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

Ceteth-10 Stearate

CETETH-10 STEARATE

4.0

Ceteth-10 Stearate is a gentle emulsifier that helps create stable, creamy textures in skincare products with a low risk of irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Ceteth-14

CETETH-14

3.8

Ceteth-14 is a gentle emulsifier that helps oil and water mix in skincare products, with a low risk of irritation or clogged pores.

Irritation

low

Source

semi-synthetic

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Emulsifier

Ceteth-17

CETETH-17

3.5

Ceteth-17 is a gentle synthetic emulsifier that helps keep your skincare products stable and creamy, but it's not a star active ingredient.

Irritation

low

Source

synthetic

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Emulsifier

Ceteth-2

CETETH-2

3.8

Ceteth-2 is a gentle emulsifier that helps mix water and oil in your skincare products, but it's not a star active ingredient.

Irritation

low

Source

semi-synthetic

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Emulsifier

Ceteth-24

CETETH-24

4.0

A gentle, synthetic emulsifier that helps water and oil mix in your skincare, with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emulsifier

Ceteth-3 Stearate

CETETH-3 STEARATE

4.0

A reliable emulsifier that helps create stable, creamy textures with a low risk of irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Ceteth-4 Stearate

CETETH-4 STEARATE

4.0

A reliable emulsifier that keeps creams smooth and stable, with a low risk of irritation or clogged pores.

Irritation

low

Source

semi-synthetic

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Emulsifier

Ceteth-45

CETETH-45

4.0

Ceteth-45 is a mild synthetic emulsifier that helps blend oil and water in products, making it a reliable choice for stable, creamy formulations.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

Ceteth-5 Stearate

CETETH-5 STEARATE

4.0

A gentle emulsifier that helps create stable, creamy textures without common irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Ceteth-7 Stearate

CETETH-7 STEARATE

4.0

Ceteth-7 Stearate is a reliable synthetic emulsifier that keeps creams and lotions stable and smooth, with a low risk of irritation for most skin types.

Irritation

low

Source

synthetic

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Emulsifier

Ceteth-9 Stearate

CETETH-9 STEARATE

3.8

Ceteth-9 Stearate is a reliable synthetic emulsifier that helps create stable, creamy textures, but it may not be ideal for those avoiding ethoxylated ingredients.

Irritation

low

Source

synthetic

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Emulsifier

Cetoleth-4

CETOLETH-4

4.0

Cetoleth-4 is a gentle emulsifier that helps water and oil mix in creams and cleansers, with a low risk of irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Cetyl PEG-8 Dimethicone

Cetyl PEG-8 Dimethicone

4.0

A gentle silicone emulsifier that improves texture and stability without clogging pores.

Irritation

low

Source

semi-synthetic

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Emulsifier

Cetyl Phosphate

Cetyl Phosphate

4.2

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

Irritation

low

Source

synthetic

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Emulsifier

Choleth-10

CHOLETH-10

4.0

Choleth-10 is a mild, cholesterol-based emulsifier that helps create stable, creamy formulas while also supporting the skin's natural barrier.

Irritation

low

Source

semi-synthetic

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Emulsifier

Choleth-15

CHOLETH-15

3.5

Choleth-15 is a gentle emulsifier that helps blend water and oil in skincare, but it's rarely used alone and is best understood as a formulation helper.

Irritation

low

Source

semi-synthetic

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Emulsifier

Choleth-20

CHOLETH-20

3.8

Choleth-20 is a mild, cholesterol-based emulsifier that helps blend water and oil in creams and lotions without significant irritation or clogging concerns.

Irritation

low

Source

semi-synthetic

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Emulsifier

Choleth-24

CHOLETH-24

3.8

Choleth-24 is a mild, cholesterol-based emulsifier that helps blend water and oil in creams and lotions, with a low risk of irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Choleth-30

CHOLETH-30

4.0

Choleth-30 is a mild, cholesterol-based emulsifier that helps blend oil and water in skincare products while leaving a smooth, non-greasy feel.

Irritation

low

Source

semi-synthetic

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Emulsifier

Choleth-5

CHOLETH-5

4.0

Choleth-5 is a mild emulsifier that helps oil and water mix in your skincare products, with a low risk of irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Citrol

Citrol

3.0

Citrol is a poorly defined ingredient name; it may refer to a citrus oil blend or an emulsifier, but lacks clear safety data and should be approached with caution.

Irritation

moderate

Source

mixed

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Emulsifier

Coconut Oil PEG-10 Esters

COCONUT OIL PEG-10 ESTERS

4.0

A gentle emulsifier that helps mix oil and water, making cleansers and creams feel smooth without heavy residue.

Irritation

low

Source

semi-synthetic

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Emulsifier

Coconut Oil PPG-2-PEG-6 Esters

COCONUT OIL PPG-2-PEG-6 ESTERS

4.0

A gentle, semi-synthetic emulsifier derived from coconut oil that helps blend water and oil in formulas without clogging pores.

Irritation

low

Source

semi-synthetic

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Emulsifier

Corn Oil Glycereth-8 Esters

CORN OIL GLYCERETH-8 ESTERS

4.0

A mild, corn-derived emulsifier that helps create stable, non-greasy lotions and creams with good skin feel.

Irritation

low

Source

semi-synthetic

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Emulsifier

Corn Oil PEG-6 Esters

CORN OIL PEG-6 ESTERS

4.0

A gentle emulsifier that helps mix oil and water, making cleansers and creams feel smooth without heavy residue.

Irritation

low

Source

semi-synthetic

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Emulsifier

Cupuacu Seedate

Sorbitan Theobroma Grandiflorum Seedate

4.0

A gentle, plant-based emulsifier that helps stabilize creams and leaves skin feeling soft without clogging pores.

Irritation

low

Source

natural

beautyskincareemulsifier
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Emulsifier

Cyclodextrin Laurate

Cyclodextrin Laurate

4.0

A gentle, starch-based ingredient that helps stabilize and deliver active ingredients without irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

DATEM

DIACETYL TARTARIC ACID ESTERS OF MONO- AND DIGLYCERIDES

3.0

DATEM is a functional emulsifier that helps stabilize cosmetic formulas, but it offers no direct skin benefit and is rarely a primary ingredient.

Irritation

low

Source

semi-synthetic

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Emulsifier

Decyltetradeceth-200 Behenate

DECYLTETRADECETH-200 BEHENATE

4.0

A gentle, high-performance emulsifier that helps create stable, luxurious creams without common irritation concerns.

Irritation

low

Source

semi-synthetic

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Emulsifier

Decyltetradeceth-200 Isostearate

DECYLTETRADECETH-200 ISOSTEARATE

4.0

A gentle, high-performance emulsifier that helps create stable, creamy textures without common irritation concerns.

Irritation

low

Source

semi-synthetic

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Emulsifier

Decyltetradeceth-25

DECYLTETRADECETH-25

3.8

A gentle synthetic emulsifier that helps create stable, creamy textures without common irritation concerns.

Irritation

low

Source

synthetic

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Emulsifier

Decyltetradeceth-30

DECYLTETRADECETH-30

4.0

A mild, effective emulsifier that helps water and oil mix without stripping the skin, making it a good choice for sensitive skin formulas.

Irritation

low

Source

synthetic

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Emulsifier

Decyltetradeceth-5

DECYLTETRADECETH-5

4.0

A gentle synthetic emulsifier that helps mix water and oil in skincare products without common irritation.

Irritation

low

Source

synthetic

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Emulsifier

Dextrin Isostearate

DEXTRIN ISOSTEARATE

4.0

A gentle, plant-based emulsifier that improves product texture and stability with a low risk of irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dextrin Laurate

Dextrin Laurate

4.3

A mild, effective emulsifier that helps create stable, creamy textures without common irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dextrin Myristate

Dextrin Myristate

4.0

A mild, starch-derived emulsifier that improves product feel and stability without common irritation concerns.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dextrin Palmitate

Dextrin Palmitate

4.0

A gentle, starch-derived ingredient that improves product feel and stability without common irritation concerns.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dextrin Stearate

Dextrin Stearate

4.0

A gentle, plant-based emulsifier that gives creams a silky feel without clogging pores or irritating skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Dicetyl Phosphate

Dicetyl Phosphate

4.0

Dicetyl Phosphate is a gentle emulsifier that helps create stable, creamy textures in skincare without common irritation.

Irritation

low

Source

synthetic

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Emulsifier

Diethylaminoethyl PEG-5 Cocoate

DIETHYLAMINOETHYL PEG-5 COCOATE

3.8

A mild, coconut-derived conditioning agent that helps products spread evenly and leaves hair feeling soft without heavy buildup.

Irritation

low

Source

semi-synthetic

beautyskincarehaircareemulsifier
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Emulsifier

Diethylaminoethyl PEG-5 Laurate

DIETHYLAMINOETHYL PEG-5 LAURATE

3.5

A gentle emulsifier that helps blend oil and water in skincare products, but its synthetic nature and limited research may give some pause.

Irritation

low

Source

semi-synthetic

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Emulsifier

Diglyceryl Stearate Malate

DIGLYCERYL STEARATE MALATE

4.3

A mild, non-irritating emulsifier that helps create stable, creamy textures while also softening the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dihydrocholeth-15

Dihydrocholeth-15

3.5

A gentle emulsifier that helps blend oil and water in formulas, with mild skin-conditioning benefits.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dihydrocholeth-30

Dihydrocholeth-30

4.0

A gentle emulsifier that helps blend water and oil in formulas, with a structure similar to skin-friendly cholesterol.

Irritation

low

Source

semi-synthetic

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Emulsifier

Diisostearyl Lauroyl Glutamate

DIISOSTEARYL LAUROYL GLUTAMATE

4.3

A mild, amino-acid-based emulsifier that helps blend oil and water in creams and lotions while leaving skin feeling soft and smooth.

Irritation

low

Source

semi-synthetic

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Emulsifier

Diisotridecyl Lauroyl Glutamate

DIISOTRIDECYL LAUROYL GLUTAMATE

4.3

A mild, amino-acid-derived emulsifier that helps create stable, creamy textures with very low irritation potential.

Irritation

low

Source

semi-synthetic

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