Extracellular Matrix

Extracellular Matrix — the network of proteins and molecules that surrounds and supports the cells of the dermis, providing structure, strength, and a medium for hydration. It includes collagen, elastin, and glycosaminoglycans such as hyaluronic acid, all working together to keep skin firm and resilient.

Key points

• The extracellular matrix, often called the ECM, is the structural framework that holds skin cells in place.
• It is made up of fibrous proteins like collagen and elastin embedded in a gel-like ground substance of glycosaminoglycans.
• Fibroblasts produce and maintain the components of the extracellular matrix.
• A healthy ECM supports skin firmness, elasticity, hydration, and the ability to repair itself after injury.

Frequently asked

What is the extracellular matrix made of?

It is mainly composed of structural proteins such as collagen and elastin along with water-binding glycosaminoglycans like hyaluronic acid, all produced by fibroblasts.

Why is the extracellular matrix important for skin?

The extracellular matrix provides the structural support, elasticity, and hydration that keep skin firm and resilient, and its gradual breakdown is associated with visible aging.

Related topics

• What Is a Humectant?
• What Is the Skin Barrier?
• The Extracellular Matrix

This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.