Ingredient guide
Nori Peptide
porphyra umbilicalis peptide
In short
Nori peptide comes from enzymatically processed nori seaweed and offers barrier support with mild anti‑glycation benefits. It may also provide small UV‑screening co‑benefits through its natural pigment‑linked components.
Reviewed against published evidence · editorially independent · no brand pays to be featured
Works for
Barrier · Firmness
Best used
Anytime
What it is
Peptide fraction from Porphyra umbilicalis (nori/purple laver); INCI peptide form distinct from any nori or porphyra extract entries; porphyran-adjacent peptide complexes from enzymatic hydrolysis show barrier-supportive and mild anti-glycation activity; MAA-containing fractions provide natural UV-screening co-benefit; emerging K-beauty marine ingredient.
What the evidence says
LimitedPeptidesapplied to skin
Early, encouraging evidence in relation to smoother-looking skin. A genuinely active research area.
Studied as palmitoyl-KTTKS.
Much of the evidence is small, split-face and manufacturer-sponsored.
See 2 sources
Palmitoyl-KTTKS is dermally stable and skin-permeable; relates to the type-I collagen precursor sequence.
skin permeation, dermal stability · palmitoyl-KTTKS
Int J Cosmet Sci, 2014Split-face trials report wrinkle/roughness improvement; evidence base modest and mostly manufacturer-led.
wrinkles, roughness
Cosmetics, 2017
Also found as
Related
Where to find it
MIRU hasn't verified a catalogue pick that leads with nori peptideyet. The Lens can check any product you're considering.
Search the Lens for nori peptideCommon questions
What does Nori Peptide do for skin?
It helps reinforce the barrier and may support more elastic, comfortable skin through antioxidant and anti‑glycation activity.
Is Nori Peptide suitable for sensitive skin?
It is generally gentle, though—as with all peptides—sensitivity varies so patch testing is reasonable.
How is Nori Peptide used in skincare?
It shows up in barrier and firmness‑oriented serums, especially in marine‑inspired K‑beauty formulas.
Stay in the loop
Get notified when MIRU launches and new features drop.
Unsubscribe anytime.
Checking a product label? Use the product checker to rate the full list against your current focus.
Personal guidance, not medical advice.