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 20,303
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

Soothing Agent

Ivy Stem Extract

Hedera Helix (Ivy) Stem Extract

3.8

A gentle botanical extract that may help calm skin and fight free radicals, but its benefits are modest and not a cure-all.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Iyo Citrus Fruit Extract

Citrus Iyo Fruit Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Iyo Citrus Peel Extract

Citrus Iyo Peel Extract

4.0

A gentle citrus peel extract that may help brighten skin and fight free radicals, but research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Fragrance

Iyo Citrus Peel Oil

CITRUS IYO PEEL OIL

3.8

A fragrant citrus oil that adds a fresh scent to products but may cause irritation for sensitive skin due to natural aromatic compounds.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Astringent

Iyo Citrus Peel Water

Citrus Iyo Peel Water

3.8

A gentle, water-based citrus extract that may offer mild antioxidant and refreshing benefits, but research is limited.

Irritation

low

Source

natural

beautyskincareastringent
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Antioxidant

Jabara Citrus Juice

CITRUS JABARA JUICE

3.8

A gentle, antioxidant-rich citrus juice that may help brighten skin and fight free radical damage, but research is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Jabara Peel Extract

CITRUS JABARA PEEL EXTRACT

4.0

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Hair conditioning agent

Jaborandi Leaf Extract

Pilocarpus Pennatifolius Leaf Extract

3.5

Jaborandi leaf extract is a traditional botanical with potential scalp-stimulating benefits, but clinical evidence is limited and it may cause irritation in sensitive individuals.

Irritation

moderate

Source

natural

beautyskincarebotanical extract
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Antioxidant

Jabuticaba Fruit Extract

PLINIA CAULIFLORA FRUIT EXTRACT

4.0

A gentle, antioxidant-rich fruit extract that helps protect skin from environmental stress while offering mild soothing benefits.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Jabuticaba Pulp Extract

MYRCIARIA CAULIFLORA PULP

4.0

A gentle, antioxidant-rich fruit extract that helps protect skin from environmental stress while offering mild soothing benefits.

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing Agent

Jack Bean Leaf Extract

Canavalia Ensiformis Leaf Extract

3.8

A gentle, plant-based extract that may help calm irritated skin and provide antioxidant support, though research is still emerging.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Antioxidant

Jack Pine Bark Extract

Pinus Banksiana Bark Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Jackfruit Seed Extract

Artocarpus Heterophyllus Seed Extract

3.8

A gentle, plant-based antioxidant extract that may help hydrate and protect skin, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Jade Plant Leaf Extract

Crassula Argentea 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

beautyskincareantioxidant
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Antioxidant

Jambolan Fruit Juice

EUGENIA JAMBOS FRUIT JUICE

3.8

A gentle, antioxidant-rich fruit juice that may help soothe and protect skin, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Japanese Alder Bark Extract

Alnus Japonica Bark Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing agent

Japanese Alder Leaf/Stem Water

Alnus Japonica Leaf/Stem Water

3.8

A gentle, water-based botanical extract that may help calm skin and provide antioxidant protection, though research is still emerging.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Antioxidant

Japanese Ampelopsis Root Extract

Ampelopsis Japonica Root Extract

3.8

A gentle botanical 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

beautyskincarebotanical extract
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Antioxidant

Japanese Angelica Extract

Angelica Japonica Extract

3.8

A gentle botanical extract that may help calm skin and fight free radicals, but research is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Humectant

Japanese Apricot Fruit Water

Prunus Mume Fruit Water

4.0

A gentle, hydrating base ingredient from Japanese apricot fruit that may offer antioxidant and soothing benefits, but research is limited compared to more studied fruit waters.

Irritation

low

Source

natural

beautyskincarehumectant
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Antioxidant

Japanese Apricot Seed Extract

Prunus Mume Seed Extract

4.0

A gentle, antioxidant-rich extract from Japanese apricot seeds that helps protect skin from environmental stress while supporting a calm, even-toned complexion.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Japanese Ardisia Extract

Ardisia Japonica Branch/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

beautyskincareantioxidant
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Antioxidant

Japanese Beautyberry Fruit Extract

Callicarpa Japonica Fruit Extract

4.0

A gentle, antioxidant-rich fruit extract that helps protect skin from environmental stress and may support a more even-looking complexion.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Japanese Beech Bark Extract

Fagus Crenata Bark Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing Agent

Japanese Butterbur Extract

PETASITES JAPONICUS LEAF/STEM EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincaresoothing agent
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Soothing Agent

Japanese Butterbur Leaf Extract

PETASITES JAPONICUS LEAF EXTRACT

3.8

A gentle botanical extract that may help calm irritated skin and provide antioxidant protection, but research is still emerging.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Antioxidant

Japanese Cedar Bark Extract

Cryptomeria japonica bark extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Japanese Cedar Bark Ferment

Cryptomeria Japonica Bark Ferment Extract

3.8

A gentle, antioxidant-rich bark ferment that may help calm skin and defend against environmental stress, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincarefragrance
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincarebotanical
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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

beautyskincarebotanical extract
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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

beautyskincareantioxidant
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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

beautyskincareantioxidantsoothing
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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

beautyskincareantioxidant
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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

beautyskincarebotanical
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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