Pore Firming Serum: Red Bean PDRN + Peptide

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 (27): Water, Butylene Glycol, Methyl Gluceth-20, 1,2-Hexanediol, Niacinamide, Glycerin, Polysorbate 20, Glycereth-26, Squalane, Carbomer, Tromethamine, Ethylhexylglycerin, Xanthan Gum, Adenosine, Disodium EDTA, Hydrogenated Lecithin, Coptis Japonica Root Extract, Centella Asiatica Extract, Ficus Carica (Fig) Fruit Extract, Dioscorea Japonica Root Extract, Sodium DNA, Phaseolus Angularis Seed Extract, Hydrolyzed Corn Starch, Ceramide NP, Beta-Glucan, Sucrose, Dipeptide Diaminobutyroyl Benzylamide Diacetate

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

27 of 27 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.

Butylene Glycol humectant

Butylene Glycol is a small glycol that does two jobs at once: it holds water in the top layer of skin and it dissolves plant extracts and actives that plain water cannot. It also thins a formula, which is why watery Korean essences lean on it.

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.

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.

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.

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.

Polysorbate 20 emulsifier

Polysorbate 20 is a solubiliser: it dissolves small amounts of oil or fragrance into a watery formula so nothing separates or floats.

Glycereth-26 humectant

Glycereth-26 is a modified glycerin that hydrates with far less stickiness than glycerin itself. It is a common way to load water into a formula that has to stay light.

Squalane emollient

Squalane is the stable, saturated version of squalene, a lipid human skin already makes. It is a light emollient that absorbs quickly, does not oxidise, and is one of the few oils widely considered safe for blemish-prone skin. Most cosmetic squalane is now from sugarcane or olive rather than shark.

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.

Tromethamine pH adjuster

Tromethamine neutralises acidic thickeners such as carbomer so they gel, and holds a formula near skin-friendly pH. It is used at a fraction of a percent.

Ethylhexylglycerin preservative booster

Ethylhexylglycerin softens skin and boosts a preservative system, which is why it is nearly always sitting beside phenoxyethanol or 1,2-hexanediol. It also cuts down the odour bacteria produce, so it turns up in deodorising products.

Market

Korean market, the version sold in Korea

EAN (barcode)

8809968133476

Made in

Republic of Korea

Volume

30 ml

Category

Serum & Ampoule

Actives

Adenosine, Beta-Glucan, Centella Asiatica, Ceramide NP, Niacinamide, PDRN (Sodium DNA), Squalane

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.