WOMEN'S HEALTH

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For the first time in 40 years: A French laboratory obtains authorization to reproduce and distribute the anti-aging science behind the "youthful" skin of Korean women over 50.

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Written by Isabelle Fontaine on May 17, 2026

Several recent studies highlight a frightening observation: French women over 50 spend, on average, more than 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 husbands, or even any man in daily life. 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 appearing on their features.

 

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

 

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

What is Korean bio-fermentation: the 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 absorbable than conventional cosmetic active ingredients, they send the necessary signals directly to skin cells to restart collagen production, which had stopped since menopause.

Archive image, Sake brewery

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

 

He mentioned it to his country doctor, who couldn't explain the phenomenon even after seeing it with his own eyes. It took nearly ten years of research to fully understand and replicate 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. But in return, it makes it possible to obtain an "anti-aging" effect that no cream produced in less than 48 hours (like about 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) not only transform the initial active ingredients. They also create new ones that were not present in the original formulation:

Bioactive peptides (collagen building blocks)

Free Amino Acids (cell repair)

Natural antioxidants (glutathione, B 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 big difference compared to a classic cream made in 48 hours, which only contains what was initially put into it.

2. Assets become recognizable through 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 uses it immediately.

 

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

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

Bio-fermented active: the skin recognizes it as familiar, integrates it without inflammatory reaction, and utilizes 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 uses it immediately.

 

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

3. Molecules become smaller and more absorbable

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

 

In practical terms, this means that the active ingredients reach the deeper layers of the skin, where collagen is produced by the cells. It is in this specific area that all visible facial aging after 50 years of age occurs.

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

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

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

Reinforcement signal to the skin barrier to help it rebuild

Balancing 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 35.

Erases the different signs of aging after 50

Visible transformation in 8 to 12 weeks

For example, here are the results observed in Marie-Hélène, 58, 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, the complexion has regained its uniformity, and the facial contour appears firmer and redefined.

 

This type of transformation, which would have required several in-office dermatology sessions at 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 it 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 totally inaccessible to most French women.

 

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

 

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

 

It is precisely this barrier that Serolys has decided to overcome. The French laboratory has entered into an exclusive partnership with one of the Korean leaders in cosmetic bio-fermentation, a laboratory that has mastered this process for more than 30 years. After 18 months of joint research, they succeeded in adapting the long-term fermentation protocol to the specificities of European menopausal skin, and in obtaining 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 great interest in this serum, and many of them now recommend it to their patients over 50.

 

So much so that several major pharmacy chains are currently vying for the right to distribute Serolys in their stores. However, the laboratory has chosen, for the moment, to remain its own sole distributor.

 

This choice of independence is simple to explain: 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 start 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 after 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 roughly the same price as in pharmacies in Seoul. Not 250 or 300 euros as with official resellers.

 

A risk-free 365-day empty bottle guarantee. You test the serum for a year, and if you are not satisfied, you return the bottle (even if completely used) and you are fully refunded.

 

Made in France, patented in Europe. The origin, traceability, and compliance of the product are guaranteed, unlike 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 intentionally light to penetrate instantly, without leaving a greasy film or sticky feeling. Makeup can be applied immediately afterward with no waiting time.

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

 

✅ Visible reduction of wrinkles and fine lines: nasolabial folds, barcode lines on the upper lip, forehead wrinkles, and eye contour wrinkles.

 

✅ Tightening effect on the oval of the face after 4 to 6 weeks of daily use.

 

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

 

✅ Restoration of natural radiance to the complexion, no more tired appearance or dull skin.

 

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

 

✅ Firmer neck skin, visible reduction of crepiness.

 

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

 

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

 

✅ Light and penetrating texture, with no 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 the Serolys Super C serum sold?

Serolys Super C serum usually retails 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 night.

Important announcement for our female readers!

For 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 not €49, but only €39.

 

If you would like to take advantage of this offer, you can click 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 quickly.

Check the 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 spent a fortune on pharmacy 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 my cheekbone spots fade. After 3 months, my hairdresser asked me if I had a dermatological treatment. I wholeheartedly 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 use bio-fermented serums from a young age. When I saw that a French brand had finally managed to patent this process, I jumped at the opportunity. The result exceeds my expectations. My skin is visibly brighter, firmer. My husband told me the other night that I looked 10 years younger. For 39 euros with a 365-day guarantee, there's no risk in trying."

★★★★★

Anne, 66 years old

Verified buyer

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

"I'm often skeptical when it comes to miracle serums, especially after fifty. But Serolys Super C really won me over. From the very first days, I appreciated its extremely light texture that absorbs instantly, without leaving a greasy film. After a month, my skin was visibly firmer and brighter. And after 2 months, the lines next to my mouth had significantly diminished. 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 dark spots, reduce wrinkles, or restore radiance to your face, 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 already using it and the favorable opinions of dermatologists, we wouldn't be surprised to see it in the bathrooms of many French women over 50 in the coming months.

How to get the real Serolys Super C?

Following the success of Serolys Super C serum in France, numerous counterfeits have appeared, particularly on platforms like Amazon and 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 on their official website. To do this, 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

Reduces 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 for daily use. In case of chronic pain, injury, or diagnosed medical 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 marketing claims. Results may vary from person to person. The experiences shared reflect personal opinions and do not guarantee any particular effect.

 

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