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Ingredient guide
undaria pinnatifida peptide
In short
A marine peptide derived from wakame seaweed. It’s known for supporting skin elasticity and helping the barrier feel stronger over time. Common in advanced Korean and Japanese marine formulas.
Reviewed against published evidence · editorially independent · no brand pays for placement
Works for
Firmness · Barrier
Best used
Evening
What it is
Bioactive peptide fraction from Undaria pinnatifida (wakame seaweed); INCI peptide form distinct from undaria extract or powder entries; enzymatic hydrolysis yields pentapeptides and hexapeptides with matrix-metalloproteinase-inhibiting and pro-collagen activity; well-validated in K-beauty and Japanese marine cosmetics; elasticity and barrier repair profile.
Also found as
Related
Common questions
It supports a firmer, more elastic look and helps reinforce the skin’s barrier. Its peptide structure interacts with enzymes linked to collagen upkeep.
Most skin types can use it, especially those looking for a smoother, more resilient appearance. Its gentle marine origin tends to suit sensitive skin as well.
It’s usually found in serums or creams focused on elasticity or barrier support. It layers easily with hydrating and antioxidant products.
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Personal guidance only · For clinical concerns, see a dermatologist.