Alteromonas Ferment Extract & Hyaluronic Acid: The Ultimate Hydration Duo
If you've followed ah-mee:skin for a while, there's a good chance you've heard me talk about Alteromonas Ferment Extract.
It's one of those skincare ingredients with a very complicated-sounding name — but a much simpler reason for being interesting:
Hydration.
And when you find it alongside one of skincare's best-known hydrating ingredients, Hyaluronic Acid, you have two ingredients that can play complementary roles within a hydrating skincare routine.
What is Alteromonas Ferment Extract?
Alteromonas Ferment Extract is a marine-derived cosmetic ingredient produced through the fermentation of microorganisms from the Alteromonas genus.
It is rich in polysaccharides — complex sugar molecules that are particularly interesting in cosmetic formulations because of their skin-conditioning and moisture-binding properties.
So although the science behind the name sounds complicated, the reason we love ingredients like this in skincare is much easier to understand:
They can help support skin that feels hydrated, conditioned and comfortable.
And what does Hyaluronic Acid do?
Hyaluronic Acid is probably a name you're much more familiar with.
It is a humectant, meaning it helps attract and retain water. That's why you'll find it in so many products designed to support hydration and leave skin looking plumper and smoother.
When skin is well hydrated, fine lines caused by dehydration can also appear less noticeable, helping the complexion look fresh and healthy.
Why use Alteromonas Ferment Extract and Hyaluronic Acid together?
This is where the pair becomes particularly interesting.
Rather than thinking of either ingredient as performing miracles on its own, think about how they contribute to the overall hydration and conditioning of the skin.
Hyaluronic Acid helps attract and retain moisture, while Alteromonas Ferment Extract provides complementary skin-conditioning properties.
Together within a well-formulated product, they can help support skin that feels:
Hydrated · Soft · Smooth · Comfortable
And that's something almost every skin type can appreciate.
Why does hydration matter?
Hydration isn't only important when your skin feels visibly dry.
When skin lacks water, it can feel tight and uncomfortable and dehydration lines may become more noticeable. Keeping your routine focused on gentle cleansing, hydration, moisturising and appropriate sun protection can help support the overall appearance and feel of your skin.
And importantly, dehydrated skin and dry skin aren't necessarily the same thing.
Dry skin generally lacks oil, whereas dehydrated skin lacks water — which means even combination or oilier skin can experience dehydration.
Understanding that difference can make choosing your skincare much easier.
Where can I find Alteromonas Ferment Extract at ah-mee:skin?
You'll currently find this ingredient in two ah-mee:skin favourites:
Anti-Age Day Cream
Part of our Radiance Collection, this daily moisturiser combines Alteromonas Ferment Extract with Hyaluronic Acid to support hydrated, smoother and healthy-looking skin.
Discover the Anti-Age Day Cream →
Hydrating Serum
For customers wanting to make hydration a more targeted part of their routine, our Hydrating Serum also contains Alteromonas Ferment Extract and can be incorporated into your daily skincare routine before moisturiser.
Discover the Hydrating Serum →
The Skin School Takeaway
Alteromonas Ferment Extract might not have the instant name recognition of Hyaluronic Acid — but that's exactly why it's an ingredient worth learning about.
Both can play valuable roles in a hydration-focused skincare routine, helping support skin that feels comfortable, conditioned and beautifully hydrated.
Because great skincare isn't about chasing complicated ingredient names.
It's about understanding what you're putting on your skin — and why. 🤍
Explore the Radiance Collection →
7 comments
Where can I purchase this please?
I would like to buy your fermented face cream. Is it possible to buy it in the UK please
I would like to purchase fermented skin care cream, do you send to UK
Many thanks
I want to purchase Alteromonas extract please
Do you sell Alteromonas Ferment Extract & Hyaluronic Acid