Skip to product information
Skin Booster Bio-Fermented Serum with Äio RedOil, Hyaluronic acid, algae and Black Currant Seed oil
£69.93 GBP
Taxes included.
Shipping calculated at checkout.
Pickup currently not available
A world first! The Skin Booster Serum is the first product ever made with ÄIO RedOil. ÄIO RedOil is an upcycled ingredient – a fermented oil derived from organic side-stream.
A silky, fast-absorbing facial serum that brings together the strength of the sea and the forest. Formulated in synergy with Nordic and marine algae, this serum helps restore skin elasticity while delivering deep hydration, soothing care, and daily protection. The result is skin that feels soft, balanced, and visibly healthier.
At the heart of the formula is ÄIO’s RedOil, derived through the fermentation of upcycled forestry by-products and inspired by nature’s most efficient processes. RedOil is a natural non-irritant alternative to retinol with strong cell renewing properties whilst supporting skin’s natural barrier. It is rich in antioxidants, helps reduce redness and strengthens the skin against environmental stressors.
Cold-pressed black currant seed oil complements the formula with essential fatty acids, including gamma-linolenic acid, helping to calm inflammation, support regeneration, and reinforce the skin’s natural barrier. Suitable for both sensitive and acne-prone skin.
Low molecular weight hyaluronic acid provides multi-level hydration, leaving the skin plump, smooth, and deeply moisturised. A blend of Natural Moisturising Factors (NMF), including Sodium PCA, urea, and amino acids, supports long-lasting hydration and skin balance.
Niacinamide (Vitamin B3) enhances the formula by improving skin tone, reducing redness, and promoting a more even, radiant complexion.
Usage: Apply a few pumps of the serum to clean skin before cream, both morning and evening.
Vegan, 100% natural / 100% cruelty-free / travel-friendly / sustainable / hand made / palm oil & paraben free
Deep, multi-level hydration
Supports skin barrier and elasticity
Helps reduce redness and improve skin tone
Antioxidant protection against environmental stress
Suitable for sensitive, acne-prone, and mature skin
Quantity: 50 ml
Made in Estonia
Ingredients: Aqua, Sargassum Fluitans/Natans Extract, Rhodotorula Oil, Pentylene Glycol, Niacinamide Lactobacillus Ferment, Glycerin, Ribes Nigrum Seed Oil, Lactic Acid, Furcellaria Lumbricalis Extract, Xanthan Gum, Sodium Hyaluronate, Lactobacillus, Cocos Nucifera Fruit Extract, Sodium PCA, Sodium Lactate, Fructose, Glycine, Urea, Inositol, Sodium Phytate, Alcohol, Sodium Levulinate, Potassium Sorbate, Tocopherol, Helianthus Annuus Seed Oil.
SHIPPING + RETURNS
THE RATHER IMPORTANT BITS
This rather lovely piece ships directly from our brand partner - we work with independent brands who are absolutely brilliant and work frightfully hard to create beautiful things.
SHIPPING DESTINATIONS
Now, here's the thing - our wonderful brand partners ship to lots of different places, but not all of them can ship worldwide.
Some are brilliant at international shipping, others prefer to keep things closer to home.
At checkout, you'll see exactly where this particular brand can send your goodies.
We're terribly sorry, but shipping costs do vary rather wildly depending on where you are in the world. The exact figures pop up at checkout - no nasty surprises!
RETURNS
You have 14 days to return items.
Now, we absolutely adore our brand partners - they work incredibly hard and we do try to support them as much as we possibly can. So I'm rather afraid we have to pass the return postage costs back to you. Frightfully sorry about that!
🌍 PLEASE CHOOSE THOUGHTFULLY:
Our wonderful partners put their hearts into everything they make.
Ordering multiple sizes to try at home is rather hard on our planet and makes things jolly difficult for these brilliant independent creators.
When in doubt, do ask us first!
PAYMENT
We're frightfully modern and accept all the usual suspects:
Visa, Mastercard, American Express, PayPal, Apple Pay, Google Pay, and Shop Pay
SECURE AS HOUSES
Everything's properly encrypted and secure - your details are safer than the Crown Jewels!
All prices in lovely British pounds £ GBP, though international chaps will see converted prices.
Any payment pickle? We're here to help sort things out! Contact us
We Have Lots More Like This.........
Hello, we are Sostter....
Sostter began, as all good ideas do, with a lively conversation and a shared sense of frustration. Why had the world of independent design become so serious, so samey, so… beige? Where was the spark, the imagination, the sheer joy of discovering something that made you stop and stare?
We dreamt of a marketplace that celebrated difference — where curious minds could explore a world of independent brands, design-led makers, and thoughtful artisans. A space that felt exciting, human, and beautifully imperfect. Today, Sostter brings together remarkable people and their creations — from London to Lausanne, Brooklyn to Berlin — uniting makers and discoverers through craftsmanship, creativity, and conscience.
Every object tells a story, and every purchase supports an independent brand doing things differently. Explore our British makers, discover sustainable brands, browse women-led businesses, find the perfect gift for her, or simply wander through our new arrivals and see what finds you.
This is just the beginning. But enough about us — read all about us, or step inside and see what catches your imagination.