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

Isocetyl Alcohol

ISOCETYL ALCOHOL

4.0

Isocetyl alcohol is a gentle, non-drying emollient that helps soften skin and improve product texture without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isocetyl Behenate

Isocetyl Behenate

4.0

A gentle, non-greasy emollient that helps moisturizers feel silky without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isocetyl Ethylhexanoate

Isocetyl Ethylhexanoate

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isocetyl Isodecanoate

Isocetyl Isodecanoate

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isocetyl Isostearate

Isocetyl Isostearate

4.0

A lightweight, non-greasy emollient that softens skin and helps products spread smoothly.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isocetyl Laurate

Isocetyl Laurate

4.0

Isocetyl Laurate is a lightweight, non-greasy emollient that softens skin and improves product texture with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isocetyl Myristate

Isocetyl Myristate

3.8

Isocetyl Myristate is a reliable emollient that softens skin, but it may clog pores for some people.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isocetyl Palmitate

Isocetyl Palmitate

3.8

A lightweight synthetic emollient that softens skin without a greasy feel, but may clog pores for some people.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isocetyl Salicylate

Isocetyl Salicylate

3.8

Isocetyl Salicylate is a gentle emollient that also offers mild salicylic acid-like benefits, making it a good option for smoothing skin without irritation.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isocetyl Stearate

Isocetyl Stearate

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Acetate

Isodecyl Acetate

4.0

Isodecyl Acetate is a lightweight synthetic emollient that helps products glide on smoothly without a greasy feel, making it a popular choice for non-oily formulations.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Alcohol

Isodecyl Alcohol

3.8

Isodecyl Alcohol is a gentle synthetic emollient that helps products spread smoothly and feel less greasy, but it offers no active skin benefits on its own.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Citrate

Isodecyl Citrate

4.0

Isodecyl Citrate is a lightweight emollient that softens skin without greasiness, making it a good choice for non-comedogenic formulas.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Cocoate

Isodecyl Cocoate

4.0

Isodecyl Cocoate is a gentle, non-greasy emollient that helps skin feel soft and smooth, making it a good choice for sensitive or acne-prone skin.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Ethylhexanoate

Isodecyl Ethylhexanoate

4.2

A lightweight, non-greasy emollient that spreads easily and helps other ingredients absorb better.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Glyceryl Ether

Isodecyl Glyceryl Ether

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Hydroxystearate

Isodecyl Hydroxystearate

4.0

A lightweight, non-greasy emollient that softens skin without clogging pores, making it a good choice for sensitive or acne-prone skin.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Isononanoate

ISODECYL ISONONANOATE

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Laurate

Isodecyl Laurate

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Myristate

Isodecyl Myristate

3.8

Isodecyl Myristate is a lightweight synthetic emollient that softens skin and improves product feel, but it has a moderate chance of clogging pores for acne-prone individuals.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Neopentanoate

Isodecyl Neopentanoate

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Oleate

Isodecyl Oleate

3.8

Isodecyl Oleate is a lightweight emollient that softens skin but may clog pores for some people.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Palmitate

Isodecyl Palmitate

4.0

A lightweight synthetic emollient that hydrates without greasiness, but may clog pores for acne-prone skin.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Salicylate

Isodecyl Salicylate

4.0

Isodecyl Salicylate is a gentle emollient that softens skin and enhances product texture, with low irritation potential.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isodecyl Stearate

ISODECYL STEARATE

4.0

Isodecyl Stearate is a lightweight emollient that softens skin without heavy greasiness, but it may clog pores for some people.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isoeicosane

Isoeicosane

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isohexyl Caprate

Isohexyl Caprate

4.2

A silky, non-greasy emollient that hydrates and smooths skin with a low risk of irritation or clogged pores.

Irritation

low

Source

natural

beautyskincareemollient
Read ingredient review

Emollient

Isohexyl Laurate

Isohexyl Laurate

4.0

A gentle, lightweight emollient that softens skin without clogging pores or feeling heavy.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isohexyl Neopentanoate

Isohexyl Neopentanoate

4.0

A silky, lightweight emollient that spreads easily and leaves a non-greasy finish, making it a favorite in sunscreens and lightweight moisturizers.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isohexyl Palmitate

Isohexyl Palmitate

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isolauryl Behenate

ISOLAURYL BEHENATE

4.0

A gentle, non-greasy emollient that softens skin without clogging pores, ideal for sensitive and oily skin types.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isomerized Jojoba Oil

ISOMERIZED JOJOBA OIL

4.3

A lightweight, non-greasy emollient that closely resembles skin's natural oils, making it ideal for all skin types including oily and acne-prone.

Irritation

low

Source

natural

beautyskincareemollient
Read ingredient review

Emollient

Isomerized Safflower Acid

ISOMERIZED SAFFLOWER ACID

4.0

A gentle, skin-friendly fatty acid that helps reinforce the skin barrier and improve moisture retention without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isomerized Safflower Glycerides

ISOMERIZED SAFFLOWER GLYCERIDES

4.0

A lightweight, non-greasy emollient derived from safflower oil that helps soften and smooth skin without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isononyl Isononanoate

Isononyl Isononanoate

4.0

A lightweight, non-greasy emollient that spreads easily and leaves a silky feel, ideal for those who dislike heavy oils.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isononyl Propionate

Isononyl Propionate

4.0

A lightweight synthetic emollient that softens skin without greasiness, widely used for its silky feel and compatibility with other ingredients.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isooctyl Caprylate/Caprate

Isooctyl Caprylate/Caprate

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isooctyl Lactoyl Tallate

ISOOCTYL LACTOYL TALLATE

3.5

A gentle synthetic emollient that helps soften and smooth the skin with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isooctyl Polyhydroxystearate

ISOOCTYL POLYHYDROXYSTEARATE

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isooctyl Tallate

ISOOCTYL TALLATE

3.8

A lightweight, non-greasy emollient that helps soften skin and improve product texture, generally well-tolerated.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopentenyl Isopentenoate

3-ISOPENTENYL 2-ISOPENTENOATE

3.5

A gentle synthetic emollient that helps soften and smooth skin with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Arachidate

ISOPROPYL ARACHIDATE

4.0

A reliable synthetic emollient that softens skin but may clog pores for those prone to breakouts.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Avocadate

ISOPROPYL AVOCADATE

4.0

A gentle, avocado-derived emollient that hydrates and softens skin without feeling greasy.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Babassuate

Isopropyl Babassuate

4.3

A lightweight, plant-based emollient that gives skin a silky feel without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Behenate

Isopropyl Behenate

4.0

A lightweight synthetic emollient that softens skin without heavy residue, generally well-tolerated and non-comedogenic.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Benzoate

ISOPROPYL BENZOATE

4.0

A lightweight synthetic emollient that helps products glide on smoothly without a greasy feel.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Butyrate

Isopropyl Butyrate

4.0

A lightweight synthetic ester that softens skin without a greasy feel, but may not suit those with very sensitive or acne-prone skin.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Citrate

Isopropyl Citrate

3.8

Isopropyl Citrate is a gentle emollient that helps soften skin and improve product texture, with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Hexanoate

Isopropyl Hexanoate

4.0

A lightweight synthetic emollient that softens skin without greasiness, generally well-tolerated.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Hydroxycetyl Ether

Isopropyl Hydroxycetyl Ether

3.8

A gentle synthetic emollient that helps skin feel soft and smooth without clogging pores, but it's not a hydrating or active ingredient.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Isostearate

Isopropyl Isostearate

3.8

A lightweight synthetic emollient that spreads easily and leaves a silky feel, but may clog pores for some skin types.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Isovalerate

ISOPROPYL ISOVALERATE

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Jojobate

ISOPROPYL JOJOBATE

4.2

A lightweight, non-greasy emollient that mimics the skin's natural oils, making it a great choice for dry or sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Lanolate

ISOPROPYL LANOLATE

3.8

A rich, lanolin-derived emollient that softens skin but may clog pores for some people.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
Read ingredient review

Emollient

Isopropyl Laurate

Isopropyl Laurate

3.5

Isopropyl Laurate is a lightweight synthetic oil that softens skin but may clog pores for some people.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review