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

Antioxidant

Beech Seed Extract

Fagus Sylvatica Seed Extract

3.8

A gentle antioxidant extract from beech seeds that may help calm and protect skin, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Beech Tree Shell Extract

Fagus Sylvatica Shell Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Beer Extract

BEER

3.5

Beer extract may offer antioxidant and soothing benefits, but research is limited and it's not a standout ingredient.

Irritation

low

Source

natural

beautyskincareantioxidant
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Emollient

Beeswax

CERA ALBA

4.3

Beeswax is a gentle, natural ingredient that helps lock in moisture and create a protective film on the skin without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

Beet Leaf Powder

Beta Vulgaris Leaf Powder

3.5

Beet leaf powder is a gentle, antioxidant-rich botanical ingredient that may help soothe and protect skin, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Humectant

Beet Root Juice

Beta Vulgaris Root Juice

4.0

Beet root juice is a gentle, hydrating ingredient with antioxidant benefits, but its bright red color can stain fabrics and skin temporarily.

Irritation

low

Source

natural

beautyskincarehumectant
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Antioxidant

Beet Sprout Extract

Beta Vulgaris Sprout Extract

4.0

Beet sprout extract is a gentle, plant-based antioxidant that may help shield skin from pollution and UV damage, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Beetroot Extract

Beta Vulgaris Root Extract

4.0

Beetroot extract is a gentle, antioxidant-rich ingredient that helps protect skin from environmental stress and may support a healthy glow.

Irritation

low

Source

natural

beautyskincareantioxidant
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Colorant

Beetroot Powder

Beta Vulgaris Root Powder

3.8

Beetroot powder adds a natural pink-red tint and provides mild antioxidant benefits, but its color can be unstable and may stain fabrics or skin temporarily.

Irritation

low

Source

natural

beautyskincarecolorant
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Antistatic Agent

Behenalkonium Chloride

Behenalkonium Chloride

3.5

Behenalkonium chloride is a gentle conditioning agent that helps reduce static and soften hair, but it can be irritating to sensitive skin or eyes in high concentrations.

Irritation

moderate

Source

synthetic

beautyskincarehaircare
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Viscosity Controlling

Behenamide

Behenamide

3.8

Behenamide is a safe, synthetic thickener that helps create a smooth, creamy texture in skincare and haircare products.

Irritation

low

Source

synthetic

beautyskincarehaircare
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Surfactant

Behenamide DEA

Behenamide DEA

3.5

Behenamide DEA helps create rich lather and thick texture in cleansers, but it has moderate irritation potential and environmental concerns.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Viscosity Controlling

Behenamide MEA

Behenamide MEA

3.5

Behenamide MEA is a mild thickening and foaming agent that helps create a rich lather in cleansers, but it offers no direct skin benefit.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Antistatic Agent

Behenamidoethyl Diethylamine

BEHENAMIDOETHYL DIETHYLAMINE

3.8

A gentle conditioning agent that helps soften hair and skin without heavy buildup, but may not suit very sensitive scalps.

Irritation

low

Source

synthetic

beautyskincarehaircareconditioning agent
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Surfactant

Behenamidopropyl Betaine

Behenamidopropyl Betaine

4.0

A gentle, coconut-derived surfactant that helps create rich foam and a silky feel in cleansers and conditioners, with low irritation potential.

Irritation

low

Source

semi-synthetic

beautyskincarehaircaresurfactant
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Conditioning Agent

Behenamidopropyl Dimethylamine

BEHENAMIDOPROPYL DIMETHYLAMINE

4.0

A gentle, effective conditioning ingredient that softens hair and skin without heavy buildup.

Irritation

low

Source

semi-synthetic

beautyskincarehaircareconditioning agent
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Hair Conditioning Agent

Behenamidopropyl Dimethylamine Lactate

BEHENAMIDOPROPYL DIMETHYLAMINE LACTATE

4.0

A gentle, effective hair conditioner that mimics natural lipids, offering slip and softness without the weight of silicones.

Irritation

low

Source

semi-synthetic

beautyhaircareconditioning agent
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Antistatic Agent

Behenamidopropyltrimonium Methosulfate

BEHENAMIDOPROPYLTRIMONIUM METHOSULFATE

4.5

A mild, effective hair conditioner that detangles and softens without the heavy buildup of traditional silicones or quats.

Irritation

low

Source

semi-synthetic

beautyhaircareconditioning agent
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Surfactant

Behenamine Oxide

Behenamine Oxide

3.8

Behenamine Oxide is a gentle surfactant that helps create rich lather and stabilize formulas, but it's less common in modern 'clean' beauty due to its synthetic origin.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Emulsifier

Beheneth-10

Beheneth-10

4.0

Beheneth-10 is a gentle, synthetic emulsifier that helps mix oil and water in products, making it a safe choice for most skin types, including sensitive skin.

Irritation

low

Source

synthetic

beautyskincaresurfactantemulsifier
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Emulsifier

Beheneth-15

BEHENETH-15

4.0

Beheneth-15 is a gentle synthetic emulsifier that helps oil and water mix in creams and lotions, with a low risk of irritation.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

Beheneth-2

Beheneth-2

4.0

Beheneth-2 is a gentle emulsifier that helps creamy products stay smooth and stable, with a very low risk of irritation.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Beheneth-20

Beheneth-20

4.0

A gentle, non-drying emulsifier that helps create stable, creamy formulas without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Beheneth-25

BEHENETH-25

4.0

Beheneth-25 is a gentle, non-irritating emulsifier that helps cleanse without stripping the skin, making it a solid choice for sensitive skin formulas.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Beheneth-30

BEHENETH-30

4.0

Beheneth-30 is a mild, low-irritation emulsifier that helps mix oil and water in cleansers and creams, making it a good choice for sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Beheneth-30 Phosphate

BEHENETH-30 PHOSPHATE

4.0

Beheneth-30 Phosphate is a gentle, synthetic surfactant that effectively cleanses and helps mix oil and water without stripping the skin.

Irritation

low

Source

synthetic

beautyskincarecleansingemulsifier
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Emulsifier

Beheneth-5

BEHENETH-5

3.8

Beheneth-5 is a gentle synthetic emulsifier that helps oil and water mix, making creams and lotions feel smooth without heavy irritation.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Emollient

Behenic Acid

Behenic Acid

4.0

A gentle, plant-derived fatty acid that helps thicken formulas and soften skin without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Behenoxy Dimethicone

Behenoxy Dimethicone

4.0

A gentle silicone that smooths and softens skin without clogging pores, ideal for dry or sensitive types.

Irritation

low

Source

synthetic

beautyskincareemollient
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Skin Conditioning Agent

Behenoyl Stearic Acid

Behenoyl Stearic Acid

3.5

Behenoyl Stearic Acid is a gentle synthetic ingredient that helps condition skin and stabilize emulsions, but it is not a standout active.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Antistatic Agent

Behentrimonium Chloride

Behentrimonium Chloride

4.2

A gentle, effective conditioning ingredient that detangles hair and reduces static without heavy buildup.

Irritation

low

Source

synthetic

beautyskincarehaircare
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Conditioning Agent

Behentrimonium Methosulfate

Behentrimonium Methosulfate

4.5

A gentle, plant-derived conditioning ingredient that softens hair and skin without the heavy buildup or irritation of older quaternary ammonium compounds.

Irritation

low

Source

semi-synthetic

beautyskincarehaircareconditioning agent
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Emollient

Behenyl Alcohol

BEHENYL ALCOHOL

4.5

Behenyl alcohol is a gentle, plant-derived fatty alcohol that thickens and stabilizes formulas without clogging pores or irritating skin.

Irritation

low

Source

natural

beautyskincareemollientthickener
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Emollient

Behenyl Beeswax

Behenyl Beeswax

4.0

Behenyl Beeswax is a gentle, plant-derived wax that helps thicken and stabilize formulas without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Behenyl Behenate

Behenyl Behenate

4.2

Behenyl behenate is a gentle, plant-based wax that gives products a smooth, creamy texture without clogging pores or causing irritation.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Behenyl Benzoate

Behenyl Benzoate

4.0

A gentle, non-greasy emollient that improves product feel and spreadability without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Surfactant

Behenyl Betaine

Behenyl Betaine

4.3

A mild, conditioning surfactant that cleans without stripping, making it ideal for sensitive skin and dry hair.

Irritation

low

Source

semi-synthetic

beautyskincarehaircaresurfactant
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Emollient

Behenyl Dimer Dilinoleate Complex

BEHENYL/DIMER DILINOLEYL/GLYCERYL/PHYTOSTERYL DIMER DILINOLEATE

4.0

A gentle, plant-based emollient that helps soften and smooth skin without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Behenyl Dimethicone

BEHENYL DIMETHICONE

4.3

A gentle silicone that improves product feel and spreadability, suitable for most skin types including sensitive skin.

Irritation

low

Source

synthetic

beautyskincarehaircare
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Emollient

Behenyl Erucate

BEHENYL ERUCATE

4.0

A gentle, plant-based emollient that helps lock in moisture and leaves skin feeling soft without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Behenyl Isostearate

Behenyl Isostearate

4.0

A gentle, plant-derived emollient that softens skin and gives a silky feel to creams and lip products without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Film Former

Behenyl Methacrylate Copolymer

BEHENYL METHACRYLATE/PERFLUOROOCTYLETHYL METHACRYLATE COPOLYMER

3.5

A synthetic film-former that helps products stay put longer, especially in water-resistant sunscreens and long-wear makeup.

Irritation

low

Source

synthetic

beautyskincarefilm-former
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Emollient

Behenyl Olivate

Behenyl Olivate

4.3

A gentle, plant-based emollient that softens skin and improves product texture without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Humectant

Behenyl PCA

Behenyl PCA

4.0

Behenyl PCA is a gentle, moisturizing ingredient that helps improve skin hydration and softness without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
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Emollient

Behenyl/Isostearyl Beeswax

BEHENYL/ISOSTEARYL BEESWAX

4.0

A gentle, plant-friendly wax alternative that helps create smooth, stable textures in balms and creams.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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