Fundamental Watery Oil Drop 50ml
A 50ml watery oil drop for the final step of a routine, lighter than a conventional face oil and easier to wear in the morning.
No reviews yet50 ml
$105.00 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- Dry skinNormal skinCombination skin
- Helps with
- Dry skin in winterA dewier looking finishWearing an oil in the morningFinishing 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
This is the finishing step of a routine: an oil that closes it rather than a treatment that starts it. It sits as a film on the surface, so it is pressed on rather than rubbed in and stays noticeable for a while. It goes over the cream, because an oil down first blocks everything water based that would follow. Used at two or three drops it works; used generously it is mostly a way to oil a pillowcase. It is watery for an oil, which is why people who have given up on face oils under makeup often get on with this one.
Key benefits
- What it is: face oil, 50ml, used the final leave on step, over a cream.
- Texture: an oil that stays as a film on the surface.
- Aimed at: dry skin in winter, a dewier looking finish, wearing an oil in the morning.
- Original Korean Formula: the version sold on Korean shelves, not a US reformulation.
Inside the formula
Inside the formula
What is the KLAIRS Fundamental Watery Oil Drop 50ml?
It is a 50ml face oil with an unusually light texture, used as the last leave on step over a moisturiser. Being an oil it still forms a surface film, so nothing water based goes on after it. Two or three drops warmed in the palms covers a face.
Does the face oil go before or after my moisturiser?
After. An oil forms a film that nothing water based will get through, so anything applied on top of it mostly stays on top. That makes it the final leave on step of a routine. A sleeping mask on the driest nights can still go over it.
How many drops should I use?
Two or three for the whole face, warmed in the palms and pressed on rather than rubbed in. This is the step people overdose most often, and the result is a shiny finish and an oily pillowcase rather than better skin. On oily areas use less or skip them.
Can I use the 50ml in the morning?
You can, though an oil film stays perceptible for a while and can sit oddly under makeup. One drop pressed on and given several minutes is the way to try it. Most people find the evening the easier slot for an oil.
Is this the same version sold in Korea?
Yes, this is the Korean-market formula rather than a US reformulation of it. The 50ml comes with Korean primary labelling and an intact barcode, which is what lets you verify what you have received.
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 (34): Aqua (Water), Glycerin, Butylene Glycol, Camellia Sinensis Leaf Water, Bifida Ferment Extract, Oryza Sativa (Rice) Extract, Dipropylene Glycol, Betaine, 1,2-Hexanediol, Aspergillus/Rice Ferment Extract, Camellia Sinensis Leaf Extract, Sorbitol, Sorbitan Sesquioleate, Ethylhexylglycerin, Arginine, Xanthan Gum, Hydroxyethylcellulose, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Isohexadecane, Dipotassium Glycyrrhizate, Sodium Hyaluronate, Carbomer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Tocopheryl Acetate, Laminaria Japonica Extract, Polysorbate 80, Sorbitan Oleate, Hydrogenated Lecithin, Ceramide NP, Disodium Phosphate, Polysorbate 60, Sodium Phosphate, Copper Tripeptide-1, Acetyl Hexapeptide-8
Ingredient list read from jolse.com on 10 September 2026.
32 of 34 explained
- Aqua (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.
- 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.
- Camellia Sinensis Leaf Water plant extract
- Camellia Sinensis Leaf Water is green tea distillate used in place of plain water as a base. It is far more dilute than the extract, so it sets the base rather than supplying the antioxidants.
- Bifida Ferment Extract ferment
- An extract of a bifidobacteria culture, the same organism behind bifida ferment lysate. It is used as a conditioning ferment.
- Oryza Sativa (Rice) Extract plant extract
- Rice Extract is the anchor of the Korean rice-skincare category. It carries starches, amino acids and ferulic acid, and it is used for the look of dullness and for a soft, blurred finish.
- 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.
- 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.
- 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.
- Camellia Sinensis Leaf Extract plant extract
- Camellia Sinensis is the tea plant. Green tea leaf extract carries catechins, among the most studied plant antioxidants, and is used for the look of redness and oily shine.
- Sorbitol humectant
- Sorbitol is a sugar alcohol used as a humectant. It hydrates like glycerin with a smoother, less sticky finish, and it adds a little body to watery textures.
- Sorbitan Sesquioleate emulsifier
- Sorbitan Sesquioleate is a water-in-oil emulsifier and pigment disperser. Cleansing oils use it so water can be worked into the oil at the rinse.
20 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.
- 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.
- 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.
- Hydroxyethylcellulose thickener
- Hydroxyethylcellulose is a cellulose thickener that builds a clear, smooth gel and holds the rest of the formula in suspension.
- Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer thickener
- This is a pre-neutralised polymer thickener that gels on contact with water and stabilises an emulsion without heat.
- Isohexadecane emollient
- Isohexadecane is a branched hydrocarbon emollient that spreads easily and leaves a dry finish. It is often paired with a thickener to build a gel-cream.
- Dipotassium Glycyrrhizate active
- Dipotassium Glycyrrhizate is a water-soluble salt derived from licorice root. It is the licorice fraction Korean formulas use for the look of redness, and it is far more stable in water than the whole extract.
- Sodium Hyaluronate humectant
- Sodium Hyaluronate is the salt of hyaluronic acid, and it is what most products labelled hyaluronic actually contain. The salt dissolves more readily and the molecule is smaller, so it sits in the outer layer of skin rather than only on top of it.
- Carbomer thickener
- Carbomer is a synthetic polymer that only gels once a base neutralises it, which is why arginine or tromethamine sits nearby on the list. It gives the clear, non-stringy gel texture a xanthan formula cannot reach.
- 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.
- Tocopheryl Acetate antioxidant
- Tocopheryl Acetate is a stable vitamin E ester that skin converts to tocopherol. It is used as an antioxidant and a light emollient and holds up better than plain vitamin E in a formula.
- 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.
- Polysorbate 80 emulsifier
- Polysorbate 80 is an emulsifier and solubiliser used to keep oils, fragrance and oil-soluble actives dissolved in water.
- Sorbitan Oleate emulsifier
- Sorbitan Oleate is an emulsifier for water-in-oil formulas. It keeps a rich cream or a cleansing oil from separating.
- 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.
- 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.
- Disodium Phosphate pH adjuster
- Sodium Phosphate is a buffer salt. It holds a formula at a steady pH so its actives stay in the form they work in.
- Polysorbate 60 emulsifier
- Polysorbate 60 is a water-loving emulsifier used with a fatty co-emulsifier to build stable lotions and creams.
- Copper Tripeptide-1 peptide
- Copper Tripeptide-1 is three amino acids bound to a copper ion, and the classic firming peptide in cosmetic chemistry. It is blue in solution, which is often why a serum carrying it is tinted, and it is used for the look of firmness and fine lines.
- Acetyl Hexapeptide-8 peptide
- Acetyl Hexapeptide-8 is a six-amino-acid peptide used for the look of expression lines, particularly around the eyes. It is the peptide sold under the name Argireline and is water soluble and stable.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809572890505
- Made in
- Republic of Korea
- Volume
- 50 ml
- Category
- Serum & Ampoule
- Actives
- Ceramide NP, Green Tea, Licorice Root, Peptides, Rice Extract, Sodium Hyaluronate
- 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 it at the end of a routine, over any cream, so nothing has to pass through it.
- Two or three drops warmed in the palms is a whole face, pressed on with flat hands.
- Go heavier on dry areas and lighter across the nose and forehead if those get shiny.
- Avoid mixing it into the same palm as a water based serum, since the two do not layer and you get pilling instead.
Worth knowing
- Keep it clear of the eyelid margin, since an oil travels easily into the eye.
- Use two or three drops rather than a palmful, or most of it ends up on the pillow.
- On oily areas use it sparingly or skip them altogether.
Complete the routine
- This itemKLAIRS Fundamental Watery Oil Drop 50ml$52.50
- Seal the routine in as the last stepKlairs Rich Moist Soothing Cream 80ml$42.50
- The treatment step of this routineKLAIRS Rich Moist Soothing Serum 80ml$32.50
Total for 3 items$127.50
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KLAIRS Fundamental Watery Oil Drop 50ml
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KLAIRS, Korean-market original
A 50ml watery oil drop for the final leave on step, stocked in the Original Korean Formula.
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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