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 4,092
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 Bud Extract

Cryptomeria Japonica Bud Extract

3.8

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

Irritation

low

Source

natural

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Antioxidant

Japanese Cedar Callus Extract

Cryptomeria Japonica Callus Culture Extract

3.8

A plant-based antioxidant from Japanese cedar callus cells that may help protect skin from environmental stress, though research is still emerging.

Irritation

low

Source

biotech

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Antioxidant

Japanese Cedar Extract

Cryptomeria Japonica Branch/Leaf Extract

3.8

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

Irritation

low

Source

natural

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Antioxidant

Japanese Cedar Leaf Extract

Cryptomeria japonica leaf extract

3.8

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

Irritation

low

Source

natural

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Antioxidant

Japanese Cedar Stem Extract

Cryptomeria japonica stem extract

3.8

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

Irritation

low

Source

natural

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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 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 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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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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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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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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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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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 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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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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Antioxidant

Java Plum Fruit Extract

EUGENIA CUMINI FRUIT EXTRACT

3.8

A gentle, antioxidant-rich fruit extract that may help calm skin and fight free radical damage, though human studies are limited.

Irritation

low

Source

natural

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Antioxidant

Java Plum Leaf Extract

EUGENIA CUMINI LEAF EXTRACT

3.8

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

Java Plum Root Extract

EUGENIA CUMINI ROOT EXTRACT

3.8

A gentle 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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Antioxidant

Java Turmeric Root Powder

Curcuma Heyneana Root Powder

3.8

A gentle, antioxidant-rich powder from a turmeric relative that may help calm skin and fight free radicals, but research is still limited.

Irritation

low

Source

natural

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Antioxidant

Javanese Turmeric Root Powder

Curcuma Xanthorrhiza Root Powder

3.8

A gentle, antioxidant-rich powder from Javanese turmeric that may help calm skin and fight free radicals, but research is still early.

Irritation

low

Source

natural

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Antioxidant

Jeju Lily Extract

LYCORIS CHEJUENSIS EXTRACT

4.0

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

Irritation

low

Source

natural

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Antioxidant

Jiaogulan Extract

Gynostemma Pentaphyllum Powder

3.8

A gentle, plant-based antioxidant that may help calm skin and defend against environmental stress, though human skincare studies are still limited.

Irritation

low

Source

natural

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Antioxidant

Jiaogulan Leaf Extract

Gynostemma Pentaphyllum Leaf Extract

4.0

A gentle plant extract rich in antioxidants that may help calm skin and defend against environmental stress, though human skincare studies are still limited.

Irritation

low

Source

natural

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Humectant

Jicama Root Extract

Pachyrhizus erosus root extract

3.8

Jicama root extract is a gentle, hydrating ingredient with antioxidant potential, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

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Antioxidant

Jiu Extract

Jiu Extract

3.5

Jiu Extract is a gentle botanical with antioxidant potential, but research is limited and it is not a standout ingredient in most formulations.

Irritation

low

Source

natural

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Antioxidant

Job's Tears Shell Extract

Coix Lacryma-Jobi Ma-Yuen Shell Extract

3.8

A gentle plant extract that may help calm skin and fight free radicals, though research is still early.

Irritation

low

Source

natural

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Antioxidant

Jojoba Seedcake Extract

SIMMONDSIA CHINENSIS (JOJOBA) SEEDCAKE EXTRACT

4.0

A gentle, antioxidant-rich extract from leftover jojoba seed material that helps soothe and protect skin.

Irritation

low

Source

natural

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Antioxidant

Jonquil Extract

NARCISSUS JONQUILLA EXTRACT

3.5

A gentle botanical extract with antioxidant potential, but limited research supports its standalone benefits in skincare.

Irritation

low

Source

natural

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Antioxidant

Jujube Extract

Ziziphus Sativa Extract

3.8

A gentle, antioxidant-rich botanical extract that may help soothe skin and fight free radical damage, though more human studies are needed.

Irritation

low

Source

natural

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Antioxidant

Jujube Fruit Extract

Ziziphus Jujuba Fruit Extract

4.0

Jujube fruit extract is a gentle, antioxidant-rich ingredient that helps protect skin from environmental stress and may calm irritation.

Irritation

low

Source

natural

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Antioxidant

Jujube Seed Extract

ZIZIPHUS JUJUBA SEED EXTRACT

4.0

A gentle, antioxidant-rich seed extract that helps calm skin and fight environmental stress, though research is still early.

Irritation

low

Source

natural

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Antioxidant

Juniper & Rosemary Fruit Extract

Juniperus Communis Fruit/Rosmarinus Officinalis Extract

4.0

A gentle botanical blend that helps protect skin from environmental stress and may calm minor irritation.

Irritation

low

Source

natural

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Antioxidant

Juniper Berry & Leaf Extract

Juniperus Communis Branch/Fruit/Leaf Extract

3.8

A gentle botanical extract with antioxidant benefits, but its fragrance potential means sensitive skin should patch test first.

Irritation

low

Source

natural

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Antioxidant

Juniper Berry Extract

Juniperus Oxycedrus Fruit Extract

3.8

A gentle botanical extract that helps protect skin from environmental stress and may calm minor irritation.

Irritation

low

Source

natural

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Skin-conditioning agent

Juniper Berry Ferment Filtrate

SACCHAROMYCES/JUNIPERUS COMMUNIS SEED WATER FERMENT FILTRATE

4.0

A gentle fermented ingredient that may help balance skin’s microbiome and offer mild antioxidant protection, though human studies are limited.

Irritation

low

Source

biotech

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Soothing Agent

Juniper Berry Water

Juniperus Communis Fruit Water

3.8

A gentle, antioxidant-rich botanical water that adds a subtle herbal note and soothing feel to skincare products.

Irritation

low

Source

natural

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Antioxidant

Juniper Callus Extract

Juniperus Communis Callus Extract

4.0

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

Irritation

low

Source

natural

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Antioxidant

Juniper Sprout Extract

Juniperus Communis Sprout Extract

3.8

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

Irritation

low

Source

natural

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Antioxidant

Juniper Wood Extract

Juniperus Oxycedrus Wood Extract

3.8

A natural extract with antioxidant and soothing potential, but may cause irritation in sensitive skin due to its aromatic compounds.

Irritation

moderate

Source

natural

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