Loose Skin and Skin Changes on GLP-1: What to Expect

Loose Skin and Skin Changes on GLP-1: What to Expect

2025-07-01 · 6 min read

Significant weight loss — especially rapid weight loss — can leave the skin struggling to keep up. If you're losing weight quickly on GLP-1, you may notice changes in skin texture, firmness, or appearance. This is normal and worth understanding.

Why Loose Skin Happens

Skin contains collagen and elastin fibres that allow it to stretch and contract. When fat cells that supported the skin from beneath shrink rapidly, the skin may not retract at the same speed — especially if you're older, lost a large amount of weight, or have been overweight for many years.

Factors That Affect Skin Elasticity

  • Age: collagen production decreases naturally after 25
  • Speed of weight loss: slower loss gives skin more time to adapt
  • Amount of weight lost: larger losses mean more excess skin
  • Genetics: some people's skin bounces back more easily than others
  • Hydration and nutrition: both affect skin quality significantly

What Can Help

  • Strength training: building muscle fills out the space left by fat
  • Adequate protein: collagen synthesis requires amino acids — aim for 1.2–1.6g per kg body weight
  • Stay hydrated: well-hydrated skin is more elastic
  • Vitamin C and zinc: both support collagen production
  • Moisturise regularly: doesn't fix loose skin but improves texture and comfort

When to Talk to a Doctor

Some loose skin resolves on its own over 1–2 years as your body adapts. If significant excess skin causes hygiene issues, chafing, or emotional distress, a dermatologist or plastic surgeon can discuss options including body contouring procedures.

A Note on Perspective

Loose skin is a sign that your body has changed dramatically. Many people find it far preferable to the health risks of excess weight — and the skin often continues to improve for years after weight stabilises.

Log your weight trends in ShotFlow over time. Seeing the consistent downward line helps reframe loose skin as evidence of real progress — not a setback.

Load More