Many people who start Wegovy, Ozempic or Mounjaro are pleased with the weight loss — but gradually notice that their skin doesn't quite keep up. The face can look more hollow, the skin on the arms and belly may sag, and some people find they look older than expected. These changes have been nicknamed "Ozempic face" on social media and are widely discussed by both patients and healthcare professionals.

But what is actually happening — and what can you do about it? Here is a thorough overview.

What is "Ozempic face"?

"Ozempic face" is a popular term for the facial changes some people experience during weight loss with GLP-1 medication. It typically refers to:

It is important to emphasise that this is not a direct side effect of semaglutide or tirzepatide itself. According to a systematic review in the Aesthetic Surgery Journal (2025), the phenomenon is primarily the result of rapid weight loss — and can occur with any form of rapid weight loss, regardless of method.

Because GLP-1 medications can produce relatively fast and significant weight loss, it is seen more frequently here than with slow calorie restriction, for example.

What happens to the skin during weight loss?

Several processes occur in and beneath the skin during weight loss:

Fat pads disappear

Fat is not just something we want to lose — it also acts as "padding" beneath the skin. When this fat disappears rapidly, the skin loses its underlying support and can sag. In the face, patients lost an average of 7% of mid-facial volume per 10 kg of weight loss, according to a radiological study from 2025 (PubMed: 40407186).

Collagen and elastin are affected

Collagen and elastin are the proteins that give skin its firmness and elasticity. Research published in PMC12370548 (NIH, 2025) shows that rapid weight loss can reduce the density of these fibres in the skin. Additionally, GLP-1 receptors on adipose-derived stem cells (ADSC) may be activated, potentially affecting those cells' ability to produce protective cytokines and collagen.

In simple terms: the skin can lose some of its "spring".

Muscle mass can decline

Muscles provide volume beneath the skin and contribute to a "full" appearance. Studies show that up to 25–40% of weight lost on GLP-1 medication may come from muscle mass — especially if you are not actively strength training. Declining muscle mass can make loose skin even more visible.

Is everyone at the same risk?

No. Several factors influence how much the skin is affected:

What can you do?

The good news is that you are far from helpless. Here are the most evidence-based steps:

1. Eat enough protein

Protein is the building block of both muscle and collagen. When taking GLP-1 medication and eating less, it is easy to under-consume protein. Aim for at least 1.2–1.6 grams of protein per kilogram of body weight per day. Prioritise protein-rich foods such as eggs, chicken, fish, legumes and Greek yogurt. Spread protein intake across meals rather than consuming it all at once.

2. Strength train regularly

Strength training is probably the single most effective intervention against loose skin. It preserves and builds muscle mass, which fills the skin from within. Even 2–3 sessions per week make a noticeable difference. You don't need to lift heavy — bodyweight exercises like squats, lunges and push-ups are a great starting point.

3. Stay hydrated

Water is essential for skin cell function and skin barrier integrity. Dehydrated skin looks more slack and wrinkled. Drink adequate water — around 1.5–2 litres per day — and remember that fluid needs increase with physical activity and heat.

4. Protect your skin from the sun

UV rays are one of the greatest known destroyers of collagen and elastin. Use broad-spectrum sunscreen with SPF 30 or higher every day, even on cloudy days. This simple habit has a large long-term effect on skin quality.

5. Avoid smoking

Smoking accelerates collagen breakdown and significantly impairs blood supply to the skin. Studies show that smokers have markedly more sagging and wrinkled skin for the same amount of weight loss compared to non-smokers. If you smoke and take GLP-1 medication, quitting is the single action with the greatest positive impact on your skin.

6. Skincare products — what works?

Certain ingredients have documented effects on collagen production:

Remember that topical products cannot replace the fundamental lifestyle changes — they are a supplement, not a substitute.

When should you seek professional help?

If you have lost weight rapidly and are unhappy with your skin's condition, it may be worth:

A 2025 study (PMC12549488) notes that plastic surgeons report up to a 50% increase in facial procedures related to GLP-1-mediated weight loss — a sign that demand for treatments is growing alongside the medication's uptake.

A word on pace

While GLP-1 medication can produce impressive results quickly, it is worth discussing with your doctor whether to titrate slowly and not rush the weight loss more than necessary. A slower, more stable weight loss gives the skin more time to adapt and reduces the risk of pronounced loose skin.

Conclusion

Skin changes are a real and common part of the weight-loss journey with GLP-1 medication — and it can feel frustrating to lose weight and still not look as you expected. But it is important to remember that skin is dynamic tissue that adapts over time. With strength training, adequate protein, good skincare and patience, most people can achieve significant improvements. And for those still unhappy, effective clinical options exist.

Always speak to your doctor if you have concerns about skin changes during your treatment.

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