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

PPG-20 Cetyl Ether

PPG-20 Cetyl Ether

4.0

A gentle synthetic emollient that softens skin and improves product feel without being greasy or clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-20 Methyl Glucose Ether Acetate

PPG-20 METHYL GLUCOSE ETHER ACETATE

4.0

A gentle, non-greasy emollient derived from glucose that helps skincare products spread smoothly and leaves skin feeling soft without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

PPG-20 Oleyl Ether

PPG-20 Oleyl Ether

3.8

A gentle synthetic emollient that helps products glide on smoothly without heavy greasiness, but offers no active skincare benefits.

Irritation

low

Source

synthetic

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Emollient

PPG-20-PEG-20 Hydrogenated Lanolin

PPG-20-PEG-20 Hydrogenated Lanolin

3.8

A versatile, semi-synthetic emollient that softens skin and helps blend oil and water, but may clog pores for some.

Irritation

low

Source

semi-synthetic

beautyskincareemollientemulsifier
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Emollient

PPG-23 Oleyl Ether

PPG-23 Oleyl Ether

3.8

A synthetic emollient that helps products glide on smoothly without feeling greasy, generally safe for most skin types.

Irritation

low

Source

synthetic

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Emollient

PPG-26 Oleate

PPG-26 Oleate

3.8

A synthetic emollient that helps products feel silky and spread easily, with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emollient

PPG-27 Dimethicone

PPG-27 Dimethicone

4.0

A gentle silicone that helps products spread smoothly and leaves skin feeling soft without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-28 Cetyl Ether

PPG-28 Cetyl Ether

4.0

A gentle, synthetic emollient that helps products glide on smoothly without clogging pores or causing irritation.

Irritation

low

Source

synthetic

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Emollient

PPG-3 Benzyl Ether Myristate

PPG-3 Benzyl Ether Myristate

4.0

A lightweight synthetic emollient that helps products glide on smoothly without greasiness, suitable for most skin types.

Irritation

low

Source

synthetic

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Emollient

PPG-3 Butyl Ether

PPG-3 Butyl Ether

4.0

A synthetic emollient that helps products feel silky and spread easily, with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emollient

PPG-3 Caprylyl Ether

PPG-3 Caprylyl Ether

4.0

A synthetic emollient that makes products feel silky and spread easily, with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emollient

PPG-3 Dipivalate

PPG-3 Dipivalate

4.0

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

Irritation

low

Source

synthetic

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Emollient

PPG-3 Myristyl Ether

PPG-3 Myristyl Ether

4.0

A gentle synthetic emollient that softens skin and improves product feel without common irritation or clogging concerns.

Irritation

low

Source

synthetic

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Emollient

PPG-30 Cetyl Ether

PPG-30 Cetyl Ether

4.0

A gentle synthetic emollient that softens skin and improves product feel without common irritation or clogging concerns.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-30 Isocetyl Ether

PPG-30 Isocetyl Ether

4.0

A gentle, synthetic emollient that makes products feel silky without clogging pores or causing irritation.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-30 Oleyl Ether

PPG-30 Oleyl Ether

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-36 Oleate

PPG-36 OLEATE

3.5

PPG-36 Oleate is a synthetic emollient that helps products glide on smoothly, but it may be moderately comedogenic for acne-prone skin.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-37 Oleyl Ether

PPG-37 Oleyl Ether

4.0

A gentle synthetic emollient that softens skin and improves product texture without common irritation or clogging concerns.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-4 Caprylyl Ether

PPG-4 CAPRYLYL ETHER

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-4 Jojoba Acid

PPG-4 Jojoba Acid

4.0

A gentle, semi-synthetic emollient derived from jojoba oil that softens skin without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

PPG-4 Jojoba Alcohol

PPG-4 JOJOBA ALCOHOL

4.0

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

Irritation

low

Source

semi-synthetic

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Emollient

PPG-4 Lauryl Ether

PPG-4 LAURYL ETHER

3.8

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

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-4 Myristyl Ether

PPG-4 Myristyl Ether

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-5 Caprylyl Ether

PPG-5 Caprylyl Ether

3.8

A lightweight synthetic emollient that improves product texture and skin feel without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-5 Lanolate

PPG-5 Lanolate

4.0

A gentle, modified lanolin that softens skin without the heavy feel or common allergens of natural lanolin.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

PPG-5 Lanolin Alcohol Ether

PPG-5 Lanolin Alcohol Ether

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

PPG-5 Lanolin Wax

PPG-5 Lanolin Wax

3.8

A gentle, wax-like emollient derived from lanolin, but may be moderately pore-clogging for acne-prone skin.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

PPG-5 Phytosterol

PPG-5 PHYTOSTEROL

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Antioxidant

PPG-5 Tocophereth-2

PPG-5 Tocophereth-2

4.0

A gentle, semi-synthetic ingredient that moisturizes and provides antioxidant protection, suitable for most skin types.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidantemollient
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Emollient

PPG-50 Cetyl Ether

PPG-50 Cetyl Ether

4.0

A reliable synthetic emollient that helps products spread smoothly and feel silky without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-51

PPG-51

4.0

PPG-51 is a safe, synthetic ingredient that makes products feel silky and helps other ingredients spread evenly without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-6 Caprylyl Ether

PPG-6 Caprylyl Ether

4.0

A lightweight synthetic emollient that improves product texture and spreadability without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-6 Castorate

PPG-6 Castorate

4.0

A gentle, castor-oil-derived emollient that helps products glide on smoothly without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

PPG-6 Sorbeth-500

PPG-6-SORBETH-500

4.0

A gentle, synthetic ingredient that hydrates and smooths skin without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-7 Lauryl Ether

PPG-7 Lauryl Ether

4.0

A gentle synthetic emollient that softens and smooths skin without feeling greasy, suitable for most skin types.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-8 Polyglyceryl-2 Ether

PPG-8 Polyglyceryl-2 Ether

4.0

A mild, water-soluble emollient that softens skin and improves product feel without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

PPG-8 Sorbitol Castor Oil

PPG-8 SORBITOL CASTOR OIL

4.0

A gentle, semi-synthetic ingredient that helps products feel smooth and spread easily without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

PPG-9 Diglyceryl Ether

PPG-9 Diglyceryl Ether

4.0

A gentle synthetic emollient that softens skin and improves product texture without common irritation or clogging concerns.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-9 Laurate

PPG-9 Laurate

3.8

A synthetic emollient that helps products feel silky and spread easily, with a low risk of irritation.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

PPG-90 Butyl Ether

PPG-90 Butyl Ether

4.0

A lightweight synthetic emollient that improves product feel and spreadability without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollienttexturizer
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Emollient

Prickly Pear Seed Oil

OPUNTIA STRICTA SEED OIL

4.3

A luxurious, non-greasy oil rich in vitamin E and essential fatty acids that hydrates and soothes without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Primula Veris Seed Oil

Primula Veris Seed Oil

4.0

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

Irritation

low

Source

natural

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Emollient

Prinsepia Utilis Seed Oil

PRINSEPIA UTILIS SEED OIL

4.0

A gentle, non-greasy plant oil that hydrates and soothes without clogging pores—great for sensitive or oily skin types.

Irritation

low

Source

natural

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Emollient

Pristane

PRISTANE

3.8

Pristane is a lightweight, non-greasy oil that softens skin and helps other ingredients absorb, but its use is limited by sourcing and cost.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Propanediol Dicaprylate

Propanediol Dicaprylate

4.3

A gentle, lightweight emollient that hydrates and softens skin without clogging pores, ideal for oily and sensitive skin types.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Propanediol Dicaprylate/Caprate

PROPANEDIOL DICAPRYLATE/CAPRATE

4.2

A lightweight, non-greasy emollient that softens skin without clogging pores, ideal for oilier or acne-prone skin types.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Propanediol Dipelargonate

Propanediol Dipelargonate

4.0

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

Irritation

low

Source

synthetic

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Emollient

Propanediyl 3-Hydroxycaprate

Propanediyl 3-Hydroxycaprate

4.0

A gentle synthetic emollient that hydrates and smooths skin without clogging pores, ideal for sensitive and oily skin types.

Irritation

low

Source

synthetic

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Emollient

Propyl Octanoate

Propyl Octanoate

4.0

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

Irritation

low

Source

synthetic

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