Should Your Skincare Routine Change With the Seasons?

Cold air and indoor heating change how skin behaves, not just how it feels. Learn what actually shifts in winter, what signs suggest a routine needs adjusting, and what the research says about supporting skin through it.

What to know

• Cold outdoor air and dry indoor heating both pull moisture from skin, which is different from skin simply feeling cold.

• Frequent hot showers and hand washing add to moisture loss during colder months.

• Moisturizers work best when applied to slightly damp skin, since they're designed to lock existing moisture in rather than add it from scratch.

• Ingredients fall into a few functional categories, occlusives, humectants, and emollients, that address different parts of the same moisture-loss problem.

• Adjusting a routine seasonally is less about switching products entirely and more about recognizing when skin needs more support than usual.

A routine that works well in summer doesn't always hold up once the weather turns. That's not really about preference; it comes down to how differently skin behaves when the surrounding air changes. Understanding what's actually happening during colder months makes it easier to tell whether a routine needs adjusting or whether skin is just having an off week.

Why Skin Behaves Differently in Winter

Dry skin develops when skin loses more water and oil than it's able to replace, and several winter-specific conditions make that more likely. Cold, dry outdoor air is one factor; indoor heating systems that also dry out the surrounding air are another.¹ On top of that, common winter habits, like taking hotter, longer showers or washing hands more frequently during cold and flu season, add to how quickly skin's natural moisture gets stripped away.

What Changes in a Cold, Dry Environment

Two separate mechanisms are usually at work at the same time, one tied to the air outside and one tied to the air inside, and both pull moisture out of skin faster than in more humid months.

Lower Humidity Draws Moisture Out

When the air around skin is dry, water moves from the skin's surface into the surrounding environment more readily. This is a basic property of low-humidity air, not something specific to any one skin type, which is part of why dryness in winter is so widespread rather than limited to people who already have naturally dry skin.

Indoor Heating Adds to the Problem

Heating systems used to stay warm indoors tend to lower indoor humidity further, layering an artificial dry environment on top of the outdoor one.¹ The result is that skin can be losing moisture to dry air both outside and inside for most of the day during colder months, with little natural humidity to offset it either way.

Wind and Direct Cold Exposure

Direct exposure to cold, windy conditions adds a separate layer of stress beyond ambient dryness. Public health guidance on cold weather notes that exposed skin, particularly on the face, is more vulnerable in these conditions, and that redness or discomfort in exposed areas is often the first noticeable sign of the skin's response to cold.² 

This is a distinct concern from routine winter dryness, tied more to direct wind exposure than to indoor heating, but it reflects the same broader pattern: skin's environment changes more in winter than most people account for.

Signs Skin Needs a Different Approach

Aging skin already tends to produce less oil from its own glands, which the National Institute on Aging notes as a normal part of how skin changes over time.³ Layered on top of a dry winter environment, that can mean skin that felt adequately hydrated in warmer months starts to feel tight, flaky, or rough once temperatures drop. Rather than assuming a product has stopped working, it's worth considering whether the surrounding environment has simply changed enough to require more support than before.

What Ingredients Are Actually Doing

Moisturizing ingredients generally fall into three functional categories, and understanding the difference helps explain why some products hold up better in winter than others. Occlusive ingredients form a layer on the skin's surface that slows water evaporation. Humectants draw water into the skin's outer layer. Emollients fill in gaps between skin cells to smooth texture and reduce water loss through those gaps.⁴ 

A formula relying heavily on humectants alone can be less effective in low-humidity winter conditions, since humectants can pull water from the deeper layers of skin when there isn't enough moisture in the surrounding air, which is one reason pairing a humectant with an occlusive or emollient tends to matter more in winter than in a humid summer month.

What Actually Helps in Colder Months

Moisturizers work by combining these ingredient categories, and the guidance on timing matters as much as the ingredients themselves. Applying moisturizer to slightly damp skin, rather than fully dry skin, is generally recommended, since it helps lock in the moisture that's already there rather than trying to hydrate from a completely dry starting point.¹ This is typically recommended two to three times a day during drier conditions, more often than might be needed in a more humid season.

Where a Daily Routine Fits In

Because winter dryness is largely an environmental problem, the response doesn't necessarily need to be a completely different product lineup; it often just needs more consistent application of the same moisture-locking approach: humectants paired with occlusives or emollients, applied to damp skin, more frequently than in summer. 

A combined serum and moisturizer follows this same logic in a single step rather than two, since it pairs an active ingredient layer with a moisture-retention base in one application. Darkfin Labs' Longevity Protocol is one example of a product formulated with both humectant and lipid ingredients in a single formula, though the underlying principle, pairing ingredient categories and applying to damp skin, holds regardless of which specific product is used.

Final Words

Skin doesn't change because the calendar does; it changes because the air around it does. Lower humidity outdoors, drier heated air indoors, direct cold and wind exposure, and habits like hotter showers all pull moisture out faster than usual. Understanding what occlusives, humectants, and emollients each do, and applying them consistently to damp skin, is a more reliable response than assuming a product that worked all summer has simply stopped working once temperatures drop.

References

1. Dry skin - self-care. MedlinePlus, National Library of Medicine, National Institutes of Health.

2. Preventing Frostbite. Centers for Disease Control and Prevention.

3. Skin Care and Aging. National Institute on Aging, National Institutes of Health.

4. Harwood A, Nassereddin A, Krishnamurthy K. Moisturizers. In: StatPearls. StatPearls Publishing; 2024.