Fibronectin is a high-molecular-weight glycoprotein of the extracellular matrix that mediates cell adhesion, migration, and tissue repair. In skincare it is used to support wound healing, fibroblast activity, and skin regeneration.
| Reported effect | How often | Notes |
|---|---|---|
Mild local irritation or redness | Uncommon | Transient, typically resolves after application |
Contact sensitization or allergic reaction | Rare | Possible immune response, as with other protein-based topicals |
Stinging at application site | Rare | More likely on compromised or broken skin |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.