Ingredient guide
Pseudoalteromonas Ferment Extract
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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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.
Where it sits
Serums sit after toner and before moisturiser. Thinnest to thickest, water before oil.
- Cleanse
- Tone
- Pseudoalteromonas Ferment Extract
- Moisturise
- SPF
Also found as
Related
N-Eicosanoyl Phytosphingosine (Ceramide C20)
Barrier · Hydration
N-Lignoceroyl Phytosphingosine (Ceramide C24)
Barrier · Hydration
Nervonyl Phytosphingosine (Ceramide C24:1)
Barrier · Hydration
Oleoyl Phytosphingosine
Barrier · Hydration
Opuntia ficus-indica (prickly pear cactus) stem extract
Barrier · Hydration
Palmitoyl Phytosphingosine
Barrier · Hydration
Where to find it
Options across the range, not a ranking. Run one through Lens and MIRU will tell you if it fits you.
Peter Thomas Roth Water Drench Hyaluronic Cloud Cream
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Common questions
What does pseudoalteromonas ferment extract do for skin?
It helps attract and hold moisture while forming a soft, protective layer on the surface.
Who is this marine ferment best for?
Dry and sensitive skin often benefit from its hydration and barrier‑supportive feel.
How is it used in skincare?
It is commonly found in hydrating creams and serums for long‑lasting moisture and comfort.
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Personal guidance, not medical advice.