facts
- Goal
- See what the face does in motion before deciding where and how much to treat
- Minimum movements
- Raise the brows, frown, close the eyes, smile, speak and purse the lips
- Frequent mistake
- Planning only from the still photo and ignoring the patient's habitual expression
- Record
- Short video or a sequence of photos of each movement, with the same light
The still face tells only part of the story. The patient with a smooth forehead at rest may frown hard as soon as they speak; the lovely smile in the photo may hide a mouth corner that rises less on one side; the "tired" look may come from a frontalis that works all day to hold up the brow. Without observing movement, the plan is born from a static photo, and the risk is treating what shows without understanding what causes it.
This page organizes the dynamic analysis: which movements to request, what each one reveals, how to record and how what you saw enters the plan. It complements facial analysis in facial harmonization: step by step and connects to face at rest vs. in motion.
Why look at the face in motion?
There are three practical reasons. First, dynamic wrinkles only exist when the muscle contracts, so they only appear in the assessment in motion. Second, muscles work in pairs of force, with elevators and depressors, and the patient's habit changes the balance. Third, facial asymmetry is usually greater in motion than at rest, and knowing it protects you from a future complaint.
Static wrinkles, by contrast, show even with the face relaxed. The difference between the two guides the plan, since a dynamic line calls for action on the muscle, and a static crease usually calls for different reasoning. For the muscles involved, see the muscle map for botulinum toxin.
Which movements to request and what does each one show?
| Movement | Area observed | What to look for |
|---|---|---|
| Raise the brows | Forehead and frontalis | Horizontal lines, symmetry of the lift, a brow that rises more on one side |
| Frown | Glabella and corrugator | Vertical lines, the "11", strength on each side |
| Squint | Orbicularis oculi | Lateral lines, bags, drop of the brow tail |
| Open the eyes wide | Upper eyelid | Asymmetry of opening, signs of ptosis |
| Smile with the mouth closed | Midface and lips | Which muscles are recruited, folds that deepen |
| Smile showing the teeth | Upper lip and mouth corners | Gingival display, symmetry of the corners, buccal corridor |
| Purse the lips | Orbicularis oris | Perioral lines, asymmetry of the arch |
| Wrinkle the chin | Mentalis | "Orange peel" chin, pull on the lower lip |
| Say simple sentences | The whole | Compensations, tics, mouth movement |
The sequence can be reduced to a few movements when the complaint is focused, but it is worth keeping the order from top to bottom, which avoids forgetting areas. For the lip and smile area, details are in smile analysis in facial harmonization.
How to record without losing quality?
Photos of each movement, with the same framing and the same light as the neutral photo, allow comparison later. A short video (a few seconds per movement) helps capture the duration and the asymmetry that a photo freezes. The light should come from the front and be soft; harsh shadows exaggerate lines. See lighting for the planning photo.
Video is an image of the face and therefore sensitive personal data. Ask for specific consent, say where the file will be stored and for how long, and do not use it for promotion without written authorization. The basis is in consent and LGPD in photos and in the glossary page on LGPD.
How does movement change the plan?
Some patterns repeat and serve as questions to investigate, not as rules.
- Overactive frontalis: the patient raises the brow all the time to open the gaze. Reducing that muscle too much can drop the brow and weigh down the eyelid. See eyelid ptosis.
- Strong, asymmetric frown: vertical lines more marked on one side indicate a stronger muscle on that side. This enters the strategy, at the professional's discretion.
- Smile that rises more on one side: worth recording before any treatment in the midface or lower face, so you are not blamed for it later. See asymmetric smile after toxin.
- Chin that wrinkles when speaking: the mentalis is the protagonist, and the planning of the lower third changes.
- Thin lip at rest and full when smiling: volume at rest is not the only criterion, and the lip plan changes if the complaint is only static.
When does the patient "put on a face" during the assessment?
Almost every patient changes expression when they know they are being assessed, which is called the "photo face". This is normal, and spontaneous observation helps tell them apart. For the neutral photo, guidance is in neutral expression in the planning photo and expressionless face: how to avoid it. For smiling in the photo, see photo with or without a smile in planning.
What does Harmy show of movement?
This limitation needs to be stated clearly to the patient, since they may imagine the image "moves" like the face. The discussion is in simulation does not show movement. Record in the patient record what you saw in motion, next to the photo, so the follow-up reading is done by the same criterion.
Every decision on product, area and technique belongs to the licensed professional, according to the rules of their professional council. Dynamic analysis does not replace the in-person assessment; it makes it more complete.
Frequently asked questions
What is dynamic facial analysis?
It is the assessment of the face during expression and speech, not just at rest. It shows which muscles the patient uses, how the brow, gaze and mouth move, and where asymmetry appears.
Why is the still photo not enough for planning?
Because many complaints only show up in motion, such as dynamic lines, an asymmetric smile or frontalis compensation. Without seeing the movement, the plan may treat the wrong place.
Which movements should I ask the patient to perform during the assessment?
Raise and lower the brows, frown, squint, smile with the mouth closed and open, speak and pucker the lips. The sequence depends on the complaints and the areas being assessed.
Can I record a video of the patient for the assessment?
Yes, with specific consent for the image and its use, and secure storage of the file, in line with LGPD (Brazil's data protection law) and your professional council's rules. Do not publish it without written authorization.
Harmy images are illustrative simulations generated by AI from the patient's photo to support the conversation between practitioner and patient. They are not a promise of results. Indication, technique, product and volume are solely the decision of the licensed practitioner. This content is for information only and does not replace a clinical assessment.