Everything you need to know about the skin barrier
Posted by Ivatherm
The skin is the largest organ, accounting for approximately 15% of the total body weight. Composed of a vast and complex network of cells, proteins, ceramides, and lipids, the skin plays an essential protective role for the body, acting as a barrier against external factors.
The skin is made up of three main layers (epidermis, dermis, and hypodermis), which, in turn, are composed of sub-layers that perform unique, specialized functions.
The outer layer of the skin, which can be seen with the naked eye, is called the epidermis. It performs protective and defense functions. The main line of defense for the body is provided by the outer part of the epidermis, specifically the stratum corneum, also known as the skin barrier, moisture barrier, or lipid barrier.
Maintaining the skin's barrier function is more than an aesthetic concern; it is a way to ensure the protection and health of the entire body.
Table of Contents
What is the skin barrier?
An essential function of the skin is to form an efficient barrier between the body and the environment, acting in two ways:
inside – outside, by regulating water loss;
outside – inside, by protecting the body from pollutants, UV rays, microbes, viruses, and fungi.
Therefore, the skin barrier is not a physical element, but rather a function of the skin.
The stratum corneum is often compared by researchers to a brick wall. It is composed of cells called corneocytes, similar to bricks, connected by lipids (ceramides, cholesterol, and fatty acids), which perform the same role as mortar, uniting different elements. The stratum corneum also contains a protein called filaggrin, which helps with cell cohesion and strengthening of the barrier function, as well as the generation of components of the natural moisturizing factor. Each component of the stratum corneum is, therefore, vital for maintaining healthy skin.
Without this wall, various toxins and harmful pathogens can penetrate the skin and cause problems throughout the body.
The skin barrier has several roles, three of which are essential:
protects the body from external factors such as pollution and ultraviolet radiation;
prevents moisture loss (retains water), so that the body and skin remain well-hydrated;
ensures the transport of vital nutrients to the skin.
At the same time, the skin barrier is a determining factor for the skin's appearance. If it functions optimally, the skin barrier will retain water in the body, consequently, the skin will remain hydrated and maintain its elasticity and firmness. Also, because it will keep aggressive environmental factors (pollution, ultraviolet rays, viruses) at bay, the risk of skin sensitization and irritation will be reduced.
On the other hand, if the barrier function does not work properly, the skin can be dehydrated and dull due to transepidermal water loss, and the body will find it harder to fight and defend itself against free radicals, which can cause changes in the skin's texture and tone.
The skin barrier serves as a protective shield for the body. Practically, the entire purpose of the skin barrier is to protect the skin from environmental stressors, irritations, and inflammations, while retaining all beneficial elements (water, nutrients). In short, the skin barrier keeps good things inside the body and bad things out.
If the stratum corneum does not contain enough water, the skin will lose its elasticity, becoming dry, rough, and flaky. Also, poorly hydrated skin cannot maintain a skin barrier, leaving the skin more vulnerable to external factors.
Thus, the skin barrier is essential for overall health and must be protected to help the body function correctly.
Harsh skincare products, perfumes, and irritating chemicals can weaken the skin barrier. Also, excessive cleansing with soap and water, as well as washing with hot water, can affect the skin's barrier function. In addition to the skincare routine and environmental conditions, lifestyle influences the skin barrier.
Signs of a damaged skin barrier
Damage to the skin barrier can change how the outer layer of the skin presents itself.
These symptoms can be a warning sign that the skin's barrier function is disrupted, either due to external factors or because the skincare routine is ineffective.
Factors that weaken the skin's protective barrier
Daily, the skin fights numerous threats, many of which come from outside the body.
Among the external factors that can affect the skin barrier are:
an environment that is too humid or too dry;
temperatures that are too low or too high;
allergens, irritants, and pollutants;
prolonged exposure to ultraviolet rays;
exposure to harsh chemicals.
Many skin problems can be the result of lifestyle and an inefficient skincare routine. Thus, among the factors that play an important role in compromising the skin barrier are:
harsh detergents and alkaline soaps;
cosmetic products that strip the skin's natural oils;
excessive exfoliation and washing;
washing with hot water;
certain medications (e.g., steroids);
cigarette smoke;
psychological stress;
unhealthy foods;
lack of sleep.
On the other hand, genetic factors and the natural aging process can influence skin health. For example, skin conditions that cause inflammation – such as eczema, atopic dermatitis, rosacea, and psoriasis – can damage the skin barrier. Similarly, fine lines and wrinkles are a consequence of the natural aging process.
Thus, from genetics to lifestyle, numerous factors can affect the skin's barrier function. What is important to remember is that any stress factor, internal or external, that produces visible changes in the skin, can disrupt or damage the skin barrier. And this is because, although it is compared to a brick wall, the skin barrier is much more fragile and can be easily damaged by environmental factors, lifestyle, skincare routine, certain medical conditions, age, and genetics.
Restoring a damaged skin barrier
The good news is that damage to the skin barrier is not an irreversible process. The damage caused can be repaired, but it takes time and effort. Depending on the extent of the damage, it can take from a few weeks to six months for the skin to regain its barrier function.
Changing the skincare routine, avoiding harmful external factors (pollution, ultraviolet radiation), as well as adopting a healthy lifestyle that includes a diet rich in vitamins and minerals, a sleep schedule, and a low stress level, are measures that can help repair the skin barrier.
It is important to avoid exfoliants (retinol, AHA, BHA) during the skin barrier recovery period and to introduce emollient products with repairing, gentle, and soothing ingredients into the daily skincare routine.
Measures to protect the skin barrier
The skin barrier is the protective layer that defends the skin from external aggressors and prevents moisture loss. The more irritated and damaged the skin is, the less effective the skin barrier will be. From skincare routine to lifestyle, there are several measures that can be taken to protect and strengthen the skin's protective barrier.
Adhering to an effective skincare routine
When the skin barrier is not affected, the skin is luminous, firm, and healthy-looking. Because the skin is the first line of defense against external aggressors, it is important to protect it in turn. Adhering to a skincare routine and using products suitable for your skin type is one of the most effective ways to maintain barrier function.
First of all, the most important steps in the skincare routine must be followed every day:
Special attention should also be paid to skin exfoliation. Although the introduction of exfoliating products into the skincare routine is recommended to support cell regeneration, the frequency of their use plays an important role. Excessive exfoliation is a way to damage the skin barrier. Therefore, it is not advisable to use exfoliating ingredients every day, but once or twice a week.
Avoiding prolonged sun exposure
Strong UV rays can disrupt the skin barrier and accelerate aging. Also, ultraviolet radiation can be responsible for the appearance of pigment spots.
To maintain skin health, it is recommended to use products with sun protection factor SPF, with broad-spectrum coverage, avoid exposure to ultraviolet rays between 10:00 AM and 4:00 PM, wear long-sleeved blouses and long pants, and use protective accessories (sunglasses, wide-brimmed hats) to prevent UV rays from penetrating the skin. Although ultraviolet radiation is strongest in the warm season and special attention should be paid to sun protection, it is advisable to use SPF products even in cold seasons.
Adopting a healthy lifestyle
Research shows that a balanced diet, rich in fruits and vegetables, can maintain healthy skin. Among the beneficial foods for the skin are carrots, apricots, and other yellow and orange fruits and vegetables, green leafy vegetables such as spinach and kale, tomatoes, berries, beans, peas, and lentils, salmon, mackerel, and other fish that are high in Omega-3 fatty acids.
Also, rest is important for maintaining the skin's barrier function. Specialists recommend 7 to 9 hours of sleep every night.
Last but not least, stress is one of the factors that can damage the skin barrier. Limiting stressful tasks and engaging in activities that help the body and mind relax are important steps to having radiant skin and for the body to be protected against free radicals.
The outer layer of the epidermis, known as the skin barrier, has the role of defending the body against environmental threats, while preventing moisture loss from the skin. Dehydration, itching, and inflammation are signs of a damaged skin barrier. Changes in skincare routine and lifestyle can help strengthen and protect the skin barrier.
Echipa Ivatherm
Conținutul IvaStories este creat de echipa Ivatherm, brand romanesc de dermatocosmetice fondat de Dr. Rucsandra Hurezeanu. Produsele Ivatherm sunt formulate cu Apă Termală Herculane și sunt testate dermatologic, recomandate de medici specialiști.
Everything you need to know about the skin barrier
The skin is the largest organ, accounting for approximately 15% of the total body weight. Composed of a vast and complex network of cells, proteins, ceramides, and lipids, the skin plays an essential protective role for the body, acting as a barrier against external factors.
The skin is made up of three main layers (epidermis, dermis, and hypodermis), which, in turn, are composed of sub-layers that perform unique, specialized functions.
The outer layer of the skin, which can be seen with the naked eye, is called the epidermis. It performs protective and defense functions. The main line of defense for the body is provided by the outer part of the epidermis, specifically the stratum corneum, also known as the skin barrier, moisture barrier, or lipid barrier.
Maintaining the skin's barrier function is more than an aesthetic concern; it is a way to ensure the protection and health of the entire body.
Table of Contents
What is the skin barrier?
An essential function of the skin is to form an efficient barrier between the body and the environment, acting in two ways:
Therefore, the skin barrier is not a physical element, but rather a function of the skin.
The stratum corneum is often compared by researchers to a brick wall. It is composed of cells called corneocytes, similar to bricks, connected by lipids (ceramides, cholesterol, and fatty acids), which perform the same role as mortar, uniting different elements. The stratum corneum also contains a protein called filaggrin, which helps with cell cohesion and strengthening of the barrier function, as well as the generation of components of the natural moisturizing factor. Each component of the stratum corneum is, therefore, vital for maintaining healthy skin.
Without this wall, various toxins and harmful pathogens can penetrate the skin and cause problems throughout the body.
The skin barrier has several roles, three of which are essential:
At the same time, the skin barrier is a determining factor for the skin's appearance. If it functions optimally, the skin barrier will retain water in the body, consequently, the skin will remain hydrated and maintain its elasticity and firmness. Also, because it will keep aggressive environmental factors (pollution, ultraviolet rays, viruses) at bay, the risk of skin sensitization and irritation will be reduced.
On the other hand, if the barrier function does not work properly, the skin can be dehydrated and dull due to transepidermal water loss, and the body will find it harder to fight and defend itself against free radicals, which can cause changes in the skin's texture and tone.
The skin barrier serves as a protective shield for the body. Practically, the entire purpose of the skin barrier is to protect the skin from environmental stressors, irritations, and inflammations, while retaining all beneficial elements (water, nutrients). In short, the skin barrier keeps good things inside the body and bad things out.
If the stratum corneum does not contain enough water, the skin will lose its elasticity, becoming dry, rough, and flaky. Also, poorly hydrated skin cannot maintain a skin barrier, leaving the skin more vulnerable to external factors.
Thus, the skin barrier is essential for overall health and must be protected to help the body function correctly.
Harsh skincare products, perfumes, and irritating chemicals can weaken the skin barrier. Also, excessive cleansing with soap and water, as well as washing with hot water, can affect the skin's barrier function. In addition to the skincare routine and environmental conditions, lifestyle influences the skin barrier.
Signs of a damaged skin barrier
Damage to the skin barrier can change how the outer layer of the skin presents itself.
Signs of a disrupted skin barrier may include:
These symptoms can be a warning sign that the skin's barrier function is disrupted, either due to external factors or because the skincare routine is ineffective.
Factors that weaken the skin's protective barrier
Daily, the skin fights numerous threats, many of which come from outside the body.
Among the external factors that can affect the skin barrier are:
Many skin problems can be the result of lifestyle and an inefficient skincare routine. Thus, among the factors that play an important role in compromising the skin barrier are:
On the other hand, genetic factors and the natural aging process can influence skin health. For example, skin conditions that cause inflammation – such as eczema, atopic dermatitis, rosacea, and psoriasis – can damage the skin barrier. Similarly, fine lines and wrinkles are a consequence of the natural aging process.
Thus, from genetics to lifestyle, numerous factors can affect the skin's barrier function. What is important to remember is that any stress factor, internal or external, that produces visible changes in the skin, can disrupt or damage the skin barrier. And this is because, although it is compared to a brick wall, the skin barrier is much more fragile and can be easily damaged by environmental factors, lifestyle, skincare routine, certain medical conditions, age, and genetics.
Restoring a damaged skin barrier
The good news is that damage to the skin barrier is not an irreversible process. The damage caused can be repaired, but it takes time and effort. Depending on the extent of the damage, it can take from a few weeks to six months for the skin to regain its barrier function.
Changing the skincare routine, avoiding harmful external factors (pollution, ultraviolet radiation), as well as adopting a healthy lifestyle that includes a diet rich in vitamins and minerals, a sleep schedule, and a low stress level, are measures that can help repair the skin barrier.
It is important to avoid exfoliants (retinol, AHA, BHA) during the skin barrier recovery period and to introduce emollient products with repairing, gentle, and soothing ingredients into the daily skincare routine.
Measures to protect the skin barrier
The skin barrier is the protective layer that defends the skin from external aggressors and prevents moisture loss. The more irritated and damaged the skin is, the less effective the skin barrier will be. From skincare routine to lifestyle, there are several measures that can be taken to protect and strengthen the skin's protective barrier.
Adhering to an effective skincare routine
When the skin barrier is not affected, the skin is luminous, firm, and healthy-looking. Because the skin is the first line of defense against external aggressors, it is important to protect it in turn. Adhering to a skincare routine and using products suitable for your skin type is one of the most effective ways to maintain barrier function.
First of all, the most important steps in the skincare routine must be followed every day:
There are several ingredients that support the skin barrier and can be introduced into the skincare routine:
Special attention should also be paid to skin exfoliation. Although the introduction of exfoliating products into the skincare routine is recommended to support cell regeneration, the frequency of their use plays an important role. Excessive exfoliation is a way to damage the skin barrier. Therefore, it is not advisable to use exfoliating ingredients every day, but once or twice a week.
Avoiding prolonged sun exposure
Strong UV rays can disrupt the skin barrier and accelerate aging. Also, ultraviolet radiation can be responsible for the appearance of pigment spots.
To maintain skin health, it is recommended to use products with sun protection factor SPF, with broad-spectrum coverage, avoid exposure to ultraviolet rays between 10:00 AM and 4:00 PM, wear long-sleeved blouses and long pants, and use protective accessories (sunglasses, wide-brimmed hats) to prevent UV rays from penetrating the skin. Although ultraviolet radiation is strongest in the warm season and special attention should be paid to sun protection, it is advisable to use SPF products even in cold seasons.
Adopting a healthy lifestyle
Research shows that a balanced diet, rich in fruits and vegetables, can maintain healthy skin. Among the beneficial foods for the skin are carrots, apricots, and other yellow and orange fruits and vegetables, green leafy vegetables such as spinach and kale, tomatoes, berries, beans, peas, and lentils, salmon, mackerel, and other fish that are high in Omega-3 fatty acids.
Also, rest is important for maintaining the skin's barrier function. Specialists recommend 7 to 9 hours of sleep every night.
Last but not least, stress is one of the factors that can damage the skin barrier. Limiting stressful tasks and engaging in activities that help the body and mind relax are important steps to having radiant skin and for the body to be protected against free radicals.
The outer layer of the epidermis, known as the skin barrier, has the role of defending the body against environmental threats, while preventing moisture loss from the skin. Dehydration, itching, and inflammation are signs of a damaged skin barrier. Changes in skincare routine and lifestyle can help strengthen and protect the skin barrier.
Echipa Ivatherm
Conținutul IvaStories este creat de echipa Ivatherm, brand romanesc de dermatocosmetice fondat de Dr. Rucsandra Hurezeanu. Produsele Ivatherm sunt formulate cu Apă Termală Herculane și sunt testate dermatologic, recomandate de medici specialiști.