Why the cleansing routine that worked all summer starts failing the moment it gets cold

Why skin behaves differently across seasons in ways that affect cleansing specifically

Sebum production typically increases in warm, humid months and decreases in cold, dry months, while the skin barrier itself becomes more vulnerable to over-stripping in low-humidity winter air. A cleansing routine calibrated for summer's higher oil output — frequent double cleansing, stronger surfactants — can be genuinely too aggressive for the same skin in winter, when there's simply less oil to remove and the barrier has less natural resilience to spare.

The specific adjustment a fermented oil cleanser allows across seasons

A fermentation-based oil cleanser tends to be gentler on the skin barrier than standard mineral-oil or strong-surfactant formulas, partly because fermentation breaks down the formula's components into smaller, gentler molecules — making it a more forgiving year-round choice that doesn't need to be swapped out seasonally the way a stronger summer-calibrated cleanser might.

A practical seasonal cleansing adjustment without overhauling the whole routine

In summer, double cleanse daily as usual given higher sebum and SPF/makeup load. In winter, consider single-cleansing on days without heavy makeup or sunscreen, reducing how often the skin barrier is exposed to surfactant contact when it has less natural oil to spare. Watch for tightness, flaking or increased sensitivity as the season changes — these are signals to scale back cleansing intensity rather than push through with the unchanged summer routine.

ETUDE White Smile Fermented Cleansing Oil 150ml — available on BuyBeautyKorea →