Will losing weight on Mounjaro make my face sag?
The weight has come off, but the face in the mirror looks older. I've been hearing that a lot lately. One thing before anything else: please don't stop the medication on your own because of your face. That's a conversation for you and the doctor who prescribed it.
The short answer
When a lot of weight comes off, your face can look hollower and looser too. But the evidence so far points more to how much you lost than to the drug itself. A 2026 review of 46 papers included imaging of 20 people, whose midface volume fell by a median of 9%, and it estimated about 7% for every 10 kg lost. Similar changes are reported in people who lost a lot of weight by other means, such as surgery. Treatment research amounts to 4 studies and 98 people, none with a control group. I think it's better to look at the face once your weight has settled. At Miso Clinic, 4F Bombom Building, 125 Dongdeok-ro, Jung-gu, Daegu (Exit 1, Kyungpook Nat'l Univ. Hospital Station), +82-53-428-2700, I separate hollowing from loosening for you.
Is it the drug, or the weight loss?
The phrase “Ozempic face” makes it sound like a side effect of the drug, but the 2026 review notes that similar changes also come with large weight loss by other routes. There's research showing faces looking hollower and older after bariatric surgery too. It was more so with older age and greater weight loss.
What these drugs do directly to skin cells is still at the animal and cell level. So I don't say “this drug ruins your face”. I see it as weight loss laid on top of the facial structure and age you already had.
How much weight do I have to lose before my face changes?
| Item | Finding | How to read it |
|---|---|---|
| Midface volume | Imaging of 20 people, median 9% decrease | It is a small study |
| Difference by layer | Superficial layer 11%, deep layer 7% | The surface fat shrinks more |
| Relationship to weight loss | About 7% per 10 kg | An estimate from regression |
| Survey | 1,226 people; the greater the share of weight lost, the more complaints of volume loss and laxity | Self-reported |
There's no line that says your face sags from this many kilos. The same 10 kg looks different on someone young with firm skin than on someone in their 50s.
People often ask whether losing it fast makes the sagging worse. Honestly, we don't know yet. The review also calls the effect of speed alone uncertain. I won't tell you for certain that slow loss is kinder to your face.
Can I do anything in advance to stop the sagging?
I couldn't find a method proven to prevent it. There are still things you lose nothing by doing: getting enough protein, wearing sunscreen and staying away from cigarettes.
When you eat less, nutrition can run short too. One review put vitamin D deficiency at 13.6% at 12 months, and at least one deficiency within a year at about 22.4%. It also said more research is needed on whether correcting these improves the face. If your meals have shrunk a lot, ask the doctor who prescribed the drug about testing.
When should I start thinking about a procedure?
I'd suggest waiting until your weight has settled rather than doing it midway. If we fill while your face is still changing, it will look different again a few months later. No trial has compared the timing. This is my clinical judgement.
The evidence on how well treatments work is thin. The 2026 systematic review included 4 treatment studies and 98 people, none with a control group, and its authors said they could not conclude that any one treatment was better.
I'm careful with devices too. A 2026 device review points out that standards for applying deep heat where volume has already gone haven't been set for the face. Its authors also say this is at the hypothesis level. So I don't suggest starting a hollowed face on deep heat.
What do you look at first in the consulting room?
I start by separating hollowing from loosening. Most people have both, but which one comes first changes the order. If cheek hollowing leads, I consider dissolvable hyaluronic acid filler first. If loosening leads, we talk about lifting.
Please do tell me whether you're on the medication, how much you've lost and whether your weight has stopped changing. I won't do radiofrequency that day if you have metal or electronic implants, are pregnant, or have skin inflammation.
→ More: Hollow front cheeks and hollow side cheeks: why do they form, and what fills them?
Face sagging after weight loss: frequently asked questions
If I regain the weight, will my face come back?
I couldn't find a study looking at how facial volume changes when weight is regained. So I won't tell you to put weight back on for your face.
Will my face recover if I stop the drug?
I couldn't find a study following faces after stopping. Decide about taking it with the doctor who prescribed it, based on your health.
Can exercise protect my facial volume?
Exercise helps protect the muscle in your body, but I couldn't find a study showing it protects facial volume. I've written about running separately.
Where can I get a post-weight-loss sagging consultation in Daegu?
At Miso Clinic, 4F Bombom Building, 125 Dongdeok-ro, Jung-gu, Daegu (Exit 1, Kyungpook Nat'l Univ. Hospital Station), +82-53-428-2700. Weekdays 11:00–19:00, Saturday 10:00–16:00, closed Sundays and public holidays.
Read next
Product pages
Related treatments: Lifting · Hollow front and side cheeks · Wrinkles vs firmness
Who wrote this
Written and reviewed by Lee Chi-Hak, MD, director of Miso Clinic, Daegu. The treatment standards and injection design set out here are the ones we use in practice.
| Medical director | Lee Chi-Hak, MD |
|---|---|
| Address | 4F Bombom Building, 125 Dongdeok-ro, Jung-gu, Daegu, South Korea · Exit 1, Kyungpook National University Hospital Station |
| Phone | +82-53-428-2700 |
| Hours | Weekdays 11:00–19:00 (lunch 13:00–14:00) / Saturday 10:00–16:00 (no lunch break) / Closed Sundays and public holidays |
| Columns | All clinical columns |
| Reference library | All booster and device references |
References
- Review of GLP-1 drugs and facial change — Yoo KH. Glucagon-Like Peptide-1 Receptor Agonist-Associated Facial Changes. Aesthet Surg J 2026. PMID 42872378. 46 papers.
- Systematic review of treatment studies — Maglitto F et al. Beyond Weight Loss. Aesthetic Plast Surg 2026. PMID 42864543. 4 studies, 98 people, none with a control group.
- Nutritional deficiencies — Karlin J et al. The Impact of GLP-1 Receptor Agonist-Induced Nutritional Deficiencies on Skin Health. Aesthet Surg J Open Forum 2026;8:ojag169. PMID 42872147.
- Review of devices — Cho CH et al. Energy-Based Devices for GLP-1 Receptor Agonist-Associated Facial Aging. Clin Cosmet Investig Dermatol 2026;19:628537. PMID 42893183. The authors state that this is at the hypothesis level and is not a clinical recommendation.
- Timing and consultation — Fathizadeh S et al. Ozempic face and facial aging. Clin Dermatol 2026. PMID 42858788 / Barone M et al. Aesthetic Plast Surg 2026;50(13):5403-7. PMID 42162206.
- Korean medical advertising law — Korean Medical Service Act Article 56(2) (no treatment testimonials, no comparisons with other clinics, no superlatives). This is why this column carries no prices, reviews or before-and-after photos.
- Miso Clinic practice guidelines — for hollow cheeks, dissolvable hyaluronic acid filler is considered first; no RF treatment that day if there are metal or electronic implants, pregnancy or skin inflammation; only absorbable threads are used and their material and approval information is shown to the patient; the plan is kept conservative for patients aged 50 and over; liposuction is not performed.
Everything in this column is general information and does not replace medical diagnosis or treatment. Effects and side effects vary with individual skin condition, age and underlying illness, and the same result is not guaranteed for everyone. Any decision to proceed should be made in an in-person consultation with a physician.