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 20,769
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

Emollient

Black Currant Bud Wax

RIBES NIGRUM BUD WAX

4.0

A natural, plant-based wax that adds structure and a silky feel to balms and creams without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Colorant

Black Iron Oxide

CI 27755

3.5

A safe, widely used black pigment that adds color to makeup and skincare without active skincare benefits.

Irritation

low

Source

natural

beautyskincarecolorant
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Soothing Agent

Black Knapweed Extract

CENTAUREA NIGRA EXTRACT

3.8

A gentle botanical extract with soothing and antioxidant potential, though research is still emerging.

Irritation

low

Source

natural

beautyskincarebotanical extract
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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Fragrance

Black Locust Flower Water

Robinia Pseudoacacia Flower Water

3.5

A gentle, lightly fragrant flower water that adds a subtle floral note and mild soothing feel, but lacks strong research backing for specific skin benefits.

Irritation

low

Source

natural

beautyskincarebotanical extract
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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Exfoliant

Black Mustard Seed Powder

Brassica Nigra Seed Powder

3.8

A natural physical exfoliant that sloughs off dead skin cells, but may be too abrasive for sensitive or acne-prone skin.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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Exfoliant

Black Pepper Fruit Powder

Piper Nigrum Fruit Powder

3.8

A natural, gritty powder that physically exfoliates skin but can be irritating for sensitive or broken skin due to its spice content.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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Fragrance

Black Pine Twig Leaf Oil

Pinus Nigra Twig Leaf Oil

3.5

A fragrant essential oil with some antimicrobial potential, but may irritate sensitive skin due to its high content of volatile compounds.

Irritation

moderate

Source

natural

beautyskincarefragrance
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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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Emollient

Black Raspberry Seed Oil

Rubus Occidentalis Seed Oil

4.3

A lightweight, antioxidant-rich oil that hydrates without clogging pores, ideal for normal to dry skin types.

Irritation

low

Source

natural

beautyskincareemollient
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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

beautyskincareantioxidant
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Fragrance

Black Spruce Branch/Leaf Oil

Picea mariana branch/leaf oil

3.8

Black spruce oil adds a grounding, forest-like scent to products and may offer mild antioxidant benefits, but its essential oil nature means it can be irritating for sensitive skin.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Fragrance

Black Spruce Leaf Oil

Picea mariana leaf oil

4.0

Black Spruce Leaf Oil adds a grounding, forest-like scent to skincare and may offer mild antioxidant and soothing benefits, but as an essential oil it can be irritating for sensitive skin.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Humectant

Black Strap Powder

Saccharum officinarum (Sugar Cane) Extract

3.8

Black Strap Powder is a natural sugar cane derivative that hydrates and gently exfoliates, but its high sugar content may not suit all skin types.

Irritation

low

Source

natural

beautyskincarehumectant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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Astringent

Black Walnut Bark Extract

Juglans Nigra Bark Extract

3.5

A natural astringent that may help tone oily skin, but can be irritating for sensitive types and lacks strong clinical backing.

Irritation

moderate

Source

natural

beautyskincareastringent
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Astringent

Black Walnut Leaf Extract

Juglans Nigra Leaf Extract

3.5

Black Walnut Leaf Extract offers antioxidant and astringent benefits, but its use is limited by moderate irritation potential and a lack of strong clinical evidence.

Irritation

moderate

Source

natural

beautyskincarebotanical
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Exfoliant

Black Walnut Shell Extract

Juglans Nigra Shell Extract

3.5

A natural physical exfoliant from walnut shells, effective for sloughing off dead skin but can be too harsh for sensitive or acne-prone skin.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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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Exfoliant

Blackberry Seed

Rubus Fruticosus Seed

3.8

Blackberry seed provides gentle physical exfoliation and skin-softening fatty acids, but its small particle size may feel gritty for some.

Irritation

low

Source

natural

beautyskincareexfoliant
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Emollient

Blackberry Seed Oil

Rubus Glaucus Seed Oil

4.0

A lightweight, antioxidant-rich oil that helps nourish and protect the skin without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Blackcurrant Bud Oil

RIBES NIGRUM BUD OIL

4.0

A nourishing, antioxidant-rich oil from blackcurrant buds that helps soften and protect the skin without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Blackcurrant Bud Wax

RIBES NIGRUM BUD CERA

4.0

A gentle, plant-derived wax that helps lock in moisture and gives products a smooth, non-greasy feel.

Irritation

low

Source

natural

beautyskincareemollient
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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Soothing Agent

Blackcurrant Leaf Water

RIBES NIGRUM LEAF WATER

4.0

A mild, antioxidant-rich botanical water that can help soothe and refresh the skin without irritation.

Irritation

low

Source

natural

beautyskincaresoothing
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Emollient

Blackcurrant Seed Oil

RIBES NIGRUM FRUIT OIL

4.3

Blackcurrant Seed Oil is a gentle, nourishing oil rich in omega fatty acids and antioxidants, ideal for dry or sensitive skin.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

Blackhaw Viburnum Extract

VIBURNUM PRUNIFOLIUM 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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Soothing agent

Blackthorn Flower Water

Prunus Spinosa Flower Water

3.8

A mild, fragrant floral water that can add a touch of soothing refreshment to skincare, but its benefits are largely anecdotal and not backed by strong research.

Irritation

low

Source

natural

beautyskincaresoothing
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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

beautyskincareantioxidant
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Astringent

Blackthorn Wood Extract

PRUNUS SPINOSA WOOD EXTRACT

3.8

A gentle botanical extract with mild astringent and antioxidant benefits, best for normal to oily skin types.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Humectant

Bladderwrack Extract

Fucus Vesiculosus Extract

4.0

A gentle seaweed extract that hydrates and soothes skin, but its benefits are mostly anecdotal and backed by limited clinical research.

Irritation

low

Source

natural

beautyskincarehumectant
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Emollient

Bladderwrack Oil

Fucus Vesiculosus Thalle Oil

4.0

A gentle, nutrient-packed seaweed oil that hydrates and protects skin without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Soothing agent

Bladderwrack Powder

Fucus vesiculosus powder

3.8

Bladderwrack powder is a gentle seaweed ingredient that can help soothe and condition the skin, but it is not a proven treatment for any skin condition.

Irritation

low

Source

natural

beautyskincaresoothing agent
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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Soothing Agent

Blessed Thistle Extract

Cnicus Benedictus Extract

3.8

Blessed Thistle Extract is a gentle botanical with antioxidant and soothing potential, but research on its cosmetic benefits is still emerging.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Bletia Hyacinthina Bulb Extract

BLETIA HYACINTHINA BULB EXTRACT

3.5

A gentle orchid bulb extract with antioxidant potential, but research is limited and benefits are not well-established.

Irritation

low

Source

natural

beautyskincarebotanical extract
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