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

PEG-90 Stearate

PEG-90 Stearate

3.8

A reliable synthetic emulsifier that helps create smooth, stable creams and lotions, but may be too heavy for very oily or acne-prone skin.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG Dimethicone Copolymer

PEG/PPG-24/24 Methyl Ether Glycidoxy Dimethicone

3.8

A silicone emulsifier that helps mix water and oil for a smooth, spreadable texture, but may not suit those avoiding silicones.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-10/2 Dimethicone

PEG/PPG-10/2 Dimethicone

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-10/2 Diricinoleate

PEG/PPG-10/2 Diricinoleate

3.8

A reliable synthetic emulsifier that helps mix oil and water in formulas, generally well-tolerated but not a standout active ingredient.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-10/2 Ricinoleate

PEG/PPG-10/2 Ricinoleate

3.8

A gentle emulsifier that helps mix oil and water in cleansers and creams, with a low risk of irritation.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-12/16 Dimethicone

PEG/PPG-12/16 Dimethicone

4.0

A gentle silicone emulsifier that improves texture and helps ingredients mix, but may not suit those avoiding silicones.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-14/4 Dimethicone

PEG/PPG-14/4 Dimethicone

3.8

A versatile silicone emulsifier that improves texture and spreadability with a low risk of irritation.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-15/15 Dimethicone

PEG/PPG-15/15 Dimethicone

4.0

A silicone emulsifier that helps create smooth, lightweight textures and improves product spreadability without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-15/5 Dimethicone

PEG/PPG-15/5 Dimethicone

4.0

A versatile silicone emulsifier that improves product texture and spreadability with a low risk of irritation.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-16/2 Dimethicone

PEG/PPG-16/2 Dimethicone

4.0

A gentle silicone emulsifier that stabilizes formulas and leaves skin feeling smooth without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-16/8 Dimethicone

PEG/PPG-16/8 Dimethicone

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-17/18 Dimethicone

PEG/PPG-17/18 Dimethicone

4.0

A gentle silicone emulsifier that helps blend water and oil ingredients while leaving a smooth, non-sticky feel on skin.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-18/12 Dimethicone

PEG/PPG-18/12 Dimethicone

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-18/18 Dimethicone

PEG/PPG-18/18 Dimethicone

4.0

A gentle silicone emulsifier that improves product texture and helps ingredients mix without causing irritation.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-18/18 Isostearate

PEG/PPG-18/18 Isostearate

3.5

A safe, effective emulsifier that helps mix water and oil in your products, but it's synthetic and may not suit those avoiding PEGs.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-18/18 Laurate

PEG/PPG-18/18 Laurate

3.5

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

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-18/6 Dimethicone

PEG/PPG-18/6 Dimethicone

4.0

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

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-20/15 Dimethicone

PEG/PPG-20/15 Dimethicone

4.0

A versatile silicone emulsifier that helps blend water and oil phases for a smooth, silky texture without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-20/20 Dimethicone

PEG/PPG-20/20 Dimethicone

4.0

A versatile silicone emulsifier that improves product texture and spreadability without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-20/23 Dimethicone

PEG/PPG-20/23 Dimethicone

4.0

A versatile silicone emulsifier that helps create smooth, spreadable formulas without greasiness, but may not suit those avoiding silicones.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-20/29 Dimethicone

PEG/PPG-20/29 Dimethicone

4.0

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

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-20/6 Dimethicone

PEG/PPG-20/6 Dimethicone

4.0

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

Irritation

low

Source

synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

PEG/PPG-22/23 Dimethicone

PEG/PPG-22/23 Dimethicone

4.0

A gentle silicone emulsifier that helps create smooth, spreadable formulas without heavy greasiness.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-22/24 Dimethicone

PEG/PPG-22/24 Dimethicone

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

PEG/PPG-23/6 Dimethicone

PEG/PPG-23/6 Dimethicone

4.0

A gentle silicone emulsifier that improves texture and spreadability without clogging pores or causing irritation.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-25/25 Dimethicone

PEG/PPG-25/25 Dimethicone

4.0

A gentle silicone emulsifier that helps create smooth, stable formulas without feeling heavy or greasy.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-27/27 Dimethicone

PEG/PPG-27/27 Dimethicone

4.0

A gentle silicone emulsifier that helps blend water and oil phases, giving products a silky, non-greasy feel.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-3/10 Dimethicone

PEG/PPG-3/10 Dimethicone

4.0

A gentle silicone emulsifier that improves product texture and spreadability with a low risk of irritation.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-30/10 Dimethicone

PEG/PPG-30/10 Dimethicone

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-32/3 Diricinoleate

PEG/PPG-32/3 Diricinoleate

3.8

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

Irritation

low

Source

synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

PEG/PPG-32/3 Ricinoleate

PEG/PPG-32/3 Ricinoleate

3.5

A reliable emulsifier that helps mix oil and water in cleansers and creams, but may not suit those avoiding PEG compounds.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-6/4 Dimethicone

PEG/PPG-6/4 Dimethicone

4.0

A gentle silicone emulsifier that improves texture and spreadability, but may not suit those avoiding silicones.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-8/14 Dimethicone

PEG/PPG-8/14 Dimethicone

4.0

A versatile silicone emulsifier that improves product texture and spreadability with a low risk of irritation.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-8/3 Diisostearate

PEG/PPG-8/3 Diisostearate

3.8

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

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

PEG/PPG-8/3 Laurate

PEG/PPG-8/3 Laurate

3.8

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

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Skin Conditioning Agent

PG-Palmitoylpalmitamide

PG-PALMOYLPALMAMIDE

3.5

A synthetic ingredient that helps condition skin and stabilize formulas, but research on its specific benefits is still limited.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

Polyglyceride Ester Blend

Hydroxystearic/Linolenic/Oleic Polyglycerides

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Polyglyceride Fatty Acid Blend

OLEIC/LINOLEIC/LINOLENIC POLYGLYCERIDES

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Polyglyceryl Dimer Soyate

Polyglyceryl Dimer Soyate

4.0

A gentle, plant-derived emulsifier that helps create stable, creamy formulas without harsh detergents.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Polyglyceryl-10 Caprate

Polyglyceryl-10 Caprate

4.3

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

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Polyglyceryl-10 Cocoate

Polyglyceryl-10 Cocoate

4.5

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

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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