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Korean bio-fermentation: the anti-aging solution that makes you look 10 years younger naturally is finally coming to France

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Written by Isabelle Fontaine on May 17, 2026

Several recent studies highlight an alarming observation: French women over 50 spend an average of over 11,000 euros on anti-aging creams over 20 years, without seeing satisfactory results on their spots, facial contour, or radiance.

 

But the worst part isn't financial.

 

It's that feeling of gradually becoming invisible: Feeling sidelined at work in favor of younger colleagues, no longer attracting the desire and gaze of their husband, or any man on a daily basis. Some admit that when they look in the mirror in the morning, it's no longer their own face they recognize, but their mother's face gradually taking shape on their features.

 

Meanwhile, in Asia, and more specifically in South Korea, women aged 50, 60, 70 and older easily look 15 to 20 years younger than European women of the same age. And it's not thanks to cosmetic surgery, contrary to popular belief. But thanks to a cosmetic process that has become the absolute standard for 40 years in all pharmacies in Seoul: bio-fermentation.

 

This science, long kept away from the European market, is finally arriving in France. And for now, it's an unprecedented success.

What is Korean bio-fermentation: this natural process that can make your skin look 10 to 20 years younger?

Bio-fermentation is a process that involves fermenting cosmetic active ingredients for 60 to 90 days under precise temperature and humidity conditions.

 

During this time, microorganisms produce new living molecules, biologically similar to those the human body produces itself. Smaller and more easily absorbed than conventional cosmetic active ingredients, they directly send the necessary signals to skin cells to restart collagen production, which has ceased since menopause.

Archive image, Sake distillery

Its anti-aging effects were discovered by chance in the 1980s in a sake distillery. The factory owner was surprised that at over 60 years old, his female workers who dipped their bare hands in fermented rice all day still had baby soft hands, while their faces showed all the signs of their actual age.

 

He mentioned it to his country doctor, who couldn't explain the phenomenon even after witnessing it with his own eyes. It took nearly ten years of research to fully understand and reproduce this mechanism. Unsurprisingly, cosmetic laboratories seized upon this discovery to offer ready-to-use anti-aging serums.

How does bio-fermentation work and what are its concrete effects on the skin?

The effectiveness of bio-fermentation is based on four scientific pillars, documented for many years.

 

The manufacturing process is infinitely more complex because it involves allowing certain active ingredients to ferment under very precise temperature and humidity conditions for 60 to 90 days. However, it allows for an "anti-aging" effect that no cream produced in a factory in less than 48 hours (like approximately 99% of mass-market creams) can hope to achieve.

1. Fermentation produces new molecules

During the 60 to 90 days of fermentation, the microorganisms used (similar to those that turn milk into yogurt) do more than just transform the initial active ingredients. They create new ones that were not present in the original formulation:

Bioactive peptides (the building blocks of collagen)

Free Amino Acids (cellular repair)

Natural antioxidants (glutathione, B-group vitamins)

Organic acids (kojic acid, which acts on hyperpigmentation)

At the end of the process, the serum obtained is much richer in beneficial compounds than the initial raw material. This is the main difference from a classic cream made in 48 hours, which only contains what was initially put into it.

2. The active ingredients become recognizable by the skin

When a molecule is produced by a living biological process (fermentation), its chemical structure is very similar to that of molecules naturally produced by the human body. As a result, the skin no longer perceives it as a foreign substance to be filtered out. It recognizes it as a familiar element, welcomes it, and immediately uses it.

 

This is exactly the opposite of what happens with a conventional synthetic active ingredient:

Synthetic active ingredient: the skin perceives it as a foreign body, sometimes causing irritation or redness, and only partially utilizes it.

Bio-fermented active ingredient: skin recognizes it as familiar, integrates it without inflammatory reaction, and uses it to 100% of its potential.

When a molecule is produced by a living biological process (fermentation), its chemical structure is very similar to that of molecules naturally produced by the human body. As a result, the skin no longer perceives it as a foreign substance to be filtered out. It recognizes it as a familiar element, welcomes it, and immediately uses it.

 

This is exactly the opposite of what happens with a classic synthetic active ingredient:

3. The molecules become smaller and more absorbable

During long fermentation, large initial molecules break down into much smaller fragments. These fragments penetrate the upper layer of the skin (the stratum corneum and the hydrolipidic film) more easily than native molecules, which often remain trapped on the surface.

 

Specifically, this means that active ingredients reach the deeper layers of the skin, where collagen is produced by cells. This specific area is where all visible facial aging occurs after the age of 50.

4. The skin receives signals to wake up (postbiotics)

During fermentation, bacteria produce what are known as postbiotics: metabolic by-products that act as biological messengers. Once applied to the skin, these postbiotics send three types of signals:

Signals to fibroblasts (the cells that produce collagen) to resume their natural activity

Reinforcement signal to the skin barrier so that it can regenerate

Balance signal to the skin's microbiome (the good bacteria that protect it daily)

This mechanism explains why, after a few weeks of use, skin that seemed "dormant" since menopause gradually regains the self-repair capabilities it had at age 35.

Erase the different signs of aging after 50

Visible transformation in 8 to 12 weeks

As an example, here are the results observed in Marie-Hélène, 58 years old, after 2 and a half months of daily use of a bio-fermented serum.

 

Before use: clearly visible dark spots on the cheekbones, uneven and dull complexion, sagging jawline. After 10 weeks: spots have visibly faded, complexion has regained its uniformity, and facial contour appears firmer and redefined.

 

This type of transformation, which would have required several sessions of dermatological treatment in a clinic for a total cost of several hundred euros, becomes accessible at home thanks to bio-fermentation.

Serolys: the first French laboratory to patent a bio-fermented serum in Europe

If bio-fermentation has been the absolute standard in Korea for 40 years, why has it been completely absent from French shelves until now?

 

The answer lies in two facts.

 

First, Korean brands that master this process hardly ship to Europe. And the rare resellers who manage to import them charge exorbitant prices: a bottle sold for 40 euros in a Seoul pharmacy ends up costing 250, sometimes 300 euros once it arrives in France, which is five to ten times its original price. A cost that makes bio-fermentation completely inaccessible to the majority of French women.

 

Second, no European laboratory has bothered to replicate this process locally. And for good reason: launching a bio-fermented serum in France involves an extremely long and regulated process. First, authorization must be obtained from European health authorities for this unprecedented type of protocol, then active ingredients must be immobilized for 60 to 90 days in fermentation tanks before even a single bottle can be marketed.

 

Economically, this is a gamble that no major group has been willing to take until now. It is so much simpler to continue selling classic anti-aging creams made in 48 hours, which French women have been buying on pharmacy shelves for decades anyway.

 

It is precisely this barrier that Serolys has decided to overcome. The French laboratory has formed an exclusive partnership with one of the Korean leaders in cosmetic bio-fermentation, a laboratory that has mastered this process for over 30 years. After 18 months of joint research, they successfully adapted the long-term fermentation protocol to the specificities of menopausal European skin, and obtained the first European patent for a bio-fermented serum.

 

The result is called Serolys Super C. Made in France, patented in Europe, sold directly by the brand without intermediaries.

French pharmacists are now clamoring for Serolys Super C

Since the launch of Serolys in France, pharmacists and dermatologists have shown massive interest in this serum, and many of them now recommend it to their patients over 50.

 

To such an extent that several major pharmacy chains are currently vying for the right to distribute Serolys on their shelves. However, the laboratory has chosen, for the moment, to remain its sole and exclusive distributor.

 

This choice of independence is simple: it is precisely what allows Serolys to guarantee both an extremely competitive price of €49 (instead of the €80 to €150 it would inevitably reach with distributor margins) and the quality of each bottle sold, which comes directly from the French laboratory, without risk of counterfeiting, low-cost substitutes, or parallel stock.

Why is Serolys so successful at the beginning of 2026?

In just a few months, Serolys has become one of the most talked-about anti-aging serums on forums and Facebook groups dedicated to women over 50 in France. There are several reasons for this.

 

Real effectiveness, not a marketing promise. Unlike classic creams that act on the surface, Serolys Super C reaches the deep dermis and directly stimulates natural collagen production.

 

Users see visible results in as little as 6 to 8 weeks of use. A fair price, without intermediaries. Sold directly by the brand, without going through distributors or resellers, the bottle is offered at 49 euros, which is about the same price as in pharmacies in Seoul. Not 250 or 300 euros like from official resellers.

 

A risk-free 365-day empty bottle guarantee. You test the serum for a year, and if you're not satisfied, you return the bottle (even if completely used) and get a full refund.

 

Made in France, patented in Europe. The origin, traceability, and compliance of the product are guaranteed, unlike the parallel imports found on Amazon that are now flooding the market.

An easy-to-use serum that replaces your entire anti-aging routine

One of the strengths of Serolys Super C is that it alone replaces all the anti-aging serums and creams typically used by women over 50: vitamin C serum, anti-spot treatment, redensifying cream, eye contour treatment, etc.

 

Three drops in the morning on clean skin, three drops in the evening before bed. That's all.

 

The texture is deliberately light to penetrate instantly, without leaving a greasy film or sticky sensation. You can apply your makeup right after without any waiting.

Here is a summary of the benefits observed by Serolys Super C users:

 

✅ Visible reduction of wrinkles and fine lines: nasolabial folds, upper lip "barcode" lines, forehead wrinkles, and crow's feet.

 

✅ Firming effect on the facial oval from 4 to 6 weeks of daily use.

 

✅ Reduction of pigment spots on the face, neck, décolleté, and back of the hands.

 

✅ Restoration of natural radiance, no more tired-looking and dull complexion.

 

✅ Less droopy eyelids, a more open and rested look.

 

✅ Firmer neck skin, visible reduction of crepiness.

 

✅ 24-hour deep hydration thanks to low molecular weight hyaluronic acid.

 

✅ Natural collagen stimulation by bio-fermented active ingredients in 60 to 90 days.

 

✅ Light and penetrating texture, without a greasy film or sticky sensation.

 

✅ Suitable for all skin types, including sensitive and reactive skin.

 

✅ Paraben-free, alcohol-free, fragrance-free: pure formula suitable for menopausal skin.

 

✅ Dermatologically tested on menopausal European skin.

 

✅ Made in France in a certified laboratory.

 

✅ First European patent for a long-lasting bio-fermented serum.

 

✅ 365-day empty bottle guarantee, full refund without conditions.

At what price is Serolys Super C serum sold?

Serolys Super C serum usually sells for €49 in France, which is already very reasonable compared to the €250 to €300 charged by resellers of Korean brands.

 

This price may seem high for a serum, but it turns out to be an excellent investment for long-term skin health. Especially since the 30 ml bottle lasts about 2 months with daily use, morning and evening.

Important announcement for our female readers!

To celebrate Mother's Day, Serolys has agreed to offer our readers an exclusive deal: 100 20% discount coupons for the Super C serum.

 

This means you can get a bottle of Serolys Super C for only €39 instead of €49.

 

If you wish to take advantage of this offer, you can click on the button below to check availability. But we recommend you don't wait too long, as over 80,000 of you read our articles every week, so the coupons are likely to go fast.

Check price and availability of Serolys serum

They're already using it, here's what they think

★★★★★

Emilie, 57

Verified buyer

My spots are finally fading after years of waiting

"For years I was spending a fortune on drugstore vitamin C serums without ever seeing any results. A friend told me about Serolys Super C, saying it was made with Korean bio-fermentation. At first I was skeptical, but after 6 weeks I started to see the spots on my cheekbones fade. At 3 months, my hairdresser asked me if I'd had a treatment with a dermatologist. I highly recommend it to all my friends my age."

★★★★★

Catherine, 62 years old

Verified buyer

My husband told me I looked 5 years younger

"My daughter-in-law is Korean and had always told me that Korean women have been using bio-fermented serums since they were young. When I saw that a French brand had finally managed to patent this process, I jumped at the chance. The result exceeded my expectations. My skin is visibly brighter, firmer. My husband told me the other night that I looked 10 years younger. At 39 euros with a 365-day guarantee, there's no risk in trying it."

★★★★★

Anne, 66

Verified Buyer

Skeptical at first, I couldn't do without it today

"I'm often skeptical when it comes to miracle serums, especially once you're past fifty. But Serolys Super C really won me over. From the very first days, I appreciated its extremely light texture that absorbed instantly, without leaving a greasy film. After one month, my skin was visibly firmer and brighter. And after 2 months, the lines next to my mouth were significantly reduced. I've been using it daily for 6 months now and I couldn't do without it."

Conclusion: Is it a good idea to use Serolys Super C daily?

100% Yes. Whether you're simply looking to care for your menopausal skin, fade hyperpigmentation spots, reduce wrinkles, or restore radiance to your face, the Serolys Super C bio-fermented serum seems to offer much better results than most conventional anti-aging creams sold in French pharmacies.

 

Given the numerous positive reviews from women who already use it and the favorable opinion of dermatologists, we wouldn't be surprised to see it in the bathrooms of many French women over 50 in the coming months.

How do I get the real Serolys Super C?

Following the success of Serolys Super C serum in France, many counterfeits have emerged, particularly on platforms like Amazon or foreign websites. These counterfeits generally do not contain the bio-fermented active ingredients and therefore offer no benefit for your skin.

 

But don't be fooled. The only way to obtain the real Serolys Super C, patented in Europe and manufactured in France, is to order from their official website. To do so, you can click on the button below to check availability.

 

The Serolys Super C serum also comes with a 365-day money-back guarantee that allows you to get a refund even if the bottle is empty, without any justification, if you are not satisfied with the result.

Check the price and availability of Serolys serum

Serolys Super C Bio-Fermented Serum

90-day Bio-Fermentation

Fades spots and wrinkles

Made in France

Patented in Europe

365-day warranty

Check price and availability

Medical Disclaimer: This product is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease. It is a comfort and support accessory intended for daily use. In case of chronic pain, injury, or diagnosed condition, always consult a qualified healthcare professional before use.

 

Marketing Disclaimer: This article is a sponsored publication for informational and promotional purposes. It may contain testimonials or claims for marketing purposes. Results may vary from person to person. The experiences shared reflect personal opinions and do not guarantee any particular effect.

 

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