Winter Exfoliation Tips: How to Safely Remove Dry, Dead Skin

Flaky winter skin makes you want to scrub. Here is why that instinct is usually wrong, and how to exfoliate safely when the barrier is already stressed.

Why Dry Skin Looks Flaky

Shedding old skin cells is a controlled process, and the last step depends on water. When the environment is dry, the water content of the outer layer drops and the cells stop letting go of each other properly, so scales build up on the surface^[1]. Reviews describe the same step, called corneodesmolysis, as one that is often disturbed by environmental stress and leads to dry, flaky skin^[2]. In other words, in winter, flakiness is usually a hydration problem before it is an exfoliation problem.

Why Gentle Matters More in Winter

The outer layer you would be removing is also your barrier. In cold, dry weather that barrier is already weaker and skin is more reactive to irritants^[3]. That is why a routine that felt fine in the monsoon can sting in December. If you exfoliate in winter, do it less often and more gently than you would in other seasons. Our post on chapped skin covers restoring hydration first.

Physical or Chemical?

Physical exfoliation uses friction, such as scrubs, brushes or cloths. Chemical exfoliation uses hydroxy acids (AHAs, BHAs and the gentler PHAs) to loosen the bonds between surface cells^[4]. Chemical exfoliants work differently from a scrub: they loosen the bonds between cells instead of rubbing them off, and they have their own trade-offs. Friday's post covers them in detail.

Two cautions apply to both. First, hydroxy acids can make skin more sensitive to UV: in a trial, 10% glycolic acid at pH 3.5 applied for four weeks increased the skin's sensitivity to UV, and it returned to normal a week after stopping^[5]. Second, in darker skin tones irritation can leave dark marks, and reviews of post-inflammatory hyperpigmentation specifically warn about irritation worsening it^[6].

A Safe Winter Exfoliation Plan

• Start with once a week, and only if your skin is comfortable and not cracked or stinging.
• Pick one method at a time: a mild chemical exfoliant or a very gentle physical one, not both.
• Patch test on a small area first, especially if you have sensitive skin or tend to get dark marks.
• Moisturize afterwards, and avoid using other strong actives such as retinol on the same night.
• Wear sunscreen the next morning and every morning after.
• Stop and go back to basics if skin stings, turns red or starts to flake more.