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

Colorant

Logwood Extract

HAEMATOXYLUM CAMPECHIANUM WOOD EXTRACT

3.8

Logwood extract is a natural pigment and antioxidant, but its skincare benefits are less studied than its coloring ability.

Irritation

low

Source

natural

beautyskincarecolorant
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Emollient

London Rocket Seed Oil

Sisymbrium Irio Seed Oil

4.0

A gentle, plant-based oil that hydrates and softens skin without feeling greasy, though research on its specific benefits is still limited.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

Longan Fruit Extract

Nephelium Longana Fruit Extract

3.8

Longan fruit extract is a gentle antioxidant that may help protect skin from environmental stress, but research on its topical benefits is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Longan Seed Extract

Nephelium Longana Seed Extract

4.0

A gentle plant-based antioxidant that helps protect skin from environmental stress, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Fragrance

Longifolene

LONGIFOLENE

3.5

Longifolene is a natural pine-derived fragrance compound with some emerging research on anti-inflammatory benefits, but its primary role in skincare is scent.

Irritation

low

Source

natural

beautyskincarefragrance
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Exfoliant

Loofah Extract

Luffa Operculata Extract

3.8

A gentle plant-based exfoliant that helps smooth skin without harsh scrubbing, but research on its benefits is still limited.

Irritation

low

Source

natural

beautyskincareexfoliant
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Antioxidant

Lophophytum Elongatum Extract

Lophophytum Elongatum Extract

3.5

A gentle, plant-derived antioxidant with limited research, best used as a supporting ingredient in soothing formulations.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Loquat Fruit & Leaf Extract

Eriobotrya Japonica Fruit/Leaf Extract

4.0

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing agent

Loquat Leaf Powder

Eriobotrya japonica leaf powder

3.8

A gentle botanical powder that may help calm skin and provide antioxidant benefits, but research is still early.

Irritation

low

Source

natural

beautyskincarebotanical
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Antioxidant

Loquat Leaf Protoplasts

ERIOBOTRYA JAPONICA LEAF PROTOPLASTS

3.8

A gentle, lab-grown plant cell ingredient that may help calm and protect skin, but research is still early.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Exfoliant

Loquat Seed Powder

ERIOBOTRYA JAPONICA SEED POWDER

3.8

A gentle, natural exfoliating powder from loquat seeds, best for physical scrubs and masks, but research on its skincare benefits is still limited.

Irritation

low

Source

natural

beautyskincareexfoliant
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Antioxidant

Lotus & Lizardtail Leaf Extract

Nelumbo Nucifera Leaf / Saururus Chinensis Extract

3.8

A gentle botanical blend that may help calm skin and fight oxidative stress, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Lotus & Multi-Sprout Extract

NELUMBO NUCIFERA GERM/(BRASSICA NAPUS/RHYNCHOSIA NULUBILIS/HORDEUM VULGARE/PERILLA OCYMOIDES/POLYGONUM FAGOPYRUM/TRITICUM VULGARE) SPROUT EXTRACT

4.0

A nutrient-rich botanical blend that may help protect skin from environmental stress and support a healthy glow, though human studies are limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Lotus & Orostachys Extract

Nelumbo Nucifera Leaf Extract / Orostachys Japonica Extract

4.0

A gentle, antioxidant-rich botanical blend that may help calm skin and protect against environmental stress.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Lotus Callus Extract

Nelumbo Nucifera Callus Culture Extract

4.0

A gentle, plant-based antioxidant from lotus stem cells that may help calm and protect skin, though human studies are limited.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Lotus Ferment Extract

Saccharomyces/Nelumbo Nucifera Ferment Extract Filtrate

4.0

A gentle fermented lotus extract that may help calm skin and defend against environmental stress, though human studies are limited.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Lotus Flower Extract

Nelumbo Nucifera Flower Extract

4.0

Lotus flower extract is a gentle, antioxidant-rich botanical that helps soothe and hydrate skin without irritation.

Irritation

low

Source

natural

beautyskincareantioxidant
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Emollient

Lotus Flower Oil

NELUMBIUM SPECIOSUM FLOWER OIL

4.0

A gentle, naturally fragrant oil that hydrates and soothes skin, but scientific evidence for its unique benefits is still limited.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

Lotus Flower Powder

Nelumbo Nucifera Flower Powder

3.8

A gentle botanical powder that can help calm skin and provide mild antioxidant protection, but its benefits are modest compared to more concentrated extracts.

Irritation

low

Source

natural

beautyskincarebotanical
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Soothing Agent

Lotus Flower Water

Nelumbo Nucifera Flower Water

4.0

Lotus flower water is a mild, hydrating botanical water that soothes skin and adds a subtle floral scent, but its benefits beyond basic moisture are not strongly backed by research.

Irritation

low

Source

natural

beautyskincaresoothinghumectant
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Emollient

Lotus Flower Wax

Nelumbo Nucifera Flower Wax

4.0

A gentle, plant-derived wax that adds a smooth, non-greasy feel to lip and skin products, with low irritation potential.

Irritation

low

Source

natural

beautyskincareemollient
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Humectant

Lotus Flower, Leaf & Stem Juice

Nelumbo Nucifera Flower/Leaf/Stem Juice

4.0

A gentle, water-like juice from the lotus plant that hydrates and provides antioxidant protection, ideal for sensitive or dehydrated skin.

Irritation

low

Source

natural

beautyskincareantioxidantsoothing
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Antioxidant

Lotus Germ Extract

Nelumbo Nucifera Germ Extract

4.0

A gentle, antioxidant-rich extract from lotus seeds that may help protect skin from environmental stress and support a calm, even-looking complexion.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Lotus Leaf Cell Culture Powder

NYMPHAEA LOTUS LEAF CELL CULTURE POWDER

4.0

A gentle, lab-grown lotus ingredient that helps protect skin from environmental stress and may calm irritation.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Lotus Leaf Ferment Filtrate

Bacillus/Nelumbo Nucifera Leaf Extract Ferment Filtrate

4.0

A gentle, antioxidant-rich fermented ingredient that may help soothe skin and protect against environmental stress, though human studies are limited.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Lotus Phytoplacenta Extract

Nelumbo Nucifera Phytoplacenta Extract

4.0

A gentle, plant-based antioxidant extract that may help soothe and protect skin, though human research is still limited.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Soothing Agent

Lotus Root Extract

NYMPHAEA LOTUS ROOT EXTRACT

4.0

A gentle, antioxidant-rich botanical extract that helps calm irritated skin and provides light hydration without clogging pores.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Antioxidant

Lotus Root Powder

Nelumbo Nucifera Root Powder

4.0

Lotus root powder is a gentle, antioxidant-rich ingredient that helps soothe skin and absorb excess oil without clogging pores.

Irritation

low

Source

natural

beautyskincareantioxidant
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Humectant

Lotus Root Water

Nelumbo Nucifera Root Water

4.0

A gentle, antioxidant-rich water that hydrates and soothes the skin, ideal for sensitive or dry types.

Irritation

low

Source

natural

beautyskincarehumectant
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Antioxidant

Lotus Seed Extract

NELUMBIUM SPECIOSUM SEED EXTRACT

4.0

A gentle, plant-based antioxidant that helps calm irritation and protect skin from environmental stress.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Lotus Seed Ferment Filtrate

Lactobacillus/Nelumbo Nucifera Seed Ferment Filtrate

4.0

A gentle fermented ingredient that may help soothe and protect the skin, though human studies are limited.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Emollient

Lotus Seed Oil

NELUMBO NUCIFERA SEED OIL

4.0

A gentle, non-greasy oil that hydrates and provides antioxidant protection, suitable for most skin types including sensitive skin.

Irritation

low

Source

natural

beautyskincareemollient
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Exfoliant

Lotus Seed Powder

NELUMBO NUCIFERA SEED POWDER

3.8

A gentle, natural exfoliating powder with antioxidant properties, best suited for rinse-off products like masks and scrubs.

Irritation

low

Source

natural

beautyskincareexfoliant
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Antioxidant

Lotus Somatic Embryo Extract

LOTUS JAPONICUS SOMATIC EMBRYO EXTRACT

3.8

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

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Lotus Sprout Extract

Nelumbo Nucifera Germ/Sprout Extract

4.0

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Lotus Stem Extract

Nelumbo Nucifera Stem Extract

4.0

Lotus stem extract is a gentle, antioxidant-rich ingredient that helps soothe and hydrate skin without irritation.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Lotus Symbiosome Extract

Lotus Japonicus Symbiosome Extract

4.0

A gentle, biotech-derived antioxidant that may help protect skin from environmental stress while supporting hydration.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Loureiro Cinnamon Bark Extract

Cinnamomum Loureiroi Bark Extract

3.8

A potent antioxidant bark extract that can help protect skin from environmental stress, but may cause irritation in sensitive individuals due to its natural aromatic compounds.

Irritation

moderate

Source

natural

beautyskincareantioxidant
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Antioxidant

Lovage Leaf Extract

LEVISTICUM OFFICINALE LEAF EXTRACT

3.8

Lovage leaf extract is a gentle botanical antioxidant that may help calm skin and protect against environmental stress, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Fragrance

Lovage Leaf Oil

LEVISTICUM OFFICINALE LEAF OIL

3.8

Lovage leaf oil adds a fresh, herbal scent to products but may cause irritation in sensitive skin, so it's best used in low concentrations.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Antioxidant

Lovage Root Extract

Levisticum Officinale Root Extract

3.8

Lovage Root Extract is a gentle botanical antioxidant that may help calm skin and protect against environmental stress, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Fragrance

Lovage Root Oil

LEVISTICUM OFFICINALE ROOT OIL

3.5

Lovage Root Oil adds a herbal, celery-like scent to products but has limited research on skin benefits and may irritate sensitive skin.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Antioxidant

Lowbush Blueberry Fruit Extract

Vaccinium Angustifolium Fruit Extract

4.0

A gentle, antioxidant-rich fruit extract that helps protect skin from environmental stress and supports a healthy-looking complexion.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Lowbush Blueberry Fruit Juice

VACCINIUM ANGUSTIFOLIUM FRUIT JUICE

4.0

A gentle, antioxidant-rich fruit juice that helps protect skin from environmental stress while providing light hydration.

Irritation

low

Source

natural

beautyskincareantioxidant
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Exfoliant

Lowbush Blueberry Seed

VACCINIUM ANGUSTIFOLIUM SEED

4.0

A gentle, natural exfoliant from blueberry seeds that also provides antioxidant benefits, best suited for rinse-off products.

Irritation

low

Source

natural

beautyskincareexfoliant
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Antioxidant

Lucuma Pulp Extract

Pouteria Lucuma Pulp Extract

3.8

A gentle, antioxidant-rich fruit extract that may help protect skin from environmental stress while providing light hydration.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Lucuma Seed Extract

Pouteria lucuma seed extract

3.8

A gentle plant extract that may help protect skin from environmental stress and support hydration, though research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Exfoliant

Luffa Cylindrica

Luffa Cylindrica

3.8

Luffa cylindrica is a natural exfoliant that gently buffs away dead skin cells, but it can be too abrasive for sensitive skin if used too aggressively.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Antioxidant

Luffa Cylindrica Callus Extract

Luffa Cylindrica Callus Extract

3.8

A gentle, plant-derived antioxidant extract that may help soothe skin and fight free radical damage, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Humectant

Luffa Cylindrica Stem Sap

LUFFA CYLINDRICA STEM SAP

3.8

A gentle, plant-derived humectant that helps hydrate and calm the skin, though research is still emerging.

Irritation

low

Source

natural

beautyskincarehumectant
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Antioxidant

Luffa Extract

Luffa Cylindrica Fruit/Leaf/Stem Extract

3.8

Luffa extract is a gentle, plant-derived antioxidant that may help soothe skin and fight free radicals, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Exfoliant

Luffa Fruit Powder

Luffa Cylindrica Fruit Powder

4.0

A gentle, natural physical exfoliant from the luffa gourd, but can be too abrasive for sensitive or compromised skin.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Humectant

Luffa Fruit Water

Luffa Cylindrica Fruit Water

3.8

Luffa fruit water is a mild, plant-derived hydrator that can soothe and refresh skin, but it has limited research and is not a powerhouse active.

Irritation

low

Source

natural

beautyskincarehumectant
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Antioxidant

Luffa Leaf Extract

Luffa Cylindrica Leaf Extract

3.8

Luffa Leaf Extract is a gentle botanical with antioxidant and soothing potential, but research is still early and benefits are not yet proven in human studies.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing Agent

Luffa Root Extract

Luffa Cylindrica Root Extract

3.5

A gentle, plant-based extract with early evidence of soothing and antioxidant benefits, but more research is needed to confirm its efficacy in skincare.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Emollient

Luffa Seed Oil

Luffa Cylindrica Seed Oil

4.0

Luffa seed oil is a gentle, plant-based emollient that helps soften and smooth skin without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

Luffa Stem Extract

Luffa Cylindrica Stem Extract

3.8

Luffa Stem Extract is a gentle, antioxidant-rich botanical that may help calm skin and fight free radical damage, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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