Leave-in Treatment
Leave-in Treatment
Japanese Japan
Japanese Japan

What's inside

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Show highlights for:

Water

Skin Conditioning

Dimethicone

Emollient
1 / 0 Silicon IconGood for Scar Healing Icon

Cyclopentasiloxane

Emollient
Silicon Icon

Ethylhexyl Palmitate

Emollient
2-3 / 0 Bad for Acne Prone Skin IconMay worsen Oily Skin IconNot safe for Fungal Acne Icon

Dodecane

Emollient
Fragrance Icon

Ammonium Propionate

Preservative
Preservative Icon

Sodium Tosyl Valinate

Skin Conditioning

Hydrolyzed Keratin

Humectant
Helps hydrate Dry Skin Icon

Hydrolyzed Collagen

Emollient
Helps with Anti-Aging IconHelps hydrate Dry Skin Icon

Hydrolyzed Hyaluronic Acid

Humectant
Hyaluronic Acid IconHelps with Anti-Aging IconHelps hydrate Dry Skin IconGood for Scar Healing Icon

Ceramide NP

Skin Conditioning
Ceramide IconHelps with Anti-Aging IconHelps hydrate Dry Skin IconHelps reduce irritation IconHelps reduce Skin Redness IconGood for Barrier Repair Icon

Ceramide AP

Skin Conditioning
Ceramide IconHelps with Anti-Aging IconHelps hydrate Dry Skin IconHelps reduce irritation IconHelps reduce Skin Redness IconGood for Barrier Repair Icon

Polyquaternium-64

Polyquaternium-61

Skin Conditioning

Hydroxypropyltrimonium Hyaluronate

Gamma-Docosalactone

Skin Conditioning

Meadowfoam Delta-Lactone

Skin Conditioning

Lactic Acid

Buffering
AHA IconHelps with Anti-Aging IconHelps brighten skin IconGood for Oily Skin IconGood for Minimizing Pores IconGood for Scar Healing IconGood for Dark Spots IconGood for Skin Texture IconMay worsen Eczema IconMay worsen Rosacea Icon

Dihydroxymethylsilylpropoxy Hydroxypropyl Hydrolyzed Casein

Skin Conditioning

Hydrolyzed Silk

Humectant
Helps hydrate Dry Skin Icon

Isostearoyl Hydrolyzed Keratin

Cleansing

Arginine

Masking
Helps hydrate Dry Skin IconGood for Scar Healing Icon

Pyrrolidinyl Diaminopyrimidine Oxide

Acetyl Tetrapeptide-3

Skin Protecting
Peptide Icon

Cystine

Masking

Azelaic Acid

Buffering
Azelaic Acid IconHelps fight Acne IconHelps brighten skin IconHelps reduce irritation IconGood for Oily Skin IconGood for Minimizing Pores IconHelps reduce Skin Redness IconGood for Scar Healing IconGood for Dark Spots IconGood for Skin Texture Icon

Soluble Proteoglycan

Skin Conditioning

Sodium Acetylated Hyaluronate

Humectant
Hyaluronic Acid IconHelps with Anti-Aging Icon

Sodium Hyaluronate Crosspolymer-2

Humectant

Phytosphingosine

Skin Conditioning
Helps with Anti-Aging IconHelps hydrate Dry Skin IconHelps reduce irritation IconHelps reduce Skin Redness IconGood for Barrier Repair Icon

Propylene Glycol

Humectant
0 / 0 Helps hydrate Dry Skin IconMay worsen Eczema IconMay worsen Rosacea Icon

Panthenol

Skin Conditioning
0 / 0 Helps hydrate Dry Skin IconHelps reduce irritation IconHelps reduce Skin Redness IconGood for Scar Healing IconGood for Barrier Repair Icon

Polyglutamic Acid

Skin Conditioning
Helps hydrate Dry Skin IconHelps reduce Skin Redness IconGood for Scar Healing IconGood for Barrier Repair Icon

Sodium Glutamate

Masking

Xanthan Gum

Emulsifying

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconGood for Scar Healing IconGood for Barrier Repair Icon

Propanediol

Solvent
Helps hydrate Dry Skin IconGood for Barrier Repair Icon

Caprylic/Capric Triglyceride

Masking
Coconut Derived IconHelps hydrate Dry Skin IconGood for Barrier Repair Icon

Isononyl Isononanoate

Emollient

Isohexadecane

Emollient

Polyquaternium-47

Skin Conditioning

Dextran

Helps hydrate Dry Skin Icon

PCA Ethyl Cocoyl Arginate

Moisturising
Coconut Derived Icon

Ethylhexylglycerin

Skin Conditioning

Cholesterol

Emollient
0 / 0 Helps hydrate Dry Skin IconGood for Barrier Repair Icon

Chitosan

Pvp

Emulsion Stabilising
0 / 0

Aminopropyl Dimethicone

Silicon Icon

Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Emulsion Stabilising

Hydroxyethylcellulose

Emulsion Stabilising

PEG-20 Sorbitan Cocoate

Emulsifying
Coconut Derived IconCan worsen Dry Skin Icon

Oleth-20

Cleansing
0 / 0

Polysorbate 80

Emulsifying
0 / 0 Not safe for Fungal Acne Icon

Sorbitan Oleate

Emulsifying
3 / 0 Bad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Sodium Lauroyl Lactylate

Emulsifying

Cetearyl Glucoside

Emulsifying
Not safe for Fungal Acne Icon

Carbomer

Emulsion Stabilising
1 / 0

Algin

Masking
Bad for Acne Prone Skin Icon

Caprylhydroxamic Acid

Tocopherol

Antioxidant
0-3 / 0-3 Vitamin E IconAntioxidant IconHelps with Anti-Aging IconHelps hydrate Dry Skin IconHelps brighten skin IconHelps reduce Skin Redness IconGood for Dark Spots IconGood for Barrier Repair Icon

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin IconGood for Barrier Repair Icon

Sodium Benzoate

Masking
Preservative Icon

Phenoxyethanol

Preservative
Preservative Icon

Parfum

Masking
Synthetic Fragrance IconFragrance IconMay worsen Eczema IconMay worsen Rosacea Icon

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Masking, Skin Conditioning

Arginine is a semi-essential amino acid. This just means our bodies can product a bit on its own, but sometimes needs a little boost from food sources.

It is a part of your skin's natural moisturizing factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy.

Here's an interesting thing about Arginine: your skin converts it into urea through the Krebs-Henseleit urea cycle. Urea is one of the most effective humectants your skin naturally produces.

A clinical study showed applying 2.5% arginine hydrochloride to atopic dermatitis skin showed significant urea levels in the stratum corneum and improved moisture in just four weeks.

Arginine is also a precursor to nitric oxide; nitric oxide improves microcirculation and supports wound healing and collagen synthesis.

One study found that an amino acid complex containing Arginine reduced skin irritation, improved hydration, and accelerated skin repair in clinical / in-vivo studies.

Arginine itself is an amino acid and not a fatty acid, oil, or ester. On its own, it's not a direct food source for Malassezia, or the yeast that causes fungal acne.

Learn more about Arginine
Humectant, Masking, Skin Conditioning

Butylene 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 Glycol
Skin Conditioning

Ceramide AP is is a skin-identical lipid that mimics what your skin already makes naturally. Ceramides help maintain epidermal integrity and barrier function.

You'll often see this ingredient paired with other ceramides (like ceramide NP), cholesterol, or fatty acids because this combination best mimics the natural lipid mix your skin already has.

The skin's ability to produce ceramides gets disrupted in skin conditions like eczema. This in turn weakens the skin barrier and applying ceramides topically has been shown to replenish what's been lost to restore barrier function.

Most of the studies with Ceramide AP test it as part of a multi-ceramide complex; studies reinforce ceramide AP's role in rebalancing ceramides in skin and improving skin hydration.

Learn more about Ceramide AP
Skin Conditioning

Ceramide NP (formerly known as Ceramide 3) is one of the skin's naturally occurring lipids.

Since ceramides are the major lipid components of the skin, they are crucial for maintaining skin barrier and hydration. Ceramide NP most closely mirrors the dominant kind in human skin amongst ceramide subtypes.

This ceramide works by slotting into gaps within the stratum corneum's lipid matrix to limit trans-epidermal water loss (TEWL) and shield the skin against external irritants.

A study with 312 patients found that using a ceramide-containing routine for 4 weeks reduced the severity of atopic dermatitis by over 61%.

Another clinical study in subjects aged 60 and older found that a ceramide body wash and moisturizer improved skin dryness and itchy skin in 15 days.

Overall, ceramides are considered non-irritating and safety tests have found little to no observable adverse effects from using this ingredient.

Ceramide NP is usually sourced from plants (like soybean or rice bran), or produced synthetically.

Learn more about Ceramide NP
Emollient, Skin Conditioning, Solvent

Cyclopentasiloxane, or D5, is a silicone used to improve texture of products and trap moisture.

D5 is considered lightweight and volatile. Volatile means it evaporates quickly after application. Once evaporated, D5 leaves a thin barrier that helps keep skin hydrated.

It is also an emollient. Emollients help soften the skin and prevent water loss. Silicones create a silky texture in products. D5 helps other ingredients become more spreadable.

Studies show D5 is safe to use in skincare products. We recommend speaking with a skincare professional if you have concerns.

Learn more about Cyclopentasiloxane
Emollient, Skin Conditioning, Skin Protecting

Dimethicone is a type of synthetic silicone created from natural materials such as quartz. It is also known as polydimethylsiloxane.

What it does:

Dimethicone comes in different viscosities:

Depending on the viscosity, dimethicone has different properties.

Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.

This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.

Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.

Learn more about Dimethicone
Skin Conditioning

We don't have a description for Gamma-Docosalactone yet.

Humectant, Skin Conditioning, Skin Protecting

Glycerin (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 Glycerin
Humectant, Skin Conditioning

You can find hydrolyzed silk in both haircare and skincare products. According to a manufacturer, it can help improve skin and hair hydration.

This ingredient is created by adding acid or enzymes to 'hydrolyze' silk protein.

Due to the origins of this ingredient, it is not vegan. Silk is an animal product from silkworms.

Depending on the source, this ingredient can be considered cruelty-free. It is created from left-over cocoons of silkworms. We recommend reaching out to the brand if you have questions about where their hydrolyzed silk comes from.

Learn more about Hydrolyzed Silk
Emulsion Stabilising, Stabilising

Hydroxyethylcellulose is used to improve the texture of products. It is created from a chemical reaction involving ethylene oxide and alkali-cellulose. Cellulose is a sugar found in plant cell walls and help give plants structure.

This ingredient helps stabilize products by preventing ingredients from separating. It can also help thicken the texture of a product.

This ingredient can also be found in pill medicines to help our bodies digest other ingredients.

Learn more about Hydroxyethylcellulose
Masking, Perfuming

Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.

Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.

For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.

The term 'parfum' or 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term.

For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance by INCI standards.

One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.

Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.

Parfum can also be used to mask or cover an unpleasant scent.

The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.

Learn more about Parfum
Preservative

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.

Skin Conditioning, Solvent

Water. 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 Water

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