Ingredient guide
Dulse Peptide
palmaria palmata peptide
In short
Dulse peptide is a red‑algae–derived peptide rich in antioxidant phycoerythrin fragments. It supports barrier comfort and provides gentle firmness benefits.
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 Palmaria palmata (dulse); INCI peptide form distinct from palmaria or dulse extract entries; R-phycoerythrin-derived peptides from hydrolysis provide antioxidant and mild collagen-supportive activity; sustainably harvested cold-water red alga; applied in barrier and firmness formulas with a clean marine provenance story.
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
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Chlamydomonas (Chlamydomonas reinhardtii, Green Algae Repair Factor)
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Where to find it
MIRU hasn't verified a catalogue pick that leads with dulse peptideyet. The Lens can check any product you're considering.
Search the Lens for dulse peptideCommon questions
What does Dulse Peptide do for skin?
It offers antioxidant support, helps maintain barrier comfort, and provides mild collagen‑supportive benefits.
Is Dulse Peptide suitable for most skin types?
Yes, it is generally gentle and works for people seeking both barrier support and a subtle firmness boost.
How is Dulse Peptide used in skincare?
It appears in marine‑focused serums and creams aimed at hydration, barrier comfort, and firmness.
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Personal guidance, not medical advice.