No.5+ Vitamin Spotlight Sheet Mask 10P

Not on the ingredient list below: fragrance or parfum, denatured or SD alcohol, essential oils, silicones, parabens, sulfate surfactants, mineral oil or petrolatum and added color.

Full INCI (32): 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

Ingredient list read from inkeedecoder.com on 10 September 2026.

32 of 32 explained

Water solvent

Water is the base almost every serum, toner and cream is built on. It dissolves the water-loving ingredients and sets how light the finished texture feels. On an INCI list it is usually first, which only means it is the largest single ingredient by weight.

Methylpropanediol humectant

Methylpropanediol is a small glycol used to hydrate and to help water-soluble actives penetrate the outer layer of skin more evenly. It leaves almost no tack, which suits watery textures.

Niacinamide active

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.

PEG/PPG-17/6 Copolymer solvent

PEG/PPG-17/6 Copolymer is a water-soluble polymer used as a humectant and solubiliser. It keeps a formula fluid and helps oils stay dispersed.

Coptis Japonica Root Extract plant extract

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.

1,2-Hexanediol humectant

1,2-Hexanediol is a glycol used for two reasons: it holds water like glycerin, and it makes a formula harder for microbes to live in, so less traditional preservative is needed. Korean formulas use it heavily for that second reason.

Hydroxyacetophenone preservative booster

Hydroxyacetophenone is an antioxidant that also strengthens a preservative system, so a formula needs less traditional preservative. Korean formulas pair it with 1,2-hexanediol constantly.

Hydroxyethyl Urea humectant

Hydroxyethyl Urea is a humectant that holds a lot of water for its size and stays comfortable at high levels. It is used where a formula needs to feel deeply hydrating without oil.

Isopentyldiol solvent

Isopentyldiol is a glycol used as a light solvent and humectant. It thins a formula, keeps extracts dissolved and leaves a dry finish.

Methyl Gluceth-20 humectant

Methyl Gluceth-20 is a sugar-derived humectant. It holds water in the outer layer of skin and gives a smooth, cushioned slip that plain glycerin does not.

Carbomer thickener

Carbomer is a synthetic polymer that only gels once a base neutralises it, which is why arginine or tromethamine sits nearby on the list. It gives the clear, non-stringy gel texture a xanthan formula cannot reach.

Allantoin active

Allantoin is a comfrey-derived compound used to condition skin and soften the outer layer so it feels smoother. It is one of the standard additions to a formula built for easily irritated skin.

Market

Korean market, the version sold in Korea

EAN (barcode)

8809652583488

Made in

Republic of Korea

Category

Mask

Actives

Adenosine, Allantoin, Arbutin, Bisabolol, Centella Asiatica, Glutathione, Hyaluronic Acid, Niacinamide, Urea, Vitamin C

Ships from

California or Korea

Orders ship from California or direct from Korea with tracked delivery to your door, and both routes carry the same Korean-market release. Shipping is free on orders of $100 or more. Returns are accepted for 30 days, by mail.

We split shipments free, so one out-of-stock item never holds up the rest of your order.

We stock the version of a formula that is sold in Korea, not the release a brand prepares for another market under the same name. The barcode in the specification above is the Korean-market one and it is printed on the box you receive.

Every unit keeps its original barcode and batch code intact, so the unit in your hands can be checked against the brand’s own records.

Every order ships from California or direct from Korea, and returns run for 30 days.

Every claim on this page traces to the unit in the box, the barcode, the batch code and the price you can read for yourself.