Ingredient guide
Pseudoalteromonas Ferment Extract
INCI name · 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.
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.
Evidence receipt
No linked study yet
No verified study is linked to this exact ingredient and route. The guidance below describes conventional use; it is not evidence of efficacy.
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
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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.