Glossary

Peptides

Also known as: Oligopeptides, acetyl hexapeptide-8

In short

Peptides are short chains of amino acids, the building blocks of proteins such as collagen. In skincare they help skin look smoother and firmer over time, which is why they are common in eye creams and balms.

How do you find peptides on a label?

Their ingredient names end in -peptide, often with a number for how many amino acids they have: acetyl hexapeptide-8 has six, tripeptide-10 has three.

When will you see a difference?

Peptides work gradually, so give them several weeks of regular use. The KAHI Eye Balm combines acetyl hexapeptide-8 with salmon PDRN and collagen. In its 4-week study, frown lines between the brows looked 15% smoother, measured with 3D skin imaging in 21 women. The result is for the whole formula, not for one ingredient. See the study

Peptides, PDRN or hyaluronic acid?

They do different jobs: hyaluronic acid adds water for instant plumpness, PDRN helps skin look hydrated and bouncy, and peptides help it look smoother and firmer over time. Many formulas combine them. Compare them in What is PDRN in skincare?

Where you'll find it

Eye careEye Balm 4.8 (214)

A lighter formula for the eye area

£24.99

See the full ingredients
TintedHan Gyob Cream

A sheer, skin-first tinted moisturiser

£24.99

See the full ingredients

Frequently asked questions

Can I use peptides around the eyes?

Yes, in products made for the eye area. The KAHI Eye Balm combines acetyl hexapeptide-8 with salmon PDRN and collagen and was tested around the eyes.

Can I use peptides with vitamin C or retinol?

Generally yes. Peptides are easy to combine with most skincare. If your skin feels sensitive, use stronger products at a different time of day.

Sources and references

  1. Topical peptide treatments with effective anti-aging results. Schagen S.K., Cosmetics, 2017.
  2. KAHI Eye Balm 4-week study, report PNK-26305-K1R (21 women aged 29–59; Antera 3D skin imaging). P&K Skin Research Center, Seoul, 2026.