• Numbuzin No.6 Deep Sleep Mask Serum 50ml – overnight repairing serum for radiant, hydrated skin
  • Numbuzin No.6 Deep Sleep Mask Serum 50ml being applied onto the hand with a glass dropper, showing the lightweight hydrating serum texture in soft natural light.
  • Numbuzin No.6 Deep Sleep Mask Serum 50ml displayed on warm travertine with soft morning sunlight in a premium Korean skincare hero photo.
  • Numbuzin No.6 Deep Sleep Mask Serum 50ml styled with beige linen, ceramic cup, glass vessel, and warm travertine in a calm Gaia-style skincare vanity scene.
  • Numbuzin No.6 Deep Sleep Mask Serum 50ml shown open with a glass dropper dispensing clear hydrating serum above the bottle on warm travertine.
  • Dropper of Numbuzin No.6 Deep Sleep Mask Serum releasing lightweight essence for deep hydration
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numbuzin

numbuzin No. 6 Deep Sleep Mask Serum 50ml

numbuzin No. 6 Deep Sleep Mask Serum 50ml

$23.00 USD
$28.00 USD $23.00 USD
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Overnight serum mask to hydrate, smooth, and restore skin

Skin feels: Hydrated · Plump · Soft · Refreshed

Ideal for:

  • Dry or dehydrated
  • Dull or tired-looking
  • Rough or lacking softness
  • In need of overnight hydration

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An intensive overnight hydrating serum that helps replenish moisture while you sleep, leaving skin looking smoother, plumper, and refreshed by morning.

  • Provides long-lasting hydration throughout the night.
  • Helps improve the appearance of plump, healthy-looking skin.
  • Leaves skin feeling soft, refreshed, and comfortably moisturized.

Formulated with Glacier Water, niacinamide, multiple forms of hyaluronic acid, panthenol, sodium PCA, Chlorella Vulgaris Extract, and antioxidant-rich botanical extracts, this lightweight serum helps maintain the skin's moisture barrier while delivering lasting hydration. Its cushiony texture absorbs comfortably without feeling heavy, making it ideal as the final treatment step in your evening routine.

Why Gaia chose this: This serum focuses on overnight hydration using multiple moisture-binding ingredients, making it an excellent choice for skin that feels dehydrated, dull, or lacking bounce.

Numbuzin No.6 Deep Sleep Mask Serum is a Korean overnight hydrating serum formulated with Glacier Water, niacinamide, multiple forms of hyaluronic acid, and panthenol to help replenish moisture while supporting smoother, plumper-looking skin.

Ingredients

Key ingredients:

  • Glacier Water (≈63%): Helps replenish lightweight hydration.
  • Multi-Hyaluronic Acid Complex: Helps attract and retain moisture for plumper-looking skin.
  • Niacinamide: Helps improve the appearance of uneven-looking skin tone.
  • Panthenol & Sodium PCA: Help support the skin's moisture barrier while maintaining skin comfort.

Full ingredients:

Glacier Water (≈63%), Butylene Glycol, Propanediol, Glycerin, Niacinamide, 1,2-Hexanediol, Purified Water, Chlorella Vulgaris Extract, Xylitylglucoside, Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Panthenol, Curcuma Longa (Turmeric) Root Extract, Solanum Melongena (Eggplant) Fruit Extract, Aloe Barbadensis Flower Extract, Ocimum Sanctum (Holy Basil) Leaf Extract, Melia Azadirachta Leaf Extract, Melia Azadirachta Flower Extract, Coccinia Indica Fruit Extract, Corallina Officinalis Extract, Hyaluronic Acid, Sodium PCA, Anhydroxylitol, Fructooligosaccharides, Xanthan Gum, Adenosine, Tocopherol

Ingredient lists may change. Please refer to the product packaging for the most accurate and up-to-date information.

How to Use

  1. Cleanse your skin and apply toner.
  2. Apply your usual treatment serum if desired.
  3. Dispense 2–3 pumps of the serum.
  4. Spread evenly over the face and neck.
  5. Use as the final serum before moisturizer or in place of a serum during your evening routine.

Ritual Step: Step 3 — Treat

When to Use: Evening. Suitable for daily overnight hydration.

Pairs well with:

  • Ceramides: Help support the skin's moisture barrier.
  • Hyaluronic Acid: Helps replenish and retain moisture.
  • Panthenol: Helps maintain skin comfort.
  • Niacinamide: Helps support a brighter, more balanced-looking complexion.

Use with care alongside: Compatible with most skincare routines, including retinoids and exfoliating acids, to help maintain hydration overnight.

Frequently Asked Questions

Can I use this every night?
Yes. It is formulated for daily evening use as part of your overnight skincare routine.

Is this a moisturizer?
No. It is a hydrating serum. Follow with a moisturizer if your skin needs additional moisture.

Can I use it with retinol?
Yes. This serum pairs well with retinol by helping replenish hydration and maintain skin comfort.

Is it suitable for dehydrated skin?
Yes. It contains multiple hydrating ingredients that help replenish moisture and support a healthy-looking moisture barrier.

Shipping & Delivery

At Gaia K-Beauty, every product is thoughtfully curated for authenticity, freshness, and gentle, effective care.

📦 Ships from California
Most items ship from our California base
Processing: 1–2 business days
Delivery: ~3–7 business days within the U.S.

🌍 International Orders
Import taxes, customs duties, or related fees may apply upon arrival and are the responsibility of the buyer.

⚠️ Shipping Note
Please ensure your shipping address is complete and accurate. Orders returned due to invalid or undeliverable addresses may require a reshipping fee.

✨ Always authentic. Carefully sourced. Shipped with care.

Questions anytime: support@gaiakbeauty.com

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