Key takeaways
- Peptides are short chains of amino acids.
- Main types: signal peptides, carrier peptides (like GHK-Cu) and expression-line peptides.
- Good peptide serums combine several types and disclose key concentrations.
Peptides in one line
Amino acids are building blocks; link a few together and you get a peptide. Link many and you get a protein, like collagen or elastin.
The main types
| Type | Example | Used for |
|---|---|---|
| Carrier peptides | GHK-Cu (copper peptide) | Delivering copper; renewal and firmness |
| Signal peptides | Palmitoyl tripeptide-5 | Supporting the look of firmness |
| Expression-line peptides | Acetyl hexapeptide-8 | Softening the look of movement lines |
| Calming peptides | Palmitoyl tetrapeptide-7 | Calming the look of redness |
Why they're popular
- They're generally gentle and well tolerated.
- They don't make skin sun-sensitive.
- They pair well with most other ingredients.
- Different peptides target different concerns, so they're easy to combine.
How to choose a peptide serum
See how DOSE combines seven: the 7 peptides in DOSE.
- Look for multiple peptides. One peptide covers one concern.
- Check for disclosed concentrations, like DOSE's 2% GHK-Cu.
- Go fragrance-free if your skin is sensitive.
- Commit to 6–8 weeks. Peptides reward consistency.
FAQ
Do peptides actually work?
Peptides are among the best-studied cosmetic ingredients. Results build gradually over several weeks of consistent use and vary by person.
Are peptides better than retinol?
They're different: peptides are gentler and can be used twice a day, while retinol is stronger but more irritating. Many people use both.
Can I use peptides every day?
Yes, most peptide serums are designed for twice-daily use.
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.