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 12 of 4,092
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

Antioxidant

Zinc Ascorbate

Zinc Ascorbate

4.0

A gentle, stable vitamin C derivative that pairs antioxidant protection with zinc's soothing properties, ideal for sensitive skin.

Irritation

low

Source

semi-synthetic

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Antioxidant

Zinc Ascorbate Hydroxide

Zinc Ascorbate Hydroxide

4.0

A gentle, stabilized vitamin C derivative that pairs with zinc to support antioxidant protection and even skin tone with low irritation potential.

Irritation

low

Source

semi-synthetic

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Antioxidant

Zinc Aspartate

Zinc Aspartate

4.0

Zinc Aspartate is a gentle, antioxidant form of zinc that helps calm irritation and protect skin from environmental stress without the drying effect of some other zinc forms.

Irritation

low

Source

semi-synthetic

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Antioxidant

Zinc Citrate

ZINC CITRATE

4.0

Zinc Citrate is a gentle, non-irritating ingredient that helps calm skin, reduce oiliness, and provide antioxidant protection without clogging pores.

Irritation

low

Source

synthetic

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Antioxidant

Zinc Cysteinate

ZINC CYSTEINATE

4.0

A gentle antioxidant complex that pairs zinc with the amino acid cysteine to help calm and protect skin.

Irritation

low

Source

semi-synthetic

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Antioxidant

Zinc Glycinate

Zinc Glycinate

4.2

Zinc glycinate is a well-tolerated, chelated zinc that offers antioxidant protection and soothing benefits without the irritation of other zinc forms.

Irritation

low

Source

semi-synthetic

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Antioxidant

Zingerone

ZINGERONE

3.8

Zingerone is a ginger-derived antioxidant that may help calm skin and fight free radical damage, though research in cosmetics is still emerging.

Irritation

low

Source

natural

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Antioxidant

Zinnia Callus Culture Extract

ZINNIA ELEGANS CALLUS CULTURE EXTRACT

3.8

A gentle, lab-grown plant extract that may help protect skin from environmental stress, but research is still early.

Irritation

low

Source

biotech

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Antioxidant

Ziyu Glycoside I

Ziyu Glycoside I

3.5

A plant compound with early research suggesting antioxidant and anti-inflammatory benefits, but human skincare studies are limited.

Irritation

low

Source

natural

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Antioxidant

Ziyu Glycoside II

Ziyu Glycoside II

3.5

A plant compound with early research suggesting antioxidant and soothing benefits, but more human studies are needed to confirm its effectiveness in skincare.

Irritation

low

Source

natural

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Antioxidant

Ziyu Glycoside III

Ziyu Glycoside III

3.5

Ziyu Glycoside III is a plant compound with early evidence of antioxidant and anti-inflammatory benefits, but research in cosmetic formulations is still limited.

Irritation

low

Source

natural

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Soothing Agent

Zymomonas Ferment Extract

Zymomonas Ferment Extract

4.0

A gentle, fermented ingredient that may help calm skin and fight free radicals, but research is still early.

Irritation

low

Source

biotech

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