Real Barrier

Retiniol Pore Tightening Serum 30ml

Name: Real Barrier Retiniol Pore Tightening Serum 30ml
Brand: Real Barrier
SKU: 11333290973
Price: 47.5 USD
Availability: InStock

Real Barrier Retiniol Pore Tightening Serum 30ml carries ten separate hyaluronic acid forms on its own ingredient panel, including Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Hyaluronic Acid, Dimethylsilanol Hyaluronate.

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$47.50

30 ml

$158.33 per 100 ml

Korean-market formula
Ships from California or direct from Korea
Korean barcode and batch code intact

Suited to: dull, uneven-tone skindry, dehydrated skinskin looking to layer a targeted step under moisturizer

Helps with: dullness and an uneven-looking tonedehydration sitting under a moisturizer that cannot fix it alonea lack of bounce in tired-looking skin

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$47.50

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How it works

The panel on this serum names ten forms of hyaluronic acid rather than one: Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Hyaluronic Acid, Dimethylsilanol Hyaluronate, Hydrolyzed Sodium Hyaluronate, Potassium Hyaluronate, Hydroxypropyltrimonium Hyaluronate, Sodium Hyaluronate Crosspolymer, Sodium Hyaluronate Dimethylsilanol, Sodium Acetylated Hyaluronate. Sodium Hyaluronate is the salt of hyaluronic acid, and it is what most products labelled hyaluronic actually contain. The salt dissolves more readily and the molecule is smaller, so it sits in the outer layer of skin rather than only on top of it. On this panel it sits alongside Niacinamide, Collagen Extract and Tocopheryl Acetate. 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.

Key benefits

Ten forms of hyaluronic acid on one panel, not a single token inclusion
Niacinamide on the same panel, the formula's active
Collagen Extract on the same panel, the formula's protein
30 ml to a unit
Korean GS1 barcode matched against a Korea sourcing supplier's record for this item

How to use

Use Real Barrier Retiniol Pore Tightening Serum 30ml after toner and before cream, patting rather than rubbing it into skin.

1 of 8

Where does Real Barrier Retiniol Pore Tightening Serum 30ml go in my routine?

Apply it after cleansing and toning and before moisturizer, since a serum's concentrated formula works best on freshly prepped skin rather than layered over a heavy cream. A few drops are usually enough for the whole face; pat rather than rub it in. Follow with moisturizer to seal in what the serum just delivered.

Can I use Real Barrier Retiniol Pore Tightening Serum 30ml with other actives, like a retinoid or another exfoliating acid?

It generally layers fine with most other actives, but introduce anything new gradually rather than adding several new steps to a routine at once. If you are already using a strong exfoliating acid or a prescription retinoid or a strong acid exfoliant, alternate nights rather than stacking everything at once until you know how skin responds. When in doubt, patch test the combination on a small area first.

How many drops of Real Barrier Retiniol Pore Tightening Serum 30ml should I use?

Two to three drops or a single pump is enough for the whole face for most people; more product does not mean faster results, just more runoff. Pat it into skin in sections rather than dragging it across the face. Extra can go onto the neck and décolletage if there is enough left over.

Is Real Barrier Retiniol Pore Tightening Serum 30ml suitable for daily use?

Yes, this is formulated for regular AM and/or PM use as a standard routine step rather than an occasional treatment. New users can start once daily and build up to twice if skin tolerates it well. Consistency over weeks, not a single application, is what a serum like this is built to reward.

Is Real Barrier Retiniol Pore Tightening Serum 30ml the authentic Korean-market formula?

Yes, this is the same serum Real Barrier sells through Korean retail, sourced specifically for Korean Pharmacy's US catalog rather than reformulated for a US shelf. It carries its original Korean-market batch coding intact. That is the version this brand's reputation is actually built on.

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 (74): Water, Dipropylene Glycol, Glycerin, Betaine, Glycereth-26, Propanediol, 1,2-Hexanediol, Niacinamide, Methylpropanediol, Macadamia Ternifolia Seed Oil, Xylitylglucoside, Butyrospermum Parkii (shea) Butter, Xylitol, Sodium Hyaluronate, Chitosan, Carthamus Tinctorius (safflower) Seed Oil, Salvia Hispanica Seed Oil, Hydrolyzed Hyaluronic Acid, Hyaluronic Acid, Collagen Extract, Pentylene Glycol, Polyglycerin-3, Tocopheryl Acetate, Panthenol, Methyl Methacrylate Crosspolymer, Glyceryl Polymethacrylate, Hydrogenated Lecithin, C12-14 Alketh-12, Squalane, Hydrogenated Polydecene, Caprylic/Capric Triglyceride, Anhydroxylitol, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sodium Polyacryloyldimethyl Taurate, Polyglyceryl-3 Methylglucose Distearate, Butylene Glycol, Retinol, Allantoin, Bakuchiol, Sodium Stearoyl Glutamate, Tromethamine, Diethylhexyl Syringylidenemalonate, Sodium Polyacrylate, Brassica Campestris (rapeseed) Sterols, Ethylhexylglycerin, Dipotassium Glycyrrhizate, Adenosine, Cholesterol, Polyglyceryl-10 Laurate, Sodium Phytate, Phytosteryl/Behenyl/Octyldodecyl Lauroyl Glutamate, Aluminum/Magnesium Hydroxide Stearate, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Potassium Cetyl Phosphate, Tris(tetramethylhydroxypiperidinol) Citrate, Bis-Capryloyloxypalmitamido Isopropanol, Dihydroxyisopropyl Palmoylpalmamide, Myristoyl/Palmitoyl Oxostearamide/Arachamide MEA, Tocopherol, Ceramide Np, Phytosterols, Linoleic Acid, Linolenic Acid, Polyglyceryl-10 Oleate, Sucrose Palmitate, Dimethylsilanol Hyaluronate, Hydrolyzed Sodium Hyaluronate, Hydrolyzed Elastin, Potassium Hyaluronate, Hydroxypropyltrimonium Hyaluronate, Sodium Hyaluronate Crosspolymer, Sodium Hyaluronate Dimethylsilanol, Sodium Acetylated Hyaluronate, Xanthan Gum

Ingredient list read from myrealbarrier.co.kr on 30 August 2026.

67 of 74 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.
Dipropylene Glycol humectant: Dipropylene Glycol is a glycol used as a solvent and a light humectant. Its main job is keeping the rest of the formula dissolved and the texture fluid rather than adding hydration of its own.
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.
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.
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.
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.
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.
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.
Macadamia Ternifolia Seed Oil emollient: Macadamia Seed Oil is unusually high in palmitoleic acid, a fatty acid that human sebum also contains, which is why it absorbs faster than most nut oils. It is a cushioning emollient for dry skin.
Xylitylglucoside humectant: Xylitylglucoside is a sugar-derived humectant, the third member of the xylitol blend. Together the three hold water in the outer layer for longer than any of them does alone.
Butyrospermum Parkii (shea) Butter emollient: Shea Butter is the fat pressed from the shea nut, rich in oleic and stearic acids and unsaponifiable plant sterols. It is a heavy emollient and partial occlusive, which is why it sits in balms and night creams rather than in essences.

55 more explained

Xylitol humectant: Xylitol is a sugar alcohol humectant. It holds water in the outer layer of skin and is often paired with anhydroxylitol and xylitylglucoside as a hydration trio.
Sodium Hyaluronate humectant: Sodium Hyaluronate is the salt of hyaluronic acid, and it is what most products labelled hyaluronic actually contain. The salt dissolves more readily and the molecule is smaller, so it sits in the outer layer of skin rather than only on top of it.
Chitosan film former: Chitosan comes from the shells of crustaceans. It carries a positive charge, so it clings to skin and hair as a thin film, and it is a shellfish-derived ingredient.
Carthamus Tinctorius (safflower) Seed Oil emollient: Safflower seed oil, among the highest-linoleic plant oils. High-linoleic oils feel lighter and absorb faster than high-oleic ones.
Salvia Hispanica Seed Oil emollient: Chia seed oil, one of the richest plant sources of omega-3 fatty acids. It is a light, fast-absorbing oil that softens skin.
Hydrolyzed Hyaluronic Acid humectant: Hydrolyzed Hyaluronic Acid is hyaluronic acid cut into much shorter fragments. The smaller the fragment, the further into the outer layer it can settle, which is why serums stack several sizes together instead of using one.
Hyaluronic Acid humectant: Hyaluronic Acid is a sugar chain the body already makes, and one gram of it can hold several litres of water. In a formula it is a humectant that pulls water to the surface of skin and holds it in a film, which is what makes skin look plumper while it is there.
Collagen Extract protein: Collagen Extract is a collagen-bearing extract, usually from fish skin or scales. In a formula it works as a humectant and a smoothing film rather than as a source of new collagen.
Pentylene Glycol humectant: Pentylene Glycol hydrates and, like the other longer-chain glycols, makes a formula less hospitable to microbes so the preservative system can be lighter. It also improves how evenly a product spreads.
Polyglycerin-3 humectant: Polyglycerin-3 is a short chain of glycerin units used as a gentler, less sticky humectant. It also helps oils and water stay blended.
Tocopheryl Acetate antioxidant: Tocopheryl Acetate is a stable vitamin E ester that skin converts to tocopherol. It is used as an antioxidant and a light emollient and holds up better than plain vitamin E in a formula.
Panthenol humectant: Panthenol is pro-vitamin B5: skin converts it to pantothenic acid. It is a humectant that holds water and leaves skin feeling soft and less tight, and it is one of the ingredients formulators reach for when a formula also contains something harsh.
Methyl Methacrylate Crosspolymer absorbent: Methyl Methacrylate Crosspolymer is a polymer in fine sphere form. It absorbs oil, soft-focuses the look of texture and gives a powdery slip.
Glyceryl Polymethacrylate film former: Glyceryl Polymethacrylate is a polymer that forms a smooth, water-holding film and gives a formula a cushioned, non-sticky feel.
Hydrogenated Lecithin emulsifier: Hydrogenated Lecithin is lecithin with its unsaturated bonds filled in, which makes it far more stable. It emulsifies and is the standard shell for the liposomes that carry actives into the outer layer of skin.
C12-14 Alketh-12 emulsifier: C12-14 Alketh-12 is a solubiliser used to keep oils and fragrance dissolved in a water-based formula.
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.
Hydrogenated Polydecene emollient: Hydrogenated Polydecene is a synthetic hydrocarbon emollient used in place of mineral oil. It is stable, has no scent, and gives a cushioned slip without oxidising.
Caprylic/Capric Triglyceride emollient: Caprylic/Capric Triglyceride is the light fraction of coconut oil, with the heavy parts removed. It is the workhorse emollient of modern formulas: it softens skin, dissolves oil-soluble actives and absorbs without the greasy weight of a whole plant oil.
Anhydroxylitol humectant: Anhydroxylitol is a xylitol derivative used as a humectant. It is almost always part of the xylitol, anhydroxylitol and xylitylglucoside blend sold as a moisture-retention complex.
Acrylates/C10-30 Alkyl Acrylate Crosspolymer thickener: This is a carbomer relative with fatty side chains, so it thickens and stabilises an emulsion at the same time. It gives a light gel-cream body rather than a heavy one.
Sodium Polyacryloyldimethyl Taurate thickener: Sodium Polyacryloyldimethyl Taurate is a polymer thickener that holds a gel stable even with a lot of salt or acid in the formula.
Polyglyceryl-3 Methylglucose Distearate emulsifier: Polyglyceryl-3 Methylglucose Distearate is a sugar-derived emulsifier known for a light, non-soapy feel. It builds gel-creams that do not read as rich.
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.
Retinol active: Retinol is the alcohol form of vitamin A and the strongest retinoid available without a prescription. Skin converts it in two steps to retinoic acid, and it is used at night, at low percentages, for the look of fine lines and rough texture. It can leave skin flaking while it acclimatises.
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.
Bakuchiol active: Bakuchiol is a compound from the babchi seed, used as a plant-derived alternative to retinol. It is oil soluble, stable in daylight and does not carry retinol's acclimatisation period, which is why sensitive-skin formulas choose it.
Sodium Stearoyl Glutamate emulsifier: Sodium Stearoyl Glutamate is an amino-acid-derived emulsifier. It holds oil and water together and is mild enough for formulas built for reactive skin.
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.
Sodium Polyacrylate thickener: Sodium Polyacrylate is a polymer that absorbs many times its weight in water. It thickens a formula and holds water in a gel against the skin.
Brassica Campestris (rapeseed) Sterols emollient: Phytosterols are plant sterols, structurally close to the cholesterol in skin's own lipid layer. They soften skin and help the oil phase of a formula hold together.
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.
Dipotassium Glycyrrhizate active: Dipotassium Glycyrrhizate is a water-soluble salt derived from licorice root. It is the licorice fraction Korean formulas use for the look of redness, and it is far more stable in water than the whole extract.
Adenosine active: Adenosine is a nucleoside that Korea's own cosmetic authority recognises as a wrinkle-care functional ingredient, which is why it appears on so many Korean lists at a low level. It is used for the look of fine lines and is stable and well tolerated.
Cholesterol barrier lipid: Cholesterol is the third of the three lipids the outer layer of skin is built from, with ceramides and fatty acids. Formulas that carry all three are following the ratio skin itself holds.
Polyglyceryl-10 Laurate emulsifier: Polyglyceryl-10 Laurate is a sugar-derived emulsifier and solubiliser, mild enough to be a standard choice in Korean essences. It dissolves small amounts of oil into water without any tightening feel.
Sodium Phytate chelator: Sodium Phytate is a rice-derived chelator used in place of EDTA. It ties up trace metals so the formula stays stable and its colour and scent hold.
Phytosteryl/Behenyl/Octyldodecyl Lauroyl Glutamate barrier lipid: An amino-acid-based lipid built on plant sterols. It structures the oil phase of a cream and echoes the lipid mix that already sits between skin cells.
Aluminum/Magnesium Hydroxide Stearate dispersant: A mineral soap used to suspend powders and thicken an oil phase, which is what stops pigment settling to the bottom of a bottle.
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate antioxidant: This is a stabiliser that keeps the oils and fragrance in a formula from oxidising. Its job is the shelf life of the product rather than any effect on skin.
Potassium Cetyl Phosphate emulsifier: Potassium Cetyl Phosphate is an emulsifier prized for keeping powdered ingredients evenly suspended, which is why tinted and mineral-powder textures use it.
Tris(tetramethylhydroxypiperidinol) Citrate antioxidant: A hindered-amine antioxidant used to keep a formula from breaking down in light and air. It works on the product rather than on skin.
Tocopherol antioxidant: Tocopherol is vitamin E. It is an oil-soluble antioxidant that protects the oils in a formula from going rancid and works on skin as an emollient, and it is regularly paired with vitamin C because each keeps the other going for longer.
Ceramide Np barrier lipid: Ceramide NP is the most used cosmetic ceramide, the same class of lipid that makes up roughly half the mortar between cells in the outer layer of skin. Added to a cream it slots into that structure, which is why ceramide formulas feel less leaky rather than merely greasy.
Linoleic Acid fatty acid: Linoleic Acid is an essential omega-6 fatty acid and the main fatty acid in sunflower, safflower and rosehip oil. In a formula it is a lipid that softens and sits in the outer layer.
Linolenic Acid fatty acid: Linolenic Acid is an omega-3 fatty acid from seed oils. It is an emollient and part of the lipid mix skin uses in its own surface layer.
Polyglyceryl-10 Oleate emulsifier: Polyglyceryl-10 Oleate is a mild sugar-derived emulsifier and solubiliser used where a formula must stay clear.
Sucrose Palmitate emulsifier: A sugar ester: table sugar joined to a fatty acid. Sugar esters are mild emulsifiers with a light, silky feel and no detergent sting.
Dimethylsilanol Hyaluronate humectant: Dimethylsilanol Hyaluronate is hyaluronic acid joined to a silicon-based group. It hydrates and leaves a smoother, silkier finish than hyaluronic acid alone.
Hydrolyzed Elastin protein: Hydrolyzed Elastin is fragments of elastin, the protein that gives skin its snap back. Like collagen it cannot rebuild the real thing from the outside; it holds water and leaves a smooth film.
Potassium Hyaluronate humectant: Potassium Hyaluronate is another salt of hyaluronic acid, used for the same reason as the sodium form: it dissolves easily and holds a large amount of water in the outer layer of skin.
Hydroxypropyltrimonium Hyaluronate humectant: Hydroxypropyltrimonium Hyaluronate carries a positive charge, and skin carries a slight negative one, so it is attracted to the surface and stays through rinsing. It is the hyaluronic used where a formula gets washed off.
Sodium Hyaluronate Crosspolymer humectant: Sodium Hyaluronate Crosspolymer is hyaluronic acid linked into a mesh. It holds water in a soft gel on the surface rather than sinking in, and it releases that water slowly through the day.
Sodium Acetylated Hyaluronate humectant: Sodium Acetylated Hyaluronate is hyaluronic acid modified to be part oil-loving, so it clings to skin instead of rinsing away. Formulators call it the one that stays put.
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.

Inside the formula

Ingredients declared

No fragrance

on the list

Worth knowing

This step is not a substitute for a dedicated sunscreen, which should still be the last step of the morning routine.
Skin that is actively broken out or irritated does best starting this once daily before moving to twice.

Complete the routine

This itemReal Barrier Retiniol Pore Tightening Serum 30ml$47.50
The treatment step of this routineReal Barrier Aqua Soothing Ampoule 30ml$37.50
Seal the routine in as the last stepRealbarrier Extreme Cream$28.23

Total for 3 items$113.23

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