Sleeping Mask (Overnight Mask)

A sleeping mask, also called an overnight mask, is a leave-on treatment applied as the final step of an evening routine and left on the skin through the night rather than rinsed off. It usually replaces or layers over the regular night moisturiser and is washed away in the morning.

Most sleeping masks are built to hydrate and seal. They combine humectants that hold water with emollients and light occlusive ingredients that slow moisture loss while the skin rests, so the surface stays supple until morning. Some versions add soothing or brightening ingredients, but the core purpose is deeper overnight hydration and a plumper, smoother look on waking. Textures range from bouncy gels to richer creams.

They are typically used a few nights a week rather than every night, and suit dry, dehydrated, or dull skin, or anyone whose skin feels tight in dry indoor or winter air. Oily and acne-prone skin should choose lighter, non-comedogenic formulas.

• Apply a thin, even layer so it does not transfer heavily onto bedding.
• Rinse in the morning and follow with sunscreen.

Heavier occlusive masks can feel too rich for congestion-prone skin, so start occasionally and adjust to how the skin responds.