Refreshing Sea Kelp Serum
Lactobacillus and kelp ferment filtrate is the first entry, five places ahead of water, with niacinamide fourth and xylitol and erythritol behind it for the cool. Laminaria digitata water, sea water and four more algae extracts close the list. 30 ml from Biodance.
No reviews yet30ml
$63.30 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- Dehydrated skinSensitive skinDull, uneven tone
- Helps with
- Shoppers looking for Laminaria Japonica Extract in a serumRoutines that want Laminaria Japonica Extract and Niacinamide in one stepFilling the serum step with a Korean-market formulaAnyone who wants the Laminaria Japonica Extract serum sold on Korean shelves
Sold out.
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One email, the moment this exact unit is back in stock. Not a newsletter and not a sequence, and your address comes off the list the second it is sent.
- 30-day returns
- Free US shipping on orders of $100 or more
- Tracked delivery to your door
How it works
The Refreshing Sea Kelp Serum is a 30ml serum, used after toner and before moisturizer, morning and evening. The plant extract it is built around is Laminaria Japonica Extract, named twenty-sixth on its own ingredient list. The same list carries Niacinamide, Adenosine and Tocopherol, so the plant extract is not the only thing on it worth naming. How much of the Laminaria Japonica Extract stays on the skin, and for how long, is decided by the serum format rather than by the list alone. This is the Original Korean Formula, the serum Biodance sells in Korea, Laminaria Japonica Extract and all.
Key benefits
- Laminaria Japonica Extract, the plant extract this serum is built around
- Niacinamide and Adenosine on the same list, actives
- Tocopherol on the same list, an antioxidant
- Melia Azadirachta Leaf Extract on the same list, a plant extract
- Jania Rubens Extract and Kjellmaniella Gyrata Extract further down the same list
- Spirulina Platensis Extract and Calcium Chloride further down the same list
Inside the formula
Inside the formula
Biodance Refreshing Sea Kelp Serum
Where does this serum go in my routine?
After toner and before moisturizer, morning and evening. Anything thinner than a serum goes on before it, and anything richer goes on after. If you are adding it to a routine you already like, give it a week on its own first, so what you see is the Laminaria Japonica Extract and not three changes at once.
Is this the Korean-market serum or a US version?
The Korean-market one, Laminaria Japonica Extract and all. We match this serum to its Korean barcode before it reaches the shelf, which is the check that tells you which market release you are holding.
What else is on the list besides Laminaria Japonica Extract?
Niacinamide, Adenosine and Tocopherol. The order they are printed in on this serum's panel is the order on the box, so you can see where Laminaria Japonica Extract sits relative to them. Further down the same panel: Melia Azadirachta Leaf Extract, Jania Rubens Extract and Kjellmaniella Gyrata Extract.
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): Lactobacillus/Kelp Ferment Filtrate, Propanediol, Butylene Glycol, Niacinamide, 1,2-Hexanediol, Water (Aqua), Xylitol, Erythritol, Glycerin, Gellan Gum, Xanthan Gum, Calcium Chloride, Ethylhexylglycerin, Adenosine, Melia Azadirachta (Neem) Leaf Extract, Glyceryl Acrylate/Acrylic Acid Copolymer, PVM/MA Copolymer, Melia Azadirachta Flower Extract, Laminaria Digitata Water, Sea Water, Sodium Polyacrylate, Tocopherol, Saccharide Isomerate, Jania Rubens Extract, Kjellmaniella Gyrata Extract, Laminaria Japonica Extract, Spirulina Platensis Extract
Ingredient list read from incidecoder.com on 30 August 2026.
26 of 27 explained
- Lactobacillus/Kelp Ferment Filtrate ferment
- This is kelp fermented by lactobacillus and then filtered. Fermentation breaks the seaweed polysaccharides into smaller, more soluble pieces than the plain extract carries.
- 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.
- 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.
- 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.
- 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.
- Water (Aqua) 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.
- 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.
- Erythritol humectant
- Erythritol is a sugar alcohol humectant with a faint cooling feel as it dissolves. It hydrates and helps a formula spread without tack.
- 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.
- Gellan Gum thickener
- Gellan Gum is a fermentation-derived polysaccharide that sets a clear, brittle gel at very low levels. It is used to suspend particles without thickening the liquid much.
- 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.
- Calcium Chloride mineral
- Calcium Chloride is a mineral salt used in traces to balance a formula and to firm up gels made with alginate or gellan gum.
14 more explained
- 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.
- 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.
- Melia Azadirachta (Neem) Leaf Extract plant extract
- Melia Azadirachta is neem. Its leaf and flower extracts are long-standing Ayurvedic ingredients, and Korean formulas use them in products aimed at the look of congested, blemish-prone skin.
- Glyceryl Acrylate/Acrylic Acid Copolymer film former
- This is a polymer that forms a moisture-holding film on the surface, usually supplied with glycerin and propylene glycol as a hydrating complex.
- PVM/MA Copolymer film former
- PVM/MA Copolymer is a film-forming polymer used to hold a formula in place and, in a mask, to give the peel-off film its strength.
- Laminaria Digitata Water plant extract
- The water fraction of oarweed kelp, used in place of part of the plain water in a formula. It is far more dilute than a kelp extract.
- Sea Water mineral
- Sea Water is filtered and desalinated seawater used in place of plain water. It carries magnesium, calcium and potassium, so it brings the mineral balance of the base closer to skin's own.
- 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.
- 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.
- 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.
- Jania Rubens Extract plant extract
- Extract of a red coralline seaweed that builds calcium into its own structure, so the extract is mineral-rich. It is a conditioning marine extract.
- Kjellmaniella Gyrata Extract plant extract
- Extract of a Japanese kelp. Kelp extracts carry alginate and fucoidan, which hold water and thicken a formula slightly.
- Laminaria Japonica Extract plant extract
- Laminaria Japonica is kombu kelp. Its extract carries alginates, minerals and iodine, and it is used as a hydrating, mineral-rich ingredient.
- Spirulina Platensis Extract plant extract
- Spirulina is a blue-green microalga, unusually high in protein. Its extract carries amino acids and the blue pigment phycocyanin, which can tint a formula.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809891185030
- Made in
- Republic of Korea
- Volume
- 30ml
- Category
- Serum & Ampoule / Lightweight Hydration Serum
- Actives
- Adenosine, Niacinamide
- 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. 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.
How to use
- Use the Refreshing Sea Kelp Serum after your toner and before your moisturizer, morning and evening.
- Two or three drops for the whole face, pressed in with the flats of your fingers while skin is still damp.
- Follow with a moisturizer within a minute or two, because a thin serum left bare dries down and takes surface water with it.
- Twice a day, every day. Do not use it as your only layer on skin that already feels tight; a serum is not a seal.
Worth knowing
- Patch test this serum on a small area and wait a day before using it more widely, especially with Laminaria Japonica Extract on the list.
- Introduce this serum on its own for the first week, so anything your skin does is traceable to the Laminaria Japonica Extract rather than to three changes at once.
Reviews
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Biodance Refreshing Sea Kelp Serum
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Biodance, Korean-market original
The Original Korean Formula serum from Biodance, 30ml formulated with Laminaria Japonica Extract and Niacinamide, shipped from California or direct from Korea.
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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