Collagen Essential Mask Sheet Core Firming 10P

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

Full INCI (46): Water, Glycerin, Methylpropanediol, Propanediol, 1,2-Hexanediol, Hydrolyzed Extensin (Vegan Collagen 2,000Ppm), Hydroxyacetophenone, Carbomer, Arginine, Xanthan Gum, Betaine, Trehalose, Adenosine, Polyglyceryl-10 Laurate, Sea Water, Dipropylene Glycol, Polyglyceryl-4 Laurate, Disodium EDTA, Octyldodeceth-16, Sodium Hyaluronate, Panthenol, Aminobutyric Acid, Butylene Glycol, Prunus Amygdalus Dulcis (Sweet Almond) Oil, Glyceryl Glucoside, Sodium Polyacrylate, Pelargonium Graveolens Flower Oil, Lavandula Angustifolia (Lavender) Oil, Hydrogenated Lecithin, Tremella Fuciformis Polysaccharide, Anthemis Nobilis Flower Oil, Citrus Aurantium Dulcis (Orange) Peel Oil, Perilla Frutescens Leaf Extract, Taraxacum Officinale (Dandelion) Rhizome/​Root Extract, Juniperus Mexicana Oil, Elastin, Cyperus Rotundus Root Extract, Caprylic/​Capric Triglyceride, Acetyl Hexapeptide-8, Copper Tripeptide-1, Hexapeptide-9, Nonapeptide-1, Palmitoyl Pentapeptide-4, Palmitoyl Tetrapeptide-7, Tripeptide-1, Ceramide NP

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

44 of 46 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.

Glycerin humectant

Glycerin is the most used humectant in skincare. It draws water into the outer layer of skin and holds it there, and it is one of the very few ingredients whose hydrating effect is settled science rather than marketing. Higher amounts feel tacky, which is why it is usually blended.

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.

Propanediol humectant

Propanediol is a plant-derived glycol used in place of propylene glycol. It hydrates, carries actives into solution, and gives a lighter, less sticky slip than glycerin at the same strength.

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.

Hydrolyzed Extensin (Vegan Collagen 2,000Ppm) protein

Extensin is a structural glycoprotein from plant cell walls. Hydrolysed, it is cut into fragments small enough to dissolve, and it works as a water-holding film on the surface.

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.

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.

Arginine amino acid

Arginine is an amino acid that does two jobs here: it holds water in the outer layer of skin, and it neutralises acidic gelling agents, which is why it often stands in for a synthetic pH adjuster.

Xanthan Gum thickener

Xanthan Gum is a polysaccharide made by fermenting sugar. It thickens a watery formula into a gel and holds the whole thing in suspension so nothing separates. Too much of it and a serum turns stringy, which is why it appears in fractions of a percent.

Betaine humectant

Betaine is a sugar-beet-derived humectant that cells use to hold water. In a formula it hydrates and takes the edge off cleansers and acids, which is why it often appears alongside them.

Trehalose humectant

Trehalose is a sugar that some desert plants use to survive drying out. In skincare it is a humectant that holds water in the outer layer and helps a formula feel comfortable rather than tight.

Market

Korean market, the version sold in Korea

EAN (barcode)

8809936744079

Made in

Republic of Korea

Category

Mask

Actives

Adenosine, Ceramide NP, Collagen, Panthenol, Peptides, Sodium Hyaluronate, Trehalose

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.