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 20,303
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

PEG-3 Dipalmitate

PEG-3 DIPALMITATE

3.8

A gentle synthetic emollient that helps soften skin and stabilize formulas, but offers no active benefits beyond basic moisturizing.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emulsifier

PEG-3 Dirosinate

PEG-3 Dirosinate

3.5

A synthetic emulsifier that helps mix oil and water, generally considered safe and low-irritation for most skin types.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG-3 Distearate

PEG-3 Distearate

3.8

A reliable synthetic emulsifier that stabilizes creams and lotions, but offers no active skin benefits.

Irritation

low

Source

synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

PEG-3 Glyceryl Cocoate

PEG-3 Glyceryl Cocoate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG-3 Glyceryl Isostearate

PEG-3 Glyceryl Isostearate

4.0

A gentle emulsifier that helps water and oil mix, making creams and lotions smooth and stable without heavy irritation.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG-3 Glyceryl Triisostearate

PEG-3 Glyceryl Triisostearate

4.0

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

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG-3 Glyceryl Trioleate

PEG-3 GLYCERYL TRIOLEATE

3.8

A mild synthetic emulsifier that helps oil and water mix in creams and lotions, generally well-tolerated by most skin types.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG-3 Glyceryl Tristearate

PEG-3 Glyceryl Tristearate

3.8

A reliable synthetic emulsifier that helps create stable, creamy textures in skincare, with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG-3 Isostearate

PEG-3 Isostearate

3.8

A reliable synthetic emulsifier that helps blend water and oil in creams and cleansers, but may not suit those avoiding ethoxylated ingredients.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emollient

PEG-3 Lanolate

PEG-3 Lanolate

3.5

A gentle, water-friendly lanolin derivative that softens skin and helps blend oils and water, but may clog pores for some.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Surfactant

PEG-3 Lauramide

PEG-3 Lauramide

3.5

A synthetic cleansing agent that helps remove dirt and oil, but may be drying or irritating for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Surfactant

PEG-3 Lauramine Oxide

PEG-3 Lauramine Oxide

3.8

A gentle cleansing agent that helps create rich foam without stripping the skin, but may cause mild irritation for very sensitive types.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Solvent

PEG-3 Methyl Ether

PEG-3 METHYL ETHER

3.5

A gentle synthetic solvent and humectant that helps other ingredients dissolve and spread, but offers no unique skin benefit on its own.

Irritation

low

Source

synthetic

beautyskincaresolvent
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Surfactant

PEG-3 Oleamide

PEG-3 OLEAMIDE

3.5

PEG-3 Oleamide is a synthetic ingredient that helps mix oil and water in cleansers and lotions, but it may be mildly irritating for very sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Emulsifier

PEG-3 Oleate

PEG-3 Oleate

3.5

PEG-3 Oleate is a synthetic emulsifier that helps mix oil and water, but may cause irritation in sensitive skin at higher concentrations.

Irritation

moderate

Source

synthetic

beautyskincareemulsifier
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Film Former

PEG-3 PPG-20 Succinate

PEG-3 PPG-20 Succinate

3.8

A synthetic polymer that helps products spread smoothly and leaves a light, non-greasy feel on skin.

Irritation

low

Source

synthetic

beautyskincarefilm former
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Emulsifier

PEG-3 PPG-7 Ethylhexyl Ether

PEG-3 PPG-7 Ethylhexyl Ether

3.5

A synthetic helper that keeps oil and water mixed in your products, but it's not a star ingredient on its own.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Surfactant

PEG-3 Rapeseed Aminopropylamine

PEG-3 RAPESEED AMINOPROPYLAMINE

3.5

A conditioning ingredient that can improve softness and manageability, but may be irritating or clog pores for some.

Irritation

moderate

Source

semi-synthetic

beautyskincarehaircare
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Emulsifier

PEG-3 Sorbitan Oleate

PEG-3 Sorbitan Oleate

3.8

A gentle emulsifier that helps water and oil mix in your skincare products, but it's synthetic and may not suit everyone's preferences.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG-3 Sorbitan Stearate

PEG-3 SORBITAN STEARATE

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG-3 Sorbitan Tristearate

PEG-3 SORBITAN TRISTEARATE

3.8

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

Irritation

low

Source

synthetic

beautyskincareemulsifier
Read ingredient review

Surfactant

PEG-3 Tallow Aminopropylamine

PEG-3 TALLOW AMINOPROPYLAMINE

3.5

An effective hair conditioner derived from animal fat, but may cause irritation or clog pores in sensitive individuals.

Irritation

moderate

Source

semi-synthetic

beautyskincarehaircare
Read ingredient review

Antistatic Agent

PEG-3 Tallow Propylenedimonium Dimethosulfate

PEG-3 TALLOW PROPYLENEDIMONIUM DIMETHOSULFATE

3.5

A conditioning ingredient from animal-derived tallow that softens hair and reduces static, but may be too heavy for fine hair or oily skin.

Irritation

moderate

Source

semi-synthetic

beautyskincarehaircareconditioning agent
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Emulsifier

PEG-3 Trimethylolpropane Tristearate

PEG-3 TRIMETHYLOLPROPANE TRISTEARATE

3.8

A reliable synthetic emulsifier that helps blend oil and water in creams and lotions, generally well-tolerated but not a star active ingredient.

Irritation

low

Source

synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

PEG-30 Castor Oil

PEG-30 Castor Oil

3.8

PEG-30 Castor Oil helps mix water and oil in products, but may be irritating for sensitive or acne-prone skin at higher concentrations.

Irritation

moderate

Source

semi-synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

PEG-30 Glyceryl Cocoate

PEG-30 Glyceryl Cocoate

4.0

A gentle, coconut-derived emulsifier that helps cleanse without stripping the skin, but may not suit those avoiding ethoxylated ingredients.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
Read ingredient review

Emulsifier

PEG-30 Glyceryl Diisostearate

PEG-30 GLYCERYL DIISOSTEARATE

3.8

A reliable synthetic emulsifier that helps create stable, creamy textures, but may not suit those avoiding PEGs.

Irritation

low

Source

synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

PEG-30 Glyceryl Isostearate

PEG-30 Glyceryl Isostearate

3.8

A reliable synthetic emulsifier that helps create stable, creamy textures, but may be too heavy for very oily or acne-prone skin.

Irritation

low

Source

synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

PEG-30 Glyceryl Laurate

PEG-30 Glyceryl Laurate

3.8

A gentle emulsifier that helps mix oils and water, but may not suit those avoiding PEG compounds.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

PEG-30 Glyceryl Oleate

PEG-30 Glyceryl Oleate

3.5

PEG-30 Glyceryl Oleate is a workhorse emulsifier that helps mix oil and water, but it may be slightly irritating for very sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincareemulsifier
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Surfactant

PEG-30 Glyceryl Soyate

PEG-30 Glyceryl Soyate

4.0

A gentle, plant-derived surfactant that helps cleanse without stripping the skin's natural moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Emulsifier

PEG-30 Glyceryl Stearate

PEG-30 Glyceryl Stearate

4.0

A reliable 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

PEG-30 Glyceryl Triisostearate

PEG-30 Glyceryl Triisostearate

3.8

A reliable synthetic emulsifier that helps create stable, creamy formulas, but may not suit those avoiding PEG compounds.

Irritation

low

Source

synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

PEG-30 Glyceryl Trioleate

PEG-30 Glyceryl Trioleate

3.8

A reliable emulsifier that helps water and oil mix in creams and lotions, but it is synthetic and may not suit those avoiding PEGs.

Irritation

low

Source

synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

PEG-30 Hydrogenated Castor Oil

PEG-30 Hydrogenated Castor Oil

3.8

A reliable emulsifier that helps mix oil and water in cleansers and lotions, but may feel heavy on very oily skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG-30 Hydrogenated Lanolin

PEG-30 Hydrogenated Lanolin

3.8

A gentle emulsifier that helps blend oil and water in creams, but may clog pores in acne-prone skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Surfactant

PEG-30 Hydrogenated Tallow Amine

PEG-30 Hydrogenated Tallow Amine

3.5

An effective emulsifier and surfactant, but may cause irritation in sensitive skin and raises environmental concerns due to ethoxylation.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
Read ingredient review

Emulsifier

PEG-30 Isostearate

PEG-30 Isostearate

3.5

A reliable synthetic emulsifier that helps create smooth, stable formulas, but may not suit those avoiding PEG compounds.

Irritation

low

Source

synthetic

beautyskincareemulsifier
Read ingredient review

Emollient

PEG-30 Lanolin

PEG-30 Lanolin

3.5

PEG-30 Lanolin is a water-friendly version of lanolin that softens skin and helps blend oil and water in formulas, but it may clog pores for some people.

Irritation

low

Source

semi-synthetic

beautyskincareemollientemulsifier
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Surfactant

PEG-30 Oleamine

PEG-30 Oleamine

3.5

PEG-30 Oleamine is an effective emulsifier but may cause irritation or clog pores for sensitive or acne-prone skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
Read ingredient review

Emulsifier

PEG-30 Phytosterol

PEG-30 Phytosterol

4.0

A gentle, plant-based emulsifier that helps create stable, creamy formulas while offering mild skin conditioning.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG-30 Sorbitan Tetraoleate

PEG-30 Sorbitan Tetraoleate

3.5

A reliable synthetic emulsifier that helps oil and water mix in creams and lotions, but it may not suit those seeking fully natural formulas.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG-30 Soy Sterol

PEG-30 SOY STEROL

4.0

A reliable, low-irritation emulsifier that helps create stable, creamy formulas while offering mild skin conditioning.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG-30 Stearate

PEG-30 Stearate

3.5

A reliable emulsifier that keeps creams stable, but may be too heavy for very oily or acne-prone skin.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Surfactant

PEG-30 Tallow Amine

PEG-30 Tallow Amine

3.5

An effective emulsifier and surfactant, but may cause irritation for sensitive skin and raises ethical concerns due to animal-derived tallow.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Emulsifier

PEG-32 Dilaurate

PEG-32 Dilaurate

3.8

A synthetic emulsifier that helps blend oil and water in creams and lotions, generally considered safe and low-irritation for most skin types.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG-32 Dioleate

PEG-32 Dioleate

3.5

A synthetic emulsifier that helps blend oil and water, generally safe but may not suit those avoiding PEG compounds.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG-32 Distearate

PEG-32 Distearate

3.8

A reliable synthetic emulsifier that helps blend oil and water in creams and lotions, generally considered safe and non-irritating at typical use levels.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG-32 Laurate

PEG-32 Laurate

3.8

A synthetic emulsifier that helps blend oil and water in cleansers, but may be drying or irritating for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
Read ingredient review

Emollient

PEG-32 Methyl Ether Dimethicone

PEG-32 METHYL ETHER DIMETHICONE

4.0

A gentle silicone that helps products glide on smoothly without clogging pores, but may not suit those avoiding silicones entirely.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emulsifier

PEG-32 Oleate

PEG-32 Oleate

3.5

PEG-32 Oleate is a safe, widely used emulsifier that helps products feel smooth and rinse cleanly, but it may be less ideal for very sensitive or reactive skin.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Emulsifier

PEG-32 Stearate

PEG-32 Stearate

3.8

A reliable emulsifier that keeps creams stable, but may be too heavy for very oily or acne-prone skin.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG-33 Castor Oil

PEG-33 Castor Oil

4.0

A gentle, water-soluble emulsifier that helps mix oils into water-based formulas without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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