What a silk pillowcase really does for your skin and hair

The claim sounds overblown: a pillowcase that transforms your skin and hair. On its own, it doesn't. But three effects are measurable — and when you spend seven hours a night on a pillow, they add up.

1. Less friction, fewer sleep creases

Cotton has a rough surface at a microscopic scale. Every movement tugs at the skin and presses folds into collagen that partly remain visible during the day. Silk — especially 22 momme — has a smoother surface. The skin glides, staying longer in its natural position.

2. Less hair breakage

The same principle applies to hair. Cotton tugs at the fibre, especially at the ends and on curly or treated hair. A silk case lets the hair slide. The result: fewer split ends, less frizz in the morning, curls that hold their shape.

3. Preservation of moisture and products

Cotton is hygroscopic — it draws in moisture. Including your evening cream and serums. Silk absorbs significantly less, allowing your nighttime routine to do what it should: stay on your skin, not disappear into your pillow.

No miracle, no substitute for skincare. But for anyone investing in a good sleep routine, a silk pillowcase is the most discreet upgrade you can make.