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

Dimethicone PEG-3 Laurate

DIMETHICONE PEG-3 LAURATE

3.8

A gentle silicone emulsifier that improves texture and stability, but may not suit those avoiding silicones or ethoxylated ingredients.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dimethicone PEG-7 Olivate

DIMETHICONE PEG-7 OLIVATE

4.0

A gentle silicone emulsifier that helps create smooth, stable formulas while adding a light, non-greasy feel.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dimethicone PEG-7 Phosphate

DIMETHICONE PEG-7 PHOSPHATE

4.0

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

Irritation

low

Source

semi-synthetic

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Emulsifier

Dimethicone PEG-7 Phthalate

Dimethicone PEG-7 Phthalate

3.5

A silicone-based emulsifier that helps formulas feel smooth and spread easily, but its phthalate component raises unnecessary concern despite being chemically different from controversial phthalates.

Irritation

low

Source

synthetic

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Emulsifier

Dimethicone PEG-7 Undecylenate

DIMETHICONE PEG-7 UNDECYLENATE

4.0

A gentle silicone emulsifier that helps products spread smoothly and feel silky, with very low irritation potential.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dimethicone PEG-8 Laurate

Dimethicone PEG-8 Laurate

3.5

A silicone emulsifier that helps mix oil and water, but may not suit everyone due to its synthetic nature and potential for buildup.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dimethicone PEG-8 Olivate

DIMETHICONE PEG-8 OLIVATE

4.0

A gentle silicone emulsifier that helps create smooth, stable formulas without heavy residue.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dimethicone PEG-8 Phosphate

DIMETHICONE PEG-8 PHOSPHATE

4.0

A gentle silicone emulsifier that helps create stable, lightweight formulas without clogging pores.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dimethicone PEG/PPG-7/4 Phosphate

DIMETHICONE PEG/PPG-7/4 PHOSPHATE

4.0

A gentle silicone emulsifier that helps mix water and oil in products, but may not suit those avoiding silicones or PEG compounds.

Irritation

low

Source

semi-synthetic

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Emulsifier

Dimethyl Stearamine

Dimethyl Stearamine

3.5

An effective emulsifier and hair conditioner, but may cause irritation or clog pores in sensitive individuals.

Irritation

moderate

Source

synthetic

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Emulsifier

Dimethyl Tallowamine

Dimethyl Tallowamine

2.5

An old-school emulsifier from animal fat that can be effective but may cause irritation and is rarely used in modern clean beauty.

Irritation

moderate

Source

natural

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Emulsifier

Dimyristyl Phosphate

Dimyristyl Phosphate

4.0

A gentle synthetic emulsifier that helps blend oil and water in creams and lotions, with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emulsifier

Dipalmitamine

Dipalmitamine

3.5

Dipalmitamine is a gentle synthetic ingredient that helps condition hair and stabilize formulas, but it's not a star active.

Irritation

low

Source

synthetic

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Surfactant

Disodium Stearoyl Glutamate

Disodium Stearoyl Glutamate

4.5

A mild, amino-acid-based surfactant that cleanses without stripping the skin, making it ideal for sensitive and dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansingemulsifier
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Emulsifier

Distearyl Lauroyl Glutamate

DISTEARYL LAUROYL GLUTAMATE

4.3

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

Irritation

low

Source

semi-synthetic

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Emulsifier

Ethyl Hydroxymethyl Oleyl Oxazoline

Ethyl Hydroxymethyl Oleyl Oxazoline

3.5

A synthetic emulsifier that helps oil and water mix in your skincare, generally considered safe and non-irritating at low levels.

Irritation

low

Source

synthetic

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Emulsifier

Glycereth-17 Tallowate

GLYCERETH-17 TALLOWATE

3.8

A gentle emulsifier that helps mix oil and water, but its animal-derived origin may not suit everyone.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glycereth-2 Cocoate

GLYCERETH-2 COCOATE

4.0

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

Irritation

low

Source

semi-synthetic

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Emulsifier

Glycereth-20 Stearate

GLYCERETH-20 STEARATE

4.0

A reliable, low-irritation emulsifier that helps create smooth, stable creams and lotions.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glycereth-3 Soyate

GLYCERETH-3 SOYATE

4.0

A gentle, plant-based emulsifier that helps blend water and oil in skincare products while providing light skin conditioning.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glycereth-5 Cocoate

GLYCERETH-5 COCOATE

4.0

A mild, coconut-derived emulsifier that helps blend water and oil in skincare formulas without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glycereth-6 Trioleate

GLYCERETH-6 TRIOLEATE

4.0

Glycereth-6 Trioleate is a gentle emulsifier that helps create stable, creamy textures in skincare products without common irritation concerns.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glycereth-7 Cocoate

GLYCERETH-7 COCOATE

4.0

A gentle, coconut-derived emulsifier that helps blend oil and water in your skincare, with a low risk of irritation.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glycereth-8 Hydroxystearate

GLYCERETH-8 HYDROXYSTEARATE

4.0

A gentle emulsifier that helps blend oil and water in skincare formulas without stripping the skin.

Irritation

low

Source

semi-synthetic

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Emollient

Glyceryl Caprylate

Glyceryl Caprylate

4.5

A mild, skin-friendly ingredient that helps products feel smooth and spread easily without clogging pores.

Irritation

low

Source

natural

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Emulsifier

Glyceryl Cocoyl Leucinate

GLYCERYL COCOYL LEUCINATE

4.5

A mild, coconut-derived emulsifier that helps blend oil and water in products while leaving skin feeling soft and conditioned.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glyceryl Hydroxystearate

Glyceryl Hydroxystearate

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

Glyceryl Laurate

Glyceryl Laurate

4.3

A mild emulsifier that helps blend oil and water in skincare products while offering gentle skin conditioning—safe for most skin types.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glyceryl Laurate SE

Glyceryl Laurate SE

4.0

A gentle emulsifier that helps blend water and oil in creams and lotions, with mild antimicrobial properties.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glyceryl Laurate/Oleate

Glyceryl Laurate/Oleate

4.0

A gentle emulsifier that helps blend oil and water in products while providing mild skin conditioning.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glyceryl Oleate

Glyceryl Oleate

4.3

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

Irritation

low

Source

natural

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Emulsifier

Glyceryl Oleate Citrate

Glyceryl Oleate Citrate

4.2

A gentle, plant-derived emulsifier that helps blend oil and water in creams and lotions while also softening the skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glyceryl Oleate SE

Glyceryl Oleate SE

4.0

A mild, plant-derived emulsifier that helps blend water and oil in creams and lotions while also softening the skin.

Irritation

low

Source

semi-synthetic

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Emollient

Glyceryl Olivate

Glyceryl Olivate

4.5

A mild, olive-derived ingredient that softens skin and helps blend water and oil in creams and lotions.

Irritation

low

Source

natural

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Emulsifier

Glyceryl Ricinoleate SE

GLYCERYL RICINOLEATE SE

4.0

A mild emulsifier that helps mix water and oil while also softening the skin, making it a gentle choice for sensitive formulas.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glyceryl Sesquioleate

GLYCERYL SESQUIOLEATE

4.0

A gentle emulsifier that helps blend water and oil in creams and lotions, with a low risk of irritation or clogged pores.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glyceryl Stearate

Glyceryl Stearate

4.5

A gentle, widely used emulsifier that helps create smooth, stable creams and lotions with low irritation potential.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glyceryl Stearate Citrate

Glyceryl Stearate Citrate

4.5

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

Irritation

low

Source

semi-synthetic

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Emulsifier

Glyceryl Stearate Lactate

Glyceryl Stearate Lactate

4.3

A mild, lactic-acid-derived emulsifier that helps blend oil and water while offering light moisturizing benefits.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glyceryl Stearate SE

Glyceryl Stearate SE

4.0

A gentle, self-emulsifying ingredient that helps create smooth, stable creams and lotions without harsh surfactants.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glyceryl Stearate Succinate

Glyceryl Stearate Succinate

4.0

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

Glyceryl Stearate/Acetate

GLYCERYL STEARATE/ACETATE

4.0

A gentle emulsifier that helps create stable, smooth creams and lotions with minimal irritation risk.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glycol Cetearyl Ester

Glycol Cetearyl Ester

4.0

A gentle emulsifier that helps your creams feel rich and stable without clogging pores.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glycol Oleate

Glycol Oleate

3.5

Glycol Oleate helps blend oil and water in creams and lotions, but may be slightly pore-clogging for acne-prone skin.

Irritation

low

Source

semi-synthetic

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Emulsifier

Glycol Stearate

Glycol Stearate

4.0

Glycol Stearate is a safe, mild emulsifier that helps blend oil and water in creams and gives them a pearly, luxurious look.

Irritation

low

Source

synthetic

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Emulsifier

Glycol Stearate SE

Glycol Stearate SE

4.0

A gentle emulsifier that helps oil and water mix in your creams, giving them a smooth, pearly texture without clogging pores.

Irritation

low

Source

semi-synthetic

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