Tea Tree Relief Serum 50ml
IUNIK Tea Tree Relief Serum is a 50ml serum with Niacinamide, used after toner and before moisturizer, morning and evening.
No reviews yet50 ml
$75.00 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- Oily and combination skin, since the base is tea tree and Centella leaf waters instead of an oilReactive skin, given the Allantoin, Beta-Glucan and licorice sitting behind the niacinamide
- Helps with
- Congested, blemish-prone areasUneven tone and lingering redness after a breakout
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
The Tea Tree Relief Serum is a 50ml serum, used after toner and before moisturizer, morning and evening. The active it is built around is Niacinamide, named fourth on its own ingredient list. The same list carries Allantoin, Adenosine and Dipotassium Glycyrrhizate, so the active is not the only thing on it worth naming. How much of the Niacinamide 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 IUNIK sells in Korea, Niacinamide and all.
Key benefits
- Niacinamide, the active this serum is built around
- Allantoin, Adenosine and Dipotassium Glycyrrhizate on the same list, actives
- Beta-Glucan on the same list, a polysaccharide
- Centella Asiatica Extract and Portulaca Oleracea Extract further down the same list
- Brassica Oleracea Italica (Broccoli) Extract and Brassica Oleracea Capitata (Cabbage) Leaf Extract further down the same list
- Niacinamide named fourth on the manufacturer list printed on this page
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 Niacinamide and not three changes at once.
Is this the Korean-market serum or a US version?
The Korean-market one, Niacinamide 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 Niacinamide?
Allantoin, Adenosine and Dipotassium Glycyrrhizate. The order they are printed in on this serum's panel is the order on the box, so you can see where Niacinamide sits relative to them. Further down the same panel: Beta-Glucan, Centella Asiatica Extract and Portulaca Oleracea 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 (33): Melaleuca Alternifolia (Tea Tree) Leaf Water, Centella Asiatica Leaf Water, Butylene Glycol, Niacinamide, Glycereth-26, Water, Centella Asiatica (Gotu Kola) Extract, Sodium Hyaluronate, Glycerin, 1,2-Hexanediol, Betaine, Caprylyl Glycol, Portulaca Oleracea (Green Purslane) Extract, Brassica Oleracea Italica (Broccoli) Extract, Medicago Sativa (Alfalfa) Extract, Brassica Oleracea Capitata (Cabbage) Leaf Extract, Triticum Vulgare (Wheat) Germ Extract, Brassica Campestris (Rapeseed) Extract, Raphanus Sativus (Radish) Seed Extract, Cellulose Gum, Allantoin, Beta-Glucan, Ethylhexylglycerin, Adenosine, Dipotassium Glycyrrhizate, Xanthan Gum, Pentylene Glycol, Aspalathus Linearis (Rooibos) Extract, Glycyrrhiza Glabra (Licorice) Root Extract, Chlorophyllin-Copper Complex, Commiphora Myrrha (Myrrh) Resin Extract, Perilla Frutescens Leaf Extract, Yucca Schidigera (Yucca) Root Extract
Ingredient list read from jolse.com on 10 September 2026.
27 of 33 explained
- Melaleuca Alternifolia (Tea Tree) Leaf Water plant extract
- Tea Tree Leaf Water is the distillate, used in place of plain water as a base. It carries a trace of the plant's aroma and none of the essential oil's strength.
- Centella Asiatica Leaf Water plant extract
- Centella Asiatica Leaf Water is the distilled water of the centella leaf, used in place of plain water as a formula base. It is far more dilute than the extract, so it sets the base rather than supplying the actives.
- 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.
- 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.
- 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.
- Centella Asiatica (Gotu Kola) Extract plant extract
- Centella Asiatica is the plant behind the whole cica category, sold as gotu kola or Madagascar centella. Its extract is the anchor of Korean formulas built for easily reddened skin, and its work is done by four triterpenes: asiaticoside, madecassoside, asiatic acid and madecassic acid.
- 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.
- 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.
- 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.
- 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.
15 more explained
- Portulaca Oleracea (Green Purslane) 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.
- Brassica Oleracea Italica (Broccoli) Extract plant extract
- Broccoli extract, carrying sulforaphane and vitamin C. It is used as a plant antioxidant.
- Brassica Oleracea Capitata (Cabbage) Leaf Extract plant extract
- Cabbage leaf extract. The leaf carries sulphur compounds, vitamin C and vitamin K, and the extract is used as a conditioning antioxidant botanical.
- Raphanus Sativus (Radish) Seed Extract plant extract
- Radish seed extract. It is used as a conditioning plant extract, and radish-root ferment filtrate from the same plant is a common natural preservative.
- Cellulose Gum thickener
- Cellulose Gum is plant cellulose modified to dissolve in water. It thickens, holds particles in suspension and gives a smooth, slippery body.
- Allantoin active
- Allantoin is a comfrey-derived compound used to condition skin and soften the outer layer so it feels smoother. It is one of the standard additions to a formula built for easily irritated skin.
- Beta-Glucan polysaccharide
- Beta-Glucan is a polysaccharide from oats or yeast. It holds a large amount of water, forms a soothing film, and is one of the ingredients formulators reach for in products aimed at reactive skin.
- 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.
- 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.
- 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.
- 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.
- Aspalathus Linearis (Rooibos) Extract plant extract
- Rooibos extract, from the South African red bush. It carries aspalathin and other flavonoids and no caffeine, and it is used as a plant antioxidant.
- Glycyrrhiza Glabra (Licorice) Root Extract plant extract
- Licorice Root Extract carries glabridin and liquiritin. It is one of the classic plant ingredients used for the look of uneven tone and redness, and it appears in almost every brightening formula that avoids synthetic actives.
- Perilla Frutescens Leaf Extract plant extract
- Kkaennip, the perilla leaf eaten across Korea. Its extract carries rosmarinic acid and is used as an antioxidant conditioning extract.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809728080071
- Made in
- Republic of Korea
- Volume
- 50 ml
- Category
- Serum & Ampoule
- Actives
- Adenosine, Allantoin, Beta-Glucan, Centella Asiatica, Licorice Root, Niacinamide, Sodium Hyaluronate, Tea Tree
- 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.
Inside the formula
Inside the formula
How to use
- After toner, before moisturizer.
- Apply a few drops over the face, or spot-treat congested areas.
- Follow with a lightweight moisturizer.
Complete the routine
- This itemIUNIK Tea Tree Relief Serum 50ml$37.50

- An as-needed step, in place of the prep layeriUNIK Lime Moisture Mild Peeling Gel 90ml$32.50

- The treatment step of this routineiUNIK Noni Light Oil Serum 50ml$55.00

Total for 3 items$125.00
Reviews
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iUNIK Tea Tree Relief Serum 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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IUNIK, Korean-market original
The Original Korean Formula serum from IUNIK, 50ml formulated with Niacinamide and Allantoin, 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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