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 131
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

UV Filter

Etocrylene

Etocrylene

3.5

Etocrylene is a synthetic UV filter that helps protect skin from sun damage, but it is less common in modern formulations due to concerns about photostability and potential skin sensitivity.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

Glyceryl Ethylhexanoate Dimethoxycinnamate

GLYCERYL ETHYLHEXANOATE DIMETHOXYCINNAMATE

3.8

A synthetic UV filter that helps protect skin from sunburn and long-term sun damage, but it's less common in modern formulations due to availability of newer filters.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

Hexylethylideneamino Benzoate

HEXYLETHYLIDENEAMINO-BENZOATE

3.5

A synthetic UV filter that helps protect skin from sun damage, but its use is limited by regional regulations and potential environmental concerns.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

Homosalate

Homosalate

3.5

Homosalate is a common UVB sunscreen filter that is effective at preventing sunburn, but it has raised some environmental and potential endocrine concerns that are still being studied.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Absorber

Hydroxy Oxobenzoxathiol

Hydroxy Oxobenzoxathiol

3.5

A synthetic UV filter that helps protect skin from sun damage, but with limited independent safety data compared to more common filters.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Absorber

Isobutyl Methylaminobenzoate

ISOBUTYL METHYLAMINOBENZOATE

3.5

A synthetic UVB filter that helps protect skin from sunburn, but its use is limited by regulatory approval in some regions.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Absorber

Isopropyl Dibenzoylmethane

Isopropyl Dibenzoylmethane

3.5

A synthetic UVA filter that helps protect skin from sun damage, but its use has declined due to availability of more photostable alternatives.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Absorber

Menthyl Anthranilate

Menthyl Anthranilate

3.8

Menthyl Anthranilate is a gentle UVA sunscreen ingredient, but it is less common and not as broad-spectrum as newer alternatives.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

Methoxycinnamidopropyl Hydroxysultaine

Methoxycinnamidopropyl Hydroxysultaine

4.0

A dual-action ingredient that helps sunscreen spread evenly while adding a modest UV boost, but it is not a standalone sun protectant.

Irritation

low

Source

synthetic

beautyskincaresunscreensurfactant
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UV Filter

Methyl Benzylidene Camphor

METHYL2-PHENYLMETHYLENEOCTYLIDENEAMINO BENZOATE

3.5

A synthetic UVB filter that protects skin from sunburn, but its use is restricted in some countries due to safety concerns.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

Methyl Decylideneaminobenzoate

METHYL DECYLIDENEAMINOBENZOATE

3.5

A synthetic UV filter that helps protect skin from sun damage, but is less common in modern formulations due to availability of newer alternatives.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Absorber

Methyl Formylaminobenzoate

METHYL FORMYLAMINOBENZOATE

3.5

A synthetic UV filter that helps protect skin from sun damage, but its use is limited to certain regions and formulations.

Irritation

low

Source

synthetic

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UV Filter

Methyl Methoxycinnamate

METHYL METHYLUNDECYLIDENE-AMINOBENZOATE

3.5

A synthetic UVB filter that helps protect skin from sunburn, but its use is declining due to safety and environmental concerns.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

Methylbenzylidene Camphor

METHYLENEDIOXYBENZOYL ETHYL PABA

3.5

A synthetic UVB filter that is effective but has limited global approval due to safety concerns.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

Methylbutylphenyl Hexyloxybenzoate

METHYLBUTYLPHENYL HEXYLOXYBENZOATE

4.0

A synthetic UV filter that effectively absorbs UV rays, but its use is limited to certain regions due to regulatory differences.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

Methylbutylphenyl Octyloxybenzoate

METHYLBUTYLPHENYL OCTYLOXYBENZOATE

4.0

A synthetic UV filter that helps protect skin from sun damage, generally considered safe and effective in approved concentrations.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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Solvent

Methylbutylphenyl Pentylbenzoate

METHYLBUTYLPHENYL PENTYLBENZOATE

4.0

A synthetic ester that helps dissolve and stabilize UV filters in sunscreens, generally considered safe and non-irritating.

Irritation

low

Source

synthetic

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UV Absorber

Naphthyl Benzothiazinone Complex

POTASSIUM NAPHTHYL METHYLHYDROXYDIOXOBENZOTHIAZINOLATE METHANONE

3.8

A synthetic UV filter that helps shield skin from harmful rays, but its use is limited to certain regions and formulations.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

Octinoxate

Ethylhexyl Methoxycinnamate

3.8

Octinoxate is a widely used UVB filter that protects skin from sunburn, but it has raised environmental concerns and may cause skin reactions in some people.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

Octocrylene

Octocrylene

3.5

Octocrylene is a widely used sunscreen ingredient that effectively absorbs UVB rays, but it has raised some environmental and stability concerns.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Absorber

Octrizole

Octrizole

4.0

Octrizole is a synthetic UV filter that helps protect skin from sun damage, but it's less common in the US than in Europe and Asia.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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Photostabilizer

Octyldodecyl Methoxycrylene

Octyldodecyl Methoxycrylene

4.0

Octyldodecyl Methoxycrylene is a synthetic photostabilizer that helps keep other sunscreen filters effective longer when exposed to sunlight.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

PEG-25 PABA

PEG-25 PABA

2.5

PEG-25 PABA is an older UV filter that effectively absorbs UVB rays but has fallen out of favor due to potential skin sensitivity and environmental concerns.

Irritation

moderate

Source

synthetic

beautyskincaresunscreen
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UV Filter

Pentylphenyl Methoxybenzoate

Pentylphenyl Methoxybenzoate

4.0

A modern synthetic UV filter that offers broad-spectrum protection with a good safety profile, but is not yet as widely studied as older filters.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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Emollient

Pentylphenyl Octyloxybenzoate

Pentylphenyl Octyloxybenzoate

3.8

A synthetic ingredient that helps sunscreens feel silky and keeps UV filters stable, but it's not a primary active on its own.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Absorber

Phenyl Salicylate

PHENYL SALICYLATE

3.5

Phenyl salicylate offers mild UV protection but may cause skin irritation in sensitive individuals.

Irritation

moderate

Source

synthetic

beautyskincaresunscreen
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UV Filter

Phenylbenzimidazole Sulfonate

POTASSIUM PHENYLBENZIMIDAZOLE SULFONATE

4.0

A widely used, water-soluble UVB filter that offers effective sunburn protection without a heavy feel.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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Film Former

Polysilicone-15

Polysilicone-15

4.0

Polysilicone-15 is a safe, non-irritating silicone that helps sunscreen stay on your skin longer and feel lighter.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

Potassium Methoxycinnamate

Potassium Methoxycinnamate

3.8

A synthetic UVB filter that helps shield skin from sunburn, but its use is limited in some regions due to regulatory differences.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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UV Filter

Silicon/Titanium/Cerium/Iron Oxides

SILICON/TITANIUM/CERIUM/IRON OXIDES

4.0

A safe, mineral-based pigment blend that provides broad-spectrum UV protection and natural-looking coverage without common chemical sunscreen irritants.

Irritation

low

Source

natural

beautyskincaresunscreenpigment
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