One-day's you
Pore Tightening Ampoule Serum 30ml
One-day's you's Pore Tightening Ampoule Serum is 30 ml, used at the treatment step, between toner and moisturizer.
No reviews yet30 ml
$116.67 per 100 ml
- Ships from California or direct from Korea
- Korean barcode and batch code intact
In stock. Arrives in 3 to 7 business days
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Inside the formula
Inside the formula
How to use
- Use the Pore Tightening Ampoule Serum after toner and before moisturizer, morning and evening.
- Apply a moderate amount evenly over the face. Pat lightly to help the serum absorb.
- It sits between the toner and the moisturizer, and it is the layer most worth leaving alone for a minute before anything covers it.
- Twice a day, every day. Do not use it as a spot application on one area; an ampoule is a routine step, not a targeted dose.
Does this product contain added fragrance?
No. Neither fragrance nor parfum appears on the ingredient list for One-day's you Pore Tightening Ampoule Serum 30ml. Those are the two names a cosmetic label uses for an added scent blend, so a formula carrying one would name it. The full list is printed in the Ingredients section of this page.
Does this product contain essential oils?
Yes. The ingredient list for One-day's you Pore Tightening Ampoule Serum 30ml includes Citrus Aurantium Dulcis (Orange) Peel Oil, Cymbopogon Martini Oil, Lavandula Angustifolia (Lavender) Oil and Pogostemon Cablin Oil. Aromatic plant oils are listed under their botanical name rather than as fragrance, so they are named separately from any fragrance or parfum entry.
Are any declarable fragrance allergens listed?
Yes. Limonene, Geraniol and Linalool appear on the ingredient list for One-day's you Pore Tightening Ampoule Serum 30ml. These belong to the 26 fragrance components that EU cosmetic labelling requires to be named individually rather than folded into a fragrance entry.
Does this product contain denatured or SD alcohol?
No. The ingredient list for One-day's you Pore Tightening Ampoule Serum 30ml names no denatured alcohol, SD alcohol or ethanol. Fatty alcohols such as cetyl and cetearyl alcohol are a different class of ingredient, used as emollients and thickeners, and are not counted here.
Not on the ingredient list below: fragrance or parfum, denatured or SD alcohol, silicones, parabens, sulfate surfactants, mineral oil or petrolatum and added color.
Full INCI (34): Hamamelis Virginiana (Witch Hazel) Water, Butylene Glycol, Glycerin, Glycereth-26, Cynanchum Atratum Extract, Paeonia Suffruticosa Root Extract, Niacinamide, Diospyros Kaki Leaf Extract, Vitis Vinifera (Grape) Fruit Extract, Coffea Arabica (Coffee) Seed Extract, Carthamus Tinctorius (Safflower) Flower Extract, Polygonum Cuspidatum Root Extract, Camellia Sinensis Leaf Extract, Castanea Sativa (Chestnut) Shell Extract, Zanthoxylum Piperitum Fruit Extract, Sodium Hyaluronate, Illicium Verum (Anise) Fruit Extract, Trehalose, Adenosine, Hydroxyethylcellulose, Dipotassium Glycyrrhizate, Malt Extract, Octyldodeceth-16, 1,2-Hexanediol, Ethylhexylglycerin, Caprylyl Glycol, Water, Citrus Aurantium Dulcis (Orange) Peel Oil, Cymbopogon Martini Oil, Lavandula Angustifolia (Lavender) Oil, Pogostemon Cablin Oil, Limonene, Geraniol, Linalool
Ingredient list read from 7dasmc-xz.myshopify.com on 13 September 2026.
33 of 34 explained
- Hamamelis Virginiana (Witch Hazel) Water plant extract
- Witch hazel distillate, used in place of part of the plain water in a formula. It is much more dilute than the extract, and commercial witch hazel water often carries alcohol.
- 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.
- 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.
- 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.
- Cynanchum Atratum Extract plant extract
- Cynanchum Atratum is a root used in Korean traditional practice. Its extract is used as a conditioning plant extract in formulas for reactive skin.
- Paeonia Suffruticosa Root Extract plant extract
- Paeonia Suffruticosa is tree peony, a long-standing East Asian medicinal plant. Its root extract carries paeoniflorin and is used for the look of reddened skin.
- 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.
- Diospyros Kaki Leaf Extract plant extract
- Diospyros Kaki is the persimmon tree. Its leaf extract carries tannins and vitamin C and is used as an antioxidant extract.
- Vitis Vinifera (Grape) Fruit Extract plant extract
- Grape Fruit Extract carries polyphenols and fruit acids. It is used as an antioxidant plant extract.
- Coffea Arabica (Coffee) Seed Extract plant extract
- Coffee Seed Extract carries caffeine and chlorogenic acid. It is used as an antioxidant extract and, in eye and body formulas, for the look of puffiness.
- Carthamus Tinctorius (Safflower) Flower Extract plant extract
- Safflower Flower Extract is a traditional East Asian dye and skincare plant. It is used as a conditioning antioxidant extract and can tint a formula.
- Polygonum Cuspidatum Root Extract plant extract
- Polygonum Cuspidatum is Japanese knotweed, the main commercial source of resveratrol. Its root extract is used as an antioxidant plant extract.
21 more explained
- 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.
- Zanthoxylum Piperitum Fruit Extract plant extract
- Zanthoxylum Piperitum is Korean pepper. Its fruit extract is used as a conditioning plant extract and is often paired with pulsatilla and usnea in Korean formulas.
- 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.
- Illicium Verum (Anise) Fruit Extract plant extract
- Star Anise Fruit Extract carries aromatic plant compounds. It is used as a conditioning extract and contributes scent.
- Trehalose humectant
- Trehalose is a sugar that some desert plants use to survive drying out. In skincare it is a humectant that holds water in the outer layer and helps a formula feel comfortable rather than tight.
- 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.
- Hydroxyethylcellulose thickener
- Hydroxyethylcellulose is a cellulose thickener that builds a clear, smooth gel and holds the rest of the formula in suspension.
- 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.
- Malt Extract plant extract
- Malt Extract comes from sprouted barley and carries sugars, amino acids and B vitamins. It is used as a conditioning, hydrating extract.
- Octyldodeceth-16 emulsifier
- An ethoxylated branched fatty alcohol. It emulsifies and also gives a formula a soft, cushioned slip.
- 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.
- 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.
- Caprylyl Glycol preservative booster
- Caprylyl Glycol is a glycol that conditions skin and, more importantly, strengthens a preservative system so less of the traditional preservative is needed. It appears in most modern formulas built without parabens.
- 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.
- Citrus Aurantium Dulcis (Orange) Peel Oil fragrance component
- Sweet Orange Peel Oil is a citrus essential oil carrying limonene. It scents a formula, and limonene is one of the components EU labelling names separately.
- Cymbopogon Martini Oil fragrance component
- Palmarosa oil, distilled from a grass related to lemongrass. It is high in geraniol and carries a rose like scent, so it is used as an aromatic oil.
- Lavandula Angustifolia (Lavender) Oil fragrance component
- Lavender Oil is an essential oil carrying linalool and linalyl acetate. It scents a formula, and linalool is one of the fragrance components EU labelling requires to be named separately.
- Pogostemon Cablin Oil fragrance component
- Patchouli oil, steam distilled from the leaves. It is one of the heaviest, longest lasting aromatic oils and is used to scent a formula and to hold lighter notes in place.
- Limonene fragrance component
- Limonene is the citrus-peel aromatic. It appears here because EU labelling requires 26 fragrance components to be named individually rather than hidden inside "fragrance", and it is one of them.
- Geraniol fragrance component
- Geraniol is a rose-scented aromatic found in geranium and citronella oils. It is one of the 26 declarable fragrance components.
- Linalool fragrance component
- Linalool is a floral aromatic found in lavender, bergamot and coriander. It is one of the 26 fragrance components EU labelling requires to be declared by name.
- Made in
- Republic of Korea
- Volume
- 30 ml
- Category
- Serum & Ampoule
- 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.
Complete the routine
- This itemOne-day's you Pore Tightening Ampoule Serum 30ml$35.00
- Prep after cleansing, before the treatment stepOne-day's you Help Me Honey-C Pad 125ml(60pads)$30.00
- Cleanse first, so the next step meets bare skinOne-day's you P.Z. Ssoc Ssoc No More Blackhead 100ml$27.50
Total for 3 items$92.50
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One-day's you Pore Tightening Ampoule Serum 30ml
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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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