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 1,342
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

Emulsifier

Polyglyceryl-10 Tricocoate

Polyglyceryl-10 Tricocoate

4.5

A mild, coconut-derived emulsifier that stabilizes formulas and leaves skin feeling soft without clogging pores.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-10 Tridecanoate

Polyglyceryl-10 Tridecanoate

4.5

A mild, non-irritating emulsifier that helps create stable, creamy textures without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-10 Trierucate

Polyglyceryl-10 Trierucate

4.2

A mild, multi-functional emulsifier that stabilizes formulas and leaves skin feeling soft without clogging pores.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-10 Trilaurate

Polyglyceryl-10 Trilaurate

4.5

A mild, non-irritating emulsifier that helps create stable, lightweight creams and lotions without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-10 Trioleate

Polyglyceryl-10 Trioleate

4.2

A mild, plant-derived emulsifier that helps create stable, creamy formulas without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-10 Undecylenate

Polyglyceryl-10 Undecylenate

4.3

A mild, multi-tasking ingredient that helps blend oil and water while offering gentle antimicrobial support, ideal for sensitive and natural skincare.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Caprate

Polyglyceryl-2 Caprate

4.5

A gentle, non-irritating emulsifier that helps create stable, lightweight textures without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Caprylate

POLYGLYCERYL-2 CAPRYLATE

4.5

A mild, plant-derived emulsifier that helps mix oil and water in skincare, with a low risk of irritation and clogged pores.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Diisostearate

POLYGLYCERYL-2 DIISOSTEARATE

4.3

A mild, plant-derived emulsifier that helps create stable, creamy textures without common irritation concerns.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Dioleate

POLYGLYCERYL-2 DIOLEATE

4.5

A mild, plant-derived emulsifier that creates stable, creamy textures without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Distearate

Polyglyceryl-2 Distearate

4.5

A mild, plant-derived emulsifier that creates stable, silky creams without common irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Isopalmitate

POLYGLYCERYL-2 ISOPALMITATE

4.0

A mild, skin-friendly emulsifier that creates stable, lightweight creams and lotions without common irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Lanolin Alcohol Ether

POLYGLYCERYL-2 LANOLIN ALCOHOL ETHER

4.0

A mild, lanolin-derived emulsifier that helps blend oil and water in creams and lotions without the irritation potential of traditional lanolin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Laurate

Polyglyceryl-2 Laurate

4.5

A gentle, plant-derived emulsifier that helps create stable, lightweight formulas without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Myristate

Polyglyceryl-2 Myristate

4.3

A gentle, non-irritating emulsifier that creates stable, lightweight formulas without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Oleate

Polyglyceryl-2 Oleate

4.2

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

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Palmitate

POLYGLYCERYL-2 PALMITATE

4.2

A mild, plant-derived emulsifier that helps create stable, creamy formulas without common irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 PEG-4 Stearate

POLYGLYCERYL-2 PEG-4 STEARATE

4.0

A mild, PEG-containing emulsifier that helps create smooth, stable creams and lotions with a pleasant feel.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Polyglyceryl-2 Sesquioleate

POLYGLYCERYL-2 SESQUIOLEATE

4.0

A mild, plant-derived emulsifier that helps create stable, creamy textures without common irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Stearate

Polyglyceryl-2 Stearate

4.3

A gentle, PEG-free emulsifier that creates stable, creamy textures without common irritants.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Tetraisostearate

Polyglyceryl-2 Tetraisostearate

4.0

A mild, plant-derived emulsifier that stabilizes formulas without stripping the skin — ideal for sensitive and dry skin types.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Tetraoleate

Polyglyceryl-2 Tetraoleate

4.0

A mild, plant-derived emulsifier that helps create stable, non-greasy lotions and creams without irritating the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-2 Tetrastearate

POLYGLYCERYL-2 TETRASTEARATE

4.3

A mild, plant-derived emulsifier that helps create smooth, stable creams and lotions with a low risk of irritation.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Polyglyceryl-25/Caprolactone

Polyglyceryl-25/Caprolactone

4.0

A mild, biodegradable emulsifier that helps create smooth, stable lotions and creams with a light feel.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Beeswax

POLYGLYCERYL-3 BEESWAX

4.5

A mild, non-irritating emulsifier that creates stable, creamy textures without harsh chemicals.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Behenate

POLYGLYCERYL-3 BEHENATE

4.5

A gentle, plant-based emulsifier that creates stable, creamy textures without common irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Caprate

Polyglyceryl-3 Caprate

4.5

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

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Polyglyceryl-3 Caprylate

Polyglyceryl-3 Caprylate

4.5

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

Irritation

low

Source

semi-synthetic

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Emulsifier

Polyglyceryl-3 Cocoate

Polyglyceryl-3 Cocoate

4.5

A mild, coconut-derived emulsifier that creates stable, silky textures without stripping the skin.

Irritation

low

Source

semi-synthetic

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