K-Secret
SEOUL 1988 SUN : COLLAGEN COMPLEX 7 + PLUM 50ml
K-Secret SEOUL 1988 SUN : COLLAGEN COMPLEX 7 + PLUM 50ml is a product (50 ml) from K-Secret's Korean-market lineup, sourced for the Korean market.
No reviews yet50 ml
$85.00 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- NormalCombinationDry
- Helps with
- A product step in a Korean-style routineShoppers who want K-Secret's Korean-market formula rather than a US-reformulated versionEveryday use alongside the rest of a routine
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
K-Secret SEOUL 1988 SUN: COLLAGEN COMPLEX 7 + PLUM 50ml is a product sold in K-Secret's Korean-market packaging and format. It takes its usual place in a routine of a Korean-style layering routine, used am and/or pm, at the step appropriate for its texture, on cleansed skin.
Key benefits
- What it is: a 50ml cream from K-Secret, for the moisturizing step.
- On the ingredient list: Glycerin, Niacinamide, Butylene Glycol, confirmed on this product's own manufacturer list rather than assumed from the category.
- Fits into the routine: finishes the routine and seals in everything applied underneath it.
- Original Korean Formula: the version sold on Korean shelves, not a US reformulation.
Inside the formula
Inside the formula
What is K-Secret SEOUL 1988 SUN : COLLAGEN COMPLEX 7 + PLUM 50ml for?
It is a product in K-Secret's Korean-market lineup. AM and/or PM, at the step appropriate for its texture, on cleansed skin. What ships is the same Korean-market formula and packaging K-Secret sells at home, not a US-reformulated version.
Where does this go in a routine, and how do I use it?
AM and/or PM, at the step appropriate for its texture, on cleansed skin. It takes its usual place in a routine of a Korean-style layering routine. Give it a minute to settle before adding the next product on top.
Is this the authentic Korean-market version, not a US retail reformulation?
Yes. What we ship is K-Secret's Korean-market formula and packaging, sourced for the Korean market rather than a US-facing reformulation. The intact Korean barcode and batch code on the box are part of that proof.
Who is this product best suited for?
Normal, Combination and Dry skin types are the best fit, based on what this product type is generally formulated for. Patch test first, as with any new addition to a routine.
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 (39): Water, Collagen Water, Neopentyl Glycol Diheptanoate, Glycerin, C12-15 Alkyl Benzoate, Dibutyl Adipate, Propanediol, Niacinamide, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Ethylhexyl Triazone, Terephthalylidene Dicamphor Sulfonic Acid, Poly C10-30 Alkyl Acrylate, 1,2-Hexanediol, Polyglyceryl-6 Stearate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Tromethamine, Sodium Polyacryloyldimethyl Taurate, Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer, Butylene Glycol, Ammonium Acryloyldimethyltaurate/VP Copolymer, Potassium Cetyl Phosphate, Hydrogenated Palm Glycerides, Hydroxyacetophenone, Polyglyceryl-6 Behenate, Sphingomonas Ferment Extract, Ethylhexylglycerin, Hydrolyzed Collagen, Adenosine, Collagen Extract, Avena Sativa (Oat) Kernel Extract, Vigna Radiata Seed Extract, Lactobacillus Ferment, Coix Lacryma-Jobi Ma-yuen Seed Extract, Prunus Salicina Fruit Extract, Soluble Collagen, Collagen, Collagen Amino Acids, Soluble Collagen Crosspolymer, Zinc Hydrolyzed Collagen
Ingredient list read from jolse.com on 10 September 2026.
32 of 39 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.
- Collagen Water protein
- Collagen Water is a collagen solution used in place of plain water as a formula base. It hydrates and leaves a conditioned feel; the collagen molecule itself stays on the surface.
- Neopentyl Glycol Diheptanoate emollient
- Neopentyl Glycol Diheptanoate is a light ester emollient chosen for a dry, powdery finish. It also disperses pigment evenly.
- 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.
- C12-15 Alkyl Benzoate emollient
- C12-15 Alkyl Benzoate is a light ester emollient and solvent. It gives a silky finish, dissolves pigments and UV filters, and mildly discourages microbial growth.
- Dibutyl Adipate emollient
- Dibutyl Adipate is a light ester emollient used as a solvent for UV filters and pigments and to keep a formula from feeling tacky.
- 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.
- 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.
- Poly C10-30 Alkyl Acrylate film former
- Poly C10-30 Alkyl Acrylate is a polymer that forms a soft film, thickens the oil phase and gives a smooth, non-greasy 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.
- Polyglyceryl-6 Stearate emulsifier
- Polyglyceryl-6 Stearate is a mild plant-derived emulsifier for oil-in-water creams.
- 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.
20 more explained
- 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.
- Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer silicone
- A silicone elastomer powder. It changes how light falls on skin so texture looks softer, absorbs a little oil, and leaves a dry velvet finish.
- 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.
- 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.
- 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.
- Hydroxyacetophenone preservative booster
- Hydroxyacetophenone is an antioxidant that also strengthens a preservative system, so a formula needs less traditional preservative. Korean formulas pair it with 1,2-hexanediol constantly.
- Polyglyceryl-6 Behenate emulsifier
- A polyglycerin ester with a long fatty chain. It emulsifies and thickens at the same time, which is how a cream gets body without wax.
- Sphingomonas Ferment Extract ferment
- Sphingomonas Ferment Extract is the liquid left after Sphingomonas bacteria have fermented a sugar substrate. It carries water-holding polysaccharides and is used as a conditioning ferment.
- 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.
- Hydrolyzed Collagen protein
- Hydrolyzed Collagen is collagen broken into fragments small enough to dissolve in water. It cannot become collagen in skin; what it does is hold water at the surface and leave a smooth, conditioned film.
- 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.
- 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.
- 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.
- Vigna Radiata Seed Extract plant extract
- Mung bean seed extract, the nokdu of Korean cleansing powders. It carries starches, proteins and saponins and is used as a conditioning, mildly cleansing extract.
- Lactobacillus Ferment ferment
- Lactobacillus Ferment is the liquid left after lactobacillus bacteria have fermented a plant or milk substrate. It carries the small molecules the fermentation produced, including lactic acid and amino acids, and is used for the look of dull, uneven skin.
- Coix Lacryma-Jobi Ma-yuen Seed Extract plant extract
- Adlay, or Job tears, a grain used in both Korean cooking and Korean herbal practice. The seed extract carries starch-derived sugars and amino acids.
- Soluble Collagen protein
- Soluble Collagen is collagen kept in its intact triple-helix form and dissolved rather than cut up. It sits on the surface as a water-holding film.
- Collagen protein
- Collagen is the structural protein that makes up most of the dermis. Applied on top it is far too large to enter skin, so in a formula it works as a humectant and a smoothing film former.
- Collagen Amino Acids amino acid
- Collagen Amino Acids are collagen broken all the way down to its individual amino acids. At that size they act as humectants, the same job skin's own amino acids do.
- Zinc Hydrolyzed Collagen protein
- Short-chain collagen fragments paired with zinc. It works as a humectant and delivers the trace mineral with it.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809695240669
- Made in
- Republic of Korea
- Volume
- 50 ml
- Category
- Sun Care
- Actives
- Adenosine, Collagen, 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
- AM and/or PM, at the step appropriate for its texture, on cleansed skin.
Worth knowing
- Patch test on the inner arm 24 hours before adding this to your face or scalp, as with any new product.
Complete the routine
- This itemK-Secret SEOUL 1988 SUN : COLLAGEN COMPLEX 7 + PLUM 50ml$42.50

- Seal the routine in as the last stepK-SECRET SEOUL 1988 Cream : Snail Mucin 93% + Rice 100ml$50.00

- From the same Korean-market lineK-Secret Advanced Regenerating Eye Gel Patches$19.99

Total for 3 items$112.49
Reviews
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K-SECRET SEOUL 1988 SUN : COLLAGEN COMPLEX 7 + PLUM 50ml
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
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K-Secret, Korean-market original
SEOUL 1988 SUN : COLLAGEN COMPLEX 7 + PLUM 50ml from K-Secret: a cream in the Original Korean Formula, not the US-shelf version.
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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