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

Brazilian Pequi Seed Oil

Caryocar brasiliense seed oil

4.0

A gentle, antioxidant-rich oil that helps moisturize and protect the skin without clogging pores.

Irritation

low

Source

natural

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Emollient

Brazilian Seed Ester

LAURYL CARPOTROCHE BRASILIENSIS SEEDATE

4.0

A gentle, plant-based emollient that softens and smooths skin with a lightweight feel, though research on its specific benefits is still limited.

Irritation

low

Source

natural

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Emollient

Broom Flower Wax

CYTISUS SCOPARIUS FLOWER WAX

4.0

A gentle plant wax that adds richness and stability to balms and creams without common irritation.

Irritation

low

Source

natural

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Emollient

Bubulum Oil

Bubulum Oil

3.5

Bubulum oil is a traditional animal-derived emollient that softens skin but may clog pores for some.

Irritation

low

Source

natural

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Emollient

Burdock Seed Oil

Arctium Lappa Seed Oil

4.0

Burdock seed oil is a gentle, antioxidant-rich oil that helps soothe and moisturize skin without clogging pores.

Irritation

low

Source

natural

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Emollient

Buriti Fruit Oil

Mauritia Flexuosa Fruit Oil

4.3

A lightweight, antioxidant-rich oil that hydrates and protects skin without clogging pores.

Irritation

low

Source

natural

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Emollient

Buriti Seed Oil PEG-8 Esters

MAURITIA FLEXUOSA SEED OIL PEG-8 ESTERS

3.8

A gentle, semi-synthetic emollient derived from buriti seed oil that helps soften and condition skin without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Buriti Seed Oil Polyglyceryl-6 Esters

Mauritia Flexuosa Seed Oil Polyglyceryl-6 Esters

4.3

A skin-friendly, plant-based emulsifier that hydrates and stabilizes formulas without clogging pores or causing irritation.

Irritation

low

Source

semi-synthetic

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Emollient

Bursera Graveolens Fruit Oil

BURSERA GRAVEOLENS FRUIT OIL

4.0

A gentle, aromatic oil from the Palo Santo tree that may offer antioxidant benefits and a pleasant scent, but research is limited.

Irritation

low

Source

natural

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Emollient

Butanediol Bisdecanoate

1,4-BUTANEDIOL BISDECANOATE

4.0

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

Irritation

low

Source

synthetic

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Emollient

Buteth-2 Acetate

BUTETH-2 ACETATE

3.5

A mild synthetic emollient that helps products spread smoothly and leaves skin feeling soft, but offers no active skincare benefits.

Irritation

low

Source

synthetic

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Emollient

Butoxyethyl Stearate

Butoxyethyl Stearate

3.5

A synthetic emollient that makes products feel silky, but may clog pores for some skin types.

Irritation

low

Source

synthetic

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Emollient

Butter Decyl Esters

Butter Decyl Esters

4.3

A lightweight, plant-based emollient that hydrates and softens skin without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Butyl Acetyl Ricinoleate

Butyl Acetyl Ricinoleate

4.0

A gentle, non-greasy emollient derived from castor oil that helps products glide on smoothly and keeps skin feeling soft.

Irritation

low

Source

semi-synthetic

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Emollient

Butyl Avocadate

Butyl Avocadate

4.0

A lightweight, non-greasy emollient that mimics the skin's natural lipids, offering hydration without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Butyl Babassuate

Butyl Babassuate

4.3

A lightweight, plant-based emollient that hydrates without greasiness, suitable for most skin types.

Irritation

low

Source

natural

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Emollient

Butyl Butyrolactate

Butyl Butyrolactate

3.8

Butyl Butyrolactate is a gentle synthetic emollient that improves product texture and skin feel without common irritation risks.

Irritation

low

Source

synthetic

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Emollient

Butyl Hexanoate

Butyl Hexanoate

4.0

Butyl Hexanoate is a lightweight synthetic ester that softens and smooths skin without a greasy feel, making it a popular choice in non-oily formulations.

Irritation

low

Source

synthetic

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Emollient

Butyl Isohexanoate

Butyl Isohexanoate

4.0

A lightweight synthetic ester that softens skin without a greasy feel, generally well-tolerated.

Irritation

low

Source

synthetic

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Emollient

Butyl Isostearate

Butyl Isostearate

4.0

Butyl Isostearate is 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

Butyl Myristate

Butyl Myristate

3.8

Butyl Myristate is a lightweight emollient that softens skin and improves product feel, but it may clog pores for some people.

Irritation

low

Source

synthetic

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Emollient

Butyl Octanoate

Butyl Octanoate

4.0

Butyl Octanoate is a lightweight synthetic emollient that helps soften skin and improve product texture without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Butyl Oleate

Butyl Oleate

3.8

Butyl Oleate is a lightweight emollient that helps soften skin and improve product texture, but it may be moderately comedogenic for acne-prone individuals.

Irritation

low

Source

semi-synthetic

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Emollient

Butyl Stearate

Butyl Stearate

3.8

Butyl Stearate is a lightweight emollient that helps products glide on smoothly, but it may clog pores for acne-prone skin.

Irritation

low

Source

synthetic

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Emollient

Butyl Undecenoate

Butyl Undecenoate

3.8

Butyl Undecenoate is a lightweight synthetic emollient that helps products glide on smoothly without a greasy feel.

Irritation

low

Source

synthetic

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Emollient

Butylene Glycol Behenate

Butylene Glycol Behenate

4.0

A gentle synthetic emollient that helps creams feel silky and spread easily without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Butylene Glycol Cocoate

Butylene Glycol Cocoate

4.0

A gentle, coconut-derived emollient that softens skin without clogging pores, ideal for sensitive and dry skin types.

Irritation

low

Source

semi-synthetic

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Emollient

Butylene Glycol Diisononanoate

Butylene Glycol Diisononanoate

4.0

A lightweight synthetic emollient that softens skin without clogging pores, ideal for oil-free and non-greasy formulas.

Irritation

low

Source

synthetic

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Emollient

Butylene Glycol Isostearate

Butylene Glycol Isostearate

3.8

A synthetic emollient that softens skin and helps products spread smoothly, but may clog pores for some people.

Irritation

low

Source

synthetic

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Emollient

Butylene Glycol Laurate

Butylene Glycol Laurate

4.0

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

Irritation

low

Source

synthetic

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Emollient

Butylene Glycol Montanate

Butylene Glycol Montanate

4.0

A gentle wax ester that helps thicken and stabilize creams and lip products without common irritation.

Irritation

low

Source

semi-synthetic

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Emollient

Butylene Glycol Palmitate

Butylene Glycol Palmitate

4.0

A gentle synthetic emollient that helps soften skin and improve product texture without common irritation or clogging concerns.

Irritation

low

Source

synthetic

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Emollient

Butyloctanoic Acid

Butyloctanoic Acid

4.0

A lightweight, non-greasy emollient that helps soften skin without clogging pores.

Irritation

low

Source

synthetic

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Solvent

Butyloctanol

Butyloctanol

4.0

A lightweight, non-greasy fatty alcohol that helps dissolve other ingredients and leaves skin feeling smooth without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Butyloctyl Beeswax

Butyloctyl Beeswax

4.0

A gentle, semi-synthetic wax that improves product texture and stability without common beeswax drawbacks.

Irritation

low

Source

semi-synthetic

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Emollient

Butyloctyl Behenate

Butyloctyl Behenate

4.2

A lightweight, non-greasy emollient that makes products feel silky and spread smoothly, with a very low risk of irritation or clogging pores.

Irritation

low

Source

synthetic

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Emollient

Butyloctyl Benzoate

Butyloctyl Benzoate

4.0

A lightweight, synthetic emollient that improves product texture and spreadability without clogging pores or feeling heavy.

Irritation

low

Source

synthetic

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Emollient

Butyloctyl Candelillate

Butyloctyl Candelillate

4.0

A gentle, plant-based wax ester that gives products a smooth, non-greasy feel and helps stabilize formulas.

Irritation

low

Source

natural

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Emollient

Butyloctyl Cetearyl Ether

Butyloctyl Cetearyl Ether

4.0

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

Irritation

low

Source

synthetic

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Emollient

Butyloctyl Oleate

Butyloctyl Oleate

4.0

A lightweight, non-greasy emollient that improves product feel and skin softness with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emollient

Butyloctyl Palmitate

Butyloctyl Palmitate

4.0

A lightweight, non-greasy emollient that spreads easily and is generally well-tolerated, making it a common choice for moisturizers and sunscreens.

Irritation

low

Source

synthetic

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Emollient

Butyrum

Butyrum

4.0

Butyrum is a natural butter that softens and protects skin, but its comedogenic potential depends on the specific plant source.

Irritation

low

Source

natural

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Emollient

C10 Alkyl Acetate

C10-11 Alkyl Acetate

4.0

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

Irritation

low

Source

synthetic

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Solvent

C10-11 Isoparaffin

C10-11 Isoparaffin

3.5

A gentle, lightweight synthetic oil that helps products spread smoothly and leaves skin feeling soft without clogging pores.

Irritation

low

Source

synthetic

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Emollient

C10-12 Alkane/Cycloalkane

C10-12 ALKANE/CYCLOALKANE

4.0

A lightweight, non-greasy emollient that helps products spread smoothly and evaporate quickly without clogging pores.

Irritation

low

Source

synthetic

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Emollient

C10-18 Triglycerides

C10-18 Triglycerides

4.3

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

Irritation

low

Source

natural

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Emollient

C10-40 Isoalkyl Acid

C10-40 Isoalkyl Acid

3.5

A gentle synthetic fatty acid that helps skin feel smooth and soft without clogging pores.

Irritation

low

Source

synthetic

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Emollient

C10-40 Isoalkyl Acid Glyceride

C10-40 Isoalkyl Acid Glyceride

4.0

A gentle synthetic emollient that helps moisturize without clogging pores, making it a good option for sensitive or acne-prone skin.

Irritation

low

Source

synthetic

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Emollient

C10-40 Isoalkyl Acid Triglyceride

C10-40 Isoalkyl Acid Triglyceride

4.0

A lightweight, non-greasy emollient that improves product feel and spreadability with a very low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emollient

C11-12 Isoparaffin

C11-12 Isoparaffin

3.5

A safe, lightweight emollient that helps products spread smoothly and evaporates quickly, leaving a non-greasy finish.

Irritation

low

Source

synthetic

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Emollient

C11-14 Alkyl Acetate

C11-14 Alkyl Acetate

4.0

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

Irritation

low

Source

synthetic

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Emollient

C11-15 Isoalkanes

C11-15 Isoalkanes

4.0

A lightweight, non-greasy emollient that helps products spread smoothly and evaporates quickly, leaving a silky finish.

Irritation

low

Source

synthetic

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