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 48 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

Tristearin

Tristearin

4.0

Tristearin is a gentle, plant-derived emollient that softens skin and gives creams a smooth, luxurious feel without clogging pores.

Irritation

low

Source

natural

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Emollient

Tristearyl Citrate

TRISTEARYL CITRATE

4.0

A gentle, plant-derived emollient that softens skin and improves product feel without common irritation or clogging concerns.

Irritation

low

Source

natural

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Emollient

Triundecanoin

Triundecanoin

4.0

Triundecanoin is a lightweight, non-greasy emollient that hydrates and softens skin without clogging pores, making it a good choice for sensitive and acne-prone skin.

Irritation

low

Source

synthetic

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Emollient

Tuberose Flower Wax

POLIANTHES TUBEROSA FLOWER WAX

4.0

Tuberose flower wax is a natural, fragrant wax that softens and protects the skin while adding a subtle floral scent to products.

Irritation

low

Source

natural

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Emollient

Tucuma Fruit Oil

Astrocaryum vulgare fruit oil

4.3

A lightweight, non-greasy Amazonian oil that deeply moisturizes and protects skin with essential fatty acids and antioxidants.

Irritation

low

Source

natural

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Emollient

Tucuma Kernel Oil

Astrocaryum vulgare kernel oil

4.3

A lightweight, non-greasy plant oil that deeply moisturizes and helps restore the skin barrier without clogging pores.

Irritation

low

Source

natural

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Emollient

Tucuma Seed Butter

Astrocaryum Tucuma Seed Butter

4.0

A nourishing, plant-based butter that deeply moisturizes without clogging pores, ideal for dry or sensitive skin.

Irritation

low

Source

natural

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Emollient

Tucuma Seed Oil

Astrocaryum Tucuma Seed Oil

4.3

A rich, non-greasy Amazonian oil that deeply moisturizes and softens skin without clogging pores.

Irritation

low

Source

natural

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Emollient

Tulip Tree Leaf Wax

Liriodendron Tulipifera Leaf Wax

4.0

A gentle, plant-derived wax that helps lock in moisture and gives products a smooth, creamy feel without clogging pores.

Irritation

low

Source

natural

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Emollient

Undecane

UNDECANE

3.8

Undecane is a lightweight, non-greasy emollient that helps skincare products glide on smoothly without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Undecyl Alcohol

UNDECYL ALCOHOL

3.8

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

Irritation

low

Source

synthetic

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Emollient

Undecylpentadecanol

UNDECYLPENTADECANOL

4.0

A gentle, synthetic emollient that softens skin and improves product spreadability without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Vateria Indica Seed Butter

VATERIA INDICA SEED BUTTER

4.0

A nourishing, non-greasy plant butter that softens skin and helps restore the moisture barrier, but research on its benefits is still limited.

Irritation

low

Source

natural

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Emollient

Vegetable Oil

Vegetable Oil

3.8

Vegetable Oil is a basic emollient that softens skin, but its exact benefits depend on the specific plant source, and it may clog pores for some people.

Irritation

low

Source

natural

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Emollient

Vegetal Oils

Vegetal Oil

4.0

Vegetal oils are natural moisturizers that help soften and protect the skin, but their comedogenic potential varies by type.

Irritation

low

Source

natural

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Emollient

Virola Sebifera Nut Oil

VIROLA SEBIFERA NUT OIL

4.0

A rich, plant-based oil that softens and conditions skin with a low risk of irritation, though research on its specific benefits is still limited.

Irritation

low

Source

natural

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Emollient

Virola Seed Butter

VIROLA SURINAMENSIS SEED BUTTER

4.0

A rich, plant-based butter that softens and conditions skin with a high fatty acid content, but research on its specific benefits is still limited.

Irritation

low

Source

natural

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Emollient

Virola Surinamensis Shell Oil

VIROLA SURINAMENSIS SHELL OIL

3.8

A gentle, plant-based emollient that softens skin and locks in moisture, but research on its unique benefits is still limited.

Irritation

low

Source

natural

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Emollient

Vitex Fruit Oil

Vitex Rotundifolia Fruit Oil

3.5

Vitex Fruit Oil is a gentle, antioxidant-rich botanical oil that may help soothe and condition the skin, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

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Emollient

Walnut Seed Butter

Juglans Regia Seed Butter

4.0

Walnut Seed Butter is a nourishing plant-based emollient that helps soften and condition dry skin, but it may be moderately comedogenic for acne-prone individuals.

Irritation

low

Source

natural

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Emollient

Walnut Seed Oil

Juglans Regia Seed Oil

3.8

Walnut Seed Oil is a nourishing emollient rich in omega fatty acids and antioxidants, but its moderate comedogenic rating means it may not suit all skin types, especially acne-prone skin.

Irritation

low

Source

natural

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Emollient

Watanabaea Reniformis Oil

Watanabaea Reniformis Oil

3.5

A gentle, plant-based oil that helps soften and smooth skin, though research on its specific benefits is still limited.

Irritation

low

Source

natural

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Emollient

Water Spinach Oil

Ipomoea Aquatica Oil

3.8

Water Spinach Oil is a gentle, antioxidant-rich plant oil that hydrates and protects skin, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

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Emollient

Whale Oil

WHALE OIL

1.5

Whale oil is an outdated ingredient with ethical and sustainability issues; modern plant-based oils offer safer and more responsible alternatives.

Irritation

low

Source

natural

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Emollient

Wheat Bran Lipids

Triticum Vulgare (Wheat) Bran Lipids

4.0

A gentle, plant-derived lipid that helps replenish the skin barrier and lock in moisture without clogging pores.

Irritation

low

Source

natural

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Emollient

Wheat Flour Lipids

Triticum Vulgare Flour Lipids

4.0

A gentle, plant-derived emollient that helps soften and smooth the skin without clogging pores.

Irritation

low

Source

natural

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Emollient

Wheat Germ

TRITICUM VULGARE GERM

4.0

Wheat germ is a natural emollient rich in vitamin E and fatty acids, great for dry skin but may be too heavy for oily or acne-prone types.

Irritation

low

Source

natural

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Emollient

Wheat Germ & Palm Oil Amino Esters

WHEAT GERM OIL/PALM OIL AMINOPROPANEDIOL ESTERS

3.8

A gentle emollient and emulsifier that helps soften skin and stabilize formulas, but its palm oil sourcing raises sustainability questions.

Irritation

low

Source

semi-synthetic

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Emollient

Wheat Germ Glycerides

Wheat Germ Glycerides

4.0

A gentle, plant-derived emollient that helps replenish the skin barrier and lock in moisture without feeling greasy.

Irritation

low

Source

natural

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Emollient

Wheat Germ Oil

TRITICUM VULGARE GERM OIL

4.0

A nourishing, antioxidant-rich oil that deeply moisturizes but may clog pores for some skin types.

Irritation

low

Source

natural

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Emollient

Wheat Germ Oil PEG-8 Esters

WHEAT GERM OIL PEG-8 ESTERS

3.8

A gentle, water-friendly emollient that helps soften skin and improve product feel, but may not suit those with wheat allergies.

Irritation

low

Source

semi-synthetic

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Emollient

Wheat Germ Oil Unsaponifiables

Triticum Vulgare Germ Oil Unsaponifiables

4.0

Wheat germ oil unsaponifiables are a gentle, nutrient-rich emollient that helps strengthen the skin barrier and soothe dryness without clogging pores.

Irritation

low

Source

natural

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Emollient

White Lupin Seed Oil

Lupinus Albus Seed Oil

4.0

A nourishing, non-greasy oil that hydrates and helps maintain a healthy skin barrier with a low risk of irritation.

Irritation

low

Source

natural

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Emollient

White Lupin Unsaponifiables

LUPINUS ALBUS OIL UNSAPONIFIABLES

4.0

A gentle, plant-derived lipid that helps calm irritation and strengthen the skin barrier without clogging pores.

Irritation

low

Source

natural

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Emollient

Wild Strawberry Seed Butter

FRAGARIA VESCA SEED BUTTER

4.0

A gentle, plant-based butter that softens skin without clogging pores, ideal for dry or sensitive skin types.

Irritation

low

Source

natural

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Emollient

Wild Strawberry Seed Oil

FRAGARIA VIRGINIANA SEED OIL

4.0

A gentle, non-greasy seed oil rich in linoleic acid and vitamin E, ideal for normal to dry skin types seeking lightweight hydration.

Irritation

low

Source

natural

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Emollient

Ximenia Americana Oil PEG-8 Esters

XIMENIA AMERICANA SEED OIL PEG-8 ESTERS

4.0

A gentle, semi-synthetic emollient that helps soften skin and improve product texture, with low irritation potential.

Irritation

low

Source

semi-synthetic

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Emollient

Xylitan Sesquicaprylate

Xylitan Sesquicaprylate

4.0

A gentle, sugar-derived emollient that helps products spread smoothly and leaves skin feeling soft without greasiness.

Irritation

low

Source

semi-synthetic

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Emollient

Xylityl Cocoate

Xylityl Cocoate

4.5

Xylityl Cocoate is a mild, sugar-based emollient that hydrates and softens skin without clogging pores, making it a great choice for sensitive and acne-prone skin.

Irritation

low

Source

semi-synthetic

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Emollient

Xylityl Sesquicaprylate

Xylityl Sesquicaprylate

4.0

A gentle, lightweight emollient that hydrates and helps control odor-causing bacteria, making it a smart choice for sensitive or acne-prone skin.

Irritation

low

Source

semi-synthetic

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Emollient

Xylyl Caprate/Caprylate

XYLITYL CAPRATE/CAPRYLATE

4.0

A gentle, plant-derived emollient that hydrates and softens skin without clogging pores, making it a great option for sensitive and acne-prone skin types.

Irritation

low

Source

semi-synthetic

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Emollient

Yellowhorn Seed Oil

XANTHOCERAS SORBIFOLIUM SEED OIL

4.0

A gentle, plant-based oil that hydrates and softens skin without clogging pores, but research on its specific benefits is still limited.

Irritation

low

Source

natural

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Emollient

Ylang-Ylang Flower Wax

Cananga Odorata Flower Cera

3.8

A gentle, natural wax that adds emollience and a subtle floral scent to skincare products, but may cause sensitivity in those allergic to ylang-ylang.

Irritation

low

Source

natural

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Emollient

Yuzu Seed Oil

Citrus Junos Seed Oil

4.0

Yuzu Seed Oil is a lightweight, antioxidant-rich oil that helps moisturize and protect the skin without clogging pores.

Irritation

low

Source

natural

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