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 7 of 7
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

Viscosity Controlling Agent

Aluminum Caprylate

Aluminum Caprylate

3.5

Aluminum Caprylate is a safe, synthetic thickener and stabilizer that helps maintain product texture but offers no direct skin benefit.

Irritation

low

Source

synthetic

beautyskincareviscosity controlling agent
Read ingredient review

Viscosity Controlling Agent

Aluminum Dilinoleate

ALUMINUM DILINOLEATE

3.5

A safe and effective thickener and stabilizer that improves product texture and shelf life, but offers no direct skin benefit.

Irritation

low

Source

synthetic

beautyskincareviscosity controlling agent
Read ingredient review

Viscosity Controlling Agent

Hydrogenated Tallowalkonium Bentonite

Hydrogenated Tallowalkonium Bentonite

3.5

A safe, effective thickener for makeup and creams, but its animal-derived origin may not suit everyone.

Irritation

low

Source

semi-synthetic

beautyskincareviscosity controlling agent
Read ingredient review

Viscosity Controlling Agent

Potassium Chloride

POTASSIUM CHLORIDE

3.5

Potassium chloride is a safe, common salt used to adjust product thickness and stability, not a star active ingredient.

Irritation

low

Source

natural

beautyskincareviscosity controlling agent
Read ingredient review

Viscosity Controlling Agent

Sodium Sulfate

Sodium Sulfate

3.5

Sodium sulfate is a safe, mild salt used to thicken and stabilize formulas, but it offers no direct skin benefit.

Irritation

low

Source

synthetic

beautyskincareviscosity controlling agent
Read ingredient review

Viscosity Controlling Agent

Stearalkonium Hectorite

STEARALKONIUM HECTORITE

4.0

A safe, clay-based thickener that helps keep formulas smooth and stable, but may feel heavy on very oily skin.

Irritation

low

Source

semi-synthetic

beautyskincareviscosity controlling agent
Read ingredient review