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Ingredient guide
pseudoalteromonas ferment extract
In short
Pseudoalteromonas ferment extract is a marine ferment rich in protective polysaccharides. It acts as a humectant film‑former, helping skin feel hydrated, cushioned, and better defended against dryness.
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Works for
Hydration · Barrier · Firmness
Skin type
Sensitive · Dry
Best used
Anytime
What it is
Ferment filtrate from Antarctic deep-sea bacteria; the organism produces exopolysaccharides that enable survival in extreme cold and hypersalinity; topically these polysaccharides act as film-forming humectants with potential thermal-protective barrier activity.
Also found as
Related
Where to find it
Peter Thomas Roth Water Drench Hyaluronic Cloud Cream
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Common questions
It helps attract and hold moisture while forming a soft, protective layer on the surface.
Dry and sensitive skin often benefit from its hydration and barrier‑supportive feel.
It is commonly found in hydrating creams and serums for long‑lasting moisture and comfort.
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Personal guidance only · For clinical concerns, see a dermatologist.