Overview
What it is
Face cleanser with 13 ingredients
Cool Features
It is fungal acne (malassezia) safe and reef safe
Suited For
It has ingredients that are good for dry skin, sensitive skin and scar healing
Free From
It doesn't contain any harsh alcohols, common allergens, fragrances, oils, parabens, silicones or sulfates
Fun facts
Kosé is from Japan. This product is used in 5 routines created by our community.
We independently verify ingredients and our claims are backed by peer-reviewed research. Does this product need an update? Let us know.
What's inside
Ingredients List
Dipotassium Glycyrrhizate
Humectant
Water
Skin ConditioningButylene Glycol
Humectant
Tea-Cocoyl Glutamate
Cleansing
Lauryl Betaine
CleansingSodium C14-16 Olefin Sulfonate
Cleansing
Betaine
Humectant
Glycerin
Humectant
Poly(2-Methacryloyloxyethyl Phosphorylcholine-Co-N-Butyl Methacrylate)
Glutamic Acid
Humectant
Glycerylamidoethyl Methacrylate/Stearyl Methacrylate Copolymer
HumectantSodium Carbonate
BufferingPhenoxyethanol
Preservative
Dipotassium Glycyrrhizate, Water, Butylene Glycol, Tea-Cocoyl Glutamate, Lauryl Betaine, Sodium C14-16 Olefin Sulfonate, Betaine, Glycerin, Poly(2-Methacryloyloxyethyl Phosphorylcholine-Co-N-Butyl Methacrylate), Glutamic Acid, Glycerylamidoethyl Methacrylate/Stearyl Methacrylate Copolymer, Sodium Carbonate, Phenoxyethanol
Benefits
Concerns
Ingredients Explained
Dipotassium Glycyrrhizate comes from licorice root.
Extracts of licorice have demonstrated to have antibacterial, anti‐inflammatory, antiviral, antioxidant properties.
One component, glabridin, has extra potent antioxidant and soothing properties. It has also been found to block pigmentation from UVB rays in guinea pigs.
Licorice Root also contains a flavonoid. Flavonoids are a natural substance from in plants. Flavonoids also have antioxidant properties.
Another component, glycyrrhizin, has been found to have anti-inflammatory and antimicrobial benefits. This may make licorice root extract effective at treating acne. However, more research is needed to support this.
Liquiritin is one of the flavone compounds found in licorice. It has been found to help lighten skin by preventing tyrosinase from reacting with tyrosine. When the two react, protein is converted to melanin. Melanin is the substance in your body that gives your features pigmentation.
Licorice root is native to Southern Europe and Asia. It has been used in traditional Chinese medicine to help with respiratory issues.
Learn more about Dipotassium GlycyrrhizateWater. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated!
Learn more about WaterButylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Learn more about Butylene GlycolWe don't have a description for Tea-Cocoyl Glutamate yet.
Lauryl Betaine is a cleansing ingredient. You'll most likely see it in face washes, body washes, and shampoos. It's a type of surfactant that helps water mix with oil so dirt, sweat, and sunscreen can rinse off easily.
Chemically, lauryl betaine is an amphoteric surfactant so it carries both a positive and negative charge. This helps it create a creamy foam while being less harsh than stronger detergent-type cleansers.
According to CIR, this ingredient is generally considered safe when used in cosmetics. However, like all surfactants, it can be irritating when used in high amounts of in formulas that aren't well balanced.
Learn more about Lauryl BetaineSodium C14-16 Olefin Sulfonate is a surfactant that helps water and oil mix so that dirt, sweat, sebum, and sunscreen can rinse away easily. It's not technically a sulfate, but behaves similarly in formulas.
What it does:
Sodium C14-16 Olefin Sulfonate is a strong cleansing surfactant and is much stronger than many mild cleansers. Because it works deeply, it can disrupt the skin's barrier. This can lead to dryness or irritation for those with sensitive skin.
Compared to gentler surfactants, it's effective but more likely to dry or irritate if not balanced with soothing ingredients.
CIR considers sodium α-olefin sulfonates (including C14-16) to be safe for use in rinse-off products when properly formulated. It is poorly absorbed through normal skin but absorption increases if the skin barrier is already damaged.
Learn more about Sodium C14-16 Olefin SulfonateBetaine is a humectant. Like hyaluronic acid, it helps attract and retain moisture in the skin. It’s known for being gentle and for helping the skin maintain balanced hydration.
Betaine is mainly used to improve hydration and support calmer skin. It helps skin cells regulate water balance because it functions as an osmolyte.
Some studies suggest betaine may support making skin tone more even.
Fun fact: Betaine naturally exists in the skin and the body. In cosmetic products, it can be either plant-derived (most commonly from sugar beets) or synthetically produced for consistency and stability.
Betaine is also known as trimethylglycine.
Learn more about BetaineGlycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
Topically, glycerin does several things at once:
Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.
Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.
This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.
Just know very high concentrations (>40%) can feel tacky in low humidity.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinWe don't have a description for Poly(2-Methacryloyloxyethyl Phosphorylcholine-Co-N-Butyl Methacrylate) yet.
Glutamic Acid is an amino acid that is found in all living organisms. Our bodies use this to help nerve cells in the brain communicate with other cells.
In cosmetics, glutamic acid is a famous humectant. It draws water from the air to your skin, keeping your skin hydrated (like hyaluronic acid).
An in-vitro study from 2024 found glutamic acid to play a role in inhibiting inflammation and thus a potential skin-soothing ingredient.
Other studies show it to be have potential wound healing, skin barrier repair, and hair growth properties.
Glutamic acid has poor solubility in water and other solvents.
Learn more about Glutamic AcidWe don't have a description for Glycerylamidoethyl Methacrylate/Stearyl Methacrylate Copolymer yet.
We don't have a description for Sodium Carbonate yet.
Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
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Where it's from
Kosé is a Japanese brand
Often compared with
We're dedicated to providing you with the most up-to-date and science-backed ingredient info out there.
The data we've presented on this page has been verified by a member of the SkinSort Team.
Read more about us· Updated November 5, 2025 • Added by Btinana
