NatureLab Tokyo Kiseki Molecular Repair Leave-In Hair Masque
A hair mask with 41 ingredients, including AHA, PHA, and vitamin E.
Overview
What it is
Hair mask with 41 ingredients that contains AHA, PHA and Vitamin E
Cool Features
It is vegan, cruelty-free, and reef safe
Suited For
It has ingredients that are good for anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and better texture
Free From
It doesn't contain any parabens, silicones or sulfates
Fun facts
NatureLab Tokyo is from Japan.
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
Water
Skin ConditioningAlcohol
AntimicrobialCetearyl Alcohol
EmollientPropylene Glycol
HumectantDicaprylyl Ether
EmollientCetyl Esters
EmollientBehentrimonium Chloride
PreservativeNelumbo Nucifera Flower Extract
Skin ConditioningCamellia Sinensis Seed Oil
HumectantSilybum Marianum Seed Extract
Skin ConditioningTocopherol
AntioxidantHydrolyzed Pea Protein
EmollientHydrolyzed Rice Protein
Skin ConditioningHydrolyzed Soy Protein
HumectantHydroxypropylgluconamide
HumectantHydroxypropylammonium Gluconate
HumectantTartaric Acid
BufferingCaprylic/Capric Triglyceride
MaskingPolyquaternium-37
Pentylene Glycol
Skin ConditioningGluconolactone
Skin ConditioningStearamidopropyl Dimethylamine
EmulsifyingMaltodextrin
AbsorbentButylene Glycol
HumectantGamma-Docosalactone
Skin ConditioningParfum
MaskingPolysorbate 20
EmulsifyingIsopropyl Alcohol
SolventPhenoxyethanol
PreservativeBenzyl Alcohol
PerfumingSodium Benzoate
MaskingPotassium Sorbate
PreservativeTetrasodium EDTA
Hexamethylindanopyran
MaskingLinalyl Acetate
MaskingTetramethyl Acetyloctahydronaphthalenes
MaskingCitrus Aurantium Bergamia Peel Oil
Citrus Aurantium Peel Oil
Pinene
MaskingLinalool
PerfumingLimonene
PerfumingWater, Alcohol, Cetearyl Alcohol, Propylene Glycol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Nelumbo Nucifera Flower Extract, Camellia Sinensis Seed Oil, Silybum Marianum Seed Extract, Tocopherol, Hydrolyzed Pea Protein, Hydrolyzed Rice Protein, Hydrolyzed Soy Protein, Hydroxypropylgluconamide, Hydroxypropylammonium Gluconate, Tartaric Acid, Caprylic/Capric Triglyceride, Polyquaternium-37, Pentylene Glycol, Gluconolactone, Stearamidopropyl Dimethylamine, Maltodextrin, Butylene Glycol, Gamma-Docosalactone, Parfum, Polysorbate 20, Isopropyl Alcohol, Phenoxyethanol, Benzyl Alcohol, Sodium Benzoate, Potassium Sorbate, Tetrasodium EDTA, Hexamethylindanopyran, Linalyl Acetate, Tetramethyl Acetyloctahydronaphthalenes, Citrus Aurantium Bergamia Peel Oil, Citrus Aurantium Peel Oil, Pinene, Linalool, Limonene
Key Ingredients
Benefits
Concerns
Ingredients Explained
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. Stay hydrated!
Learn more about WaterAlcohol comes in many different forms. Different types of alcohol will have different effects on skin. This ingredient is usually an astringent alcohol.
These alcohols are drying on the skin. They may strip away your skin's natural oils and even damage your skin barrier. Astringent alcohols may also irritate skin.
Other types of astringent alcohols include:
According to the National Rosacea Society based in the US, you should be mindful of products with these alcohols in the top half of ingredients.
Any type of sanitizing product will have high amounts of alcohol to help kill bacteria and viruses.
Fatty alcohols come from plant oils such as coconut oil. These can help hydrate the skin and are non-irritating. Some fatty alcohols include cetyl and stearyl alcohol.
Learn more about AlcoholCetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.
Cetearyl alcohol is an emollient. Emollients help soothe and hydrate the skin by trapping moisture.
Studies show Cetearyl alcohol is non-toxic and non-irritating. The FDA allows products labeled "alcohol-free" to have fatty alcohols.
This ingredient is usually derived from plant oils such as palm, vegetable, or coconut oils. There is debate on whether this ingredient will cause acne.
Due to the fatty acid base, this ingredient may not be Malassezia folliculitis safe.
Learn more about Cetearyl AlcoholPropylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.
Another role of this ingredient is preventing a product from melting or freezing. Propylene glycol also adds antimicrobrial properties to a product, elongating product lifespan.
This ingredient is considered an organic alcohol and commonly added into both cosmetics and foods.
Those with sensitive skin or conditions may develop a rash when using this ingredient.
Learn more about Propylene GlycolDicaprylyl Ether is created from caprylic acid. It is a texture-enhancer and emollient.
As an emollient, Dicaprylyl Ether is non-comedogenic. It helps soften and smooth the skin by creating a barrier on top. This barrier helps trap moisture in, helping to hydrate the skin.
Dicaprylyl Ether gives a non-greasy feel and better spreadability to products.
Learn more about Dicaprylyl EtherCetyl Esters is a synthetic wax made up of mostly fatty acids and fatty alcohols. It is strcturally similar to wax taken from whales.
As an emollient, it creates a thin barrier on the skin. This barrier prevents moisture from escaping.
This ingredient may not be fungal-acne safe.
Learn more about Cetyl EstersThis ingredient is a preservative and often used for it's anti-static properties. You'll most likely see this ingredient in hair conditioners.
It does not cause irritation or sensitization in leave-on products at 1-5%.
Nelumbium Speciosum Flower Extract comes from the Lotus Flower. It is rich in antioxidants.
The antioxidant properties in lotus flower come from compounds such as flavonoids.
In traditional Asian medicine, Lotus flower seeds were used to help treat inflammation.
Learn more about Nelumbo Nucifera Flower ExtractCamellia Sinensis Seed Oil is the oil expressed from the seeds from the tea plant. This is the same plant we get green, black, and oolong tea from.
Camellia Sinensis Seed Oil is rich in oleic acid. This makes it an effective moisturizer. By drawing moisture to the skin, Camellia Oleifera Seed Oil helps keep your skin hydrated.
Other components of Camellia Sinensis Seed Oil includes Vitamin E and polyphenols. These are antioxidants that may help slow down the signs of aging. Antioxidants help fight free-radicals, or unstable molecules that can damage our skin cells.
Camellia Sinensis Seed Oil also has anti-inflammatory properties.
The seed oil comes from the dried kernels of the plant.
Learn more about Camellia Sinensis Seed OilWe don't have a description for Silybum Marianum Seed Extract yet.
Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.
Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.
Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.
You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.
There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.
Learn more about TocopherolWe don't have a description for Hydrolyzed Pea Protein yet.
Hydrolyzed Rice Protein is protein extracted from rice. This ingredient is rich in antioxidants and peptides.
Studies show this ingredient may help with blocking the melanin creation process when skin is exposed to UV.
Hydrolyzed Soy Protein is a vegan protein made to mimic hydrolyzed collagen. It is created from soy, or glycine soja.
This ingredient is a humectant, meaning it helps hydrate the skin by binding to water. According to a manufacturer, it is also a great hair conditioner.
Read more about hydrolyzed collagen here.
Learn more about Hydrolyzed Soy ProteinWe don't have a description for Hydroxypropylgluconamide yet.
We don't have a description for Hydroxypropylammonium Gluconate yet.
Tartaric acid is an AHA with exfoliating and antioxidant properties. It is found in many fruits, such as tamarind, grapes, bananas, and avocados.
AHAs provide chemical exfoliation, helping to improve skin tone and texture.
Tartaric acid is not as well studied as other AHAs, such as glycolic acid.
Learn more about Tartaric AcidThis ingredient is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.
It helps thicken a product's formula and makes it easier to spread by dissolving clumping compounds.
Caprylic Triglyceride is made by combining glycerin with coconut oil, forming a clear liquid.
While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this.
Learn more about Caprylic/Capric TriglycerideWe don't have a description for Polyquaternium-37 yet.
Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.
The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.
This property also makes Pentylene Glycol a great texture enhancer. It can also help thicken or stabilize a product.
Pentylene Glycol also acts as a mild preservative and helps to keep a product microbe-free.
Some people may experience mild eye and skin irritation from Pentylene Glycol. We always recommend speaking with a professional about using this ingredient in your routine.
Pentylene Glycol has a low molecular weight and is part of the 1,2-glycol family.
Learn more about Pentylene GlycolGluconolactone is a PHA. PHAs are a great gentle alternative to traditional AHAs.
When applied, Gluconolactone has the same affect on skin as AHAs such as lactic acid. It helps dissolve the dead skin cells in the top layer of your skin. This improves texture and brightens the skin.
PHAs are more gentle than AHAs due to their larger structure. They do not penetrate as deeply as AHAs and take a longer time to dissolve dead cells. Studies show PHAs do not cause as much irritation.
Gluconolactone has some interesting properties:
In a 2004 study, Gluconolactone was found to prevent UV damage in mouse skin cells and has not been found to increase sun sensitivity. However, we still recommend wearing SPF daily.
This ingredient is is an created by reacting gluconic acid with an alcohol.
Learn more about GluconolactoneWe don't have a description for Stearamidopropyl Dimethylamine yet.
Maltodextrin is a polysaccharide. It is derived from starch such as rice, corn, wheat, or potato starch.
In food, Maltodextrin is used to improve the texture and thicken a product. Due to its structure, it can help create a gel texture. As an emulsion stabilizer, it helps keep the ingredients in a product together.
As a polysaccharide, Maltodextrin has moisturizing properties. Polysaccharides are a type of carbohydrate. The top layer of skin uses polysaccharides to retain water, keeping the skin hydrated.
Maltodextrin is water soluble and has a sweet taste.
Learn more about MaltodextrinButylene 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 Gamma-Docosalactone yet.
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 ParfumPolysorbate 20 is made by combining ethoxylation of sorbitan, ethylene oxide, and lauric acid. It is a mild cleansing agent, surfactant, and emulsifier.
As a surfactant, it helps collect dirt and oils for washing. Emulsifiers prevent oils and water from separating.
Polysorbate 20 also adds scent to a product. Since it is made using sorbitol, it has a sweet scent. Sorbitol can also be found in fruits such as apples and peaches.
The lauric acid used to create Polysorbate 20 is often derived from coconuts.
Polysorbate 20 may not be fungal acne safe.
Learn more about Polysorbate 20Isopropyl Alcohol is more commonly known as rubbing alcohol. It is most commonly used as a solvent, meaning it helps other ingredients dissolve.
This ingredient is an astringent alcohol. Astringent alcohols may also irritate skin as they high amounts may strip away your skin's natural oils.
Other types of astringent alcohols include:
According to the National Rosacea Society based in the US, you should be mindful of products with these alcohols in the top half of ingredients.
Any type of sanitizing product will have high amounts of alcohol to help kill bacteria and viruses.
Learn more about Isopropyl AlcoholPhenoxyethanol 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.
Benzyl Alcohol is most commonly used as a preservative. It also has a subtle, sweet smell. Small amounts of Benzyl Alcohol is not irritating and safe to use in skincare products. Most Benzyl Alcohol is derived from fruits such as apricots.
Benzyl Alcohol has both antibacterial and antioxidant properties. These properties help lengthen the shelf life of products. Benzyl Alcohol is a solvent and helps dissolve other ingredients. It can also improve the texture and spreadability.
Alcohol comes in many different forms. Different types of alcohol will have different effects on skin. This ingredient is an astringent alcohol.
Using high concentrations of these alcohols are drying on the skin. They may strip away your skin's natural oils and even damage your skin barrier. Astringent alcohols may also irritate skin.
Other types of astringent alcohols include:
According to the National Rosacea Society based in the US, you should be mindful of products with these alcohols in the top half of ingredients.
Any type of sanitizing product will have high amounts of alcohol to help kill bacteria and viruses.
Learn more about Benzyl AlcoholSodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.
Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.
Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase.
It is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods.
Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps.
We always recommend speaking with a professional, such as a dermatologist, if you have any concerns.
Learn more about Sodium BenzoatePotassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.
This ingredient comes from potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.
Both potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.
You'll often find this ingredient used with other preservatives.
Learn more about Potassium SorbateTetrasodium EDTA is the salt formed from neutralizing ethylenediamine tetraacetic acid with sodium hydroxide. It is a chelating agent and used to prevent metal ions from binding to other ingredients. This helps keep the product and ingredients stable.
Tetrasodium EDTA comes as a white solid and is soluble in water.
This ingredient is also known as Galaxolide. It is a synthetic fragrance used to add a "sweet musky floral" odor.
The EU Scientific Committee for Consumer Safety deems this ingredient to be an allergen and irritant.
Linalyl Acetate is the acetate ester of linalool and can be naturally found in many flowers and spice plants.
This ingredient is often used to add a scent or mask an unpleasant one in products.
Linalyl acetate is mildly toxic to humans and toxic to fish.
Learn more about Linalyl AcetateThis ingredient is also known as ISO E Super. It is a synthetic perfuming and masking ingredient.
The manufacturer describes this scnet as amber and woody.
According to the EU, this ingredient is a known allergen and some people may develop skin sensitivity from repeated exposure.
Learn more about Tetramethyl AcetyloctahydronaphthalenesCitrus Aurantium Bergamia Peel Oil is the volatile oil obtained from the peel of the bergamot orange.
Citrus Aurantium Peel Oil is an oil.
Pinene is created by distilling the resin of Pinus trees.
It is a known EU allergen. Long term contact with this ingredient can cause dermatitis.
Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.
Like Limonene, this ingredient oxidizes when exposed to air. Oxidized linalool can cause allergies and skin sensitivity.
This ingredient has a scent that is floral, spicy tropical, and citrus-like.
Learn more about LinaloolLimonene is a fragrance that adds scent and taste to a formulation.
It's found in the peel oil of citrus fruits and other plants such as lavender and eucalyptus. The scent of limonene is generally described as "sweet citrus".
Limonene acts as an antioxidant, meaning it helps neutralize free radicals.
When exposed to air, oxidized limonene may sensitize the skin. Because of this, limonene is often avoided by people with sensitive skin.
The term '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.
Learn more about LimoneneReviews
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Where it's from
NatureLab Tokyo is a Japanese brand
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The data we've presented on this page has been verified by a member of the SkinSort Team.
Read more about us· Updated November 9, 2025 • Added by BlackCat808