Z+PIDERM
ECF Skin Barrier Cream Toner$23.52Bonajour
Biome Shield 5X Cera Toner 150ml
Bonajour's Biome Shield 5x Cera Toner (150ml) carries four named ceramides, Ceramide AS, AP, NS, and EOP, in a toner-format first step meant to reinforce a stressed or weather-worn moisture barrier before the rest of a routine layers on top.
No reviews yet$32.50
150 ml
$21.67 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- NormalCombinationDry
- Helps with
- The first hydrating step after cleansingPrepping skin before serum and moisturizerDaily use, morning and evening
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
Biome Shield 5X Cera Toner 150ml is a toner built on Ceramide AS, a barrier lipid from the ceramide family, named 9 of 29 entries on Bonajour's own manufacturer INCI for this formula. Ceramide AP runs alongside it, a barrier lipid from the ceramide family, and the rest of the list rounds out a Bonajour formula built for this format rather than a stripped-down version of it. It takes the first step after cleansing, and the toner format is the reason it behaves the way it does once it is on skin. A toner in this format is a thin liquid meant to sit on skin briefly and prep it for the layers that follow, not a step meant to linger.
Key benefits
- Built on Ceramide AS, a barrier lipid from the ceramide family
- Ceramide AP runs alongside it, a barrier lipid from the ceramide family
- No parfum or fragrance ingredient on the list
- 150ml toner sold in Bonajour's Korean-market packaging, not a US-reformulated version
- Takes the first step after cleansing
- 29 ingredients on the manufacturer's own list, in the order Bonajour lists them
How to use
- Apply to clean skin with a cotton pad or the palms immediately after cleansing.
Is the Biome Shield 5X Cera Toner 150ml sold here Bonajour's Korean-market formula?
Yes. What ships is Bonajour's release for the Korean market: the formula and packaging sold in Korea, with the Korean-market barcode and batch code intact on the box rather than swapped for an export or US-retail label.
Where does the Biome Shield 5X Cera Toner 150ml go in a routine?
It takes the first step after cleansing. That placement follows from what a toner is, not from anything unusual about this specific unit. A toner in this format is a thin liquid meant to sit on skin briefly and prep it for the layers that follow, not a step meant to linger, so moving it earlier or later in a routine works against the format rather than with it.
What does Ceramide AS do in this toner?
Ceramide AS is A barrier lipid from the ceramide family. It appears at position 9 of 29 on Bonajour's own manufacturer ingredient list for this formula, which is real evidence of what the formula is built around rather than a marketing label placed over it.
Does the Biome Shield 5X Cera Toner 150ml contain fragrance?
No. Parfum and fragrance do not appear anywhere on the manufacturer's own ingredient list for this formula, which is one reason it reads as a shorter, calmer list than a heavily scented formula in the same category.
How does buying the Biome Shield 5X Cera Toner 150ml here compare with a US retailer carrying the same name?
A US listing under the same product name can be a reformulated export version and rarely states which one it is selling. What we carry is the Korean-market Bonajour release, identified by its intact Korean barcode and batch code on the box rather than a relabeled export carton, so the unit you get matches what is sold on shelf in Korea.
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 (28): Galactomyces Ferment Filtrate, Water, Butylene Glycol, Glycereth-26, Glycerin, Bifida Ferment Lysate, Laminaria Digitata Extract, Chlorella Vulgaris Extract, Ceramide AS, Ceramide AP, Ceramide NS, Ceramide EOP, Ceramide NP, Betaine, Saccharide Isomerate, 1,2-Hexanediol, Pentylene Glycol, Xanthan Gum, Allantoin, Cholesterol, Sea Water, Adenosine, Dipropylene Glycol, Hydrogenated Lecithin, Glyceryl Stearate, Caprylyl Glycol, Ethylhexylglycerin, Phenethyl Alcohol
Ingredient list read from inkeedecoder.com on 10 September 2026.
28 of 28 explained
- Galactomyces Ferment Filtrate ferment
- Galactomyces Ferment Filtrate is a yeast ferment filtered clear, the ingredient that made the Korean and Japanese essence category. It carries amino acids, vitamins and organic acids and is used for the look of dullness and rough texture.
- 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.
- 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.
- 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.
- 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.
- Bifida Ferment Lysate ferment
- Bifida Ferment Lysate is a bifidobacteria ferment with the cells broken open. It is the ingredient behind the first-essence category and is used for the look of tired, reactive skin.
- Laminaria Digitata Extract plant extract
- Oarweed kelp extract. It carries alginates, minerals and iodine and is used as a hydrating, mineral-rich marine ingredient.
- Chlorella Vulgaris Extract plant extract
- Chlorella Vulgaris is a freshwater green algae. Its extract carries proteins, chlorophyll and amino acids and is used as a conditioning ingredient.
- Ceramide AS barrier lipid
- Ceramide AS is a further member of the same lipid family. Its presence usually signals a formula built around a full ceramide profile rather than a single headline one.
- Ceramide AP barrier lipid
- Ceramide AP is a second cosmetic ceramide, distinguished by an extra hydroxyl group. Formulas that name several ceramides are copying the mix skin actually holds rather than relying on one.
- Ceramide NS barrier lipid
- Ceramide NS is another of the ceramides skin makes for itself. It is used alongside NP and AP so a formula supplies a mixture rather than a single lipid.
- Ceramide EOP barrier lipid
- Ceramide EOP is the ceramide with the longest tail, and in skin it acts as the rivet holding the lipid layers together. It is the third member of the standard cosmetic ceramide trio.
16 more explained
- 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.
- 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.
- Saccharide Isomerate humectant
- A plant-sugar complex whose structure resembles the sugars already bound to the skin surface, so it stays through washing. It is used as a long-acting humectant.
- 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.
- 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.
- 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.
- 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.
- Cholesterol barrier lipid
- Cholesterol is the third of the three lipids the outer layer of skin is built from, with ceramides and fatty acids. Formulas that carry all three are following the ratio skin itself holds.
- Sea Water mineral
- Sea Water is filtered and desalinated seawater used in place of plain water. It carries magnesium, calcium and potassium, so it brings the mineral balance of the base closer to skin's own.
- 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.
- 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.
- 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.
- Glyceryl Stearate emulsifier
- Glyceryl Stearate is glycerin joined to stearic acid, and one of the most used emulsifiers in skincare. It holds oil and water together and thickens the result, and it softens skin at the same time.
- 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.
- 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.
- Phenethyl Alcohol preservative booster
- Phenethyl Alcohol is an aromatic alcohol with a faint rose scent. It works as a preservative booster and a light solvent, and it is common in formulas built without traditional preservatives.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809554962305
- Made in
- Republic of Korea
- Volume
- 150 ml
- Category
- Toner
- Actives
- Adenosine, Allantoin, Ceramide NP, Ceramides
- 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
28
Ingredients declared
No fragrance
on the list
Worth knowing
- Patch test on the inner arm first, as with any new step added to a routine.
- Discontinue if irritation develops and check the ingredient list against any known sensitivity.
Complete the routine
- This itemBonajour Biome Shield 5X Cera Toner 150ml$32.50
- Prep after cleansing, before the treatment stepBonajour Propolis Energy Toner 205ml$35.00
- Seal the routine in as the last stepBonajour Green Tea Water Bomb Cream 100ml$32.50
Total for 3 items$100.00
Reviews
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Bonajour Biome Shield 5X Cera Toner 150ml
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
We’re on gram!
Creators trying on authentic Korean skincare routines and products from us.
Rating a shelf of Dr. Althea products one by one.
Jasmine Loo · YouTube
Two hydrating serums side by side, IUNIK and Dr. Althea.
Kristin · YouTube
A walk through the Dr. Althea serum lineup and who each one suits.
auraofmahmuda · YouTube
A blunt first take on the Dr. Althea range.
Lexi Chang · YouTube
A first look at the viral 345 Relief Cream before buying.
Shelley Nayak · YouTube
A first try of the Dr. Althea serum on camera.
Hannah Ziad · YouTube
Bonajour, Korean-market original
Toner built on Ceramide AS, 150ml.
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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