Dr.Althea
Dr. Althea 345 Relief Cream$23.52Sensitive Hydro Soothing Gel 80ml
Coconut fruit juice and coconut water sit third and fourth in this 80 ml isoi gel, with Trehalose, Sodium Hyaluronate and Beta-Glucan behind them and a run of seaweed extracts, laminaria, salicornia, sargassum and gelidium. A light gel for reactive skin. Korean-market formula.
No reviews yet80 ml
$62.50 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- Sensitive skinDry skinNormal skin
- Helps with
- Skin that looks stressed, dry, or easily irritatedFitting a Korean-market step into an existing routineShoppers who want the same formula sold on shelves in Korea
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 Sensitive Hydro Soothing Gel is a 80ml product. The active it is built around is Allantoin, named thirty-third on its own ingredient list. The same list carries Beta-Glucan, Brassica Oleracea Italica (Broccoli) Sprout Extract and Laminaria Japonica Extract, so the active is not the only thing on it worth naming. How much of the Allantoin stays on the skin, and for how long, is decided by the product format rather than by the list alone. This is the Original Korean Formula, the product isoi sells in Korea, Allantoin and all.
Key benefits
- Allantoin, the active this product is built around
- Beta-Glucan on the same list, a polysaccharide
- Brassica Oleracea Italica (Broccoli) Sprout Extract, Laminaria Japonica Extract and Salicornia Herbacea Extract on the same list, plant extracts
- Sargassum Fulvellum Extract and Gelidium Cartilagineum Extract further down the same list
- Rosmarinus Officinalis (Rosemary) Extract and Centella Asiatica Extract further down the same list
- Allantoin named thirty-third on the manufacturer list printed on this page
How to use
- Apply as the last step of your routine, morning and night, smoothing over the face and neck until absorbed.
Is this the Korean-market product or a US version?
The Korean-market one, Allantoin and all. We match this product 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 Allantoin?
Beta-Glucan, Brassica Oleracea Italica (Broccoli) Sprout Extract and Laminaria Japonica Extract. The order they are printed in on this product's panel is the order on the box, so you can see where Allantoin sits relative to them. Further down the same panel: Salicornia Herbacea Extract, Sargassum Fulvellum Extract and Gelidium Cartilagineum Extract.
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 (37): Water, Glycerin, Cocos Nucifera (Coconut) Fruit Juice, Cocos Nucifera (Coconut) Water, Betaine, Trehalose, Sodium Hyaluronate, Beta-Glucan, Xanthan Gum, Brassica Oleracea Italica Sprout Extract, Laminaria Japonica Extract, Salicornia Herbacea Extract, Sargassum Fulvellum Extract, Gelidium Cartilagineum Extract, Rosmarinus Officinalis (Rosemary) Extract, Melaleuca Viridiflora Leaf Oil, Chamomilla Recutita Flower/Leaf Extract, Centella Asiatica Extract, Calendula Officinalis Flower Extract, Citrus Aurantium Bergamia (Bergamot) Fruit Oil, Lactobacillus/Soybean Ferment Extract, Salix Alba (Willow) Bark Extract, Cinnamomum Cassia Bark Extract, Origanum Vulgare Leaf Extract, Chamaecyparis Obtusa Leaf Extract, Scutellaria Baicalensis Root Extract, Portulaca Oleracea Extract, Acorus Calamus Root Extract, Glycine Soja (Soybean) Seed Extract, Sesamum Indicum (Sesame) Seed Extract, Camellia Sinensis Leaf Extract, Arginine, Allantoin, Panthenol, Carbomer, Paeonia Suffruticosa Root Extract, Glycyrrhiza Glabra (Licorice) Root Extract
Ingredient list read from inkeedecoder.com on 10 September 2026.
34 of 37 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- Brassica Oleracea Italica Sprout Extract plant extract
- Broccoli sprout extract. Sprouts carry far more sulforaphane than the mature head, which is why the sprout is declared separately.
- 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.
- Salicornia Herbacea Extract plant extract
- Glasswort, the hamcho that grows on Korean tidal flats. It concentrates sea minerals as it grows, so its extract is used as a mineral-rich hydrating ingredient.
- Sargassum Fulvellum Extract plant extract
- Mojaban, a Korean brown seaweed. Its extract carries alginates, minerals and polyphenols and is used as a hydrating marine ingredient.
- Gelidium Cartilagineum Extract plant extract
- A red seaweed extract from the genus agar is made from. It thickens and hydrates and leaves a cushioned film.
22 more explained
- Rosmarinus Officinalis (Rosemary) Extract plant extract
- Rosemary extract with the plant part unstated. Rosemary carries rosmarinic and carnosic acid, and it is also used to keep the oils in a formula from going rancid.
- Chamomilla Recutita Flower/Leaf Extract plant extract
- German chamomile, taken from flower and leaf together. It carries bisabolol and the blue azulenes and is used for the look of reactive, reddened skin.
- Centella Asiatica 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.
- Calendula Officinalis Flower Extract plant extract
- Marigold flower extract, one of the oldest plant ingredients used for the look of reddened, easily bothered skin. It carries carotenoids and flavonoids.
- Citrus Aurantium Bergamia (Bergamot) Fruit Oil fragrance component
- Bergamot Fruit Oil is a citrus essential oil and the top note of eau de cologne. It scents a formula; citrus oils are the aromatic class most likely to bother reactive skin.
- Lactobacillus/Soybean Ferment Extract ferment
- This is soybean fermented by lactobacillus. The fermentation breaks soy proteins into smaller pieces, which is what makes the extract easier for a formula to carry.
- Salix Alba (Willow) Bark Extract plant extract
- Willow Bark Extract carries salicin, the plant compound salicylic acid is related to. The two are not interchangeable: willow bark is a mild clarifying extract, not a BHA exfoliant at the levels used in cosmetics.
- Cinnamomum Cassia Bark Extract plant extract
- Cassia cinnamon bark extract, a traditional herbal ingredient carrying cinnamaldehyde and tannins. It is used in warming, antioxidant-rich blends.
- Origanum Vulgare Leaf Extract plant extract
- Oregano leaf extract, rich in the phenols carvacrol and thymol. It is used as an antioxidant plant extract and brings its own herbal scent with it.
- Chamaecyparis Obtusa Leaf Extract plant extract
- Chamaecyparis Obtusa is hinoki cypress. Its leaf extract carries aromatic plant compounds and is used in Korean formulas aimed at oily, congested skin.
- Scutellaria Baicalensis Root Extract plant extract
- Scutellaria Baicalensis is Chinese skullcap. Its root extract carries baicalin, a well studied plant antioxidant, and it is used for the look of redness.
- Portulaca Oleracea 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.
- Acorus Calamus Root Extract plant extract
- Sweet flag root extract, an aromatic wetland rhizome long used in Korean herbal practice. It is a conditioning plant extract.
- Glycine Soja (Soybean) Seed Extract plant extract
- Soybean Seed Extract carries isoflavones, plant sterols and soy proteins. It is used as a conditioning antioxidant extract.
- Sesamum Indicum (Sesame) Seed Extract plant extract
- Sesame seed extract. It carries sesamol and sterols and is used as a conditioning, antioxidant-rich extract.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809305083372
- Made in
- Republic of Korea
- Volume
- 80 ml
- Category
- Moisturizer
- Actives
- Allantoin, Beta-Glucan, Centella Asiatica, Green Tea, Licorice Root, Panthenol, Sodium Hyaluronate, Trehalose
- 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
Worth knowing
- Introduce any new product gradually rather than adding several new steps to a routine at once, so a reaction is easy to trace back to the right cause.
- Patch test on a small area first and wait a day before applying it to the full face, especially the first time you use it.
Complete the routine
- This itemisoi Sensitive Hydro Soothing Gel 80ml$50.00

- The treatment step of this routineisoi Bulgarian Rose Blemish Care Spot 25ml$45.00

- Seal the routine in as the last stepisoi Bulgarian Rose Intensive Treatment Lotion 90ml$95.00

Total for 3 items$190.00
Reviews
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isoi Sensitive Hydro Soothing Gel 80ml
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
isoi, Korean-market original
The Original Korean Formula product from isoi, 80ml formulated with Allantoin and Beta-Glucan, 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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