Glossary

Collagen

Collagen

Kollagen

Collagen is an important structural protein of the connective tissue and gives strength to skin, tendons, bones and cartilage. It forms a supporting framework in the body. Its content in the skin decreases with age.

Symptoms rather than terms?

Describe what's going on — we'll find the right doctor for you.

Editorial content · as of 9/5/2026