What is Post Alpha First Cure Serum?

It is Cell Fusion C's ampoule serum (50ml). Its own ingredient list names Beta-Glucan, Glycereth-26, Alcohol, 1, positioned the way the key-actives panel on this page describes, rather than actives assumed from the product name. It is used after toner and before moisturizer, as the routine's concentrated treatment step.

How do I use Post Alpha First Cure Serum?

Apply after toner and before moisturizer. Pat or smooth it over a cleansed face and let it absorb before the next step, AM and PM. Keep the same order every time you use it so you can tell what is actually working, and give a new step a few weeks before judging the result.

Is Post Alpha First Cure Serum the authentic Korean-market formula?

Yes. This listing is Cell Fusion C's Korean-market formula: the same ingredient list, barcode and batch code as the unit sold on shelves in Korea, rather than a version reformulated for US retail. That is the whole reason to buy a Korean-market brand from a specialist rather than a general retailer.

Where does Post Alpha First Cure Serum fit if I already use sunscreen or makeup?

Apply Post Alpha First Cure Serum before sunscreen or makeup, and let it absorb fully first so it does not pill under the next layer. Sunscreen still goes on last in the morning, and makeup after that, regardless of how many treatment steps come before it.

Who is Post Alpha First Cure Serum suited for?

It is not restricted to any one skin tone or age group. As with any new step, patch-test on the inner arm first if you are new to this formula or to Cell Fusion C.

Cell Fusion C

Post Alpha First Cure Serum 50ml

Name: Cell Fusion C Post Alpha First Cure Serum 50ml
Brand: Cell Fusion C
SKU: 4605386508
Price: 30.0 USD
Availability: InStock

Post Alpha First Cure Serum is Cell Fusion C's ampoule serum (50ml), built around Beta-Glucan and Glycereth-26. It is used after toner and before moisturizer, as the routine's concentrated treatment step. This is over-labeled in English for US sale rather than reformulated for the US market.

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$30.00

50 ml

$60.00 per 100 ml

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

Suited to: NormalCombinationDrySensitive

Helps with: Dehydration and a barrier that feels compromisedA concentrated treatment stepBuilding a layered routineA specific named concern

One-time purchase

$30.00

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Key benefits

Beta-Glucan is named directly on Post Alpha First Cure Serum's own ingredient list
Glycereth-26 is named directly on Post Alpha First Cure Serum's own ingredient list
Alcohol is named directly on Post Alpha First Cure Serum's own ingredient list
Post Alpha First Cure Serum fits after toner and before moisturizer, as the routine's concentrated treatment step
Cell Fusion C's Post Alpha First Cure Serum is sold here as the Korean-market formula: over-labeled in English for US sale rather than reformulated for the US market
Post Alpha First Cure Serum keeps the Korean barcode and batch code that print on the unit sold on shelves in Korea

Key actives

3Glycereth-26

Named directly on this formula's own ingredient list, at position 3 of 42 on this label's own ingredient list. This is read from the manufacturer's own listed order rather than assumed from the product name, which is what separates a genuine formula component from a name-only claim.

All products with Glycereth-26

4Alcohol

Named directly on this formula's own ingredient list, at position 4 of 42 on this label's own ingredient list. This is read from the manufacturer's own listed order rather than assumed from the product name, which is what separates a genuine formula component from a name-only claim.

Named directly on this formula's own ingredient list, at position 5 of 42 on this label's own ingredient list. This is read from the manufacturer's own listed order rather than assumed from the product name, which is what separates a genuine formula component from a name-only claim.

28Beta-Glucan

a moisture-holding, sugar-derived ingredient common in Korean hydration formulas. It sits at position 29 of 42 on this label's own ingredient list. This is read from the manufacturer's own listed order rather than assumed from the product name, which is what separates a genuine formula component from a name-only claim.

All products with Beta-Glucan

Inside the formula

Ingredients declared

Last

Fragrance on the list

3Glycereth-2628Beta-Glucan

3Glycereth-26
28Beta-Glucan

Where each key active sits on the declared ingredient list, by entry number. Position is proportion: the further forward, the larger its share.

1 of 4

38 of 41 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.
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.
Alcohol solvent: Alcohol here means ethanol. It dissolves ingredients water cannot, evaporates fast so a formula sets quickly and does not feel heavy, and thins texture. In quantity it can leave dry or reactive skin feeling tight, which is why many Korean formulas avoid it and some deliberately use it for a fast, weightless finish.
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.
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.
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.
Polymethyl Methacrylate absorbent: Polymethyl Methacrylate is an acrylic polymer used as fine spheres. They give a smooth, powdery slip and blur the look of surface texture.
Guaiazulene active: Guaiazulene is the deep blue compound distilled from chamomile and guaiac wood, and it is what colours a blue formula naturally. It is used for the look of reactive, reddened skin.
Pinus Pinaster Bark Extract plant extract: Maritime pine bark extract, the source of the proanthocyanidins sold under the pine bark name. It is used as a plant antioxidant.
Cucurbita Pepo (Pumpkin) Fruit Extract plant extract: Pumpkin fruit extract, carrying carotenoids, sugars and enzymes. It is used as a conditioning extract.
Avena Sativa (Oat) Kernel Extract plant extract: Oat Kernel Extract carries beta-glucan and avenanthramides, and it is one of the most reliably tolerated ingredients in skincare. It is used for the look of reddened, itchy-feeling skin.

26 more explained

Pteris Multifida Extract plant extract: Spider brake fern extract, a traditional East Asian herbal plant. It is used as a conditioning extract.
Cynara Scolymus (Artichoke) Leaf Extract plant extract: Artichoke Leaf Extract carries cynaropicrin and other plant antioxidants. It is used in formulas aimed at the look of visible pores and dullness.
Ulmus Davidiana Root Extract plant extract: Ulmus Davidiana is Japanese elm, whose inner bark yields a naturally slippery mucilage. Korean formulas use the root extract for that cushioned feel and for the look of reactive skin.
Amaranthus Caudatus Seed Extract plant extract: Amaranth seed extract, carrying squalene, sterols and peptides. It is used as a conditioning extract.
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 Pareth-12 emulsifier: C12-14 Pareth-12 is a solubiliser that keeps oils and fragrance in solution so a clear formula stays clear.
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.
Ammonium Acryloyldimethyltaurate/VP Copolymer thickener: This is a synthetic thickener that gels quickly and holds an emulsion stable across a wide pH range. It gives a light, non-tacky body.
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.
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.
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.
Polyquaternium-51 film former: Polyquaternium-51 is a polymer, sometimes sold as Lipidure, built on the same phosphorylcholine structure as a cell membrane. It holds water in a film on the surface and gives a distinctive soft, dry finish.
Disodium EDTA chelator: EDTA is a chelator: it locks up trace metal ions from water and packaging that would otherwise turn a formula cloudy, off-colour or rancid. It does nothing to skin and appears at a fraction of a percent.
Beta-Glucan polysaccharide: Beta-Glucan is a polysaccharide from oats or yeast. It holds a large amount of water, forms a soothing film, and is one of the ingredients formulators reach for in products aimed at reactive skin.
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.
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.
Methyl Diisopropyl Propionamide active: A synthetic cooling agent that gives the cool feeling of menthol without the mint smell. It is used where a formula wants the sensation but not the scent.
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.
Sucrose Stearate emulsifier: Sucrose Stearate is a sugar-based emulsifier chosen for a light finish in formulas built for reactive skin.
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.
Stearic Acid fatty acid: Stearic Acid is a saturated fatty acid from plant fats, and one of the three lipid classes skin's own barrier is built from. In a formula it thickens, stabilises the emulsion and can be turned into a soap-style cleanser by adding a base.
Palmitic Acid fatty acid: Palmitic Acid is a saturated fatty acid present in skin's own lipids. It thickens a formula, stabilises the emulsion and softens skin.
Saccharide Isomerate humectant: A plant-sugar complex whose structure resembles the sugars already bound to the skin surface, so it stays through washing. It is used as a long-acting humectant.
Hydrolyzed Lupine Protein protein: Hydrolyzed Lupine Protein comes from the lupin bean, which is unusually protein rich. Hydrolysed, it dissolves and works as a conditioning, water-holding protein.
Fragrance fragrance: Fragrance, or Parfum, is a single declaration standing for a whole scent blend, which can be dozens of materials. Regulators allow it as a trade secret, so a list showing only this word does not say what the scent is made of. It is the most common trigger named by people with reactive skin.
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.

How it works

Post Alpha First Cure Serum is an ampoule serum from Cell Fusion C. Cell Fusion C is a Korean dermo-cosmetic brand developed with a background in post-procedure and sensitive-skin care, with named ranges built around cooling, pH-balancing and brightening. On this jar's own ingredient list, Beta-Glucan, Glycereth-26, Alcohol, 1 are named directly, which is what the key-actives panel on this page is built from rather than from the product name alone. Beta-Glucan is a moisture-holding, sugar-derived ingredient common in Korean hydration formulas, and it is why this ampoule serum is positioned the way it is. Use it after toner and before moisturizer, as the routine's concentrated treatment step, giving it a minute to settle before the next layer goes on. Cell Fusion C sells this as the Korean-market formula, the same one stocked on shelves in Korea rather than a version built for the US market.

How to use

Apply after toner and before moisturizer. Pat or smooth it over a cleansed face and let it absorb before the next step, AM and PM.

Worth knowing

New to this formula or to the brand: patch-test on the inner arm and wait a day before applying it to the face.
Discontinue use and rinse the area with water if redness, itching or irritation develops.

Complete the routine

This itemCell Fusion C Post Alpha First Cure Serum 50ml$30.00
The last step of the morning, over everything elseCell Fusion C Laser Sunscreen SPF50+/ PA++++ 50ml$30.00
The treatment step of this routineCell Fusion C Laser Rejuvenation Ampoule 30ml$27.50

Total for 3 items$87.50

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Cell Fusion C Post Alpha First Cure Serum 50ml

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Cell Fusion C, Korean-market original