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 2,268
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

Emollient

Trichodesma Zeylanicum Oil

TRICHODESMA ZEYLANICUM OIL

4.0

A gentle, fatty-acid-rich oil that hydrates and soothes without clogging pores—great for dry or sensitive skin.

Irritation

low

Source

natural

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Emollient

Tricyclodecanemethyl Isostearate

TRICYCLODECANEMETHYL ISOSTEARATE

4.0

A lightweight synthetic emollient that helps skin feel smooth and soft without clogging pores, commonly used in makeup and moisturizers.

Irritation

low

Source

synthetic

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Emollient

Tridecane

TRIDECANE

3.8

Tridecane is a gentle, lightweight emollient that helps products glide on smoothly without a greasy feel.

Irritation

low

Source

synthetic

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Emollient

Tridecyl Alcohol

TRIDECYL ALCOHOL

4.0

A gentle fatty alcohol that softens skin and improves product texture without common irritation.

Irritation

low

Source

synthetic

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Emollient

Tridecyl Behenate

Tridecyl Behenate

4.2

A gentle, non-greasy emollient that softens skin and improves product texture with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emollient

Tridecyl Cocoate

TRIDECYL COCOATE

4.3

A gentle, plant-based emollient that hydrates without greasiness, suitable for most skin types including sensitive and oily skin.

Irritation

low

Source

natural

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Emollient

Tridecyl Erucate

Tridecyl Erucate

4.0

Tridecyl Erucate is a gentle, non-greasy emollient that helps soften and smooth the skin without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Tridecyl Ethylhexanoate

Tridecyl Ethylhexanoate

4.0

A lightweight synthetic emollient that softens skin without clogging pores, ideal for oily and combination skin types.

Irritation

low

Source

synthetic

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Emollient

Tridecyl Isononanoate

TRIDECYL ISONONANOATE

4.0

A lightweight synthetic emollient that softens skin without clogging pores, ideal for oily or combination skin types.

Irritation

low

Source

synthetic

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Emollient

Tridecyl Laurate

Tridecyl Laurate

4.0

A lightweight, non-greasy emollient that helps soften skin and improve product texture without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Tridecyl Myristate

Tridecyl Myristate

3.8

Tridecyl Myristate is a reliable emollient that softens skin but may clog pores for acne-prone individuals.

Irritation

low

Source

synthetic

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Emollient

Tridecyl Neopentanoate

TRIDECYL NEOPENTANOATE

4.0

A lightweight synthetic emollient that softens skin without clogging pores, ideal for oily or acne-prone types.

Irritation

low

Source

synthetic

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Emollient

Tridecyl Stearate

TRIDECYL STEARATE

4.0

Tridecyl Stearate is a gentle emollient that helps soften and smooth the skin without feeling greasy.

Irritation

low

Source

synthetic

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Emollient

Tridecyl Stearoyl Stearate

TRIDECYL STEAROYL STEARATE

4.0

A gentle, non-greasy emollient that helps soften skin and improve product texture without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Tridecyl Trimellitate

TRIDECYL TRIMELLITATE

4.0

Tridecyl Trimellitate is a lightweight synthetic emollient that helps skincare products feel silky and spread smoothly without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Triethylhexanoin

TRIETHYLHEXANOIN

4.2

A lightweight, non-greasy emollient that improves product texture and skin feel without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Triethylhexyl Citrate

Triethylhexyl Citrate

4.0

A lightweight, non-greasy emollient derived from citric acid that improves product texture and skin feel.

Irritation

low

Source

semi-synthetic

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Emollient

Triethylhexyl Trimellitate

Triethylhexyl Trimellitate

4.0

A lightweight, non-greasy emollient that helps products glide on smoothly and resist water, with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emollient

Triheptanoin

Triheptanoin

4.3

Triheptanoin is a silky, non-greasy emollient that hydrates and softens skin, making it a great choice for sensitive and oily skin types.

Irritation

low

Source

natural

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Emollient

Triheptylundecanoin

Triheptylundecanoin

4.0

A lightweight synthetic emollient that softens skin without a greasy feel, ideal for oilier or acne-prone skin types.

Irritation

low

Source

synthetic

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Emollient

Trihexyldecyl Citrate

Trihexyldecyl Citrate

4.0

A gentle, non-greasy emollient derived from citric acid and fatty alcohols that softens skin and improves product feel without clogging pores.

Irritation

low

Source

natural

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Emollient

Trihydroxymethoxystearin

Trihydroxymethoxystearin

4.0

A gentle synthetic emollient that makes products feel silky and spread easily without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Triisocetyl Citrate

Triisocetyl Citrate

4.3

A gentle, plant-derived emollient that hydrates and softens skin without clogging pores, ideal for sensitive and oily skin types.

Irritation

low

Source

natural

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Emollient

Triisodecyl Trimellitate

Triisodecyl Trimellitate

4.0

A lightweight synthetic emollient that gives a silky, non-greasy feel and is generally well-tolerated by most skin types.

Irritation

low

Source

synthetic

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Emollient

Triisononanoin

Triisononanoin

4.0

Triisononanoin is a lightweight, non-greasy emollient that softens skin and improves product feel without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Triisopropyl Citrate

Triisopropyl Citrate

4.0

A lightweight, non-greasy emollient that helps skin feel soft and smooth without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Triisopropyl Trilinoleate

Triisopropyl Trilinoleate

4.0

A lightweight synthetic ester that softens skin without clogging pores, ideal for oily or combination skin types.

Irritation

low

Source

synthetic

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Emollient

Triisostearin

Triisostearin

4.0

Triisostearin is a lightweight, non-greasy emollient that helps moisturize and improve product texture, with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emollient

Triisostearyl Citrate

Triisostearyl Citrate

4.0

A gentle, non-greasy emollient that helps soften skin and improve product texture, with a very low risk of irritation or clogged pores.

Irritation

low

Source

semi-synthetic

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Emollient

Triisostearyl Trilinoleate

Triisostearyl Trilinoleate

4.0

A gentle, plant-derived emollient that helps soften and smooth skin without clogging pores, commonly found in lip and makeup products.

Irritation

low

Source

natural

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Emollient

Triisotridecyl Trimellitate

Triisotridecyl Trimellitate

4.0

A lightweight, non-greasy emollient that helps soften skin and improve product texture without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Trilaurin

Trilaurin

4.0

Trilaurin is a gentle, coconut-derived emollient that helps soften skin without clogging pores, making it a safe choice for most skin types.

Irritation

low

Source

natural

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Emollient

Trilauryl Citrate

Trilauryl Citrate

4.0

A gentle, non-greasy emollient that softens skin and improves the feel of creams and sunscreens without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Trilauryl Phosphate

TRILAURYL PHOSPHATE

3.8

Trilauryl Phosphate is a gentle synthetic emollient that helps products spread smoothly without heavy greasiness, but it's not a star active ingredient.

Irritation

low

Source

synthetic

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Emollient

Trilinoleic Acid

TRILINOLEIC ACID

4.0

A gentle, lipid-based emollient that helps reinforce the skin barrier without clogging pores.

Irritation

low

Source

natural

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Emollient

Trilinolein

TRILINOLEIN

4.0

Trilinolein is a gentle, plant-derived emollient that helps soften and smooth skin while supporting the skin barrier with linoleic acid.

Irritation

low

Source

natural

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Emollient

Trilinolenin

Trilinolenin

4.0

Trilinolenin is a gentle, omega-3-rich emollient that helps soften and condition the skin without clogging pores, making it suitable for most skin types.

Irritation

low

Source

natural

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Emollient

Trimethylhexyl Propionate

TRIMETHYLHEXYL PROPIONATE

4.0

A lightweight, non-greasy emollient that helps soften skin and improve product texture without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Trimethylolpropane Tricocoate

TRIMETHYLOLPROPANE TRICOCOATE

4.0

A gentle, non-greasy emollient derived from coconut oil that helps skin feel soft and smooth without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Trimethylolpropane Triisostearate

Trimethylolpropane Triisostearate

4.0

A lightweight, non-greasy emollient that helps products glide on smoothly and leaves skin feeling soft without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Trimyristin

Trimyristin

4.0

A gentle, plant-derived emollient that helps maintain skin softness without clogging pores.

Irritation

low

Source

natural

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Emollient

Trioctyldodecyl Borate

TRIOCTYLDODECYL BORATE

4.0

A lightweight synthetic emollient that spreads easily and leaves a non-greasy, velvety finish on skin.

Irritation

low

Source

synthetic

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Emollient

Triolein

Triolein

4.0

Triolein is a gentle, plant-derived emollient that softens and smooths skin without clogging pores, making it a safe choice for most skin types.

Irritation

low

Source

natural

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Emollient

Trioleyl Citrate

Trioleyl Citrate

4.0

Trioleyl Citrate is a gentle, non-greasy emollient that helps soften skin and improve the feel of your skincare products.

Irritation

low

Source

semi-synthetic

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Emollient

Trioleyl Phosphate

TRIOLEYL PHOSPHATE

3.8

Trioleyl Phosphate is a gentle synthetic emollient that helps skincare products feel silky and spread smoothly, with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emollient

Tripalmitin

Tripalmitin

4.0

Tripalmitin is a gentle, plant-derived emollient that helps restore softness and smoothness to the skin without clogging pores.

Irritation

low

Source

natural

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Emollient

Tripalmitolein

Tripalmitolein

4.0

Tripalmitolein is a gentle, plant-derived emollient that helps soften skin without clogging pores, making it a good choice for dry or sensitive skin types.

Irritation

low

Source

natural

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Emollient

Tripelargonin

Tripelargonin

4.0

Tripelargonin is a lightweight, non-greasy emollient that helps moisturize without clogging pores, making it a good option for oily or acne-prone skin.

Irritation

low

Source

synthetic

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Emollient

Tripropylene Glycol Citrate

Tripropylene Glycol Citrate

4.0

A gentle, synthetic emollient and solvent that helps products spread smoothly and prevents nail polish from becoming brittle.

Irritation

low

Source

synthetic

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Emollient

Triricinolein

Triricinolein

4.0

Triricinolein is a gentle, castor-oil-derived emollient that softens skin and helps lock in moisture without clogging pores.

Irritation

low

Source

natural

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