# Numbuzin No.5+ Vitamin Spotlight Sheet Mask 10P

The Korean-market sheet mask built around Niacinamide, from Numbuzin, sourced for the Korean market and reviewed before it ever reaches this page.

- Brand: Numbuzin
- Product: No.5+ Vitamin Spotlight Sheet Mask 10P
- Price: $45.00
- Availability: In stock
- Market: Korean market, the version sold in Korea
- Made in: Republic of Korea
- EAN (barcode): 8809652583488
- Category: Masks

## Key benefits

- Niacinamide named on this product's own ingredient panel, near the top of it
- Coptis Japonica Root Extract on the same panel, the formula's plant extract
- Allantoin on the same panel, the formula's active
- Korean GS1 barcode matched against a Korea sourcing supplier's record for this item

## How it works

Niacinamide leads the ingredient panel on this sheet mask. Niacinamide is vitamin B3, and it is the most studied active in Korean formulation. It is used at roughly 2 to 5 percent for the look of uneven tone and visible pores, and it is water soluble, stable and comfortable beside almost every other active, which is why it turns up in so many lists. On this panel it sits alongside Coptis Japonica Root Extract, Allantoin and Sodium Ascorbyl Phosphate. Coptis Japonica is a traditional East Asian medicinal root, bright yellow from its berberine content. In skincare its extract is used for the look of congested, oily skin.

## How to use

1. Use it as the weekly treatment, two to three times a week, for 15 to 20 minutes, giving it a moment to settle before the next step.

## Ingredients

Water, Methylpropanediol, Niacinamide, PEG/PPG-17/6 Copolymer, Coptis Japonica Root Extract, 1,2-Hexanediol, Hydroxyacetophenone, Hydroxyethyl Urea, Isopentyldiol, Methyl Gluceth-20, Carbomer, Allantoin, Sodium Ascorbyl Phosphate, Glutathione, Hydrogenated Lecithin, PEG-60 Hydrogenated Castor Oil, Xanthan Gum, Adenosine, Ethylhexylglycerin, Sodium Polyacrylate, Butylene Glycol, Centella Asiatica Extract, Disodium EDTA, Hydroxyethylcellulose, Methyl Diisopropyl Propionamide, Polyglutamic Acid, Protease, Ceramide, Ascorbic Acid, Arbutin, Alpha-Bisabolol, Hyaluronic Acid

## FAQ

### Can I use this alongside other actives in my routine?

Yes. Niacinamide is the lead active here, and it is formulated to sit alongside the rest of a routine rather than replace it. Introduce any new step on its own for the first week or two before adding it next to another strong active, so it is easy to tell which product is responsible for any change. Once it is settled into the routine, it layers the way any other sheet mask in a Korean routine does.

### How do I know this is authentic and not a US-reformulated version?

Check the box against the listing: an authentic Korean-market SKU carries Korean-primary packaging and an intact Korean-market batch code, not a US-only relabel. Numbuzin's Korean-market formulas are sourced specifically to preserve that, rather than substituted for the US-shelf version some retailers carry under the same name.

### When in a routine should I use this sheet mask?

Use it as the weekly treatment, two to three times a week, for 15 to 20 minutes. Placing a sheet mask out of order is the most common reason a Korean routine feels like it is not working, so keep this one at its own step rather than doubling it up with a product built for a different stage. Give it a few weeks at that placement before judging the result.

### What does Niacinamide do in this formula?

Niacinamide supports an even-looking skin tone and works alongside the formula's humectants to keep the surface comfortable. It is one of the most studied actives in Korean formulation for tone evenness and is gentle enough for daily AM and PM use. It sits at its own position on this product's own ingredient list rather than being assumed from the product name.

### What does Urea do in this formula?

Urea is a humectant naturally present in skin that also helps soften rougher surface texture. It is a common inclusion in Korean formulas aimed at rougher, drier patches of skin, valued for both its humectant and softening role. It sits at its own position on this product's own ingredient list rather than being assumed from the product name.

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Page: https://korean-pharmacy.com/products/numbuzin-no-5-vitamin-spotlight-sheet-mask-10p