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

Exfoliant

Job's Tears Seed Powder

COIX LACRYMA-JOBI MA-YUEN SEED POWDER

3.8

A gentle, natural exfoliating powder that can help smooth skin without harsh abrasives, though research on its benefits is still limited.

Irritation

low

Source

natural

beautyskincareexfoliant
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Soothing Agent

Job's Tears Seed Water

Coix Lacryma-Jobi Ma-Yuen Seed Water

4.0

A gentle, hydrating botanical water that may help calm irritation and support a balanced skin barrier.

Irritation

low

Source

natural

beautyskincaresoothing
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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

beautyskincareantioxidant
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Antioxidant

Joe Pye Weed Extract

EUPATORIUM PURPUREUM FLOWER/LEAF/STEM EXTRACT

3.5

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

Irritation

low

Source

natural

beautyskincarebotanical extract
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Emollient

Jojoba Alcohol

JOJOBA ALCOHOL

4.0

A gentle, plant-derived fatty alcohol that softens skin and improves product feel without the drying effects of short-chain alcohols.

Irritation

low

Source

natural

beautyskincareemollient
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Humectant

Jojoba Amino Acids

JOJOBA AMINO ACIDS

4.3

Jojoba Amino Acids are a gentle, plant-based humectant that helps hydrate and support the skin barrier without clogging pores.

Irritation

low

Source

natural

beautyskincarehumectant
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Emollient

Jojoba Butter

SIMMONDSIA CHINENSIS (JOJOBA) BUTTER

4.3

Jojoba Butter is a gentle, plant-based emollient that mimics skin's natural sebum, making it an excellent moisturizer for most skin types without clogging pores.

Irritation

low

Source

natural

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Emollient

Jojoba Esters

JOJOBA ESTERS

4.5

Jojoba Esters are a gentle, plant-based emollient that mimics the skin's natural sebum, making it an excellent moisturizer for most skin types, especially oily and acne-prone skin.

Irritation

low

Source

natural

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Soothing Agent

Jojoba Meal Extract

SIMMONDSIA CHINENSIS (JOJOBA) MEAL EXTRACT

4.0

A gentle, antioxidant-rich byproduct of jojoba oil production that helps soothe and condition skin without clogging pores.

Irritation

low

Source

natural

beautyskincaresoothing
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Emollient

Jojoba Oil Amino Complex

JOJOBA SEED OIL AMINOPROPANEDIOL AMIDES/ESTERS

4.0

A gentle, semi-synthetic jojoba derivative that provides silky skin feel and conditioning without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Jojoba Oil Ester Blend

JOJOBA OIL/CAPRYLIC/CAPRIC TRIGLYCERIDE ESTERS

4.3

A gentle, non-greasy emollient that mimics skin's natural oils and improves product texture without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emulsifier

Jojoba Oil PEG-150 Esters

JOJOBA OIL PEG-150 ESTERS

4.0

A gentle, PEG-modified jojoba oil that helps blend water and oil in cleansers and creams without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Jojoba Oil PEG-8 Esters

JOJOBA OIL PEG-8 ESTERS

4.0

A gentle, water-soluble jojoba derivative that helps blend oil and water in formulas while adding light skin conditioning.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Hair Conditioner

Jojoba Protein Conditioner

LAURDIMONIUM HYDROXYPROPYL HYDROLYZED JOJOBA PROTEIN

4.0

A gentle, protein-derived conditioning ingredient that helps soften hair and skin without heavy buildup.

Irritation

low

Source

semi-synthetic

beautyskincarehaircare
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Emollient

Jojoba Seed Extract

SIMMONDSIA CHINENSIS SEED EXTRACT

4.5

Jojoba Seed Extract is a gentle, skin-identical emollient that hydrates without clogging pores, making it a safe choice for most skin types.

Irritation

low

Source

natural

beautyskincareemollient
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Exfoliant

Jojoba Seed Powder

SIMMONDSIA CHINENSIS SEED POWDER

3.8

Jojoba seed powder is a gentle, natural exfoliant that helps remove dead skin cells without over-stripping, making it suitable for most skin types.

Irritation

low

Source

natural

beautyskincareexfoliant
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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

beautyskincareantioxidant
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Emollient

Jojoba Wax

SIMMONDSIA CHINENSIS SEED WAX

4.5

Jojoba wax is a gentle, plant-based emollient that mimics skin's natural oils, making it ideal for dry or sensitive skin.

Irritation

low

Source

natural

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Emulsifier

Jojoba Wax PEG-120 Esters

JOJOBA WAX PEG-120 ESTERS

4.0

A gentle, non-stripping emulsifier derived from jojoba wax that helps cleanse without drying out the skin.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Jojoba Wax PEG-80 Esters

JOJOBA WAX PEG-80 ESTERS

4.0

A gentle, water-soluble cleanser derived from jojoba wax that effectively removes oil and makeup without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Emollient

Jojoba-Macadamia Ester Blend

JOJOBA OIL/MACADAMIA SEED OIL ESTERS

4.5

A gentle, plant-derived emollient that mimics skin's natural oils, making it ideal for dry or sensitive skin.

Irritation

low

Source

natural

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Emollient

Jojoba-Macadamia Phytosteryl Esters

JOJOBA OIL/MACADAMIA SEED OIL PHYTOSTERYL ESTERS

4.5

A gentle, plant-based emollient that feels silky on skin and helps reinforce the moisture barrier without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Surfactant

Jojobamidopropyl Betaine

JOJOBAMIDOPROPYL BETAINE

4.5

A gentle, jojoba-derived surfactant that cleanses without stripping the skin, making it ideal for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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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

beautyskincareantioxidant
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Soothing agent

Juazeiro Bark Extract

Ziziphus joazeiro bark extract

3.8

A gentle botanical extract from the Juazeiro tree that may help soothe the scalp and condition hair, though scientific evidence is still limited.

Irritation

low

Source

natural

beautyskincarehaircare
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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Astringent

Juliana Bark Extract

Juliana Adstringens Bark Extract

3.5

A gentle botanical astringent that may help tighten pores and calm skin, but research is limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing Agent

Juncus Decipiens Stem Extract

JUNCUS DECIPIENS STEM EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincarebotanical extract
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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Fragrance

Juniper Berry & Leaf Water

Juniperus Communis Fruit/Leaf Water

3.8

A gentle, aromatic botanical water that adds a fresh scent and mild antioxidant benefits to skincare, but its direct skin effects are not well-studied.

Irritation

low

Source

natural

beautyskincarebotanical extract
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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Fragrance

Juniper Berry Oil

JUNIPERUS OXYCEDRUS FRUIT OIL

3.5

Juniper berry oil adds a woody, fresh scent to products but may irritate sensitive skin and has limited proven skincare benefits beyond fragrance.

Irritation

moderate

Source

natural

beautyskincarefragrance
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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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Soothing Agent

Juniper Seed Water

Juniperus Communis Seed Water

3.8

A mild, water-based botanical extract that may help calm skin and provide antioxidant protection, but research is limited.

Irritation

low

Source

natural

beautyskincaresoothing agent
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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Fragrance

Juniper Wood Oil

Juniperus Communis Wood Oil

4.0

Juniper Wood Oil adds a woody, fresh scent to skincare while offering antioxidant benefits, but it can be irritating for sensitive skin.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Soothing agent

Juniper Wood Tar

JUNIPERUS OXYCEDRUS WOOD TAR

3.8

A traditional botanical ingredient with antimicrobial and soothing properties, best for oily or blemish-prone skin, but can be irritating for sensitive types.

Irritation

moderate

Source

natural

beautyskincaresoothing
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Skin conditioning

Juniper Wood Water

Juniperus Communis Wood Water

3.8

A gentle, aromatic water from juniper wood that adds a fresh scent and mild purifying feel to skincare products.

Irritation

low

Source

natural

beautyskincarebotanical
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Antioxidant

Jute Leaf Extract

Corchorus Capsularis Extract

3.8

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

Irritation

low

Source

natural

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Soothing Agent

Jute Leaf Powder

Corchorus Capsularis Powder

3.8

A gentle, plant-based powder that may help calm skin and provide antioxidant protection, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

beautyskincarebotanical
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Antioxidant

Jute Leaf/Stem Extract

Corchorus olitorius leaf/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

Kadsura Coccinea Fruit Extract

KADSURA COCCINEA FRUIT EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Kadsura Coccinea Root Extract

Kadsura Coccinea Root Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Kadsura Japonica Extract

Kadsura Japonica Branch/Fruit/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

Kaempferol

KAEMPFEROL

4.0

Kaempferol is a plant-derived antioxidant that helps protect skin from environmental stress and may calm irritation, but human studies are limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Kaempferol Rhamnoside

Kaempferol Rhamnoside

3.8

A gentle plant antioxidant that may help calm skin and defend against daily pollution, though human studies are still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Kakadu Plum Fruit Extract

Terminalia ferdinandiana fruit extract

4.5

A powerful natural antioxidant from the Kakadu plum, rich in vitamin C, that helps brighten skin and protect against environmental damage.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Kalahari Melon Leaf Extract

CYCLOPIA GENISTOIDES LEAF EXTRACT

4.0

A gentle, antioxidant-rich plant 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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Soothing agent

Kalanchoe Leaf Extract

KALANCHOE GASTONIS-BONNIERI LEAF EXTRACT

3.8

A gentle plant extract with potential soothing and antioxidant benefits, but research on this specific species is limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing Agent

Kalanchoe Spathulata Extract

Kalanchoe Spathulata Extract

3.8

A gentle, plant-derived extract with antioxidant and soothing potential, though clinical evidence in humans is still limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Kale Leaf Extract

Brassica Oleracea Acephala Leaf Extract

4.0

Kale Leaf Extract is a gentle antioxidant-rich ingredient that helps protect skin from environmental stress while providing soothing benefits.

Irritation

low

Source

natural

beautyskincareantioxidant
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