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 20,303
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

Zanthoxylum Fruit Oil

ZANTHOXYLUM ACANTHOPODIUM FRUIT OIL

3.8

A gentle, antioxidant-rich oil from the prickly ash fruit that may help calm skin and fight free radicals, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Zanthoxylum Piperitum Peel Extract

ZANTHOXYLUM PIPERITUM PEEL EXTRACT

4.0

A gentle botanical extract that helps calm skin and fight environmental stress, but research is still limited compared to more studied antioxidants.

Irritation

low

Source

natural

beautyskincarebotanical extract
Read ingredient review

Antioxidant

Zeatin

ZEATIN

3.8

Zeatin is a plant hormone with antioxidant potential that may help protect skin from environmental stress, but human research is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Zeaxanthin

ZEAXANTHIN

4.0

Zeaxanthin is a gentle antioxidant that helps defend skin against blue light and UV damage, but it is not a replacement for sunscreen.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Zederone

ZEDERONE

3.8

Zederone is a plant-derived antioxidant that may help calm skin and fight free radical damage, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Zedoary Root Powder

Curcuma Zedoaria Root Powder

3.8

A gentle, antioxidant-rich root powder that may help calm skin and fight free radical damage, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Film Former

Zein

ZEIN

4.0

Zein is a gentle, corn-derived protein that forms a breathable film on skin and hair, helping lock in moisture and improve texture without clogging pores.

Irritation

low

Source

natural

beautyskincarefilm-former
Read ingredient review

Absorbent

Zeolite

Zeolite

3.8

Zeolite is a gentle mineral that helps absorb excess oil and lightly exfoliate without harshness, making it a good option for oily or combination skin.

Irritation

low

Source

natural

beautyskincareexfoliantabsorbent
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Soothing Agent

Zerumbet Ginger Juice

Zingiber Zerumbet Juice

3.8

A gentle botanical juice with antioxidant and soothing potential, but research is limited compared to more common ginger extracts.

Irritation

low

Source

natural

beautyskincarebotanical extract
Read ingredient review

Soothing agent

Zinc

Zinc

4.0

Zinc is a well-studied mineral that helps calm irritation, control oil, and protect the skin barrier.

Irritation

low

Source

natural

beautyskincaremineral
Read ingredient review

Astringent

Zinc Acetate

Zinc Acetate

3.8

Zinc acetate is a gentle astringent that helps tighten pores and reduce surface bacteria, but it is not a primary acne treatment.

Irritation

low

Source

synthetic

beautyskincareastringent
Read ingredient review

Antioxidant

Zinc Acetylmethionate

Zinc Acetylmethionate

3.8

A gentle zinc-based ingredient that may help calm skin and fight free radicals, but research is still limited.

Irritation

low

Source

synthetic

beautyskincareantioxidant
Read ingredient review

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

beautyskincareantioxidant
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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

beautyskincareantioxidant
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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

beautyskincareantioxidant
Read ingredient review

Soothing agent

Zinc Azelate Hydroxide

ZINC AZELATE HYDROXIDE

4.0

A gentle, multi-tasking ingredient that combines the benefits of zinc and azelaic acid to calm skin and reduce shine.

Irritation

low

Source

synthetic

beautyskincaresoothing agent
Read ingredient review

Preservative

Zinc Borate

ZINC BORATE

3.0

Zinc borate is a synthetic preservative with antimicrobial properties, but its use in skincare is limited and may cause irritation for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarepreservative
Read ingredient review

Absorbent

Zinc Carbonate

Zinc Carbonate

4.0

Zinc carbonate is a gentle mineral that soothes irritation and absorbs excess oil, making it a safe choice for sensitive and acne-prone skin.

Irritation

low

Source

natural

beautyskincaremineral
Read ingredient review

Film Former

Zinc Carboxydecyl Trisiloxane

ZINC CARBOXYDECYL TRISILOXANE

3.5

A synthetic silicone ingredient that forms a light, breathable film on skin, often used to improve texture and wear of products.

Irritation

low

Source

synthetic

beautyskincarefilm-former
Read ingredient review

Astringent

Zinc Chloride

ZINC CHLORIDE

3.5

Zinc chloride is an effective astringent and deodorant ingredient, but its potential for irritation makes it less suitable for sensitive skin or daily leave-on use.

Irritation

moderate

Source

synthetic

beautyskincareastringent
Read ingredient review

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

beautyskincareantioxidant
Read ingredient review

Surfactant

Zinc Coceth Sulfate

Zinc Coceth Sulfate

3.8

A gentle, coconut-derived surfactant that cleanses effectively with low irritation potential, suitable for sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
Read ingredient review

Surfactant

Zinc Coco-Sulfate

Zinc Coco-Sulfate

3.8

A gentler sulfate cleanser that effectively removes dirt and oil without stripping the skin, but may still be too drying for very sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

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

beautyskincareantioxidant
Read ingredient review

Film Former

Zinc Dimethicone PEG-25 Phthalate

ZINC DIMETHICONE PEG-25 PHTHALATE

3.5

A silicone hybrid that helps products spread smoothly and resist water, but its phthalate component raises unnecessary concern despite being chemically different from controversial phthalates.

Irritation

low

Source

synthetic

beautyskincarefilm-former
Read ingredient review

Skin conditioning agent

Zinc Docosahexaenoate Hydroxide

Zinc Docosahexaenoate Hydroxide

3.8

A novel zinc–omega-3 complex that may help calm irritation and support the skin barrier, but research is still limited.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
Read ingredient review

Soothing Agent

Zinc Eicosapentaenoate Hydroxide

Zinc Eicosapentaenoate Hydroxide

3.8

A gentle, zinc-based omega-3 derivative that may help calm irritation and support the skin barrier, though research is still emerging.

Irritation

low

Source

semi-synthetic

beautyskincaresoothing agent
Read ingredient review

Skin conditioning

Zinc Ethylhexanoate

Zinc Ethylhexanoate

3.8

Zinc ethylhexanoate is a gentle, synthetic zinc salt that helps control odor and condition skin without common irritation.

Irritation

low

Source

synthetic

beautyskincaredeodorant
Read ingredient review

Skin conditioning agent

Zinc Fructose Diphosphate

Zinc Fructose Diphosphate

3.8

Zinc Fructose Diphosphate is a gentle, zinc-based ingredient that may help calm skin and support barrier repair, but research is still limited.

Irritation

low

Source

semi-synthetic

beautyskincarehumectant
Read ingredient review

Soothing agent

Zinc Gluconate

Zinc Gluconate

4.2

Zinc gluconate is a well-tolerated form of zinc that helps calm irritation and balance oil production without drying out the skin.

Irritation

low

Source

semi-synthetic

beautyskincaresoothing agent
Read ingredient review

Skin Conditioning Agent

Zinc Glutamate

Zinc Glutamate

4.0

Zinc Glutamate is a gentle, multi-tasking ingredient that helps calm skin, regulate oil, and support barrier health without common zinc irritation.

Irritation

low

Source

semi-synthetic

beautyskincaremineral
Read ingredient review

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

beautyskincareantioxidant
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Soothing agent

Zinc Glycyrrhetinate

ZINC GLYCYRRHETINATE

4.0

A gentle, dual-action ingredient that combines licorice root's anti-inflammatory power with zinc's protective benefits to calm redness and support skin recovery.

Irritation

low

Source

semi-synthetic

beautyskincaresoothing agent
Read ingredient review

Anti-aging agent

Zinc Hexapeptide-11

Zinc Hexapeptide-11

4.0

A synthetic peptide that may help firm skin and soften fine lines, with low irritation risk but limited independent research.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Skin conditioning agent

Zinc Hydrolyzed Collagen

Zinc Hydrolyzed Collagen

3.8

A hybrid ingredient that pairs collagen peptides with zinc, offering potential skin support and antioxidant benefits, though research is still emerging.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
Read ingredient review

Humectant

Zinc Hydrolyzed Hyaluronate

Zinc Hydrolyzed Hyaluronate

4.0

A gentle, hydrating ingredient that pairs hyaluronic acid's moisture-binding power with zinc's calming benefits.

Irritation

low

Source

semi-synthetic

beautyskincarehumectant
Read ingredient review

Buffering Agent

Zinc Hydroxide

Zinc Hydroxide

3.8

Zinc hydroxide is a gentle mineral ingredient that helps balance pH and offers mild soothing and protective benefits for sensitive or irritated skin.

Irritation

low

Source

natural

beautyskincaremineral
Read ingredient review

Soothing Agent

Zinc Indoleacetate Hydroxide

Zinc Indoleacetate Hydroxide

3.8

A gentle zinc compound that may help calm irritation and balance oil production, though research is still limited.

Irritation

low

Source

synthetic

beautyskincaresoothing agent
Read ingredient review

Soothing Agent

Zinc Isomerized Linoleate Hydroxide

Zinc Isomerized Linoleate Hydroxide

3.8

A gentle zinc-based ingredient that may help calm irritation and support the skin barrier, though research is still emerging.

Irritation

low

Source

semi-synthetic

beautyskincaresoothing agent
Read ingredient review

Antimicrobial

Zinc Lactate

Zinc Lactate

4.0

Zinc lactate is a gentle, effective deodorant ingredient that helps neutralize odor without blocking sweat glands, making it a popular alternative to aluminum-based antiperspirants.

Irritation

low

Source

synthetic

beautyskincaredeodorant
Read ingredient review

Thickener

Zinc Laurate

Zinc Laurate

3.8

A gentle thickening and opacifying agent that also helps skin feel smooth, but it's not a star active ingredient.

Irritation

low

Source

synthetic

beautyskincaretexturizer
Read ingredient review

Sebum Regulator

Zinc Lauroyl Aspartate

Zinc Lauroyl Aspartate

4.0

A mild, non-drying zinc compound that helps balance oil production and soothe skin, making it a good choice for oily or combination skin types.

Irritation

low

Source

synthetic

beautyskincaresebum-regulator
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Skin conditioning agent

Zinc Linoleate Hydroxide

ZINC LINOLEATE HYDROXIDE

4.0

A gentle zinc-based ingredient that helps condition skin and provide mild oil control without drying.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
Read ingredient review

Skin conditioning

Zinc Linolenate Hydroxide

Zinc Linolenate Hydroxide

3.8

A gentle zinc-based ingredient that helps condition skin and may offer mild oil-control benefits without common irritation.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
Read ingredient review

Skin conditioning

Zinc Magnesium Aspartate

Zinc Magnesium Aspartate

4.0

A gentle mineral complex that may help calm irritation and support skin barrier function, though research is still emerging.

Irritation

low

Source

semi-synthetic

beautyskincaremineral
Read ingredient review

Binder

Zinc Myristate

Zinc Myristate

4.0

Zinc Myristate is a safe, synthetic powder ingredient that improves the feel and application of makeup, but it offers no active skincare benefits.

Irritation

low

Source

synthetic

beautyskincarecosmetic
Read ingredient review

Skin conditioning

Zinc Neodecanoate

Zinc Neodecanoate

4.0

Zinc Neodecanoate is a gentle, multifunctional ingredient that helps condition skin and may offer mild antimicrobial benefits, making it a good choice for sensitive or acne-prone skin.

Irritation

low

Source

synthetic

beautyskincareconditioning agent
Read ingredient review

Preservative

Zinc Nitrate

Zinc Nitrate

3.0

Zinc nitrate is a synthetic preservative and astringent that can help control bacteria and reduce oil, but it may be drying or irritating for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarepreservative
Read ingredient review

Sunscreen Agent

Zinc Oxide

ZINC OXIDE

4.5

A safe, effective mineral sunscreen that sits on top of skin to reflect UV rays, ideal for sensitive skin.

Irritation

low

Source

natural

beautyskincaresunscreenmineral
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Viscosity Controlling

Zinc Palmitate

Zinc Palmitate

3.8

Zinc Palmitate is a safe, non-irritating ingredient that helps give makeup and creams a smooth, silky feel without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
Read ingredient review

Skin conditioning agent

Zinc Palmitoyl Nonapeptide-14

ZINC PALMITOYL NONAPEPTIDE-14

4.0

A synthetic peptide that may help improve skin firmness and reduce fine lines, with low irritation potential.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Antimicrobial

Zinc Peroxide

ZINC PEROXIDE

3.5

Zinc peroxide offers mild antimicrobial and drying benefits for acne-prone skin, but it can be irritating and is less common than alternatives like benzoyl peroxide.

Irritation

moderate

Source

synthetic

beautyskincareantimicrobial
Read ingredient review

Astringent

Zinc Phenolsulfonate

Zinc Phenolsulfonate

3.8

Zinc Phenolsulfonate helps tighten pores and reduce sweat odor, but it can be drying for sensitive or dry skin types.

Irritation

low

Source

synthetic

beautyskincareastringent
Read ingredient review

Bulking Agent

Zinc Phosphate

Zinc Phosphate

3.5

Zinc Phosphate is a safe, non-irritating mineral powder used to add bulk and opacity to makeup, but it offers no active skincare benefits.

Irritation

low

Source

synthetic

beautyskincaretexturizer
Read ingredient review

Anti-inflammatory

Zinc Picolinate

Zinc Picolinate

4.0

Zinc Picolinate is a gentle, oil-regulating ingredient that helps calm inflammation and may reduce breakouts without drying the skin.

Irritation

low

Source

synthetic

beautyskincareanti-inflammatory
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