---
product_id: 357094487
title: "No.6 Serum | Deep Sleep Mask Serum | Iceland Glacier Water for Instant and Long-lasting Hydration with Hyaluronic Acid & Niacinamide | Korean Skincare for Dry Skin | 50 ml"
brand: "numbuzin"
price: "4726 kr"
currency: ISK
in_stock: true
reviews_count: 13
category: "Numbuzin"
url: https://www.desertcart.is/products/357094487-no-6-serum-deep-sleep-mask-serum-iceland-glacier-water
store_origin: IS
region: Iceland
---

# Overnight serum-mask for long-lasting hydration 5 layers of Hyaluronic Acid for deep moisture 63% Iceland Glacier Water for pure hydration No.6 Serum | Deep Sleep Mask Serum | Iceland Glacier Water for Instant and Long-lasting Hydration with Hyaluronic Acid & Niacinamide | Korean Skincare for Dry Skin | 50 ml

**Brand:** numbuzin
**Price:** 4726 kr
**Availability:** ✅ In Stock

## Summary

> ❄️💧 Sleep Deep, Glow Deeper — Your Overnight Hydration Hero

## Quick Answers

- **What is this?** No.6 Serum | Deep Sleep Mask Serum | Iceland Glacier Water for Instant and Long-lasting Hydration with Hyaluronic Acid & Niacinamide | Korean Skincare for Dry Skin | 50 ml by numbuzin
- **How much does it cost?** 4726 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/357094487-no-6-serum-deep-sleep-mask-serum-iceland-glacier-water)

## Best For

- numbuzin enthusiasts

## Why This Product

- Trusted numbuzin brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **K-Beauty Meets Science:** A lightweight, fast-absorbing gel serum that complements your skincare tech and routine seamlessly.
- • **Overnight Renewal Ritual:** Works as a serum and mask combo to nourish your skin while you sleep—wake up glowing.
- • **Glacier-Powered Hydration:** Harness the purity of Iceland’s glacier water to quench your skin’s deepest thirst.
- • **Multi-Layer Moisture Boost:** Five layers of hyaluronic acid lock in hydration for a plump, radiant complexion all day and night.
- • **Perfect for Dry & Dull Skin:** Specifically formulated to revive dehydrated, loose, and dull skin with lasting softness.

## Overview

numbuzin No.6 Serum is a 50ml Korean skincare innovation featuring 63% Iceland Glacier Water and 5 layers of hyaluronic acid. Designed for dry and dull skin, this serum-mask hybrid delivers instant and long-lasting hydration, balancing moisture and oil while you sleep. Lightweight and unscented, it absorbs quickly and pairs perfectly with facial devices, making it a must-have for millennial professionals seeking radiant, healthy skin.

## Description

Deeply hydrate and nourish skin overnight with this serum-like mask featuring 63% Iceland glacier water and 5 layers of hyaluronic acid for long-lasting moisture.

Review: Glowing - Not just a regular serum! It keeps my skin hydrated and moisturised overnight, and complements my regular skin care routine. Now I use this serum day and night, especially during winter time for my super dry and sensitive skin. You can tell it has good quality ingredients. I’m glowing!!! Great deal purchasing from desertcart.
Review: Perfect for Micro current device massage - I’ve been using this serum together with my Foreo Bear, and I absolutely love it! The texture is lightweight but deeply hydrating. What’s great is that it absorbs quickly without feeling sticky. I liked it so much that I added it to my regular desertcart subscription Highly recommend if you want a soothing, hydrating serum that works well with facial devices.

## Features

- [Skin types & Skin concerns]: For all kinds of skins but especially for dry skin type. Targets for dull skin, dehydrated skin, and loose skin
- [Key Ingredients]: 63% of Iceland Glacier Water and 5 layers of Hyaluronic acid allows deep hydration and give your skin the perfect water and oil balance
- [How to use]: Apply it for your day and night routine.
- [Recommended Skin Care routine]: Toner (No.1 Pure-full Calming Herb Toner) -Serum (No.6 Deep Sleep Mask Serum) -Cream (No.2 Cica Ceramide Repair Cream).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0915M2CXG |
| ASIN  | B0915M2CXG |
| Best Sellers Rank | 35,218 in Beauty ( See Top 100 in Beauty ) 564 in Face Treatments & Masks |
| Brand | numbuzin |
| Colour | Blue |
| Country of origin  | Korea, Republic of |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,242) |
| Customer reviews | 4.4 4.4 out of 5 stars (2,242) |
| Date First Available | 19 April 2021 |
| Department | Unisex |
| Department  | Unisex |
| Format | Gel |
| Item dimensions L x W x H | 12.1 x 5.5 x 5.1 centimetres |
| Item model number | 8809652580210 |
| Item model number  | 8809652580210 |
| Item weight | 50 Grams |
| Manufacturer | BENOW Inc. |
| Manufacturer  | BENOW Inc. |
| Package Weight | 0.21 Kilograms |
| Package dimensions | 12 x 5.2 x 5 centimetres |
| Product Dimensions | 12.07 x 5.46 x 5.08 cm; 50 g |
| Product Dimensions  | 12.07 x 5.46 x 5.08 cm; 50 g |
| Scent | Unscented |
| Skin type | Dry |
| Special features | Not Tested On Animals |
| Speciality | Long Lasting |
| Volume | 50 Millilitres |

## Product Details

- **Active ingredients:** hyaluronic acid,niacinamide
- **Brand:** numbuzin
- **Item form:** Gel
- **Item weight:** 50 Grams
- **Material feature:** Lightweight and easily absorbed
- **Product benefits:** Hydrating
- **Scent:** Unscented
- **Skin type:** Dry
- **Special ingredients:** ceramides, hyaluronic_acid
- **Use for:** Face

## Images

![No.6 Serum | Deep Sleep Mask Serum | Iceland Glacier Water for Instant and Long-lasting Hydration with Hyaluronic Acid & Niacinamide | Korean Skincare for Dry Skin | 50 ml - Image 1](https://m.media-amazon.com/images/I/51k3P8VfYDL.jpg)

## Questions & Answers

**Q: Can I layer serum 6 with either a vitamin c or retinol?**
A: Probably not with retinol since there's niacinamide

**Q: Is this supposed to be a very watery and runny? I'm used to a serum typically being a bit thicker I just want to check if what I got was right?**
A: Yes it is watery. I like it because it’s natural made out of glacier water and hydrating.

**Q: How many times a week should I use this product?**
A: You can use it as many times as you want! 
You can put 1 layer both day and night but at night if you want extra hydration, try 2-3 layers! :)

**Q: Would I use this before no 3 or after?**
A: Not sure if you are referring to the number 3 toner or serum. If the toner then I would say serum 6 after the toner.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Glowing
*by C***A on 24 January 2026*

Not just a regular serum! It keeps my skin hydrated and moisturised overnight, and complements my regular skin care routine. Now I use this serum day and night, especially during winter time for my super dry and sensitive skin. You can tell it has good quality ingredients. I’m glowing!!! Great deal purchasing from Amazon.

### ⭐⭐⭐⭐⭐ Perfect for Micro current device massage
*by A***X on 30 June 2025*

I’ve been using this serum together with my Foreo Bear, and I absolutely love it! The texture is lightweight but deeply hydrating. What’s great is that it absorbs quickly without feeling sticky. I liked it so much that I added it to my regular Amazon subscription Highly recommend if you want a soothing, hydrating serum that works well with facial devices.

### ⭐⭐⭐⭐ Good hydration
*by A***H on 26 June 2024*

Good hydration, but leaves a bit of a film that needs to be massaged in, assume that’s the intention for this having a sheet mask feel. The other serums tend to do the same thing though.

## Frequently Bought Together

- numbuzin No.6 Serum | Deep Sleep Mask Serum | Iceland Glacier Water for Instant and Long-lasting Hydration with Hyaluronic Acid & Niacinamide | Korean Skincare for Dry Skin | 1.69 fl. oz.
- numbuzin No.3 Serum | Skin Softening Serum | Pores, Textured, Bumpy, Rough to Glass Skin | Bifida, Galactomyces, Niacinamide, Adenosine, Panthenol | 1.69 fl. oz.
- numbuzin No.3 Toner | Super Glowing Essence Toner | Skin Radiance, Pore Tightening, Skin Texture, Hydration | Fermented Ingredients, Niacinamide, Galactomyces | 6.76 fl. oz.

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**Shop now:** [https://www.desertcart.is/products/357094487-no-6-serum-deep-sleep-mask-serum-iceland-glacier-water](https://www.desertcart.is/products/357094487-no-6-serum-deep-sleep-mask-serum-iceland-glacier-water)

---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-13*