Dry skin in winter: the real causes (and no, it is not just the cold)

Heating: the worst enemy of skin

Cold outside dries skin, that is well known. What is said less often is that indoor heating is often even more damaging. The hot, dry air of a heated room brings relative humidity below 30% — a level that forces the skin to continuously cede its water to the atmosphere. Adding a humidifier or simply plants in your bedroom can significantly change the sensation of skin comfort.

Hot showers that burn the skin barrier

A long shower with very hot water dissolves the natural lipids of the skin barrier. These lipids — ceramides, fatty acids, cholesterol — are essential for retaining water in the superficial layers of the skin. Once dissolved, skin feels tight, flakes, and reacts more easily to external irritants. Lowering the temperature a few degrees — or shortening shower time — is often more effective than adding another layer of moisturiser.

The stripping cleanser problem

In winter, many people use the same shower gel as in summer without adjusting the formula. A soap rich in sulphates, suited to warm-season use, can be too aggressive for skin already weakened by the cold. Having a dedicated bottle for a gentler, season-appropriate soap is a simple adaptation few people make. A clearly labelled dispenser — like the clean, readable models from Kuishi — helps maintain this organisation effortlessly.

Too many layers, too soon

Applying multiple layers of skincare at night is not problematic in itself, but some ingredient combinations block the absorption of subsequent layers. In particular, a very rich silicone-based cream applied before an active serum literally prevents that serum from penetrating. Order matters as much as product choice.

Flaking: a sign of a degraded barrier

The small skin flakes that form on cheeks or forehead in winter are not necessarily a lack of cream — they are often a sign that the skin barrier is damaged and rebuilding. Adding cream over a degraded barrier without first calming the inflammation is not enough. An ultra-gentle cleanser and a ceramide-based moisturiser are more effective in this case.

Diet: the underestimated factor

Essential fatty acids — Omega 3 and 6 — play a key role in the lipid structure of skin. A diet low in fatty fish, walnuts, flaxseeds or rapeseed oil can be read directly on the complexion in winter. No topical treatment compensates for a chronic nutritional deficit in good lipids.

What your shower ritual says about your skin

A well-thought-out bathroom, with season-appropriate products stored in clean, clearly labelled containers, is a concrete starting point for looking after yourself even during periods of winter fatigue. The most effective routine is the one you actually follow — not the one that requires too much thought.