Rich Moist Soothing Serum 80ml
Rich Moist Soothing Serum is a serum from KLAIRS. It suits normal, combination, dry and oily skin. Comes in a 80ml size.
No reviews yet80 ml
$40.63 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- NormalCombinationDryOily
- Helps with
- A targeted treatment stepLayering under a daily moisturizer
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
Rich Moist Soothing Serum 80ml is KLAIRS's serum, a serum, layered after toner and before moisturizer. Its own ingredient list carries Sodium Hyaluronate at entry 2 of 36; Centella Asiatica Extract at entry 10 of 36; Sodium Ascorbyl Phosphate at entry 17 of 36; Citrus Paradisi (Grapefruit) Fruit Extract at entry 23 of 36, which is what the key-actives panel below is built from rather than the product name alone. A serum's thinner, faster-absorbing texture is built to sit under a heavier cream rather than replace one. Placement in the routine matters as much as any single ingredient, so this step is built to layer cleanly with what comes before and after it. Patch-test on the inner arm before a first full-face use, as with any new skincare step, and stop if irritation appears.
Key benefits
- Sodium Hyaluronate on the ingredient list at entry 2 of 36
- Centella Asiatica Extract on the ingredient list at entry 10 of 36
- Sodium Ascorbyl Phosphate on the ingredient list at entry 17 of 36
- Sized at 80 ml for the way this step is actually used in a routine
- Sourced for the Korean market and sold as the same formula, not a US-shelf reformulation
Key actives
2Sodium Hyaluronate
Sodium Hyaluronate is the salt form of hyaluronic acid, the form most Korean formulas use for its ability to bind water at more than one molecular weight.
10Centella Asiatica Extract
Centella Asiatica Extract is the calming botanical Korean skincare built an entire ingredient category around, and it is confirmed here on this row's own list rather than inferred from the brand's centella-forward branding.
17Sodium Ascorbyl Phosphate
Sodium Ascorbyl Phosphate is a stabilized, phosphate-bound brightening derivative, a common choice in Korean formulas built for daily use rather than a short, intensive course.
23Citrus Paradisi (Grapefruit) Fruit Extract
Citrus Paradisi (Grapefruit) Fruit Extract (grapefruit) gives this formula its citrus character and is a common choice in Korean toners aimed at a brighter, refreshed feel.
All products with Citrus Paradisi (Grapefruit) Fruit Extract
27Panthenol
Panthenol, provitamin B5, is a humectant and soothing agent Korean formulas lean on to keep the rest of a formula feeling comfortable rather than tight once it sets.
What is Rich Moist Soothing Serum?
It is a serum from KLAIRS (80ml).
How do I use this serum?
Apply a few drops to clean skin after toner or essence and before moisturizer, morning and/or night, pressing it in rather than rubbing.
Can I use this with other serums?
Yes, layering thinnest to thickest texture is the usual rule; introduce one new serum at a time so you can tell what your skin is responding to.
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 (36): Water, Sodium Hyaluronate, Butylene Glycol, Dimethyl Sulfone, Betaine, Natto Gum, Propanediol, Polyquaternium-51, Disodium EDTA, Centella Asiatica Extract, Glycyrrhiza Glabra (Licorice) Root Extract, Carbomer, Arginine, PEG-60 Hydrogenated Castor Oil, Lysine HCL, Proline, Sodium Ascorbyl Phosphate, Acetyl Methionine, Theanine, Chlorphenesin, Tocopheryl Acetate, Illicium Verum (Anise) Fruit Extract, Citrus Paradisi (Grapefruit) Fruit Extract, Nelumbium Speciosum Flower Extract, Paeonia Suffruticosa Root Extract, Scutellaria Baicalensis Root Extract, Panthenol, Luffa Cylindrica Fruit/Leaf/Stem Extract, Beta-Glucan, Althaea Rosea Flower Extract, Aloe Barbadensis Leaf Extract, Lavandula Angustifolia (Lavender) Oil, Eucalyptus Globulus Leaf Oil, Pelargonium Graveolens Flower Oil, Citrus Limon (Lemon) Peel Oil, Citrus Aurantium Dulcis (Orange) Peel Oil
Ingredient list read from jolse.com on 10 September 2026.
36 of 36 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.
- 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.
- 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.
- Dimethyl Sulfone solvent
- Dimethyl Sulfone is MSM, an organic sulfur compound that dissolves in water. It is used as a conditioning ingredient and as a carrier for other actives.
- 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.
- Natto Gum humectant
- Polyglutamic Acid comes from fermented soy and holds several times more water than hyaluronic acid for its weight. It forms a light film on the surface, so it is often layered with hyaluronic rather than replacing it.
- Propanediol humectant
- Propanediol is a plant-derived glycol used in place of propylene glycol. It hydrates, carries actives into solution, and gives a lighter, less sticky slip than glycerin at the same strength.
- Polyquaternium-51 film former
- Polyquaternium-51 is a polymer, sometimes sold as Lipidure, built on the same phosphorylcholine structure as a cell membrane. It holds water in a film on the surface and gives a distinctive soft, dry finish.
- Disodium EDTA chelator
- EDTA is a chelator: it locks up trace metal ions from water and packaging that would otherwise turn a formula cloudy, off-colour or rancid. It does nothing to skin and appears at a fraction of a percent.
- 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.
- 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.
- 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.
24 more explained
- 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.
- PEG-60 Hydrogenated Castor Oil emulsifier
- PEG-60 Hydrogenated Castor Oil is a castor-oil-derived solubiliser. It is what keeps fragrance and oil-soluble ingredients dissolved in a watery formula so it stays clear.
- Lysine HCL amino acid
- Lysine is an essential amino acid, here as its hydrochloride salt for solubility. Amino acids on a label hold water and condition the surface.
- Proline amino acid
- Proline is an amino acid abundant in collagen and one of skin's own humectants. Added to a formula it holds water in the outer layer.
- Sodium Ascorbyl Phosphate antioxidant
- Sodium Ascorbyl Phosphate is a water-soluble, stable vitamin C salt. It works at near-neutral pH, so it appears in formulas aimed at skin that pure ascorbic acid leaves stinging.
- Acetyl Methionine amino acid
- The amino acid methionine with an acetyl group attached, which makes it more stable in a formula. Methionine is one of the sulphur carrying amino acids.
- Theanine amino acid
- Theanine is the amino acid that gives green tea its savoury character, and it is the most abundant free amino acid in the tea leaf. In a formula it is a water holding amino acid.
- Chlorphenesin preservative
- A preservative effective against bacteria, yeast and mould across a wide pH range, which is why it appears where a single milder preservative cannot cover the formula.
- Tocopheryl Acetate antioxidant
- Tocopheryl Acetate is a stable vitamin E ester that skin converts to tocopherol. It is used as an antioxidant and a light emollient and holds up better than plain vitamin E in a formula.
- 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.
- Citrus Paradisi (Grapefruit) Fruit Extract plant extract
- Grapefruit fruit extract, carrying fruit acids, sugars and flavonoids. It is used as a conditioning, antioxidant-rich extract.
- Nelumbium Speciosum Flower Extract plant extract
- Lotus flower extract, from the same sacred lotus as the leaf. It carries flavonoids and sugars and is used as a conditioning, hydrating extract.
- 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.
- 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.
- 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.
- Luffa Cylindrica Fruit/Leaf/Stem Extract plant extract
- An extract taken from the whole luffa plant rather than the fruit alone. It carries the mucilage of the fruit along with the flavonoids of the leaf and stem.
- 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.
- Althaea Rosea Flower Extract plant extract
- Althaea Rosea is hollyhock, a mallow relative rich in mucilage. Its flower extract hydrates and leaves a cushioned, slippery feel.
- Aloe Barbadensis Leaf Extract plant extract
- Aloe Leaf Extract is mostly water with polysaccharides, amino acids and mild plant acids. It hydrates and leaves a light, cooling film, which is why it is the default after-sun ingredient.
- 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.
- Eucalyptus Globulus Leaf Oil fragrance component
- Eucalyptus Leaf Oil is an essential oil carrying eucalyptol. It scents a formula sharply and gives a cooling sensation.
- Pelargonium Graveolens Flower Oil fragrance component
- Pelargonium Graveolens is rose geranium. Its flower oil is an essential oil used to scent a formula, carrying citronellol and geraniol.
- Citrus Limon (Lemon) Peel Oil fragrance
- Cold-pressed lemon peel oil. Citrus peel oils carry limonene and can make skin more sensitive to sunlight, which is why leave-on formulas use them sparingly.
- 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.
- Market
- Korean market, the version sold in Korea
- Made in
- Republic of Korea
- Volume
- 80 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.
Inside the formula
Inside the formula
- 2Sodium Hyaluronate
- 10Centella Asiatica
- 17Sodium Ascorbyl
- 23Citrus Paradisi
- 27Panthenol
Where each key active sits on the declared ingredient list, by entry number. Position is proportion: the further forward, the larger its share.
How to use
- Apply a few drops to clean skin after toner or essence and before moisturizer, morning and/or night, pressing it in rather than rubbing.
Worth knowing
- Introduce a new serum on its own for a week before adding other treatment steps.
Complete the routine
- This itemKLAIRS Rich Moist Soothing Serum 80ml$32.50

- Seal the routine in as the last stepKlairs Rich Moist Soothing Cream 80ml$42.50

- Prep after cleansing, before the treatment stepKLAIRS Supple Preparation Facial Toner 180ml$32.50

Total for 3 items$107.50
Reviews
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KLAIRS Rich Moist Soothing Serum 80ml
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
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KLAIRS, Korean-market original
Serum, 80 ml, with Sodium Hyaluronate and Centella Asiatica Extract.
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 the key actives in this formula, quoted from the medical sources linked beside each.
Hyaluronic acid helps bind water to collagen, which traps water in the skin. That helps make the skin more plump and full-looking.
Samantha Stein, PA-CDermatology physician assistant, Cleveland Clinic Using topical vitamin C can result in less cell damage and better-looking skin.
Melissa Piliang, MDDermatologist, Cleveland Clinic
1 more professional perspective
Pantothenol is a common ingredient in skin care and hair products I recommend, particularly for people who are prone to dryness.
Taylor Bullock, MDDermatology resident, Cleveland Clinic
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