Teatree Calming Hydra Serum 40ml

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 (28): Water, Glycerin, Butylene Glycol, 2,3-Butanediol, Methy propanediol, 1,2-Hexanediol, Melaleuca Alternifolia (Tea Tree) Leaf Water, Panthenol, C12-14 Alketh-12, Sodium Hyaluronate, Carbomer, Tromethamine, Ammonium Acryloyldimethyltaurate/VP Copolymer, Ethylhexylglycerin, Allantoin, Melaleuca Alter-nifolia (Tea Tree) Leaf Oil, Xanthan Gum, Melaleuca Alternifolia (Tea Tree) Extract, Melaleuca Alternifolia (Tea Tree) Leaf Extract, Beta-Glucan, Tocopherol, 4-Terpineol, Zinc PCA, Dipropylene Glycol, Pentylene Glycol, Caprylyl/Capryl Glucoside, Hydrogenated Lecithin, Ceramide NP

Ingredient list read from mediheal.com on 10 September 2026.

25 of 28 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.

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.

2,3-Butanediol humectant

2,3-Butanediol is a fermentation-derived glycol. It hydrates and, like the other longer glycols, makes a formula harder for microbes to grow in.

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.

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.

Panthenol humectant

Panthenol is pro-vitamin B5: skin converts it to pantothenic acid. It is a humectant that holds water and leaves skin feeling soft and less tight, and it is one of the ingredients formulators reach for when a formula also contains something harsh.

C12-14 Alketh-12 emulsifier

C12-14 Alketh-12 is a solubiliser used to keep oils and fragrance dissolved in a water-based formula.

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.

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.

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.

Market

Korean market, the version sold in Korea

EAN (barcode)

8809936742440

Made in

Republic of Korea

Volume

40 ml

Category

Serum & Ampoule

Actives

Allantoin, Beta-Glucan, Ceramide NP, Panthenol, Sodium Hyaluronate, Tea Tree, Zinc PCA

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.

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.