Beauty ingredient research

Beauty ingredients explained in plain English

Browse the review database to understand what an ingredient is, what it does in a beauty formula, when it is useful, and when it deserves caution across skincare, haircare, bodycare, makeup, and more.

20769

Reviewed ingredients

524

Low-concern standouts

2884

Need usage caution

Showing 60 of 20,769
AllUV absorberUV filterabrasiveabsorbentacne treatmentactiveactive ingredientadhesivealkalizing agentamino acidanti-aginganti-androgenanti-cavityanti-cavity agentanti-inflammatoryanti-irritantanticariesanticavity agentantidandruffantifungalantimicrobialantioxidantantiperspirantantiplaqueastringentbarrier repairbarrier supportbarrier-repairbarrier-supportbinderbinding agentbiotechbiotechnologybond-builderbotanicalbotanical extractbotanical oilbotanical waterbrighteningbrightening agentbufferbuffering agentcell-communicating ingredientceramidechelating agentchemicalchemical intermediateclaycleansercleansingcleansing agentcolorantconditionerconditioningconditioning agentcooling agentcosmeticcosmetic additivecosmetic colorantcosmetic ingredientcosmetic pigmentcosmetic powdercosmetic-texturizercosmetic-waxcosmeticscrosslinking agentdelivery agentdelivery systemdenaturantdeodorantdeodorant agentdepigmenting agentdepilatorydepilatory agentdesensitizing agentdyedye intermediatedye precursordye-intermediateemollientemulsifierenzymeessential oilexfoliantexperimentaleyelashfermentfilm formerfilm-formerfilm-formingfilm-forming agentfirming agentfixativeflavoring agentformulationfragrancefragrance ingredientfunctional ingredientgashair carehair colorhair coloranthair conditionerhair dyehair removalhair-carehair-colorhaircarehumectantindustrialinsecticideintermediatelashlash carelash enhancerlash-and-browlip carelipidmakeupmarine extractmasking agentmicrobiomemicrobiome modulatormineralmoisturizernail carenail-careocclusiveoilopacifieropacifying agentoptical agentoral careotheroxidative dyeoxidative dye precursoroxidizing agentpH adjusterpain reliefpenetration enhancerpeptidepersonal careph adjusterpharmaceuticalpheromonepigmentplant oilplasticizerpolymerpolymer precursorprebioticprescription-drugpreservativepreservative boosterprobioticprocessing agentprocessing aidpropellantproteinpurifyingreducing agentretinoidscalp caresebum regulatorsebum-regulatorself-tannerself-tanningsensory additivesensory agentsensory modifiersiliconeskin barrierskin barrier supportskin conditionerskin conditioningskin conditioning agentskin lighteningskin protectantskin-conditioningskin-conditioning agentskin-identicalskin-identical ingredientskin-lighteningskin-lightening agentskincaresolventsoothingsoothing agentstabilizerstimulantsunscreensurfactantsyntheticsynthetic colorantsynthetic dyesynthetic resinsynthetic-coloranttexture enhancertexturizerthickenertoneruv-absorberuv-filtervasoactivevasodilatorviscosity controlviscosity controllingviscosity controlling agentvitaminwax

Antioxidant

Japanese Cedar Stem Powder

Cryptomeria japonica stem powder

3.5

A gentle botanical powder from Japanese cedar stems that may offer antioxidant benefits, but research is limited and it's best used in rinse-off products.

Irritation

low

Source

natural

beautyskincarebotanical
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Antioxidant

Japanese Cherry Blossom Extract

Prunus Serrulata Flower Extract

4.0

A gentle, antioxidant-rich botanical extract that may help calm skin and defend against environmental stress, though human studies are limited.

Irritation

low

Source

natural

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Antioxidant

Japanese Chestnut Extract

Castanea Crenata Pellicle Extract

4.0

A gentle, plant-based antioxidant that may help calm skin and defend against environmental stress, though research is still early.

Irritation

low

Source

natural

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Antioxidant

Japanese Chloranthus Extract

CHLORANTHUS JAPONICUS EXTRACT

3.8

A gentle plant extract with antioxidant potential, but research is still early and benefits are not yet proven in human studies.

Irritation

low

Source

natural

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Antioxidant

Japanese Cinnamon Bark Extract

Cinnamomum Japonicum Bark Extract

3.8

A gentle botanical extract with antioxidant potential, but limited human studies and a moderate risk of skin irritation for sensitive individuals.

Irritation

moderate

Source

natural

beautyskincarebotanical extract
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Fragrance

Japanese Cinnamon Leaf Oil

Cinnamomum Japonicum Leaf Oil

3.5

A fragrant essential oil with some antimicrobial potential, but its strong aroma and risk of skin irritation limit its use in everyday skincare.

Irritation

moderate

Source

natural

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Antioxidant

Japanese Citrus Fruit Extract

Citrus Japonica Fruit Extract

4.0

A gentle, antioxidant-rich fruit extract that may help calm skin and protect against environmental stress, though research is still emerging.

Irritation

low

Source

natural

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Antioxidant

Japanese Elder Leaf/Stem Extract

Sambucus Sieboldiana Leaf/Stem Extract

3.8

A gentle botanical extract with antioxidant potential, but research is limited compared to more studied plant extracts.

Irritation

low

Source

natural

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Antioxidant

Japanese Ginseng Root Extract

Panax Japonicus Root Extract

3.8

A gentle botanical extract with antioxidant potential, but research on its cosmetic benefits is still limited compared to more studied ginseng varieties.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing Agent

Japanese Grape Root Powder

Ampelopsis Japonica Root Powder

3.8

A gentle botanical powder with traditional use for soothing skin, but modern research is still limited.

Irritation

low

Source

natural

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Antioxidant

Japanese Hogfennel Extract

Peucedanum Japonicum Leaf/Stem Extract

3.8

A gentle botanical extract with antioxidant potential, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Japanese Hogfennel Root Extract

PEUCEDANUM JAPONICUM ROOT EXTRACT

3.8

A gentle botanical root extract with antioxidant and soothing potential, but human skin research is still limited.

Irritation

low

Source

natural

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Antioxidant

Japanese Holly Extract

Ilex Crenata Extract

3.8

A gentle botanical extract with antioxidant and soothing potential, but human studies are limited.

Irritation

low

Source

natural

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Antioxidant

Japanese Honeysuckle Extract

LONICERA JAPONICA FLOWER EXTRACT

4.0

A gentle, antioxidant-rich botanical extract that helps calm irritation and protect skin from environmental stress.

Irritation

low

Source

natural

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Antioxidant

Japanese Hop Extract

HUMULUS JAPONICUS FLOWER/LEAF/STEM EXTRACT

3.8

A gentle, plant-derived antioxidant that may help calm skin and fight free radical damage, though research on topical use is still limited.

Irritation

low

Source

natural

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Soothing Agent

Japanese Lily Extract

Lilium Japonicum Extract

3.8

A gentle botanical extract that may help calm skin and provide antioxidant support, though research is still emerging.

Irritation

low

Source

natural

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Antioxidant

Japanese Machilus Extract

Machilus Japonica Branch/Leaf Extract

3.8

A gentle, antioxidant-rich plant extract that may help protect skin from environmental stress, though research is still early.

Irritation

low

Source

natural

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Antioxidant

Japanese Maple Leaf Extract

Acer Palmatum Leaf Extract

4.0

A gentle, antioxidant-rich plant extract that helps calm skin and defend against environmental stress, ideal for sensitive or reactive skin types.

Irritation

low

Source

natural

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Soothing agent

Japanese Mugwort Extract

Artemisia Japonica Extract

4.0

A gentle botanical extract that helps calm irritated skin and provides antioxidant protection, but research is still emerging.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing agent

Japanese Onychium Extract

Onychium Japonicum Extract

3.8

A gentle fern extract with antioxidant potential, but research on its specific skin benefits is still limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Japanese Pepper Extract

ZANTHOXYLUM PIPERITUM BRANCH/LEAF EXTRACT

3.8

A gentle plant extract with antioxidant and soothing potential, but research is still early and benefits are not yet proven in large human studies.

Irritation

low

Source

natural

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Antioxidant

Japanese Persea Branch Extract

Persea Japonica Branch Extract

3.8

A gentle botanical extract with antioxidant potential, but research is limited and benefits are not yet well-established in human skin.

Irritation

low

Source

natural

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Antioxidant

Japanese Privet Fruit Extract

Ligustrum Japonicum Fruit Extract

3.8

A gentle, plant-derived antioxidant that may help protect skin from environmental stress, though research on its cosmetic benefits is still emerging.

Irritation

low

Source

natural

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Antioxidant

Japanese Privet Wood Extract

Ligustrum Japonicum Wood Extract

3.8

A gentle plant extract with antioxidant potential, but research is limited and it's not a standout ingredient.

Irritation

low

Source

natural

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Antioxidant

Japanese Quince Seed Extract

Chaenomeles Japonica Seed Extract

4.0

A gentle, antioxidant-rich plant extract that may help calm skin and protect against environmental stress, though research is still early.

Irritation

low

Source

natural

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Emollient

Japanese Quince Seed Oil

CHAENOMELES JAPONICA SEED OIL

4.0

A gentle, plant-based oil that helps soften and condition skin without clogging pores, though research on its specific benefits is still limited.

Irritation

low

Source

natural

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Antioxidant

Japanese Snowbell Extract

Styrax Japonicus Branch/Fruit/Leaf Extract

3.8

A gentle botanical extract with antioxidant potential, but research is still early and benefits are not yet proven in human studies.

Irritation

low

Source

natural

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Antioxidant

Japanese Spindle Leaf Extract

Euonymus Japonicus Leaf Extract

3.8

A gentle plant extract with antioxidant potential, but research on its specific skin benefits is still limited.

Irritation

low

Source

natural

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Antioxidant

Japanese Star Anise Extract

ILLICIUM RELIGIOSUM BRANCH/LEAF EXTRACT

3.8

A gentle botanical extract with antioxidant potential, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

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Antioxidant

Japanese Tassel Fern Extract

Coniogramme Japonica Extract

3.8

A gentle fern extract that may help calm skin and fight environmental stress, though research is still early.

Irritation

low

Source

natural

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Soothing agent

Japanese Thistle Extract

CNICUS JAPONICUS EXTRACT

3.8

A gentle botanical extract with antioxidant and soothing potential, though human studies are limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Japanese Toadflax Extract

Linaria Japonica Extract

3.8

A gentle botanical extract that may help calm skin and fight free radical damage, though research is still early.

Irritation

low

Source

natural

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Soothing agent

Japanese Water Lily Root Extract

NUPHAR JAPONICUM ROOT EXTRACT

3.8

A gentle botanical extract that may help calm irritated skin and provide antioxidant support, though research is still early.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing agent

Japanese White Birch Bark Extract

Betula Platyphylla Japonica Bark Extract

4.0

A gentle, antioxidant-rich bark extract that helps calm and protect the skin, but research is still emerging.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Humectant

Japanese White Birch Juice

Betula Platyphylla Japonica Juice

4.0

A gentle, hydrating sap that soothes skin and provides antioxidant benefits, ideal for sensitive or dry skin types.

Irritation

low

Source

natural

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Antioxidant

Japanese Yam Root Extract

DIOSCOREA JAPONICA ROOT EXTRACT

3.8

A gentle plant extract with antioxidant potential, but research on its topical benefits is still limited.

Irritation

low

Source

natural

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Antioxidant

Japanese Yam Root Powder

DIOSCOREA JAPONICA ROOT POWDER

3.8

A gentle botanical powder that may help calm skin and provide antioxidant support, but research is limited.

Irritation

low

Source

natural

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Antioxidant

Japanese Yew Leaf Extract

Taxus Cuspidata Leaf Extract

3.8

A gentle, antioxidant-rich plant extract that may help calm skin and fight free radical damage, though research is still early.

Irritation

low

Source

natural

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Fragrance

Jasmine Extract

JASMINUM OFFICINALE EXTRACT

3.8

Jasmine extract adds a pleasant floral scent and may offer mild soothing benefits, but its main role in skincare is fragrance.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Fragrance

Jasmine Flower and Leaf Extract

JASMINUM OFFICINALE FLOWER/LEAF EXTRACT

3.8

A gentle, fragrant botanical extract that adds a pleasant scent and mild soothing benefits to skincare, but its active effects are limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Fragrance

Jasmine Flower Extract

Jasminum Officinale Flower Extract

3.8

A gentle, fragrant botanical extract that adds a pleasant scent and mild soothing benefits to skincare products.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Exfoliant

Jasmine Flower Powder

JASMINUM OFFICINALE FLOWER POWDER

3.8

A gentle, natural exfoliant with a pleasant floral scent, best suited for rinse-off products and sensitive skin types.

Irritation

low

Source

natural

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Fragrance

Jasmine Flower Water

JASMINUM SAMBAC FLOWER WATER

4.0

A gentle, aromatic hydrosol that adds a light floral scent and mild soothing feel to skincare, but its benefits beyond fragrance are not strongly supported by research.

Irritation

low

Source

natural

beautyskincarefragrance
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Emollient

Jasmine Flower Wax

JASMINUM SAMBAC FLOWER WAX

4.0

A gentle, naturally fragrant wax that softens skin and adds a light floral scent to products.

Irritation

low

Source

natural

beautyskincareemollient
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Fragrance

Jasmine Lactone

TETRAHYDRO-6-PENT-3-ENYL-PYRAN-2-ONE

3.8

Jasmine lactone is a natural fragrance ingredient with a delicate floral scent and mild skin-conditioning potential, but its benefits are mostly aromatic rather than therapeutic.

Irritation

low

Source

natural

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Antioxidant

Jasmine Leaf Cell Extract

JASMINUM SAMBAC LEAF CELL EXTRACT

3.8

A gentle, lab-grown plant extract that may help protect skin from environmental stress, but research is still early.

Irritation

low

Source

biotech

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Antioxidant

Jasmine Stem Extract

JASMINUM GRANDIFLORUM STEM EXTRACT

3.8

A gentle, antioxidant-rich botanical extract that may help calm skin and defend against environmental stress, though research is still early.

Irritation

low

Source

natural

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Fragrance Ingredient

Jasmopyrane

Jasmopyrane

3.5

Jasmopyrane is a widely used synthetic fragrance that mimics jasmine; it is generally safe at low levels but may cause irritation in sensitive individuals.

Irritation

low

Source

synthetic

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Fragrance

Jatamansi Oil

NARDOSTACHYS JATAMANSI OIL

3.8

Jatamansi oil offers antioxidant and calming benefits, but its strong fragrance and limited human studies mean it's best used in low concentrations and patch-tested first.

Irritation

moderate

Source

natural

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Antioxidant

Jatamansi Root Extract

NARDOSTACHYS JATAMANSI RHIZOME/ROOT EXTRACT

4.0

A gentle, antioxidant-rich botanical extract that may help calm skin and fight environmental stress, though human studies are limited.

Irritation

low

Source

natural

beautyskincarebotanical
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Fragrance

Jatamansi Root Oil

Valeriana Jatamansi Rhizome Oil

3.8

Jatamansi Root Oil offers antioxidant and soothing benefits, but its strong scent and potential for skin irritation mean it's best used in low concentrations.

Irritation

moderate

Source

natural

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Antioxidant

Jatropha Leaf Powder

JATROPHA CURCAS LEAF POWDER

3.5

A plant-based powder with early evidence of antioxidant activity, but limited human studies and potential for skin irritation in sensitive individuals.

Irritation

moderate

Source

natural

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