COSRX - Ultimate Nourishing Rice Overnight Mask (60ml) (Renew)

COSRX Ultimate Nourishing Rice Overnight Mask is a rich final layer worn while you sleep — a sleeping mask rather than a rinse-off treatment, which changes how you should think about where it fits.

Rice Overnight Mask at a glance

What a sleeping mask actually is

Despite the name, an overnight mask is not a mask in the sheet or clay sense. It is a rich, slightly occlusive moisturiser designed to be left on all night as the final step. The occlusive quality is the point: by slowing water loss through the night it gives everything underneath more time to work, and skin looks plumper and more rested by morning.

That morning effect is genuine and it is mostly hydration. Do not expect it to be transformative or cumulative in the way a nightly retinoid or acid is — a sleeping mask is a comfort and hydration product, not a treatment.

The niacinamide is the more interesting ingredient here, with reasonable evidence for tone, oil regulation and post-acne marks. It sits at a modest level in a product like this rather than a treatment concentration, so treat it as a pleasant addition rather than the reason to buy. Rice extract has a long tradition in Korean skincare and hydrates well; the brightening claims attached to it are considerably softer than the ones for niacinamide.

One practical note that catches people out: this replaces your night cream on the nights you use it. Layering it over another rich moisturiser is usually too much and is a common cause of congestion.

How to use it

1. Apply as the very last step of your evening routine, after serums.
2. Use a thin, even layer — more does not absorb better and can transfer onto bedding.
3. Skip your usual night cream on nights you use it.
4. Rinse in the morning and continue with your normal routine, including sunscreen.

Browse the full COSRX range at EmartGCC.

Frequently asked questions

Do I use this instead of or as well as my night moisturiser?

Instead of. It is a rich final layer in its own right, and stacking it over another cream tends to cause congestion.

Can I use it every night?

You can, though two or three nights a week suits most people. Very oily skin may find nightly use too occlusive.

Do I need to wash it off in the morning?

Yes, cleanse as normal in the morning. It is designed to work overnight, not to be worn under makeup.

Will it brighten my skin?

It contains niacinamide, which has decent evidence for tone and post-acne marks, but at a modest level here. Skin looks brighter mainly because it is well hydrated. For targeted pigmentation, use a dedicated serum.

Can I use it with retinol or acids?

Yes, applied over the top as the final layer. Doing so is a good way to reduce the dryness those cause.

Is it suitable for acne-prone skin?

It is fairly rich, so congestion-prone skin should use it sparingly and watch how it responds over two to three weeks. A lighter oil-free lotion may suit better.

Will it transfer onto my pillow?

A thin layer largely absorbs within about twenty minutes. Applying too much is the usual cause of transfer.

Buying COSRX in Kuwait

EmartGCC supplies 100% original COSRX with free standard home delivery across Kuwait, usually next day. Areas beyond Fahaheel and Jahra carry a 3 KD delivery surcharge. Cash on delivery is available, and unopened items can be returned within 14 days.