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

Anti-aging

Bis-SH-Pentapeptide-38 Porphyra 334

BIS-SH-PENTAPEPTIDE-38 PORPHYRA 334

3.8

A novel peptide-marine extract hybrid that may help protect skin from UV-related damage, but human studies are limited.

Irritation

low

Source

semi-synthetic

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Anti-aging

Bis-SH-Pentapeptide-5 Porphyra 334

Bis-SH-Pentapeptide-5 Porphyra 334

4.0

A novel peptide-algae hybrid that may help protect skin from UV damage and support collagen, but clinical evidence is still limited.

Irritation

low

Source

semi-synthetic

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Antioxidant

Bitter Almond Seed Extract

PRUNUS AMYGDALUS AMARA SEED EXTRACT

3.8

A plant extract that may help calm skin and fight free radicals, but it requires careful processing to remove potentially irritating compounds.

Irritation

moderate

Source

natural

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Antioxidant

Bitter Orange Fruit Extract

CITRUS AURANTIUM AMARA FRUIT EXTRACT

3.8

A natural antioxidant extract that may help brighten skin and tighten pores, but can be irritating for sensitive skin due to its citrus content.

Irritation

moderate

Source

natural

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Antioxidant

Bitter Orange Fruit Juice Extract

CITRUS AURANTIUM AMARA (BITTER ORANGE) FRUIT JUICE EXTRACT

3.8

A natural antioxidant and astringent from bitter orange juice, but may cause irritation in sensitive skin due to natural fruit acids.

Irritation

moderate

Source

natural

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Antioxidant

Bitter Orange Leaf/Twig Extract

CITRUS AURANTIUM AMARA LEAF/TWIG EXTRACT

3.5

A gentle antioxidant extract from bitter orange leaves and twigs, but limited research and potential for skin irritation in sensitive individuals.

Irritation

moderate

Source

natural

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Antioxidant

Bitter Orange Peel Extract

Citrus Aurantium Amara Peel Extract

3.8

A natural antioxidant extract that can help brighten and tighten skin, but may cause irritation for sensitive types due to natural acids and essential oil components.

Irritation

moderate

Source

natural

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Astringent

Bitter Orange Wood Extract

CITRUS AURANTIUM AMARA (BITTER ORANGE) WOOD EXTRACT

3.8

A gentle plant extract that may help tighten pores and fight free radicals, but research on its benefits is still limited.

Irritation

low

Source

natural

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Antioxidant

Black Bamboo Stem Extract

Phyllostachys Nigra Stem Extract

4.0

A gentle, plant-based antioxidant that helps protect skin from environmental stress while providing mild soothing benefits.

Irritation

low

Source

natural

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Antioxidant

Black Crowberry Callus Extract

EMPETRUM NIGRUM CALLUS EXTRACT

4.0

A gentle, lab-grown antioxidant from black crowberry cells that may help protect skin from environmental stress and calm irritation.

Irritation

low

Source

biotech

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Antioxidant

Black Crowberry Extract

EMPETRUM NIGRUM FRUIT EXTRACT

4.0

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

Irritation

low

Source

natural

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Antioxidant

Black Crowberry Juice

EMPETRUM NIGRUM FRUIT JUICE

3.8

A gentle, antioxidant-rich fruit juice that may help calm skin and fight free radical damage, though research is still emerging.

Irritation

low

Source

natural

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Antioxidant

Black Crowberry Leaf Extract

EMPETRUM NIGRUM LEAF EXTRACT

3.8

A gentle, antioxidant-rich leaf extract that may help protect skin from environmental stress, though research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

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Antioxidant

Black Locust Extract

Robinia Pseudoacacia Flower/Leaf/Stem Extract

3.8

A gentle, antioxidant-rich botanical extract that may help soothe and protect skin, but research is still emerging.

Irritation

low

Source

natural

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Soothing Agent

Black Locust Flower Extract

Robinia Pseudoacacia Flower Extract

3.8

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

Irritation

low

Source

natural

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Antioxidant

Black Mulberry Root Extract

Morus Nigra Root Extract

4.0

A gentle, antioxidant-rich botanical 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

Black Mustard Seed Ferment

Lactobacillus/Brassica Nigra Seed Ferment Extract

3.8

A fermented botanical extract with potential antioxidant and barrier-supporting properties, but clinical evidence is still limited.

Irritation

low

Source

biotech

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Antioxidant

Black Oat Seed Extract

Avena Strigosa Seed Extract

4.0

A gentle, plant-based antioxidant that helps calm sensitive skin and defend against daily environmental damage.

Irritation

low

Source

natural

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Antioxidant

Black Pepper Callus Extract

Piper Nigrum (Black Pepper) Callus Extract

3.8

A biotech-derived antioxidant from black pepper callus that may help calm skin and fight free radicals, but research is still early.

Irritation

low

Source

biotech

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Antioxidant

Black Pepper Callus Powder

Piper Nigrum (Black Pepper) Callus Powder

3.8

A gentle, lab-grown antioxidant from black pepper cells that may help calm skin and fight free radicals.

Irritation

low

Source

biotech

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Antioxidant

Black Pepper Fruit Oil

Piper Nigrum Fruit Oil

3.8

Black Pepper Fruit Oil adds warmth and antioxidant benefits to skincare, but its strong aroma and potential for irritation mean it's best used in low concentrations and patch-tested first.

Irritation

moderate

Source

natural

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Antioxidant

Black Pepper Seed Oil

Piper Nigrum Seed Oil

3.8

Black Pepper Seed Oil offers antioxidant and warming benefits, but its potency means it must be used in low concentrations to avoid irritation.

Irritation

moderate

Source

natural

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Antioxidant

Black Pine Twig Leaf Extract

Pinus Nigra Twig Leaf Extract

4.0

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

Irritation

low

Source

natural

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Antioxidant

Black Poplar Extract

Populus Nigra Bark/Bud/Leaf/Twig 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

Black Poplar Flower Extract

POPULUS NIGRA FLOWER EXTRACT

4.0

A gentle, plant-derived antioxidant that helps protect skin from environmental stress while offering mild soothing benefits.

Irritation

low

Source

natural

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Antioxidant

Black Raspberry Fruit Juice

Rubus Occidentalis Fruit Juice

3.8

A gentle, antioxidant-rich fruit juice that may help soothe and protect skin, but its benefits are less studied than those of more common berry extracts.

Irritation

low

Source

natural

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Antioxidant

Black Sea Rod Oil

Pterogorgia Citrina Extract

3.5

A marine-sourced oil with antioxidant potential, but research is limited and sustainability concerns exist.

Irritation

low

Source

natural

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Antioxidant

Black Tea Ferment

Saccharomyces/Xylinum/Black Tea Ferment

4.2

A gentle, fermented ingredient that offers antioxidant protection and mild exfoliation, ideal for most skin types.

Irritation

low

Source

biotech

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Antioxidant

Black Truffle Oil

Tuber Melanosporum Whole Plant Oil

4.0

A rare, antioxidant-rich oil that may help protect skin from environmental stress, but research is still emerging.

Irritation

low

Source

natural

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Antioxidant

Blackberry & Raspberry Extract

RUBUS FRUTICOSUS/IDAEUS EXTRACT

4.0

A gentle, antioxidant-rich fruit extract that helps protect skin from environmental stress and may soothe minor irritation.

Irritation

low

Source

natural

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Antioxidant

Blackberry Fruit Extract

Rubus Villosus Fruit Extract

4.0

Blackberry fruit extract is a gentle, antioxidant-rich ingredient that helps protect skin from environmental stress and may support a more even tone.

Irritation

low

Source

natural

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Skin Conditioning Agent

Blackberry Fruit Water

Rubus Fruticosus Fruit Water

3.5

A gentle, antioxidant-rich water that adds light hydration and a subtle botanical touch to skincare, but its benefits are mild compared to more concentrated extracts.

Irritation

low

Source

natural

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Antioxidant

Blackberry Leaf Cell Extract

RUBUS FRUTICOSUS LEAF CELL EXTRACT

3.8

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

Irritation

low

Source

natural

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Antioxidant

Blackberry Leaf Extract

RUBUS VILLOSUS LEAF EXTRACT

4.0

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

Irritation

low

Source

natural

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Antioxidant

Blackberry Root Extract

Rubus Villosus Root 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

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Antioxidant

Blackcurrant Callus Powder

RIBES NIGRUM CALLUS POWDER

4.0

A gentle, antioxidant-rich plant powder that may help protect skin from environmental stress and support a more even tone.

Irritation

low

Source

natural

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Skin-Conditioning Agent

Blackcurrant Fruit Water

RIBES NIGRUM FRUIT WATER

4.0

Blackcurrant Fruit Water is a gentle, antioxidant-rich ingredient that hydrates and soothes skin, but its benefits are largely from natural fruit compounds rather than a single active.

Irritation

low

Source

natural

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Antioxidant

Blackcurrant Leaf Extract

RIBES NIGRUM LEAF EXTRACT

4.0

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

Irritation

low

Source

natural

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Antioxidant

Blackcurrant Leaf Oil

RIBES NIGRUM LEAF OIL

4.0

A gentle, antioxidant-rich botanical oil that adds a subtle herbal scent and skin-soothing benefits.

Irritation

low

Source

natural

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Antioxidant

Blackthorn Fruit Extract

Pyrus spinosa 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

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Antioxidant

Blechnum Discolor Leaf Extract

Blechnum Discolor Leaf Extract

3.8

A gentle, antioxidant-rich fern 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

Bleeding Heart Flower Extract

Dicentra Spectabilis Flower Extract

3.5

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

Irritation

low

Source

natural

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Antioxidant

Blue Lotus Flower Extract

NYMPHAEA COERULEA FLOWER EXTRACT

3.8

Blue lotus flower 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

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Antioxidant

Blue Lotus Leaf Cell Extract

Nymphaea Coerulea Leaf Cell 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

Blue Lotus Seed Extract

NYMPHAEA CAERULEA SEED EXTRACT

3.8

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

Irritation

low

Source

natural

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Antioxidant

Bluebeard Extract

CARYOPTERIS INCANA FLOWER/LEAF/STEM EXTRACT

3.8

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

Irritation

low

Source

natural

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Antioxidant

Bluebeard Seed Extract

Caryopteris Incana Seed Extract

3.5

A gentle plant extract with antioxidant potential, but research is still limited—think of it as a supportive ingredient rather than a star player.

Irritation

low

Source

natural

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Antioxidant

Bluebell Seed Extract

Hyacinthoides Non-Scripta Seed Extract

3.5

A gentle botanical extract with antioxidant potential, but research is limited and it's rarely used as a standalone active.

Irritation

low

Source

natural

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Antioxidant

Blueberry Callus Extract

VACCINIUM VIRGATUM CALLUS EXTRACT

4.0

A gentle, antioxidant-rich plant stem cell extract that helps protect skin from environmental stress, though research is still emerging.

Irritation

low

Source

natural

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Antioxidant

Blueberry Ferment Filtrate

LACTOBACILLUS/LEUCONOSTOC/BLUEBERRY FRUIT EXTRACT FERMENT FILTRATE

4.0

A fermented blueberry extract that may provide antioxidant protection and gentle enzymatic exfoliation, but research is still emerging.

Irritation

low

Source

biotech

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Antioxidant

Blueberry Fruit Extract

Vaccinium Corymbosum Fruit Extract

4.2

Blueberry fruit extract is a gentle antioxidant that helps protect skin from environmental stress and may support a more even tone.

Irritation

low

Source

natural

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Antioxidant

Blueberry Fruit Juice

VACCINIUM VIRGATUM FRUIT JUICE

4.0

Blueberry fruit juice is a gentle, antioxidant-rich ingredient that helps protect skin from environmental stress and adds a touch of natural nourishment.

Irritation

low

Source

natural

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Antioxidant

Blueberry Fruit Water

Vaccinium Corymbosum (Blueberry) Fruit Water

3.8

Blueberry Fruit Water is a gentle, antioxidant-rich hydrator that adds a touch of skin-soothing benefits, but it's not a powerhouse ingredient on its own.

Irritation

low

Source

natural

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