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

Tahitian Vanilla Fruit Extract

Vanilla Tahitensis Fruit Extract

3.8

A gentle, antioxidant-rich botanical extract that adds a pleasant vanilla scent, but its skin benefits are less studied than those of other antioxidants.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Tahitian Vanilla Seed

Vanilla Tahitensis Seed

3.8

Tahitian vanilla seed offers gentle exfoliation and antioxidant protection, but its benefits are less studied than those of more common vanilla extracts.

Irritation

low

Source

natural

beautyskincareexfoliant
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Antioxidant

Taisou Ekisu

Taisou Ekisu

4.0

Taisou Ekisu (jujube extract) is a gentle, antioxidant-rich botanical that helps soothe skin and protect against environmental stress, but it is not a standout active for dramatic results.

Irritation

low

Source

natural

beautyskincareantioxidantsoothing
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Fragrance

Taiwan Cypress Wood Oil

Chamaecyparis formosensis wood oil

3.8

A fragrant wood oil with limited research on skincare benefits; best appreciated for its scent rather than proven skin effects.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Antioxidant

Taiwan Fig Root Extract

Ficus Formosana Root Extract

3.5

A gentle botanical extract with antioxidant potential, but research is still early and benefits are not yet well-established.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Taiwan Meadowsweet Extract

Filipendula Formosa Extract

3.8

A gentle botanical extract with antioxidant and soothing potential, but human skin research is limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Absorbent

Talc

Talc

3.5

Talc is a widely used mineral powder that absorbs oil and improves texture, but its safety has been debated due to potential asbestos contamination and inhalation risks.

Irritation

low

Source

natural

beautyskincareabsorbent
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Antioxidant

Talinum Paniculatum Extract

Talinum Paniculatum Extract

3.8

A gentle, antioxidant-rich plant extract that may help calm skin and protect against environmental stress, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Emollient

Tall Oil

TALL OIL

3.5

Tall oil is a natural emollient from pine trees, but its comedogenic potential means it's best for non-acne-prone skin.

Irritation

low

Source

natural

beautyskincareemollient
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Film Former

Tall Oil Copolymer

Oxidized Tall Oil Acids/Neopentyl Glycol Copolymer

3.8

A film-forming polymer from wood pulp byproducts that helps products stay put and resist water, but offers no active skincare benefit.

Irritation

low

Source

semi-synthetic

beautyskincarehaircare
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Emollient

Tall Oil Glycerides

Tall Oil Glycerides

4.0

A gentle, plant-based emollient that softens and smooths skin without clogging pores, ideal for dry or sensitive skin.

Irritation

low

Source

natural

beautyskincareemollient
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Antistatic Agent

Tall Oil Imidazolinium Chloride

TALL OIL BENZYL HYDROXYETHYL IMIDAZOLINIUM CHLORIDE

3.0

A conditioning agent that reduces static and improves manageability, but may cause irritation for sensitive scalps at higher concentrations.

Irritation

moderate

Source

semi-synthetic

beautyskincarehaircare
Read ingredient review

Surfactant

Tallamide DEA

Tallamide DEA

3.5

An effective foam booster and thickener, but may cause irritation for sensitive skin and raises some environmental concerns.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Emollient

Tallow

Tallow

3.5

Tallow is a traditional emollient that mimics skin's natural oils, but its comedogenic rating means it may clog pores for some people.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Tallow Alcohol

Tallow Alcohol

3.5

Tallow alcohol is a natural fatty alcohol that softens skin and thickens formulas, but it may be comedogenic for some and is not suitable for vegans.

Irritation

low

Source

natural

beautyskincareemollient
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Surfactant

Tallow Amide

Tallow Amide

3.5

Tallow Amide is an effective cleanser and foam booster from animal fat, but may be drying for sensitive or dry skin.

Irritation

moderate

Source

natural

beautyskincarecleansing agent
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Surfactant

Tallow Amidopropyl Dimethylamine

TALLAMIDOPROPYL DIMETHYLAMINE

3.5

A fatty amine conditioner from animal fat that softens hair and skin but may be too heavy for oily or acne-prone types.

Irritation

moderate

Source

natural

beautyskincarehaircareconditioning agent
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Film Former

Tallow Amine Copolymer

BIS-HYDROGENATED TALLOW AMINE DILINOLEIC ACID/ETHYLENEDIAMINE COPOLYMER

3.5

A film-forming polymer that helps products stay put, but its animal-derived origin and potential to feel heavy may not suit everyone.

Irritation

low

Source

semi-synthetic

beautyskincarefilm-former
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Surfactant

Tallow Betaine

Tallow Betaine

4.0

Tallow betaine is a mild, naturally-derived surfactant that cleanses without stripping the skin, making it a good choice for sensitive skin.

Irritation

low

Source

natural

beautyskincaresurfactant
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Surfactant

Tallow Dihydroxyethyl Betaine

Tallow Dihydroxyethyl Betaine

3.8

A gentle, animal-derived surfactant that cleans without stripping the skin—good for sensitive skin but not suitable for vegans.

Irritation

low

Source

natural

beautyskincarecleanser
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Surfactant

Tallow Hydroxyethyl Imidazoline

Tallow Hydroxyethyl Imidazoline

3.5

A gentle, animal-derived surfactant that helps cleansers feel less stripping, but may be too heavy for oily or acne-prone skin.

Irritation

low

Source

natural

beautyskincaresurfactant
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Antistatic Agent

Tallow Trihydroxyethylammonium Acetate

Tallow Trihydroxyethylammonium Acetate

3.5

A gentle conditioning ingredient from animal fat that softens hair and reduces static, but may be too heavy for oily or acne-prone skin.

Irritation

low

Source

natural

beautyskincarehaircareconditioning agent
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Antistatic Agent

Tallowalkonium Chloride

TALLOWALKONIUM CHLORIDE

3.5

An effective conditioning and antistatic ingredient derived from animal fat, but may cause irritation or clog pores for sensitive or acne-prone skin.

Irritation

moderate

Source

semi-synthetic

beautyskincarehaircare
Read ingredient review

Surfactant

Tallowamide DEA

TALLOWAMIDE DEA

3.0

Tallowamide DEA is a foam booster and thickener from animal fat, but it may cause irritation and has raised concerns over potential contamination with cancer-causing impurities.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Foam Booster

Tallowamide MEA

Tallowamide MEA

3.5

A semi-synthetic foam booster from animal fat that can improve lather but may be drying or irritating for sensitive skin.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Tallowamidopropyl Betaine

Tallowamidopropyl Betaine

3.8

A mild, animal-derived surfactant that effectively cleanses without stripping the skin, but may not suit vegans or those avoiding animal ingredients.

Irritation

low

Source

natural

beautyskincaresurfactant
Read ingredient review

Surfactant

Tallowamidopropyl Dimethylamine

TALLOWAMIDOPROPYL DIMETHYLAMINE

3.5

A gentle conditioning ingredient from animal fat that softens hair but may be too heavy for oily scalps or acne-prone skin.

Irritation

low

Source

natural

beautyskincarehaircare
Read ingredient review

Surfactant

Tallowamidopropylamine Oxide

TALLOWAMIDOPROPYLAMINE OXIDE

3.5

An effective foaming and cleansing agent derived from animal fat, but may cause irritation for sensitive skin and raises ethical concerns for those avoiding animal-derived ingredients.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

Tallowaminopropylamine

TALLOWAMINOPROPYLAMINE

3.5

Tallowaminopropylamine is a fatty amine from animal fat that helps condition hair and stabilize formulas, but it may be irritating for sensitive skin and is not suitable for vegans.

Irritation

moderate

Source

natural

beautyskincaresurfactant
Read ingredient review

Antistatic Agent

Tallowdimonium Propyltrimonium Dichloride

TALLOWDIMONIUM PROPYLTRIMONIUM DICHLORIDE

3.5

A conditioning ingredient derived from animal fat that reduces static and softens hair, but may be too heavy for fine or oily hair types.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
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Emulsifier

Talloweth-18

TALLOWETH-18

3.8

Talloweth-18 is an effective emulsifier derived from animal fat, but its moderate irritation and comedogenic potential make it better suited for rinse-off cleansers than leave-on products.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Talloweth-4

TALLOWETH-4

3.5

Talloweth-4 is a functional but controversial emulsifier—effective for cleansing but may cause irritation for sensitive skin and raises ethical concerns due to its animal-derived origin.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Emulsifier

Talloweth-5

TALLOWETH-5

3.5

Talloweth-5 is an effective emulsifier but may cause irritation for sensitive skin and raises ethical concerns due to its animal-derived origin.

Irritation

moderate

Source

semi-synthetic

beautyskincareemulsifier
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Surfactant

Talloweth-6

TALLOWETH-6

3.5

Talloweth-6 is a workhorse emulsifier in cleansers, but its animal-derived origin and potential for mild irritation may not suit all preferences.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Emulsifier

Talloweth-7

TALLOWETH-7

3.5

Talloweth-7 is a functional but controversial emulsifier — effective at blending ingredients but derived from animal fat and may cause irritation for sensitive skin.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Emulsifier

Tallowoyl Ethyl Glucoside

Tallowoyl Ethyl Glucoside

4.0

A gentle, animal-derived emulsifier that stabilizes creams and lotions without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Antistatic Agent

Tallowtrimonium Chloride

Tallowtrimonium Chloride

3.8

Tallowtrimonium Chloride is an effective conditioning ingredient derived from animal fats, but it may cause irritation or clog pores in sensitive individuals.

Irritation

moderate

Source

semi-synthetic

beautyskincarehaircare
Read ingredient review

Fragrance

Tamala Leaf Oil

Cinnamomum Tamala Leaf Oil

3.5

A fragrant essential oil with some antimicrobial potential, but its strong aroma and potential for skin irritation limit its use in sensitive skin formulations.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Emollient

Tamanu Fruit Oil

CALOPHYLLUM TACAMAHACA FRUIT OIL

4.0

Tamanu fruit oil is a gentle, plant-based emollient that helps soften and soothe the skin, with some research suggesting it may support a healthy-looking complexion.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Tamanu Oil

CALOPHYLLUM TACAMAHACA SEED OIL

4.3

A soothing, nutrient-rich oil that helps calm irritation and deeply moisturize without clogging pores.

Irritation

low

Source

natural

beautyskincaremoisturizer
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Soothing agent

Tamanu Seed Extract

CALOPHYLLUM TACAMAHACA SEED EXTRACT

4.0

A gentle, plant-based extract that helps calm irritation and provides antioxidant protection, but more human studies are needed to confirm its benefits.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Humectant

Tamarind Fruit Juice

TAMARINDUS INDICA FRUIT JUICE

4.0

Tamarind fruit juice is a gentle, natural humectant that helps hydrate and lightly exfoliate skin, making it a good option for those seeking plant-based skincare ingredients.

Irritation

low

Source

natural

beautyskincarehumectant
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Thickener

Tamarind Seed Gum

TAMARINDUS INDICA SEED GUM

4.0

A gentle, plant-based thickener and film former that can add a silky feel and light hydration to skincare products.

Irritation

low

Source

natural

beautyskincarethickener
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Antioxidant

Tambourissa Bark Extract

TAMBOURISSA TRICHOPHYLLA BARK EXTRACT

3.8

A gentle, antioxidant-rich bark extract that may help calm skin and fight environmental stress, though research is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Tambourissa Leaf Extract

TAMBOURISSA TRICHOPHYLLA LEAF EXTRACT

3.8

A gentle botanical extract with antioxidant potential, but research is limited and it's not a standout ingredient.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Tamurana Fruit Extract

Citrus Tamurana Fruit Extract

3.8

A gentle, antioxidant-rich fruit extract that may help brighten and soothe skin, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Tamurana Orange Peel Extract

Citrus Tamurana Peel Extract

4.0

A gentle, antioxidant-rich citrus extract that may help brighten skin and protect against environmental stress, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Botanical Extract

Tanacetum Cinerariifolium Root Extract

TANACETUM CINERARIIFOLIUM ROOT EXTRACT

2.5

A botanical root extract with insect-repelling history, but its use in skincare is limited and may cause irritation for sensitive skin.

Irritation

moderate

Source

natural

beautyskincarebotanical extract
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Absorbent

Tanakura Clay

Tanakura Clay

4.0

A gentle, mineral-rich clay that helps absorb excess oil and impurities without stripping the skin.

Irritation

low

Source

natural

beautyskincareabsorbent
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Antioxidant

Tangelo Fruit Juice

CITRUS TANGELO FRUIT JUICE

3.5

A gentle fruit juice that offers mild exfoliation and antioxidant benefits, but may cause irritation for sensitive skin.

Irritation

moderate

Source

natural

beautyskincareantioxidant
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Exfoliant

Tangelo Fruit Powder

Citrus Tangelo Fruit Powder

3.8

A gentle, natural exfoliating powder from tangelo fruit that offers mild antioxidant benefits, best for those who prefer fruit-based skincare.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Tangelo Peel Powder

Citrus Tangelo Peel Powder

3.8

A gentle, natural exfoliant that also delivers antioxidants from citrus peels, but its effectiveness and stability depend heavily on how it's processed and formulated.

Irritation

low

Source

natural

beautyskincareexfoliant
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Antioxidant

Tangerine Extract

CITRUS TANGERINA EXTRACT

4.0

Tangerine extract offers gentle antioxidant protection and a subtle brightening effect, but its benefits are mild compared to more potent vitamin C forms.

Irritation

low

Source

natural

beautyskincareantioxidant
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Skin conditioning agent

Tangerine Fruit Water

CITRUS TANGERINA FRUIT WATER

3.8

Tangerine fruit water is a gentle, water-based botanical that adds light hydration and a subtle citrus scent, but its benefits beyond fragrance are not well-studied.

Irritation

low

Source

natural

beautyskincarebotanical
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Fragrance

Tangerine Leaf Oil

Citrus Reticulata Leaf Oil

3.8

A fragrant essential oil that adds a fresh citrus scent to products, but may cause irritation in sensitive skin and offers limited proven skincare benefits.

Irritation

moderate

Source

natural

beautyskincarefragrance
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