
The Numbuzin No.6 Deep Sleep Mask Serum is a Korean skincare product that promises to provide instant and long-lasting hydration to the skin. It contains Iceland Glacier Water and a 5-layer Hyaluronic Acid Complex, which helps balance moisture levels for up to 48 hours. The serum has a lightweight, watery texture that absorbs quickly, leaving the skin refreshed without any stickiness. To use the product, pump 2-3 times and apply it to the entire face. For optimal results, it is recommended to apply a small amount for the first layer and then add another layer on top. It can be used during the day or as an overnight mask to restore radiance to dull skin.
| Characteristics | Values |
|---|---|
| Texture | Serum-like |
| Use | Overnight mask |
| Application | Pump 2-3 times and apply to the face |
| Layering | For optimal results, apply a small amount for the first layer and add another layer afterwards |
| Skin Type | Suitable for all skin types, especially dry, dull, and dehydrated skin |
| Ingredients | Iceland Glacier Water, 5-layer Hyaluronic Acid Complex, Niacinamide, Adenosine |
| Results | Instant and long-lasting hydration, improved skin tone and texture, reduced blemishes and wrinkles |
| Scent | None |
| Finish | Non-sticky |
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What You'll Learn

Dispense 2-3 pumps of the product
Dispensing 2-3 pumps of the Numbuzin Deep Sleep Mask serum is the first step in your skincare routine. The serum has a watery texture, so be careful not to spill it. You can dispense the product either into your hands or directly onto your face. If dispensing into your hands, make sure your hands are clean and dry.
The serum is designed to be used as an overnight mask, so you will be applying it before you go to sleep. The serum is suitable for all skin types, especially dry, dull, and dehydrated skin. It is formulated with 63% Iceland Glacier Water and a 5-layer Hyaluronic Acid Complex, which provides intense, long-lasting hydration and balances moisture levels for up to 48 hours. It also contains Niacinamide, which brightens the complexion and reduces dark spots and pigmentation.
After dispensing the product, gently spread it across your skin, patting it with your fingertips to aid absorption. You can then follow with the rest of your skincare routine, such as a sheet mask, eye cream, or moisturiser.
For optimal results, you can apply the serum in layers. Apply a small amount for the first layer and then add another layer on top. This will ensure that you wake up to radiant, glowing skin.
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Apply to the entire face
The Numbuzin No.6 Deep Sleep Mask Serum is a Korean skincare product designed to restore radiance and hydration to dry, flaky, and dull skin. It is formulated with 63% Iceland Glacier Water and a 5-layer Hyaluronic Acid Complex to provide long-lasting hydration and balance moisture levels for up to 48 hours. The serum also contains Niacinamide, which helps brighten the complexion, reduce dark spots, and improve skin tone.
To apply the Numbuzin Deep Sleep Mask Serum to the entire face, follow these steps:
- Dispense the product: Start by pumping the bottle two to three times to dispense the serum into your hand. Ensure that the dropper does not touch your skin to avoid any contamination.
- Apply to the face: Gently spread the serum across your entire face, using your fingertips to gently pat it into the skin. This step will aid in the absorption of the product.
- Add another layer: For optimal results, it is recommended to apply a small amount as the first layer and then add another layer on top. This allows for a more intensive treatment, ensuring that your skin receives the full benefits of the serum.
- Optional steps: You can follow up with additional skincare steps such as a sheet mask, eye cream, or moisturiser, depending on your personal preferences and skin's needs. Alternatively, you can use the serum as a treatment by moistening a thin cotton pad with it and applying it to your face.
The Numbuzin Deep Sleep Mask Serum is designed to be used as an overnight mask, so it is typically applied before sleep. The serum has a lightweight, watery texture that absorbs quickly, leaving your skin feeling refreshed and hydrated without any stickiness. It is suitable for all skin types, especially dry, dull, and dehydrated skin.
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For optimal results, add another layer
To use the Numbuzin No.6 Deep Sleep Mask Serum for optimal results, you should apply it in layers. First, pump the product two to three times and apply a thin layer to your entire face. Then, add another layer on top. You can also use this serum as a treatment by moistening a thin cotton pad with the serum and applying it to your face.
The serum has a highly concentrated watery texture that forms a moisture barrier on the skin, so it is important to allow each layer to absorb fully before applying the next. This will ensure that your skin can fully absorb the product and that you are not just adding unnecessary product that will not be beneficial.
The Numbuzin No.6 Deep Sleep Mask Serum is designed to be used as an overnight mask to restore radiance and hydration to lacklustre skin. It contains a high concentration of mineral-rich Icelandic Glacier Water and five types of Hyaluronic Acid to provide intense, long-lasting hydration. The formula also includes Niacinamide, which brightens the complexion, reduces dark spots and pigmentation, and supports the skin barrier.
For this reason, it is beneficial to add another layer of the serum to ensure that your skin is able to absorb as much of these beneficial ingredients as possible. This will also help to create a thicker barrier on the skin, which can enhance the locking-in of moisture and ensure that you wake up to radiant, glowing skin.
Additionally, you may want to consider using another product on top of the Numbuzin No.6 Deep Sleep Mask Serum to help "seal in" the moisture. Look for ingredients like dimethicone, squalane, oils, and butters, which are particularly effective at locking in moisture.
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Can be used during the day
The Numbuzin No.6 Deep Sleep Mask Serum can be used during the day. The serum provides the benefits of a sheet mask with the convenience of a daily serum, making it perfect for days when your skin needs a quick hydration boost.
The serum has a lightweight, watery texture that absorbs quickly, leaving skin glowing and refreshed without any stickiness. It is suitable for all skin types, especially dry, dull, and dehydrated skin.
To use the serum during the day, follow these steps:
- Dispense a few drops of the product into your hands, ensuring that the dropper does not touch your skin.
- Gently spread the serum across your skin, patting with your fingertips to aid absorption.
- You can follow this with a moisturiser or another product to help "seal in" the moisture. Look for ingredients like dimethicone, squalane, oils, or butters.
- Alternatively, you can use the serum as a treatment: moisten a thin cotton pad with the serum and apply it to your face.
Using the serum during the day can help to provide instant and long-lasting hydration, thanks to its formula containing Icelandic Glacier Water and Hyaluronic Acid. It can also help to reduce breakouts and clogged pores due to the presence of Niacinamide, which is effective in treating acne.
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Can be used with a sheet mask
The Numbuzin No.6 Deep Sleep Mask Serum can be used with a sheet mask. This serum is designed to provide the benefits of a sheet mask with the convenience of a daily serum. It is perfect for when your skin needs a quick hydration boost.
To use the serum with a sheet mask, start by dispensing a few drops of the product into your hands, ensuring that the dropper does not touch your skin. Gently spread the serum across your skin, patting with your fingertips to aid absorption.
Then, follow with the sheet mask of your choice. Sheet masks are thin, pre-cut masks that are soaked in serum and natural ingredients. They are typically made from paper, fibres, or thin gels and are designed to fit neatly on your face, covering all areas evenly.
After opening the sheet mask packaging, locate the eye and mouth cut-outs for proper positioning. Fit these cut-outs to your face and smooth out the mask onto your skin. Leave the sheet mask on for around 15 minutes before removing it and disposing of it.
Sheet masks are a great way to complement your skincare routine and provide your skin with a break after a long day. They help to open up your pores and deeply hydrate your skin. By combining the Numbuzin serum with a sheet mask, you can enhance the hydrating and nourishing effects on your skin.
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Frequently asked questions
Dispense a few drops of the product into your hands, ensuring the dropper doesn't touch your skin. Gently spread the product across your face, patting with your fingertips to aid absorption.
Pump the bottle 2-3 times to dispense the product. For optimal results, apply a small amount for the first layer and then add another layer on top.
Apply the product to your face before going to sleep.
Yes, you can use this product with your usual skincare routine. Apply the serum after essence and before your sheet mask, eye cream, or moisturiser.











































