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

Myreth-3 Palmitate

MYRETH-3 PALMITATE

3.5

Myreth-3 Palmitate is a synthetic emollient that helps products feel smooth and spread easily, but it may be moderately comedogenic for acne-prone skin.

Irritation

low

Source

synthetic

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Emollient

Myrica Pubescens Fruit Wax

MYRICA PUBESCENS FRUIT WAX

4.0

A gentle, plant-derived wax that adds richness and stability to formulas without common irritation concerns.

Irritation

low

Source

natural

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Emollient

Myricyl Alcohol

Myricyl Alcohol

3.8

A gentle, plant-derived emollient that softens skin and improves product feel without clogging pores.

Irritation

low

Source

natural

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Emollient

Myristyl Acetate

Myristyl Acetate

4.0

Myristyl Acetate is a gentle emollient that helps soften skin without clogging pores, making it a safe choice for most skin types.

Irritation

low

Source

synthetic

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Emollient

Myristyl Alcohol

MYRISTYL ALCOHOL

4.0

A gentle fatty alcohol that softens skin and helps stabilize formulas without the drying effects of short-chain alcohols.

Irritation

low

Source

natural

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Emollient

Myristyl Carpotroche Seedate

MYRISTYL CARPOTROCHE BRASILIENSIS SEEDATE

4.0

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

Irritation

low

Source

semi-synthetic

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Emollient

Myristyl Cupuaçuate

MYRISTYL THEOBROMA GRANDIFLORUM SEEDATE

4.0

A gentle, plant-derived emollient that softens and smooths skin without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Myristyl Ethylhexanoate

MYRISTYL ETHYLHEXANOATE

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

Myristyl Glycol

Myristyl Glycol

4.0

Myristyl Glycol is a gentle emollient that helps soften and smooth the skin with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emollient

Myristyl Isostearate

MYRISTYL ISOSTEARATE

4.0

Myristyl Isostearate is a gentle emollient that helps soften skin and improve the feel of creams and lotions without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Myristyl Lactate

MYRISTYL LACTATE

4.0

A gentle emollient that helps soften skin without feeling greasy, making it a good choice for dry or normal skin types.

Irritation

low

Source

semi-synthetic

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Emollient

Myristyl Laurate

Myristyl Laurate

4.0

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

Irritation

low

Source

synthetic

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Emollient

Myristyl Lignocerate

Myristyl Lignocerate

4.0

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

Irritation

low

Source

semi-synthetic

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Emollient

Myristyl Myristate

Myristyl Myristate

4.0

A rich emollient that softens skin and thickens formulas, but may clog pores for acne-prone skin.

Irritation

low

Source

semi-synthetic

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Emollient

Myristyl Neopentanoate

MYRISTYL NEOPENTANOATE

4.2

A lightweight synthetic emollient that hydrates and softens skin without clogging pores, making it a great choice for oily and acne-prone skin types.

Irritation

low

Source

synthetic

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Emollient

Myristyl PCA

MYRISTYL PCA

4.0

Myristyl PCA is a mild, moisturizing ingredient that helps keep skin soft and hydrated without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Myristyl Propionate

MYRISTYL PROPIONATE

4.0

Myristyl Propionate 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

Myristyl Stearate

Myristyl Stearate

4.0

Myristyl Stearate is a gentle emollient that softens skin and thickens formulas without common irritation or clogging concerns.

Irritation

low

Source

synthetic

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Emollient

Nageia Nagi Seed Oil

NAGEIA NAGI SEED OIL

4.0

A gentle, plant-derived oil that helps soften and condition skin with antioxidant support, though research is still limited.

Irritation

low

Source

natural

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Emollient

Narcissus Flower Wax

NARCISSUS POETICUS FLOWER WAX

3.8

A gentle, plant-based wax that helps lock in moisture and gives a smooth feel to lip and skin products.

Irritation

low

Source

natural

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Emollient

Nasturtium Flower Oil

NASTURTIUM OFFICINALE FLOWER OIL

3.8

A gentle, antioxidant-rich oil that helps soothe and protect the skin, but research on its specific benefits is still emerging.

Irritation

low

Source

natural

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Emollient

Neatsfoot Oil

Neatsfoot Oil

2.5

Neatsfoot oil is a traditional animal-derived emollient that softens skin but is rarely used in modern skincare due to better alternatives and comedogenic concerns.

Irritation

low

Source

natural

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Emollient

Neem Seed Oil

MELIA AZADIRACHTA SEED OIL

4.0

Neem seed oil is a traditional botanical oil that moisturizes and helps calm skin, but its strong scent and moderate comedogenic rating mean it's best for those who tolerate oils well.

Irritation

low

Source

natural

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Emollient

Neopentyl Glycol Dicaprate

NEOPENTYL GLYCOL DICAPRATE

4.0

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

Irritation

low

Source

synthetic

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Emollient

Neopentyl Glycol Diisononanoate

NEOPENTYL GLYCOL DIISONONANOATE

4.0

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

Irritation

low

Source

synthetic

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Emollient

Neopentyl Glycol Diisostearate

NEOPENTYL GLYCOL DIISOSTEARATE

4.0

A lightweight synthetic emollient that gives products a silky feel without greasiness, generally well-tolerated by most skin types.

Irritation

low

Source

synthetic

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Emollient

Nonadecane

NONADECANE

4.0

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

Irritation

low

Source

natural

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Emollient

Nonanediyl Diacetate

NONANEDIYL DIACETATE

3.8

A lightweight synthetic ester that helps skincare products feel silky and spread easily without greasiness.

Irritation

low

Source

synthetic

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Emollient

Noni Seed Oil

Morinda Citrifolia Seed Oil

4.0

Noni seed oil is a gentle, antioxidant-rich emollient that helps soften and protect the skin without clogging pores.

Irritation

low

Source

natural

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Emollient

Nonyl Alcohol

NONYL ALCOHOL

3.5

Nonyl alcohol is a gentle fatty alcohol that helps soften and smooth skin without the drying effects of short-chain alcohols.

Irritation

low

Source

synthetic

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Emollient

Nutmeg Kernel Oil & Flower Wax

Myristica Fragrans (Nutmeg) Kernel Oil / Flower Wax Glycerides

3.8

A natural emollient blend that softens skin and adds a warm, spicy scent, but may irritate sensitive or acne-prone skin.

Irritation

moderate

Source

natural

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Emollient

Oat Kernel Oil

Avena Sativa (Oat) Kernel Oil

4.3

Oat kernel oil is a gentle, non-greasy emollient that softens and soothes dry or sensitive skin without clogging pores.

Irritation

low

Source

natural

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Emollient

Oat Sprout Oil

AVENA SATIVA SPROUT OIL

4.0

A gentle, antioxidant-rich oil from oat sprouts that helps soften and protect the skin without clogging pores.

Irritation

low

Source

natural

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Emollient

Octacosanyl Glycol

Octacosanyl Glycol

4.0

A gentle, waxy emollient that helps soften and smooth skin while supporting the moisture barrier.

Irritation

low

Source

synthetic

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Emollient

Octacosanyl Glycol Isostearate

Octacosanyl Glycol Isostearate

3.8

A gentle synthetic emollient that helps skin feel soft and smooth without clogging pores, making it a safe choice for most skin types.

Irritation

low

Source

synthetic

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Emollient

Octadecane

OCTADECANE

3.5

Octadecane is a safe, lightweight emollient that softens skin and improves product texture without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Octadecene

OCTADECENE

3.5

A synthetic emollient that makes products feel silky and spread easily, but offers no active skincare benefits.

Irritation

low

Source

synthetic

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Emollient

Octene Hydroformylated-Distilled

OCTENE HYDROFORMYLATED-DISTILLED

3.5

A synthetic emollient that helps products glide on smoothly without heavy greasiness, but has limited research on long-term skin benefits.

Irritation

low

Source

synthetic

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Skin Conditioning

Octyl Butenoate

Octyl 2-Butenoate

3.5

A mild synthetic ester that helps condition skin and improve product feel, but research on its long-term effects is limited.

Irritation

low

Source

synthetic

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Emollient

Octyl Isobutyrate

Octyl Isobutyrate

4.0

A mild synthetic ester that helps products feel silky and spread easily, but it's mainly used for texture and scent, not active skincare benefits.

Irritation

low

Source

synthetic

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Emollient

Octyldecyl Oleate

OCTYLDECYL OLEATE

4.0

A lightweight, 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

Octyldodecanol

Octyldodecanol

4.0

A reliable, lightweight emollient that helps products spread smoothly without feeling greasy.

Irritation

low

Source

synthetic

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Emollient

Octyldodecyl Avocadoate

OCTYLDODECYL AVOCADOATE

4.3

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

Irritation

low

Source

semi-synthetic

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Emollient

Octyldodecyl Beeswax

Octyldodecyl Beeswax

4.0

A gentle, modified beeswax that softens skin and improves product texture without common beeswax sensitivities.

Irritation

low

Source

semi-synthetic

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Emollient

Octyldodecyl Behenate

OCTYLDODECYL BEHENATE

4.2

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

Irritation

low

Source

synthetic

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Emollient

Octyldodecyl Benzoate

Octyldodecyl Benzoate

4.0

A reliable, lightweight emollient that softens skin without feeling greasy, making it a popular choice for non-comedogenic formulas.

Irritation

low

Source

synthetic

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Emollient

Octyldodecyl Cocoate

Octyldodecyl Cocoate

4.0

A gentle, non-greasy emollient that hydrates and improves product feel without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Octyldodecyl Erucate

Octyldodecyl Erucate

4.0

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

Irritation

low

Source

synthetic

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Emollient

Octyldodecyl Ethylhexanoate

OCTYLDODECYL ETHYLHEXANOATE

4.2

A lightweight, silky emollient that improves product texture without clogging pores or causing greasiness.

Irritation

low

Source

synthetic

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Emollient

Octyldodecyl Glycol Grapeseedate

OCTYLDODECYL GLYCOL GRAPESEEDATE

4.0

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

Irritation

low

Source

semi-synthetic

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Emollient

Octyldodecyl Isostearate

Octyldodecyl Isostearate

4.0

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

Irritation

low

Source

synthetic

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Emollient

Octyldodecyl Lactate

Octyldodecyl Lactate

4.0

A silky, non-greasy emollient that hydrates and smooths skin, suitable for most skin types including oily and acne-prone.

Irritation

low

Source

semi-synthetic

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Emollient

Octyldodecyl Lanolate

Octyldodecyl Lanolate

4.0

A gentle, lanolin-derived emollient that softens skin without the heavy feel of pure lanolin.

Irritation

low

Source

semi-synthetic

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