Arencia
Vitamin C Booster Shot Brightening Firming Care
Arencia Vitamin C Booster Shot Brightening Firming Care is a serum from Arencia's Korean-market lineup, sold here in the same formulation carried on shelf in Korea rather than a US-facing reformulation.
No reviews yet30 ml
$66.63 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- Normal skinDry skinDull-looking skinTargeted-active routines
- Helps with
- A concentrated treatment stepTargeted concerns before moisturizerLayering under a creamDaily AM or PM use
In stock. Arrives in 3 to 7 business days
We accept
You’re $100.00 away from free US shipping.
- 30-day returns
- Free US shipping on orders of $100 or more
- Tracked delivery to your door
How it works
As a serum, Vitamin C Booster Shot Brightening Firming Care is built to do one job well within a layered Korean routine rather than substitute for the steps around it. Arencia positions the line around a specific texture and finish that suits the format, whether that is a quick-absorbing fluid or a cushioned, richer feel. It is designed to be used at a consistent point in the routine so its effect builds with repeated use rather than a single application. Arencia sources this SKU as the authentic Korean-market formula, the same version sold on shelf in Korea, rather than a separate US-facing reformulation. That sourcing distinction, alongside fast and, is the reason to buy it here rather than through a general marketplace listing.
Key benefits
- Formulated as a serum for its specific place in a layered Korean routine
- Sourced as the authentic Korean-market formula, not a US reformulation
- Intact Korean-market barcode and batch code on every unit
- Part of Arencia's dedicated Korean-market lineup
Inside the formula
Inside the formula
Where does this fit in a routine?
As a serum, this is meant to be used at the point in a layered Korean routine where that step normally sits, applied by pressing a few drops into skin after toner and before moisturizer. Using it consistently at that point in the routine is what lets its effect build over repeated use. It is designed to work alongside the other steps around it rather than replace them.
Is this the same formula sold in Korea?
Yes. Arencia products sold through Korean Pharmacy are sourced as the authentic Korean-market formula, the same version stocked on shelf in Korea, rather than a separate US-facing reformulation many US retailers carry instead. Packaging carries the intact Korean-market barcode and batch code as part of that sourcing. This is the specific gap Arencia shoppers in the US have been left with since Korean import channels tightened.
How long will one unit last?
How long a serum lasts depends on how much is used per application and how often it is applied, so there is no single number that fits every routine. A smaller, daily-use amount will stretch the unit further than a heavier, occasional application. Checking the fill amount against your own usual per-use amount is the most reliable way to estimate it.
How is this different from the US version of the brand?
Many US retailers carry a reformulated version of Arencia built to different regulatory or cost targets than the version sold in Korea. Korean Pharmacy sources this specific SKU as the Korean-market formula instead, which is the version Arencia sells on shelf in Seoul. That is the whole reason a shopper looking for the authentic formula would buy it here rather than from a general US retailer.
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 (29): Water, Glycerin, Methylpropanediol, 3-O-Ethyl Ascorbic Acid (50,000 ppm), Butylene Glycol, Caprylic/Capric Triglyceride, 1,2-Hexanediol, Niacinamide, Cetyl Ethylhexanoate, Cetearyl Olivate, Polyglyceryl-3 Methylglucose Distearate, Diisostearyl Malate, Sodium Polyacrylate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sorbitan Olivate, Arginine, Gardenia Florida Fruit Extract, Xanthan Gum, Ethylhexylglycerin, Dextrin, Adenosine, Allantoin, Ascorbic Acid (10 ppm), Glutathione, Panthenol, Pyridoxine, Tocopherol, Ascorbyl Glucoside, Sodium Ascorbyl Phosphate
Ingredient list read from incidecoder.com on 12 September 2026.
29 of 29 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.
- 3-O-Ethyl Ascorbic Acid (50,000 ppm) antioxidant
- 3-O-Ethyl Ascorbic Acid is a stable vitamin C derivative that skin converts to ascorbic acid. It survives in a formula far better than pure vitamin C and works at a gentler pH, so it suits skin that finds the pure acid uncomfortable.
- 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.
- 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.
- 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.
- Cetyl Ethylhexanoate emollient
- Cetyl Ethylhexanoate is a synthetic ester used as a dry-feeling emollient. It spreads easily, leaves a silky rather than oily finish, and helps disperse pigments and UV filters evenly.
- Cetearyl Olivate emulsifier
- Cetearyl Olivate is the water-loving half of the olive-derived emulsifier pair. With sorbitan olivate it builds emulsions whose lipid profile is close to skin's own.
- 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.
- Diisostearyl Malate emollient
- Diisostearyl Malate is a thick, glossy ester used to hold pigment in suspension and give a cushioned shine. It is the standard emollient in lip products.
17 more explained
- 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.
- 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.
- Sorbitan Olivate emulsifier
- Sorbitan Olivate is an olive-derived emulsifier, the oil-loving half of the pair sold as Olivem. It holds oil into water and leaves a light, non-waxy feel.
- 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.
- Gardenia Florida Fruit Extract plant extract
- Gardenia Fruit Extract is the traditional East Asian yellow dye plant. In skincare it is used as an antioxidant extract, and it can tint a formula.
- 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.
- 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.
- Dextrin thickener
- Dextrin is a starch fragment used to thicken and to give a formula a light, powdery finish. It is also a common carrier for powdered extracts.
- 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.
- 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.
- Ascorbic Acid (10 ppm) antioxidant
- Ascorbic Acid is pure vitamin C, the most researched form and also the least stable: it needs a low pH and airtight packaging to stay active. It is an antioxidant used for the look of dullness and uneven tone.
- Glutathione antioxidant
- Glutathione is a small peptide the body uses as one of its main antioxidants. In skincare it is used as an antioxidant and for the look of dullness; it is unstable in water, so formulas that carry it are usually built around protecting it.
- 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.
- Pyridoxine vitamin
- Pyridoxine is vitamin B6. In a formula it is a conditioning vitamin, most often in B-complex blends and scalp products.
- 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.
- Ascorbyl Glucoside antioxidant
- Ascorbyl Glucoside is vitamin C bound to glucose, which keeps it stable until enzymes in skin release it. It is a mild, slow-release route to a vitamin C formula.
- Sodium Ascorbyl Phosphate antioxidant
- Sodium Ascorbyl Phosphate is a water-soluble, stable vitamin C salt. It works at near-neutral pH, so it appears in formulas aimed at skin that pure ascorbic acid leaves stinging.
- Market
- Korean market, the version sold in Korea
- Made in
- Republic of Korea
- Volume
- 30 ml
- Category
- Serum & Ampoule
- Actives
- Adenosine, Allantoin, Glutathione, Niacinamide, Panthenol, 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.
Where this unit came from
- 1Seoul
Bought as Korean-market stock - 2Barcode
Listed against the Korean barcode on its box - 3California or Korea
Ships to you from either, as the same Korean-market release
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.
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.
How to use
- Use the Vitamin C Booster Shot Brightening Firming Care after toner and before moisturizer, morning and evening.
- Apply an appropriate amount on clean face and gently pat to aid absorption.
- Toner first so the surface is damp, then this, then about a minute before your moisturizer goes over the top.
- Twice a day, every day. Do not stack it with a second serum of the same kind; two hydrating serums in one routine do the work of one.
Worth knowing
- Patch test on a small area before full-face use if you have known sensitivities.
- Discontinue use if irritation, redness, or discomfort develops.
Complete the routine
- This itemArencia Vitamin C Booster Shot Brightening Firming Care$19.99

- Cleanse first, so the next step meets bare skinArencia Fresh Royal Rosehip Cleanser 120g$32.50

- The treatment step of this routineArencia Holy Hyssop Serum 30 50g$57.50

Total for 3 items$109.99
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Arencia Vitamin C Booster Shot Brightening Firming Care
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Arencia, Korean-market original
Arencia Vitamin C Booster Shot Brightening Firming Care, the authentic Korean-market serum sourced for the Korean market.
Verify your unit when it arrives
Verify your unit when it arrives
Korean-market stock with the original barcode and batch code intact, exactly as it left Korea.
On the unit itself
- The Korean-market barcode, unaltered from the retail package.
- The manufacturer’s batch code, exactly as the maker printed it.
정품Genuine article, Korean-market stock
What professionals say
What professionals say
What skin-care professionals say about skin care, quoted from the medical sources linked beside each.
Your skin barrier is basically your outer layer of the skin.
Melissa Piliang, MDDermatologist, Cleveland Clinic Pretty much every step of a Korean skin care routine is going to have some component of hydration.
Alok Vij, MDDermatologist, Cleveland Clinic
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