Gut-skin axis: when the microbiome accelerates or protects against skin aging
You may have noticed fine lines appearing earlier than expected. Skin that creases more noticeably upon waking, loses its radiance, or suddenly seems less plump.
Perhaps you have invested in very good skincare products without achieving all the results you hoped for. Or perhaps your skin alternates between dryness, blemishes, and redness, to the point where you no longer know what it truly needs.
Your first thought is probably the same as ours: what more could I apply?
A more concentrated serum. A richer cream. A new active ingredient.
But when skin ages faster than it should or remains inflamed despite a carefully designed routine, the answer is not always found solely in the bathroom cabinet.
Part of the story may begin much farther from the skin, amid the billions of bacteria living in our gut.
These microorganisms contribute to digestion, immunity, inflammation control, and the production of molecules that circulate throughout the body. When they work in harmony, they quietly contribute to our balance. When this ecosystem becomes depleted or disrupted, the skin may be one of the first places where the change becomes noticeable.
Not necessarily in the form of a visible disease.
Sometimes, the signal is subtler: skin that recovers more slowly, retains water less effectively, becomes more sensitive, or develops fine lines more quickly.
This is one of the reasons why science is increasingly interested in the gut-skin axis, or gut-skin axis.
What if, to optimize the results of our treatments, we also needed to understand the biological terrain on which they act?
When your skin seems to age faster than you
Skin aging is natural. Over time, collagen production slows, cell turnover becomes slower, and the skin has more difficulty retaining water.
But not all skin ages at the same rate.
Two people of the same age, exposed to a relatively similar environment, may show significant differences in firmness, radiance, and resilience. Genetics certainly plays a role. But it does not explain everything.
UV rays, pollution, smoking, stress, sleep, diet, hormonal fluctuations, and chronic inflammation also alter the skin’s trajectory.
This is where an essential concept comes in: inflammaging.
This term refers to a low-grade chronic inflammation that develops silently in the body and gradually contributes to tissue aging.
In the skin, this micro-inflammation can disrupt barrier function, increase oxidative stress, and activate enzymes involved in the breakdown of collagen and elastin.
At first, you may not see anything.
Then the skin begins to recover more slowly. It looks drier despite the application of a cream. Signs of fatigue linger longer. Dehydration lines deepen, and the complexion loses the radiance that once gave it a rested appearance.
The gut microbiome is not solely responsible for these transformations. But when it is imbalanced, it can contribute to the inflammatory environment in which they occur.
The gut-skin axis: an invisible conversation
The skin and the gut seem to belong to two different worlds. Yet they have a lot in common.
Both form a barrier between our bodies and their environment. Both host complex communities of microorganisms. Both communicate continuously with the immune system.
The gut is home to one of the largest microbial communities in the human body. These bacteria contribute to the transformation of certain nutrients, the production of vitamins and metabolites, and the maintenance of the intestinal barrier.
The skin also has its own microbiome, which varies according to facial area, sebum levels, humidity, pH, the seasons, and skincare habits.
These two ecosystems are distinct, but they are not independent.
They communicate through the blood, the immune system, hormones, the nervous system, and molecules produced by intestinal bacteria.
A scientific review published in 2025 describes the gut-skin axis as a bidirectional network in which the gut microbiome can influence skin health, particularly by modulating immunity, inflammation, and metabolism.
This dialogue explains why an imbalance in the gut can sometimes manifest elsewhere.
The skin does not exist in isolation. It receives, interprets, and expresses signals from the rest of the body.
The bacteria that help the skin without ever touching it
Certain intestinal bacteria feed on the fibers and plant compounds that our own digestive system cannot completely break down.
When they break them down, they produce short-chain fatty acids, including acetate, propionate, and butyrate.
These molecules contribute to the integrity of the intestinal barrier and the regulation of certain immune responses. They can also enter the bloodstream and contribute to biological exchanges in other parts of the body.
In other words, certain bacteria can influence the skin's environment without ever living on its surface.
When a microbiome is sufficiently diverse, the different microbial populations also tend to regulate one another. They occupy space, use available resources, and limit the excessive proliferation of less favorable microorganisms.
But when this ecosystem becomes depleted, certain functions may be performed less effectively.
The production of beneficial molecules may decrease. The intestinal barrier may become more vulnerable. Certain inflammatory signals may be amplified.
The skin then exists in a different biological environment: potentially more inflammatory, more oxidative, and less conducive to its natural ability to recover.
This does not mean that a wrinkle is caused by a missing bacterium. Skin aging is much more complex.
But if the skin must continually devote some of its resources to managing inflammation, it may have less capacity to preserve its barrier, maintain hydration, and repair daily damage.
Why an imbalanced microbiome can accelerate the signs of aging
Research is exploring several mechanisms that may link gut dysbiosis to premature skin aging.
Inflammation that silently becomes chronic
When communication between the microbiome and the immune system is disrupted, certain inflammatory pathways may remain activated longer than necessary.
In the skin, low-grade chronic inflammation may contribute to the gradual breakdown of collagen and elastin. It may also slow the repair of the skin barrier and make the skin more sensitive to external aggressors.
You may then feel that your skin “no longer recovers as it used to.”
One too-short night, a few days of stress, or exposure to the cold remain visible for longer.
A skin barrier that is harder to maintain
Inflamed skin often retains water less effectively. Its barrier becomes more permeable, allowing external aggressors to penetrate more easily.
The skin appears dry, but a rich cream is not always enough to permanently resolve the discomfort, because the problem is not solely a lack of oil or water. It also involves the barrier's ability to rebuild itself and remain stable.
Dehydration lines may then become more visible, sometimes giving the impression of more advanced aging.
More oxidative stress
Oxidative stress occurs when the production of free radicals exceeds the body's defense capabilities.
UV rays and pollution are two major sources of oxidative stress in the skin. But systemic inflammation may also contribute to this environment.
Over the long term, oxidative stress affects the lipids, proteins, and support structures of the skin. In particular, it contributes to collagen breakdown and the gradual loss of elasticity.
A less effective ability to adapt
Young skin is not simply skin without wrinkles.
It is skin capable of adapting: retaining water, repairing its barrier, calming inflammation, and quickly regaining its balance after an assault.
When the internal environment becomes less favorable, this ability to adapt may diminish.
The true sign of premature aging is therefore not always the first wrinkle. Sometimes, it is the point at which the skin begins to recover less effectively to its balanced state.
Fine lines, redness, blemishes: signs that are sometimes treated separately
We tend to attribute each skin manifestation to a different cause.
Fine lines would call for an anti-aging ingredient. Redness, a soothing treatment. Blemishes, an exfoliant. Dullness, vitamin C.
These responses may be relevant. But when several of these signs appear at the same time, it may be useful to look at the skin as a whole.
A weakened barrier can increase dehydration and make fine lines more visible. Persistent inflammation can cause redness while accelerating collagen breakdown. An overly aggressive routine can disrupt the skin microbiome, perpetuate blemishes, and reduce tolerance to anti-aging ingredients.
For some people, an intestinal imbalance may also contribute to this inflammatory state.
Differences in the gut microbiome have been observed in people with acne, atopic dermatitis, psoriasis, and rosacea.
A systematic review published in Gut Microbes describes several mechanisms that may link the gut microbiome to these conditions. Another review devoted to the gut-skin axis brings together the microbial imbalances observed in various skin conditions.
These data do not mean that all skin problems originate in the gut.
They teach us something more useful: the skin can reflect an imbalance involving several systems at the same time.
What Dr. William Davis teaches us about the bacteria that disappeared
This question of beneficial bacteria becoming less prevalent lies at the heart of the work of Dr. William Davis, cardiologist and author of Super Gut.
His approach is based on the idea that our modern lifestyle has profoundly transformed the human microbiome.
The repeated use of antibiotics, ultra-processed foods, chronic stress, lack of sleep, and the decline in fermented foods are thought to have gradually reduced the presence of certain microorganisms that were once more common.
Dr. Davis is particularly interested in Lactobacillus reuteri, or L. reuteri, a bacterial species studied for its potential interactions with the immune system, metabolism, and various biological mechanisms.
His work invites us to ask a different question.
Instead of looking only for what we need to eliminate, what if we also sought to understand what we have lost?
Research must nevertheless remain precise. The effects of a probiotic depend on the exact strain, dosage, duration of use, and individual factors. Two products containing a bacterium from the same species do not necessarily produce the same effects.
No probiotic can, on its own, recreate the full richness of a microbiome.
But the principle remains essential: our beneficial bacteria are not merely inhabitants of the gut. They contribute to our ability to remain balanced.
How can you further improve the results of your skincare?
If you already take care of your skin, understanding the gut-skin axis does not mean you have to abandon your routine.
This allows you to provide it with a more favorable environment.
Even with a perfectly balanced microbiome, the skin remains directly exposed to UV rays, pollution, cold, heat, and changes in humidity. Over time, it produces fewer of certain lipids, retains water less easily, and preserves its collagen less effectively.
A high-performance formula therefore continues to play an essential role.
It can strengthen the skin barrier, improve hydration, limit oxidative stress, support renewal mechanisms, and help the skin respond better to changes in its environment.
Inner balance and external skincare simply work at different levels.
Inner balance creates a more favorable foundation. An exceptional formula helps the skin make the most of its potential.
If you use excellent products but your skin remains inflamed, it does not necessarily mean you need to add another active ingredient. It may be wiser to understand what is preventing your skin from responding fully.
Sometimes, the barrier needs to be strengthened. Sometimes, exfoliation needs to be slowed down. Sometimes, sleep, diet, or stress management needs to be reconsidered. And sometimes, it is necessary to seek the advice of a healthcare professional to identify a cause that goes beyond the cosmetic field.
High-performing skin is not skin that receives the most products. It is skin whose different needs have been understood.
Supporting the microbiome without seeking perfection
The microbiome seems to appreciate what our modern lifestyle increasingly offers it less and less: diversity.
A varied diet, rich in fiber and plant foods when they are well tolerated, provides different substrates for intestinal bacteria. Fermented foods can also provide microorganisms and compounds produced through fermentation.
Sleep and physical activity also contribute to the overall balance of this ecosystem.
Probiotics can be beneficial, but choosing them requires precision. The word probiotic does not guarantee a benefit for the skin. Results always depend on the strain, dose, and individual.
The goal is not to create a perfect microbiome.
It is about cultivating an environment that is rich and resilient enough to adapt.
The same logic applies to the skin. A consistent routine that respects the barrier and is tailored to its actual needs will often be more effective than an accumulation of powerful active ingredients.
To better understand this local balance, also discover our article: Skin microbiome: why restore the skin before treating it?
A fascination that became a vision for Maison Sahéo
I have been interested in the gut-skin axis for several years.
At first, I was trying to understand why two people of the same age, using similar skincare, could achieve such different results.
Why some skin remains radiant and plump while other skin seems to show signs of aging more quickly. Why a routine transforms one person’s skin, while another’s remains inflamed or unpredictable despite carefully chosen products.
My research gradually led me to the microbiome, and then to the much broader dialogue between the skin, the gut, the immune system, stress, and our environment.
I am not a doctor, and my role is not to make a diagnosis. But I have devoted enough time to reading, comparing, and studying this research in depth to know that skin should never be observed independently of its history.
The products used matter. But so do the way the skin tolerates active ingredients, its level of inflammation, sleep, stress, and habits.
This reflection gave rise to the SAHÉO Advanced Skin Analysis.
It is not limited to classifying the skin as dry, oily, or combination. It makes it possible to examine its barrier, inflammation level, microbiome balance, tolerance to active ingredients, and habits that may influence its aging.
This analysis does not replace a medical consultation. It helps provide a better understanding of why the skin does not always respond as expected and how to build a more precise, coherent, and personalized routine.
Because before seeking to slow its aging, we must understand what accelerates it.
— Marina, founder of Maison Sahéo
The Maison Sahéo vision: preserving the skin’s ability to adapt
At Maison Sahéo, we do not view the skin as a succession of wrinkles, redness, or imperfections to be corrected separately.
We view it as a living organ, connected to the entire body and surrounded by an invisible ecosystem.
That is why we take a close interest in the skin microbiome, the gut microbiome, the gut-skin axis, and all the mechanisms that influence how the skin responds, adapts, and ages.
This approach does not pit inner health against cosmetic skincare. It seeks to bring together the conditions that allow the skin to express its full potential.
Tomorrow’s skincare will no longer seek only to temporarily smooth a visible sign.
It will help the skin preserve its barrier, resilience, and ability to adapt to the world around it.
An exceptional formula does not claim to replace biology. It creates the conditions that allow it to function better.
FAQ — Microbiome and skin aging
Can an imbalanced gut microbiome accelerate skin aging?
Gut dysbiosis can contribute to an inflammatory and oxidative environment that may influence the skin barrier and certain mechanisms associated with aging. However, it is only one factor among others, alongside UV exposure, genetics, stress, sleep, and hormones.
Can inflammation cause premature fine lines?
Chronic low-grade inflammation can weaken the skin barrier, increase dehydration, and contribute to collagen breakdown. It can therefore make certain fine lines more visible and reduce the skin’s ability to recover.
Can probiotics slow skin aging?
Certain probiotic strains have shown interesting effects on hydration, elasticity, or certain markers associated with photoaging. However, these results cannot be generalized to all probiotics.
Why does my skin remain dehydrated despite using a good moisturizer?
Dehydrated skin may lack water, but its barrier may also be compromised. Over-exfoliation, UV exposure, inflammation, the climate, and certain internal factors can prevent the skin from retaining hydration properly.
Can gut health replace anti-aging treatments?
No. Internal health creates favorable conditions, while topical treatments act directly on hydration, the skin barrier, oxidative stress, and visible signs of aging. The two approaches complement each other.
Scientific references
- Zhao Y. et al. The gut-skin axis: Emerging insights in understanding and treating skin diseases through gut microbiome modulation. 2025. PubMed
- Mahmud MR. et al. Impact of gut microbiome on skin health: gut-skin axis observed through the lenses of therapeutics and skin diseases. Gut Microbes. 2022;14(1):2096995. PubMed
- De Pessemier B. et al. Gut-Skin Axis: Current Knowledge of the Interrelationship between Microbial Dysbiosis and Skin Conditions. Microorganisms. 2021;9(2):353. PubMed
- Sinha S., Lin G., Ferenczi K. The skin microbiome and the gut-skin axis. Clinics in Dermatology. 2021;39(5):829–839. PubMed
- Salem I. et al. The Gut Microbiome as a Major Regulator of the Gut-Skin Axis. Frontiers in Microbiology. 2018;9:1459. PubMed
- Davis W. Super Gut: A Four-Week Plan to Reprogram Your Microbiome, Restore Health, and Lose Weight.Hachette Go, 2022. Presentation of the book by Dr. William Davis
The billions of bacteria behind your skin’s beauty
Gut-skin axis: when the microbiome accelerates or protects against skin aging
You may have noticed fine lines appearing earlier than expected. Skin that creases more noticeably upon waking, loses its radiance, or suddenly seems less plump.
Perhaps you have invested in very good skincare products without achieving all the results you hoped for. Or perhaps your skin alternates between dryness, blemishes, and redness, to the point where you no longer know what it truly needs.
Your first thought is probably the same as ours: what more could I apply?
A more concentrated serum. A richer cream. A new active ingredient.
But when skin ages faster than it should or remains inflamed despite a carefully designed routine, the answer is not always found solely in the bathroom cabinet.
Part of the story may begin much farther from the skin, amid the billions of bacteria living in our gut.
These microorganisms contribute to digestion, immunity, inflammation control, and the production of molecules that circulate throughout the body. When they work in harmony, they quietly contribute to our balance. When this ecosystem becomes depleted or disrupted, the skin may be one of the first places where the change becomes noticeable.
Not necessarily in the form of a visible disease.
Sometimes, the signal is subtler: skin that recovers more slowly, retains water less effectively, becomes more sensitive, or develops fine lines more quickly.
This is one of the reasons why science is increasingly interested in the gut-skin axis, or gut-skin axis.
What if, to optimize the results of our treatments, we also needed to understand the biological terrain on which they act?
When your skin seems to age faster than you
Skin aging is natural. Over time, collagen production slows, cell turnover becomes slower, and the skin has more difficulty retaining water.
But not all skin ages at the same rate.
Two people of the same age, exposed to a relatively similar environment, may show significant differences in firmness, radiance, and resilience. Genetics certainly plays a role. But it does not explain everything.
UV rays, pollution, smoking, stress, sleep, diet, hormonal fluctuations, and chronic inflammation also alter the skin’s trajectory.
This is where an essential concept comes in: inflammaging.
This term refers to a low-grade chronic inflammation that develops silently in the body and gradually contributes to tissue aging.
In the skin, this micro-inflammation can disrupt barrier function, increase oxidative stress, and activate enzymes involved in the breakdown of collagen and elastin.
At first, you may not see anything.
Then the skin begins to recover more slowly. It looks drier despite the application of a cream. Signs of fatigue linger longer. Dehydration lines deepen, and the complexion loses the radiance that once gave it a rested appearance.
The gut microbiome is not solely responsible for these transformations. But when it is imbalanced, it can contribute to the inflammatory environment in which they occur.
The gut-skin axis: an invisible conversation
The skin and the gut seem to belong to two different worlds. Yet they have a lot in common.
Both form a barrier between our bodies and their environment. Both host complex communities of microorganisms. Both communicate continuously with the immune system.
The gut is home to one of the largest microbial communities in the human body. These bacteria contribute to the transformation of certain nutrients, the production of vitamins and metabolites, and the maintenance of the intestinal barrier.
The skin also has its own microbiome, which varies according to facial area, sebum levels, humidity, pH, the seasons, and skincare habits.
These two ecosystems are distinct, but they are not independent.
They communicate through the blood, the immune system, hormones, the nervous system, and molecules produced by intestinal bacteria.
A scientific review published in 2025 describes the gut-skin axis as a bidirectional network in which the gut microbiome can influence skin health, particularly by modulating immunity, inflammation, and metabolism.
This dialogue explains why an imbalance in the gut can sometimes manifest elsewhere.
The skin does not exist in isolation. It receives, interprets, and expresses signals from the rest of the body.
The bacteria that help the skin without ever touching it
Certain intestinal bacteria feed on the fibers and plant compounds that our own digestive system cannot completely break down.
When they break them down, they produce short-chain fatty acids, including acetate, propionate, and butyrate.
These molecules contribute to the integrity of the intestinal barrier and the regulation of certain immune responses. They can also enter the bloodstream and contribute to biological exchanges in other parts of the body.
In other words, certain bacteria can influence the skin's environment without ever living on its surface.
When a microbiome is sufficiently diverse, the different microbial populations also tend to regulate one another. They occupy space, use available resources, and limit the excessive proliferation of less favorable microorganisms.
But when this ecosystem becomes depleted, certain functions may be performed less effectively.
The production of beneficial molecules may decrease. The intestinal barrier may become more vulnerable. Certain inflammatory signals may be amplified.
The skin then exists in a different biological environment: potentially more inflammatory, more oxidative, and less conducive to its natural ability to recover.
This does not mean that a wrinkle is caused by a missing bacterium. Skin aging is much more complex.
But if the skin must continually devote some of its resources to managing inflammation, it may have less capacity to preserve its barrier, maintain hydration, and repair daily damage.
Why an imbalanced microbiome can accelerate the signs of aging
Research is exploring several mechanisms that may link gut dysbiosis to premature skin aging.
Inflammation that silently becomes chronic
When communication between the microbiome and the immune system is disrupted, certain inflammatory pathways may remain activated longer than necessary.
In the skin, low-grade chronic inflammation may contribute to the gradual breakdown of collagen and elastin. It may also slow the repair of the skin barrier and make the skin more sensitive to external aggressors.
You may then feel that your skin “no longer recovers as it used to.”
One too-short night, a few days of stress, or exposure to the cold remain visible for longer.
A skin barrier that is harder to maintain
Inflamed skin often retains water less effectively. Its barrier becomes more permeable, allowing external aggressors to penetrate more easily.
The skin appears dry, but a rich cream is not always enough to permanently resolve the discomfort, because the problem is not solely a lack of oil or water. It also involves the barrier's ability to rebuild itself and remain stable.
Dehydration lines may then become more visible, sometimes giving the impression of more advanced aging.
More oxidative stress
Oxidative stress occurs when the production of free radicals exceeds the body's defense capabilities.
UV rays and pollution are two major sources of oxidative stress in the skin. But systemic inflammation may also contribute to this environment.
Over the long term, oxidative stress affects the lipids, proteins, and support structures of the skin. In particular, it contributes to collagen breakdown and the gradual loss of elasticity.
A less effective ability to adapt
Young skin is not simply skin without wrinkles.
It is skin capable of adapting: retaining water, repairing its barrier, calming inflammation, and quickly regaining its balance after an assault.
When the internal environment becomes less favorable, this ability to adapt may diminish.
The true sign of premature aging is therefore not always the first wrinkle. Sometimes, it is the point at which the skin begins to recover less effectively to its balanced state.
Fine lines, redness, blemishes: signs that are sometimes treated separately
We tend to attribute each skin manifestation to a different cause.
Fine lines would call for an anti-aging ingredient. Redness, a soothing treatment. Blemishes, an exfoliant. Dullness, vitamin C.
These responses may be relevant. But when several of these signs appear at the same time, it may be useful to look at the skin as a whole.
A weakened barrier can increase dehydration and make fine lines more visible. Persistent inflammation can cause redness while accelerating collagen breakdown. An overly aggressive routine can disrupt the skin microbiome, perpetuate blemishes, and reduce tolerance to anti-aging ingredients.
For some people, an intestinal imbalance may also contribute to this inflammatory state.
Differences in the gut microbiome have been observed in people with acne, atopic dermatitis, psoriasis, and rosacea.
A systematic review published in Gut Microbes describes several mechanisms that may link the gut microbiome to these conditions. Another review devoted to the gut-skin axis brings together the microbial imbalances observed in various skin conditions.
These data do not mean that all skin problems originate in the gut.
They teach us something more useful: the skin can reflect an imbalance involving several systems at the same time.
What Dr. William Davis teaches us about the bacteria that disappeared
This question of beneficial bacteria becoming less prevalent lies at the heart of the work of Dr. William Davis, cardiologist and author of Super Gut.
His approach is based on the idea that our modern lifestyle has profoundly transformed the human microbiome.
The repeated use of antibiotics, ultra-processed foods, chronic stress, lack of sleep, and the decline in fermented foods are thought to have gradually reduced the presence of certain microorganisms that were once more common.
Dr. Davis is particularly interested in Lactobacillus reuteri, or L. reuteri, a bacterial species studied for its potential interactions with the immune system, metabolism, and various biological mechanisms.
His work invites us to ask a different question.
Instead of looking only for what we need to eliminate, what if we also sought to understand what we have lost?
Research must nevertheless remain precise. The effects of a probiotic depend on the exact strain, dosage, duration of use, and individual factors. Two products containing a bacterium from the same species do not necessarily produce the same effects.
No probiotic can, on its own, recreate the full richness of a microbiome.
But the principle remains essential: our beneficial bacteria are not merely inhabitants of the gut. They contribute to our ability to remain balanced.
How can you further improve the results of your skincare?
If you already take care of your skin, understanding the gut-skin axis does not mean you have to abandon your routine.
This allows you to provide it with a more favorable environment.
Even with a perfectly balanced microbiome, the skin remains directly exposed to UV rays, pollution, cold, heat, and changes in humidity. Over time, it produces fewer of certain lipids, retains water less easily, and preserves its collagen less effectively.
A high-performance formula therefore continues to play an essential role.
It can strengthen the skin barrier, improve hydration, limit oxidative stress, support renewal mechanisms, and help the skin respond better to changes in its environment.
Inner balance and external skincare simply work at different levels.
If you use excellent products but your skin remains inflamed, it does not necessarily mean you need to add another active ingredient. It may be wiser to understand what is preventing your skin from responding fully.
Sometimes, the barrier needs to be strengthened. Sometimes, exfoliation needs to be slowed down. Sometimes, sleep, diet, or stress management needs to be reconsidered. And sometimes, it is necessary to seek the advice of a healthcare professional to identify a cause that goes beyond the cosmetic field.
High-performing skin is not skin that receives the most products. It is skin whose different needs have been understood.
Supporting the microbiome without seeking perfection
The microbiome seems to appreciate what our modern lifestyle increasingly offers it less and less: diversity.
A varied diet, rich in fiber and plant foods when they are well tolerated, provides different substrates for intestinal bacteria. Fermented foods can also provide microorganisms and compounds produced through fermentation.
Sleep and physical activity also contribute to the overall balance of this ecosystem.
Probiotics can be beneficial, but choosing them requires precision. The word probiotic does not guarantee a benefit for the skin. Results always depend on the strain, dose, and individual.
The goal is not to create a perfect microbiome.
It is about cultivating an environment that is rich and resilient enough to adapt.
The same logic applies to the skin. A consistent routine that respects the barrier and is tailored to its actual needs will often be more effective than an accumulation of powerful active ingredients.
To better understand this local balance, also discover our article: Skin microbiome: why restore the skin before treating it?
A fascination that became a vision for Maison Sahéo
I have been interested in the gut-skin axis for several years.
At first, I was trying to understand why two people of the same age, using similar skincare, could achieve such different results.
Why some skin remains radiant and plump while other skin seems to show signs of aging more quickly. Why a routine transforms one person’s skin, while another’s remains inflamed or unpredictable despite carefully chosen products.
My research gradually led me to the microbiome, and then to the much broader dialogue between the skin, the gut, the immune system, stress, and our environment.
I am not a doctor, and my role is not to make a diagnosis. But I have devoted enough time to reading, comparing, and studying this research in depth to know that skin should never be observed independently of its history.
The products used matter. But so do the way the skin tolerates active ingredients, its level of inflammation, sleep, stress, and habits.
This reflection gave rise to the SAHÉO Advanced Skin Analysis.
It is not limited to classifying the skin as dry, oily, or combination. It makes it possible to examine its barrier, inflammation level, microbiome balance, tolerance to active ingredients, and habits that may influence its aging.
This analysis does not replace a medical consultation. It helps provide a better understanding of why the skin does not always respond as expected and how to build a more precise, coherent, and personalized routine.
Because before seeking to slow its aging, we must understand what accelerates it.
— Marina, founder of Maison Sahéo
The Maison Sahéo vision: preserving the skin’s ability to adapt
At Maison Sahéo, we do not view the skin as a succession of wrinkles, redness, or imperfections to be corrected separately.
We view it as a living organ, connected to the entire body and surrounded by an invisible ecosystem.
That is why we take a close interest in the skin microbiome, the gut microbiome, the gut-skin axis, and all the mechanisms that influence how the skin responds, adapts, and ages.
This approach does not pit inner health against cosmetic skincare. It seeks to bring together the conditions that allow the skin to express its full potential.
Tomorrow’s skincare will no longer seek only to temporarily smooth a visible sign.
It will help the skin preserve its barrier, resilience, and ability to adapt to the world around it.
FAQ — Microbiome and skin aging
Can an imbalanced gut microbiome accelerate skin aging?
Gut dysbiosis can contribute to an inflammatory and oxidative environment that may influence the skin barrier and certain mechanisms associated with aging. However, it is only one factor among others, alongside UV exposure, genetics, stress, sleep, and hormones.
Can inflammation cause premature fine lines?
Chronic low-grade inflammation can weaken the skin barrier, increase dehydration, and contribute to collagen breakdown. It can therefore make certain fine lines more visible and reduce the skin’s ability to recover.
Can probiotics slow skin aging?
Certain probiotic strains have shown interesting effects on hydration, elasticity, or certain markers associated with photoaging. However, these results cannot be generalized to all probiotics.
Why does my skin remain dehydrated despite using a good moisturizer?
Dehydrated skin may lack water, but its barrier may also be compromised. Over-exfoliation, UV exposure, inflammation, the climate, and certain internal factors can prevent the skin from retaining hydration properly.
Can gut health replace anti-aging treatments?
No. Internal health creates favorable conditions, while topical treatments act directly on hydration, the skin barrier, oxidative stress, and visible signs of aging. The two approaches complement each other.
Scientific references