Why is my skin more sensitive in winter?

The serum is the same one you used all summer. Same bottle, same three drops, same step in the routine. Then one evening in January it stings for a full minute after you put it on, and your cheeks stay pink afterward. So why is my skin more sensitive in winter, when nothing in the routine changed? Because the air around your skin did, and your skin’s outer layer responds to that air faster than most people expect.

Why is my skin more sensitive in winter?

Cold, dry air weakens the skin’s outer barrier, so skin loses more water and reacts more easily to things that normally wouldn’t bother it. Heated indoor air adds to the effect.

A 2016 review by Danish and Dutch researchers pulled together the evidence on humidity, temperature and the skin barrier. It notes that people living far from the equator, including northern Europe and North America, face harsh winters and may experience dry, itchy skin. Their conclusion was direct: “low humidity and low temperatures lead to a general decrease in skin barrier function and increased susceptible towards mechanical stress.” The review adds a second layer. In cold, dry conditions, skin cells release inflammatory signals and the number of mast cells (immune cells that release itch-related chemicals) in the skin increases, so the skin also becomes more reactive to irritants and allergens.

That combination helps explain the sting: the barrier holds up less well, and the skin underneath is quicker to react.

What counts as sensitive skin?

Sensitive skin means unpleasant sensations, such as stinging, burning or itching, in response to things that shouldn’t cause them, with no visible skin disease to explain it. The skin can look completely normal while it feels this way.

That definition comes from an expert group of the International Forum for the Study of Itch, which used a structured consensus process to agree on it. They describe sensitive skin as “unpleasant sensations (stinging, burning, pain, pruritus, and tingling sensations) in response to stimuli that normally should not provoke such sensations,” and add that the skin may look normal or slightly red. If your skin only started reacting after a new acid or retinoid, our guide to what sensitized skin means explains how that differs.

Weather is one of the most commonly reported triggers. A 2013 overview in the International Journal of Cosmetic Science notes that people with sensitive skin report exaggerated reactions to cosmetics, soaps and sunscreens, and often report worsening after exposure to dry and cold climates. It also describes evidence that some of the most reactive people may have a thinner stratum corneum (the outer layer of skin), which lets more water-soluble chemicals pass through.

How does cold, dry air change the skin barrier?

It changes both how much water skin holds and how the outer layer is built. Lab studies show measurable changes within an hour, and seasonal studies show them across winter.

In a 2025 study on lab-grown human skin, one hour of low-humidity air increased water loss and let a test dye pass through the outer layer more easily. Levels of filaggrin and loricrin, two proteins that help form the tough outer envelope of skin cells, dropped. Cold had a similar effect in a 2022 study: human skin cells grown at 25°C rather than body temperature made less filaggrin and loricrin, and a temperature-sensing channel in the cells, TRPV1, was involved.

Seasonal measurements on people point the same way, with some noise. A Chinese study of 140 people, some with healthy skin and some with three types of sensitive skin, measured them in winter and summer. In all four groups, water loss through the skin, skin pH and blood flow in the skin differed significantly between the seasons. A Czech study of Central European women confirmed lower hydration and less oil on the skin in winter, while noting that seasonal data across studies are still inconsistent. Our piece on why skin gets so dry after showering covers the body side of the same problem.

Does indoor heating make skin more sensitive?

It can add to the effect, even over a single day. Heated air is dry air, and in one study six hours of it was enough to change several skin measurements.

In a 2023 split-face study from Korea, healthy women spent at least 6 hours a day in a heated indoor room during winter. After 6 hours, their facial skin showed more redness, roughness and visible pores, and water loss rose on the forearm. The side of the face treated with a ceramide cream fared better than the untreated side. The study was run by a company’s research institute, so read it as a measurement of the problem more than as proof of a particular product. For what ceramides do in the barrier, see do ceramides repair the skin barrier. Panthenol is another ingredient tested on deliberately irritated skin; see panthenol for dry, tight or irritated skin.

Why does skincare sting more in winter?

Because how much a product stings tracks the state of your barrier, and the barrier shifts with the season. A formula that sat quietly on summer skin can meet a different surface in winter.

In the Chinese seasonal study, the researchers used a lactic acid sting test to sort people by sensitivity. How strongly people felt stinging correlated with water loss through the skin, surface hydration and skin pH, the same measures that moved between winter and summer. That does not prove one caused the other, but it fits the experience of a product that was comfortable in summer and stings in winter.

If something new stings in winter, it may be the season rather than the product. Pause it, let your skin settle, and reintroduce it slowly. Our guide to introducing a new skincare product covers the pacing.

Editor’s note

When I lived in the UK, it was cold outside and dry inside. Moisture came first, and I built it up in layers rather than relying on one heavy cream. I watched for the fine lines dryness leaves and for skin that felt less firm. The habit that has stuck with me most is about water, though. I wash with warm water, never hot, and I wet my skin thoroughly before cleansing, because on dry skin almost anything stings. Oil cleanser is the one exception: that goes on with dry hands and a dry face. My lips are very dry, so they get attention too.

How should you change your routine for winter?

Simplify and moisturize: fewer new actives, a richer moisturizer, gentler cleansing, and more attention to the parts that dry out first. The goal is to give the barrier less to cope with while the air is working against it.

A few adjustments follow from the research above:

• Use warm, not hot, water to cleanse.
• Move to a richer moisturizer, especially if you spend long hours in heated rooms. Ceramide-containing creams were the ones tested in the indoor-heating study. If you are weighing a cica cream for winter redness, our guide to what a cica cream is explains what its label does and doesn’t tell you.
• Cut back on exfoliating acids or retinoids for a few weeks if they start to sting, then return to them gradually.
• Don’t skip lips. Our explainer on why lips get drier than skin explains why.
• Patch test anything new on a small area first while your skin is in its winter state.

If stinging, redness or itching continues after you simplify, or comes with visible rash or flaking, it is worth seeing a dermatologist rather than adjusting products further.

This article is for general cosmetic information and is not medical advice. If you have a skin condition, speak with a dermatologist.