What Happens to Your Skin in Winter?
The Cult Essentials Expert Guide | Featuring Dr Sara Imani (@thepersianmedic)
During the colder winter months, many people experience noticeable changes in their skin. Dryness, tightness, irritation, and increased sensitivity are among the most common concerns raised in pharmacy and clinic settings at this time of year. Patients often report that products or routines that worked well in summer suddenly feel ineffective, or that their skin becomes reactive without any obvious trigger.
According to Dr Sara Imani, these changes are not coincidental. Winter conditions have a direct impact on how the skin functions, particularly when it comes to the skin barrier. Understanding what happens at a biological level helps explain why winter skin concerns are so common and why seasonal adjustments are often necessary.
Why Do Patients Commonly Ask About Winter Skin?
Skin concerns tend to become more noticeable in winter because environmental stress on the skin increases. Cold temperatures, wind, and changes in humidity all affect how well the skin can protect itself. As a result, patients often seek advice when they notice discomfort, flaking, redness, or irritation that they did not experience during warmer months.
In pharmacy settings, winter skin questions are especially common because symptoms often feel sudden or unexpected. Patients may worry that something is “wrong” with their skin, when in reality, these changes reflect a normal physiological response to seasonal conditions.
How Winter Weather Affects Skin Function
Dr Imani explains that winter weather is more aggressive on the skin. During colder months, the skin naturally produces less lipids and sebum.
Lipids and sebum are essential components of healthy skin. They form part of the outermost layer of the skin, helping to maintain its protective function. When lipid production is reduced, the skin becomes less effective at defending itself against environmental stressors.
This reduction in lipids is a key reason why winter skin behaves differently from summer skin.
The Role of Lipids in the Skin Barrier
The skin barrier acts as a protective shield between the body and the external environment. Lipids play a central role in maintaining this barrier. They help keep moisture within the skin and prevent external irritants from penetrating the surface.
When lipid levels are adequate, the skin barrier functions efficiently. However, Dr Imani explains that during winter, lipid production decreases. This weakens the barrier and makes the skin more vulnerable.
As lipid levels drop:
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The skin loses moisture more easily
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Protective function is reduced
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Sensitivity and irritation become more likely
This change in barrier integrity is one of the most important factors behind winter skin discomfort.
Trans-Epidermal Water Loss Explained
A key concept highlighted by Dr Imani is trans-epidermal water loss. This refers to the process by which water escapes from the skin through the outer layers.
When lipids are present on the surface of the skin, they help slow down water loss. However, when lipid levels are reduced, water is able to seep out more easily.
Dr Imani explains that when lipids are no longer present on the surface of the skin:
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Water escapes from within the skin
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External irritants are more likely to seep in
This imbalance disrupts the skin’s natural protective function and contributes to discomfort, dryness, and irritation.
What Is Skin Barrier Dysfunction?
When the skin barrier is compromised due to reduced lipid support and increased water loss, this is referred to as barrier dysfunction.
Barrier dysfunction does not mean the skin is damaged in a permanent way. Rather, it describes a temporary state in which the skin is less able to perform its protective role effectively.
This helps explain why winter skin often feels:
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Tight or uncomfortable
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Easily irritated
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Less resilient to environmental exposure
Barrier dysfunction is a physiological response to environmental stress, not a sign of poor skincare or personal neglect.
Why Irritation Is More Common in Winter?
When the skin barrier is weakened, irritants are able to penetrate the skin more easily. This increases the likelihood of irritation, even in individuals who do not normally consider their skin to be sensitive.
Patients may notice redness, itching, or discomfort in areas that previously felt normal. In pharmacy and clinic settings, it is important to reassure patients that these symptoms are common during winter and often reflect barrier changes rather than an underlying skin condition.
Understanding this process helps normalise winter skin symptoms and reduces unnecessary concern.
The Importance of Seasonal Skincare Changes
One of the key recommendations shared by Dr Imani is the importance of adapting skincare routines according to the season.
She explains that she always recommends having different skincare routines for summer and winter. This reflects the fact that the skin’s needs are not static throughout the year.
In warmer months, the skin typically produces more sebum and lipids, providing natural protection. In winter, when this production decreases, the skin requires additional support to maintain barrier function.
Seasonal adaptation is therefore a practical response to changing skin physiology.
Why “One Routine All Year” Often Falls Short
Many patients follow the same skincare routine throughout the year and become frustrated when it stops working in winter. Dr Imani’s explanation highlights why this happens.
The skin’s biology changes with the environment. Reduced lipid production and increased water loss mean that routines suited to summer conditions may no longer meet the skin’s needs in winter.
Recognising this helps patients understand that winter skin changes are not a failure of skincare, but a signal that the skin’s requirements have shifted.
A Pharmacy Education Perspective
From a pharmacy education standpoint, winter skin concerns provide an opportunity to explain barrier function in simple, practical terms. Helping patients understand concepts such as lipid reduction, water loss, and barrier dysfunction empowers them to approach seasonal skin changes with confidence.
Rather than focusing on quick fixes, education emphasises:
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Understanding why symptoms occur
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Setting realistic expectations
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Supporting long-term skin health
This approach aligns with evidence-based, patient-centred care.
Key Takeaways for Patients
Dr Imani’s explanation highlights several important points for patients experiencing winter skin changes:
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Winter weather places additional stress on the skin
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Lipid and sebum production naturally decreases
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Reduced lipids weaken the skin barrier
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Increased water loss leads to dryness and irritation
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Seasonal changes in skincare habits are often necessary
Understanding these principles helps patients feel more informed and reassured during colder months.
Final Thoughts
Winter skin concerns are a normal and common response to environmental changes. Reduced lipid production, increased trans-epidermal water loss, and barrier dysfunction explain why skin often feels more sensitive and uncomfortable during colder months.
By understanding what is happening beneath the surface, patients can approach winter skin changes with clarity rather than frustration. Education, awareness, and seasonal adaptation remain central to maintaining skin comfort and resilience throughout the year.
Expert Insight Provided By:
Dr Sara Imani
Medical Doctor
Instagram: thepersianmedic
Disclaimer
This article is for educational purposes only. Patients experiencing persistent, severe, or worsening skin symptoms should be advised to consult a pharmacist, GP, or qualified healthcare professional.