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

Digalloyl Trioleate

DIGALLOYL TRIOLEATE

4.0

Digalloyl Trioleate is a gentle emollient with antioxidant potential, but research on its efficacy in skincare is still limited.

Irritation

low

Source

synthetic

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Emollient

Diglycereth-7 Malate

DIGLYCERETH-7 MALATE

4.0

A lightweight, water-loving emollient that hydrates and softens skin without clogging pores or feeling heavy.

Irritation

low

Source

semi-synthetic

beautyskincareemollienthumectant
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Emollient

Diglyceryl Sebacate/Isopalmitate

DIGLYCERYL SEBACATE/ISOPALMITATE

4.0

A gentle, lightweight emollient that hydrates and softens skin without clogging pores, suitable for most skin types.

Irritation

low

Source

semi-synthetic

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Emollient

Diheptyl Succinate

Diheptyl Succinate

4.3

A silky, non-greasy emollient that hydrates and smooths skin while improving product texture.

Irritation

low

Source

semi-synthetic

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Emollient

Diheptylundecyl Adipate

Diheptylundecyl Adipate

4.4

A silky, non-greasy emollient that hydrates and softens skin with a lightweight feel, suitable for most skin types.

Irritation

low

Source

natural

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Emollient

Dihexyl Adipate

Dihexyl Adipate

4.3

A silky, lightweight emollient that hydrates without clogging pores, ideal for oily and combination skin.

Irritation

low

Source

synthetic

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Emollient

Dihexyl Fumarate

Dihexyl Fumarate

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

Dihexyl Isoeicosanedioate

Dihexyl Isoeicosanedioate

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

Dihexyldecyl IPDI

Dihexyldecyl Isophthalate

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

Dihexyldecyl Lauroyl Glutamate

Dihexyldecyl Lauroyl Glutamate

4.5

A lightweight, non-greasy emollient derived from amino acids that hydrates and softens skin without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Dihexyldecyl Sebacate

DIHEXYLDECYL SEBACATE

4.3

A silky, non-greasy emollient that spreads easily and helps other ingredients absorb better — great for all skin types, including oily and acne-prone.

Irritation

low

Source

semi-synthetic

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Emollient

Dihexylexane

DIHEXYLOXY CYCLOHEXANE

4.0

A lightweight synthetic emollient that improves product feel and helps other ingredients absorb without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Dihydroabietyl Behenate

Dihydroabietyl Behenate

4.0

A gentle, plant-derived emollient that improves the feel and spreadability of products without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Dihydrocholesterol

DIHYDROCHOLESTEROL

4.3

A gentle, skin-friendly lipid that reinforces the moisture barrier without clogging pores.

Irritation

low

Source

natural

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Skin Conditioning Agent

Dihydrocholesteryl Butyrate

Dihydrocholesteryl Butyrate

4.0

A gentle, cholesterol-based emollient that helps reinforce the skin barrier and lock in moisture without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Dihydrocholesteryl Isostearate

DIHYDROCHOLESTERYL ISOSTEARATE

4.0

A gentle, cholesterol-based emollient that helps reinforce the skin barrier without clogging pores, making it a good choice for dry or sensitive skin.

Irritation

low

Source

semi-synthetic

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Emollient

Dihydrocholesteryl Macadamiate

Dihydrocholesteryl Macadamiate

4.0

A gentle, non-greasy emollient that mimics skin's natural lipids, making it a good choice for dry or sensitive skin.

Irritation

low

Source

semi-synthetic

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Emollient

Dihydrocholesteryl Nonanoate

Dihydrocholesteryl Nonanoate

4.2

A gentle, cholesterol-based emollient that supports the skin barrier and helps lock in moisture without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Dihydrocholesteryl Oleate

DIHYDROCHOLESTERYL OLEATE

4.0

A gentle, cholesterol-based emollient that helps restore the skin barrier and improve moisture retention without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Dihydrocholeth-20

DIHYDROCHOLETH-20

4.0

A gentle, cholesterol-derived ingredient that helps soften skin and improve product feel without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Dihydrolanosterol

Dihydrolanosterol

4.0

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

Irritation

low

Source

natural

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Emollient

Dihydrophytosteryl Octyldecanoate

Dihydrophytosteryl Octyldecanoate

4.0

A gentle, plant-derived emollient that helps soften and smooth skin without clogging pores, making it suitable for most skin types.

Irritation

low

Source

semi-synthetic

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Emollient

Diisoamyl Malate

Diisoamyl Malate

4.0

A silky, non-greasy emollient that feels lightweight on skin and helps other ingredients spread evenly.

Irritation

low

Source

semi-synthetic

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Emollient

Diisoamyl Sebacate

Diisoamyl Sebacate

4.0

A silky, non-greasy emollient that softens skin without clogging pores, ideal for lightweight formulas.

Irritation

low

Source

natural

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Emollient

Diisobutyl Adipate

DIISOBUTYL ADIPATE

3.8

A lightweight synthetic emollient that helps products spread smoothly without a greasy feel, generally considered safe for most skin types.

Irritation

low

Source

synthetic

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Emollient

Diisobutyl Glutarate

DIISOBUTYL GLUTARATE

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

Diisobutyl Maleate

Diisobutyl Maleate

3.8

A lightweight synthetic emollient that helps products spread smoothly and leaves skin feeling soft without greasiness.

Irritation

low

Source

synthetic

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Emollient

Diisobutyl Succinate

Diisobutyl Succinate

4.0

A lightweight, non-greasy emollient that helps products glide on smoothly without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Diisocetyl Adipate

Diisocetyl Adipate

4.0

A lightweight synthetic oil that softens skin without clogging pores, commonly used to improve product texture.

Irritation

low

Source

synthetic

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Emollient

Diisodecyl Adipate

DIISODECYL ADIPATE

4.3

A lightweight synthetic emollient that softens skin without clogging pores, commonly used to improve product texture and spreadability.

Irritation

low

Source

synthetic

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Emollient

Diisononyl Adipate

Diisononyl Adipate

4.0

A silky, lightweight emollient that hydrates without clogging pores, making it a great choice for oily or acne-prone skin.

Irritation

low

Source

synthetic

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Emollient

Diisononyl Ether

Diisononyl Ether

4.0

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

Irritation

low

Source

synthetic

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Emollient

Diisononyl Isoeicosanedioate

Diisononyl Isoeicosanedioate

4.0

A lightweight synthetic ester that softens skin without clogging pores, commonly used to improve product texture.

Irritation

low

Source

synthetic

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Emollient

Diisooctyl Adipate

Diisooctyl Adipate

3.8

A lightweight synthetic emollient that helps products spread easily and leaves skin feeling soft, but may clog pores for some people.

Irritation

low

Source

synthetic

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Emollient

Diisooctyl Sebacate

Diisooctyl Sebacate

4.0

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

Irritation

low

Source

synthetic

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Emollient

Diisooctyl Succinate

Diisooctyl Succinate

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

Diisopropyl Adipate

DIISOPROPYL ADIPATE

4.0

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

Irritation

low

Source

synthetic

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Emollient

Diisopropyl Ethyl Cinnamate

DIISOPROPYL ETHYL CINNAMATE

3.5

A lightweight synthetic emollient that helps soften skin and improve product texture, but it's not a star ingredient with proven long-term benefits.

Irritation

low

Source

synthetic

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Emollient

Diisopropyl Sebacate

DIISOPROPYL SEBACATE

4.3

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

Irritation

low

Source

synthetic

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Emollient

Diisostearyl Adipate

Diisostearyl Adipate

4.0

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

Irritation

low

Source

synthetic

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Emollient

Diisostearyl Fumarate

DIISOSTEARYL FUMARATE

4.0

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

Irritation

low

Source

synthetic

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Emollient

Diisostearyl Malate

Diisostearyl Malate

4.2

A reliable, silky emollient that improves texture and pigment spread without clogging pores or irritating skin.

Irritation

low

Source

synthetic

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Emollient

Diisostearyl Sebacate

Diisostearyl Sebacate

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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Emollient

Dilauryl Ether

Dilauryl Ether

3.8

A gentle synthetic emollient that softens skin and improves product feel without heavy greasiness.

Irritation

low

Source

synthetic

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Emollient

Dilinoleic Acid

Dilinoleic Acid

4.0

A gentle, barrier-strengthening fatty acid that helps lock in moisture without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Dimer Dilinoleyl Dimer Dilinoleate

Dimer Dilinoleyl Dimer Dilinoleate

4.0

A gentle, plant-derived emollient that forms a breathable film on skin to reduce water loss and improve product feel without clogging pores.

Irritation

low

Source

natural

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Emollient

Dimethicone PEG-7 Avocadoate

DIMETHICONE PEG-7 AVOCADOATE

4.0

A gentle silicone emollient that combines the smoothing power of dimethicone with the nourishing properties of avocado oil, making it a good choice for dry or sensitive skin.

Irritation

low

Source

semi-synthetic

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