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 20,769
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

Film Former

Acrylate Copolymer

ETHYLHEXYL ACRYLATE/METHYL METHACRYLATE COPOLYMER

3.5

A safe, synthetic film-former that helps products stay put and resist water, but offers no active skincare benefit.

Irritation

low

Source

synthetic

beautyskincarehaircare
Read ingredient review

Film Former

Acrylate Copolymer Blend

SODIUM STYRENE/ACRYLATES/ETHYLHEXYL ACRYLATE/LAURYL ACRYLATE COPOLYMER

3.8

A safe synthetic polymer that helps products stay put, resist water, and feel smooth on skin.

Irritation

low

Source

synthetic

beautyskincarecosmetic
Read ingredient review

Film Former

Acrylate Copolymer Film

POLY[OXYMETHYLENE MELAMINE ACRYLATES/ACRYLAMIDE]

3.5

A synthetic film-former that helps products stay put longer, but offers no active skincare benefit.

Irritation

low

Source

synthetic

beautyskincarehaircare
Read ingredient review

Film Former

Acrylate Copolymer Film Former

BIS-PENTAERYTHRITYL TRIACRYLATE POLY(1,4-BUTANEDIOL)-9/GLYCOL/IPDI COPOLYMER

3.5

A synthetic film former that helps makeup stay put, but offers no skincare benefit and may feel tight on dry skin.

Irritation

low

Source

synthetic

beautycosmeticsfilm-former
Read ingredient review

Thickener

Acrylate Copolymer Thickener

SODIUM ACRYLATE/SODIUM ACRYLOYLDIMETHYL TAURATE/ACRYLAMIDE COPOLYMER

4.0

A safe, effective thickener that gives skincare products a smooth, non-sticky feel without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
Read ingredient review

Film Former

Acrylate Film Former

GLYCIDYL C8-11 ACIDATE/GLYCERIN/PHTHALIC ANHYDRIDE COPOLYMER

3.5

A synthetic film former that helps products stay put, but its phthalate-related name may cause confusion — it is not a phthalate of concern.

Irritation

low

Source

synthetic

beautyskincarefilm-former
Read ingredient review

Film Former

Acrylate Film-Forming Polymer

Octylacrylamide/Acrylates/Butylaminoethyl Methacrylate Copolymer

3.5

A synthetic polymer that helps makeup and hair products stay put, but may feel stiff or heavy on some.

Irritation

low

Source

synthetic

beautyskincarehaircare
Read ingredient review

Film Former

Acrylate/Dimethicone Copolymer

C8-22 ALKYL ACRYLATE/BUTYL DIMETHICONE METHACRYLATE COPOLYMER

3.8

A safe, synthetic film-former that helps makeup last longer and feel smoother without clogging pores.

Irritation

low

Source

synthetic

beautyskincarefilm-former
Read ingredient review

Film Former

Acrylates Copolymer

SODIUM ACRYLATES/ETHYLHEXYL ACRYLATE COPOLYMER

3.8

A safe, synthetic polymer that helps products spread smoothly and stay put without feeling heavy.

Irritation

low

Source

synthetic

beautyskincaretexturizer
Read ingredient review

Film Former

Acrylates Copolymer Blend

DIMETHYLAMINOETHYLMETHACRYLATE/HEMA/LAURYL METHACRYLATE COPOLYMER

3.5

A synthetic film-former that helps products stay put and resist water, but offers no active skincare benefit.

Irritation

low

Source

synthetic

beautyskincarefilm-former
Read ingredient review

Viscosity Controlling Agent

Acrylates Copolymer Thickener

Hydroxyethyl Acrylate/IPDI/PPG-15 Glyceryl Ether Copolymer

4.0

A safe, synthetic thickener and stabilizer that gives water-based products a silky, lightweight feel without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
Read ingredient review

Film Former

Acrylates Copolymer with Amine Oxide

ACRYLATES/STEARYL ACRYLATE/ETHYLAMINE OXIDE METHACRYLATE COPOLYMER

3.5

A safe, synthetic film-former that helps products spread smoothly and stay put, but offers no active skincare benefit.

Irritation

low

Source

synthetic

beautyskincarehaircare
Read ingredient review

Film Former

Acrylates Crosspolymer

ACRYLATES/TRIMETHYLSILOXYPROPYL METHACRYLATE CROSSPOLYMER

3.8

A silicone-based film former that improves water resistance and wear time, generally safe but may feel heavy on some skin types.

Irritation

low

Source

synthetic

beautyskincarefilm-former
Read ingredient review

Film Former

Acrylates Crosspolymer Blend

ACRYLATES/LAURYL METHACRYLATE/TRIDECYL METHACRYLATE CROSSPOLYMER

4.0

A safe, synthetic ingredient that helps products feel smooth and spread evenly without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
Read ingredient review

Viscosity Controlling Agent

Acrylates Crosspolymer-3

ACRYLATES CROSSPOLYMER-3

4.0

A safe, synthetic thickener that gives gels and creams a smooth, non-sticky feel without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
Read ingredient review

Viscosity Controlling

Acrylates Crosspolymer-4

Acrylates Crosspolymer-4

4.0

A safe, synthetic thickener that improves product texture and stability without clogging pores or irritating skin.

Irritation

low

Source

synthetic

beautyskincaretexturizer
Read ingredient review

Film Former

Acrylates Crosspolymer-9

AMP-Acrylates Polyacrylate Crosspolymer-9

4.0

A safe, synthetic thickener that gives skincare products a silky, non-sticky feel without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
Read ingredient review

Film Former

Acrylates Phosphate Copolymer

Acrylates/Methacryloyloxyethyl Phosphate Copolymer

4.0

A safe, synthetic film-former that helps products spread smoothly and stay put without clogging pores.

Irritation

low

Source

synthetic

beautyskincarefilm-former
Read ingredient review

Film Former

Acrylates Succinate Copolymer

ACRYLATES/C1-2 SUCCINATES/HYDROXYACRYLATES COPOLYMER

4.0

A safe synthetic polymer that helps products stay put and feel smooth, but offers no active skincare benefit.

Irritation

low

Source

synthetic

beautyskincarefilm-former
Read ingredient review

Film Former

Acrylates/HEMA Copolymer

ACRYLATES/HEMA COPOLYMER

3.5

A safe, synthetic film-former that helps makeup and sunscreen stay put without clogging pores.

Irritation

low

Source

synthetic

beautyskincarefilm-former
Read ingredient review

Film Former

Acrylates/Silicone Copolymer

ACRYLATES/STEARYL ACRYLATE/DIMETHICONE METHACRYLATE COPOLYMER

3.8

A synthetic film-former that helps products stay put and resist water, but may feel tight or heavy on some skin types.

Irritation

low

Source

synthetic

beautyskincarefilm-former
Read ingredient review

Film Former

Acrylates/Soybean Oil Copolymer

ACRYLATES/HYDROXYPROPYL EPOXIDIZED SOYBEAN OIL COPOLYMER

3.8

A safe film-forming polymer that helps makeup and sunscreen stay put without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincarefilm-former
Read ingredient review