Skin changes

GLP-1 skin, explained

What weight-loss injections can do to your face, skin and hair, and what actually helps.

Also in Skin changes: Perimenopause skin · Menopause skin · GLP-1 skin

In a nutshell: GLP-1 medicines such as Wegovy and Mounjaro don’t damage skin directly. The changes come mainly from losing weight quickly: less fat in the face, looser skin, and temporary hair shedding. Skincare can’t replace lost volume, but a barrier-friendly routine, a retinoid and daily SPF help skin look its best. Eating enough protein matters too.

What changes, and why

  • Facial volume loss: quick weight loss reduces the fat under the skin of the face, especially the temples, cheeks and under the eyes. This is what people call “Ozempic face”. It can make the face look more hollow and older.
  • Looser skin: when fat shrinks faster than skin can adapt, skin can sag, on the face, neck and body.
  • Hair shedding: some people notice more hair in the brush two to four months in. This is usually telogen effluvium, a temporary shedding triggered by rapid weight loss and low protein, not by the medicine itself.
  • Injection-site reactions: redness, swelling or itching where you inject are common, and usually mild.

Researchers say more studies are needed on exactly how these medicines affect collagen and skin, so expect advice here to develop.

What skincare can and can’t do

It can’t: put back fat or volume. No cream, serum or mask does that.

It can: keep the skin barrier healthy, support firmness over time, and protect against sun damage, which makes looser skin look worse.

Firmness and fine lines

What helps: Retinal or retinol Strong

Try: Beauty of Joseon Revive Eye Serum Ginseng + Retinal

Support for firmness

What helps: Peptides Promising

Try: COSRX The 6 Peptide Skin Booster Serum

Dryness

What helps: Ceramides, hyaluronic acid Good

Try: Haruharu Black Rice 5 Ceramide Cream

Protecting it all

What helps: Daily SPF50 Strongest

Try: Beauty of Joseon Relief Sun SPF50+

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Beyond skincare

  • Protein: GLP-1 medicines reduce appetite, so it’s easy to eat too little protein. Hair and skin need it. Ask your prescriber or a dietitian what’s right for you.
  • Pace: slower, steadier weight loss appears to put less stress on skin and hair. Talk to your prescriber rather than changing your dose yourself.
  • Clinic treatments: for volume loss and laxity, dermatologists use options such as fillers, collagen-stimulating injections and energy-based devices. If you’re considering these, see a qualified, regulated practitioner.

When to speak to your prescriber or GP

Get advice for a rash, hives or blisters, swelling of the face or lips, injection-site reactions that get worse rather than better, or hair shedding that carries on beyond six months. Don’t stop your medicine without talking to them first.

Good to know

Does Ozempic face go away?

It can partly improve if your weight stabilises, but lost facial volume doesn’t always fully return. Skincare helps skin quality, not volume.

Will my hair grow back?

Shedding linked to rapid weight loss is usually temporary, and hair often recovers within months. See your GP if it carries on beyond six months.

Can I use retinol on GLP-1 medicines?

Yes, there’s no known reason not to. Start slowly, two or three nights a week, with a good moisturiser and daily SPF.

Sources

  1. Haykal D, Hersant B, Cartier H, Meningaud JP. The role of GLP-1 agonists in esthetic medicine. Journal of Cosmetic Dermatology. 2024.
  2. Dermatologic implications of glucagon-like peptide-1 receptor agonists. Skin Appendage Disorders. 2025.
  3. Practical Dermatology. Facial volume loss, hair changes among GLP-1 dermatologic concerns. October 2026.

This page is general information, not medical advice. Last updated 5 November 2026.