Key takeaways
- Growth factors are larger proteins; copper peptides are small peptides.
- Both are used to support the look of firmer, renewed skin.
- Copper peptides are well studied, stable and widely accessible.
What they are
Growth factors are proteins, often derived from cell cultures, used in serums marketed for renewal. Copper peptides like GHK-Cu are much smaller molecules: a three-amino-acid peptide bound to copper.
Compared
| Copper peptides | Growth factors | |
|---|---|---|
| Size | Small | Large proteins |
| Source | Synthesised | Often cell-culture derived |
| Price | Moderate | Often premium |
| Focus | Firmness, renewal, barrier | Renewal, firmness |
Which to choose
If you want a well-understood, gentle ingredient with a long research history, copper peptides are a strong choice. Read what is GHK-Cu.
FAQ
Are copper peptides growth factors?
No. Copper peptides are small peptides; growth factors are larger proteins.
Can I use both?
Yes, they don't conflict.
Which is more gentle?
Both are generally well tolerated. Patch test anything new.
This article is for general information only and isn't medical advice. DOSE is a cosmetic product and is not intended to diagnose, treat, cure or prevent any disease. Individual results vary.