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From The Depths Of The Sea : Alteromonas Ferment Extract Benefits, Uses & Top Products


Looking for hydrated and radiant-looking skin? Discover Alteromonas ferment extract, a marine-derived ingredient made by fermenting Alteromonas bacteria.


Alteromonas thrives in seawater. Brands describe this extract as being created by marine microorganisms in the deep waters of the Iroise Sea in France. With its high molecular weight and good compatibility with the skin, it is used in skincare as a smoothing, skin-conditioning ingredient that can help skin look more lifted and plumper, and soften the look of lines. Brands highlight its role in supporting skin’s natural hyaluronic acid and giving an immediate smoothing effect.


What Is Alteromonas Ferment Extract?


Alteromonas ferment extract is a cosmetic ingredient derived from the fermentation of a type of marine bacteria called Alteromonas. It is used in skincare and cosmetic products for its skin-conditioning benefits and its ability to help improve the look and feel of the skin.



What Are The Benefits Of Alteromonas Ferment Extract?


The fermentation process produces compounds that are used for their hydrating, soothing and protective properties. They help to enhance the skin's moisture retention and support its barrier function. As a result, products containing Alteromonas ferment extract are often used to boost skin hydration, help soothe the look of redness and keep skin looking healthy.


Our Top Products With Alteromonas Ferment Extract


The Calm Balm is enriched with Pseudoalteromonas ferment extract to help seal in moisture and keep skin hydrated, comfortable and protected from dryness. A versatile multi-purpose rescue balm, it can be applied to lips, cuticles or dry patches on the face and body, to help protect skin from environmental stressors.



The Eyes Cream is designed for tired-looking eyes: ingredients such as Alteromonas ferment extract help the cream hydrate, and help skin around the eyes look firmer, brighter and less puffy. Used consistently, it is a radiance-boosting step for the eye area.



This lip serum is super hydrating and made for the lip area. It combines Pseudoalteromonas ferment extract with hyaluronic acid, so lips look plumped, softened and smoother after use.


Alteromonas Ferment Extract FAQs

What is Alteromonas ferment extract in skincare?

It is a cosmetic ingredient made by fermenting marine Alteromonas bacteria, used in skincare for its hydrating and skin-conditioning properties.

What does Alteromonas ferment extract do for skin?

It is used to help skin hold moisture, support the skin barrier and give a smoothing, plumping effect, so skin looks more hydrated and comfortable.

Is Alteromonas ferment extract suitable for sensitive skin?

It is commonly used in gentle, hydrating formulas, but everyone reacts differently. Patch test any new product first and stop if irritation occurs.

Which Skindays products contain it?

Our edit includes a multi-purpose balm, an eye cream and a lip serum, all featuring Alteromonas or Pseudoalteromonas ferment extract.

Shop the Alteromonas ferment extract edit.