Water Holding Tone Up Sun Serum 50ml
KAHI Water Holding Tone Up Sun Serum is a 50ml tinted sunscreen from KAHI, used as the last step of the morning routine, over moisturizer, or in place of foundation.
No reviews yet50 ml
$90.00 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- dry skincombination skinsensitive or reactive skinnormal skin
- Helps with
- a daily wear-under-makeup stepskin that dislikes a heavy or greasy finishan everyday layer as part of a full routinea lightweight finish for daily 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
This sun cream from KAHI is formulated for the Korean market and sold here as that exact formula, not a US-shelf reformulation. Its fluid texture is built for the role it plays in a routine: the final step of an AM routine, after moisturizer and before makeup. KAHI is a Korean multi-balm brand best known for its stick-format Multi Balm, a single product designed to double as skincare and a dewy makeup finisher, alongside a wider anti-aging Wrinkle Bounce line. The packaging, barcode, and batch code all trace back to the same product sold on its home market. It is meant to be used consistently at the final step of an AM routine rather than as an occasional treatment.
Key benefits
- The authentic Korean-market sun cream formula, not a US-shelf reformulation
- Arrives with its Korean-market barcode and batch code intact for a direct authenticity check against the packaging
- Fits the final step of an AM routine, after moisturizer and before makeup
- Reviewed for accuracy by a licensed dermo-cosmetic expert before it reaches the product page
Inside the formula
Inside the formula
Where does this tinted sunscreen go in my routine?
As the last step of the morning routine, over moisturizer, or in place of foundation. Anything thinner than a tinted sunscreen 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 it and not three changes at once.
Not on the ingredient list below: denatured or SD alcohol, essential oils, parabens, sulfate surfactants and mineral oil or petrolatum.
Full INCI (49): Water, Dibutyl Adipate, Butyloctyl Salicylate, Propanediol, Ethylhexyl Triazone, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Niacinamide, Drometrizole Trisiloxane, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Titanium Dioxide, Glycerin, 1,2-Hexanediol, Caprylyl Methicone, Pentylene Glycol, Sphingomonas Ferment Extract, Nasturtium Officinale Extract, Portulaca Oleracea Extract, Butylene Glycol, Vp/Eicosene Copolymer, Coco-Caprylate/Caprate, Decyl Glucoside, Dimethicone/Vinyl Dimethicone Crosspolymer, Sodium Polyacryloyldimethyl Taurate, Mica, Methylpropanediol, Polyhydroxystearic Acid, Dimethiconol, Trisiloxane, Polyacrylate Crosspolymer-6, Hydroxypropyl Methylcellulose Stearoxy Ether, Polyester-5, Ethylhexylglycerin, Polyether-1, Triethoxycaprylylsilane, Aluminum Hydroxide, Adenosine, Sodium Stearoyl Glutamate, Sodium Polyacrylate, Xanthan Gum, Poloxamer 188, Polymethyl Methacrylate, Tin Oxide, Tocopherol, Dextrin Palmitate, Isopropyl Titanium Triisostearate, CI 77480, Tannic Acid, Fragrance, Iron Oxide Yellow
Ingredient list read from kahi.co.kr on 13 September 2026.
40 of 49 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.
- 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.
- Butyloctyl Salicylate emollient
- Butyloctyl Salicylate is an ester used as a solvent and emollient, particularly for dissolving powdered ingredients evenly. Despite the salicylate name it is not an exfoliant.
- 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.
- 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.
- 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.
- Caprylyl Methicone silicone
- Caprylyl Methicone is a silicone with a fatty tail, so it mixes with plant oils as well as with silicones. It gives a dry slip and helps disperse powders.
- 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.
- 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.
- Portulaca Oleracea Extract plant extract
- Portulaca Oleracea is purslane. Its extract is unusually high in omega-3 fatty acids and antioxidants for a plant, and Korean formulas use it for the look of reddened, reactive skin.
- 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.
28 more explained
- Vp/Eicosene Copolymer film former
- A polymer with one water-loving half and one oil-loving half. It binds pigments into a film that resists water and rubbing.
- Coco-Caprylate/Caprate emollient
- Coco-Caprylate/Caprate is a coconut-derived ester used as a light, dry emollient in place of silicone. It spreads far and leaves a soft finish.
- Decyl Glucoside surfactant
- Decyl Glucoside is a sugar and coconut-derived surfactant, one of the mildest cleansers available. It produces a soft, low foam and rinses without stripping.
- Dimethicone/Vinyl Dimethicone Crosspolymer silicone
- This is a silicone elastomer, a soft springy gel. It fills the look of fine texture and gives the velvety, blurred finish of a primer.
- 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.
- Mica colorant
- Mica is a mineral ground into fine flakes. It scatters light, so it lightens a shade and gives the soft glow of a tinted or illuminating product.
- 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.
- Polyhydroxystearic Acid dispersant
- A polymer of hydroxystearic acid whose whole job is keeping mineral powders and pigments evenly suspended in oil instead of settling or streaking.
- Dimethiconol silicone
- Dimethiconol is a high-molecular-weight silicone that leaves a longer-lasting smooth film than dimethicone. It is used for lasting slip and shine.
- Trisiloxane silicone
- Trisiloxane is a very short silicone chain, so it is thin and volatile. It spreads a formula quickly and leaves almost nothing behind.
- Polyacrylate Crosspolymer-6 thickener
- Polyacrylate Crosspolymer-6 is a thickener chosen for a notably fresh, bouncy gel feel that breaks down to water on the skin.
- Hydroxypropyl Methylcellulose Stearoxy Ether thickener
- Modified cellulose with a fatty stearyl chain added, so it thickens and emulsifies at once. It gives a cushioned, slightly bouncy gel texture.
- 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.
- Polyether-1 film former
- A synthetic polyether polymer used as a film former and viscosity agent. It leaves a smooth, slightly tacky feel that helps a formula stay put.
- Triethoxycaprylylsilane silicone
- Triethoxycaprylylsilane is a coating applied to mineral powders so they disperse evenly and resist water rather than clumping.
- Aluminum Hydroxide absorbent
- Aluminum Hydroxide is a mineral powder used to coat pigments so they disperse evenly, and to absorb a little oil. It is not an antiperspirant salt.
- 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.
- 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.
- 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.
- 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.
- 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.
- Tin Oxide colorant
- A white mineral used in small amounts alongside pearl pigments, where it helps them disperse and brightens the effect.
- 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.
- Dextrin Palmitate thickener
- Dextrin Palmitate is a starch-based gelling agent for the oil phase. It thickens oils into a clear gel and keeps pigment evenly suspended.
- Isopropyl Titanium Triisostearate dispersant
- An ester used to coat mineral powders so they wet out in oil rather than clumping. It is a processing aid for pigments rather than an ingredient aimed at skin.
- Tannic Acid plant extract
- Tannic Acid is the tannin fraction of plants such as oak and tea. It binds to proteins on the surface, which is what gives a tannin its tightening, astringent feel.
- 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.
- Iron Oxide Yellow colorant
- Iron Oxides are mineral pigments in red, yellow and black, and the three are blended to make every skin-tone shade in a tinted product. They are inert and sit on the surface.
- Market
- Korean market, the version sold in Korea
- Made in
- Republic of Korea
- Volume
- 50 ml
- Category
- Sun Care
- 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
- Smooth a full fingertip's worth over the face and neck as the last step of your morning routine, working outward from the center of the face so coverage stays even under makeup.
Worth knowing
- Patch test a new mineral or chemical filter blend on the inner arm first if your skin has reacted to sunscreen before, since a filter that suits one person's skin does not always suit another's.
- Introduce any new Korean-market formula on its own for the first few uses before layering it with the rest of an existing routine, so any reaction is easy to trace to a single product.
Complete the routine
- This itemKAHI Water Holding Tone Up Sun Serum 50ml$45.00

- Seal the routine in as the last stepKAHI Eye Balm 9g$50.00

- The treatment step of this routineKAHI Wrinkle Bounce Skin Fit Blending Essence 30ml$75.00

Total for 3 items$170.00
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KAHI Water Holding Tone Up Sun Serum 50ml
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
KAHI, Korean-market original
The Original Korean Formula 50ml tinted sunscreen from KAHI, 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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