Glycosaminoglycans
Glycosaminoglycans — long chains of sugar molecules found in the extracellular matrix that attract and hold water, giving the dermis its cushioning and hydration. Hyaluronic acid is the best known example, and as a group they help maintain volume, lubrication, and the environment cells need to function.
Key points
- Glycosaminoglycans are large sugar-based molecules that bind water and fill space in the dermis.
- Hyaluronic acid is the most well-known glycosaminoglycan in skin.
- They contribute to hydration, cushioning, and the overall structure of the extracellular matrix.
- Many glycosaminoglycans attach to proteins to form larger molecules called proteoglycans.
- Their content in skin generally declines with age, affecting hydration and volume.
Frequently asked
How are glycosaminoglycans different from collagen?
Collagen is a fibrous protein that provides structural strength, while glycosaminoglycans are water-binding sugar molecules that fill the space between fibers and provide hydration and cushioning. Both are part of the extracellular matrix.
Are glycosaminoglycans used in skincare?
Yes, hyaluronic acid is the most common glycosaminoglycan in skincare, valued for its water-binding hydration. Others are less frequently featured but share similar moisture-holding properties.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
