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 20,769
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

Fragrance Ingredient

P-Vinylphenol

P-VINYLPHENOL

2.5

P-Vinylphenol is a synthetic fragrance compound with limited cosmetic research; it may pose irritation risks and is not a functional skincare active.

Irritation

moderate

Source

synthetic

beautyskincarefragrance
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Antioxidant

Paecilomyces Japonica Ferment Extract

PAECILOMYCES JAPONICA/CYNANCHUM WILFORDII ROOT FERMENT EXTRACT FILTRATE

3.8

A fermented blend of a medicinal mushroom and a root extract that may offer antioxidant and soothing benefits, though research is still emerging.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Emollient

Paeonia Rockii Seed Oil

PAEONIA ROCKII SEED OIL

4.3

A nourishing, non-greasy oil rich in omega fatty acids and antioxidants that helps soften skin and support a healthy moisture barrier.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

Paeonol

PAEONOL

4.0

Paeonol is a gentle antioxidant from peony that may help calm skin and fight environmental stress, but human studies are limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Absorbent

Pakau White Clay

Kaolin (and) Montmorillonite

4.0

Pakau White Clay is a mild, absorbent clay ideal for oily or combination skin, offering gentle purification without harshness.

Irritation

low

Source

natural

beautyskincareabsorbent
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Absorbent

Palau White Clay

Palau White Clay

4.0

Palau White Clay is a gentle, mineral-rich clay that helps absorb excess oil and impurities without stripping the skin, making it a good option for sensitive or dry skin types.

Irritation

low

Source

natural

beautyskincareabsorbent
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Absorbent

Palau White Clay Extract

Palau White Clay Extract

3.8

A gentle clay extract that helps absorb excess oil and impurities without stripping the skin, but research on its unique benefits is still limited.

Irritation

low

Source

natural

beautyskincareabsorbent
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Antioxidant

Pale Goosefoot Seed Extract

Chenopodium pallidicaule seed extract

3.8

A gentle, plant-derived antioxidant that may help protect skin from environmental stress, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Pale Iris Leaf Cell Extract

Iris Pallida Leaf Cell Extract

4.0

A gentle, plant-derived antioxidant that may help calm skin and protect against environmental stress, though research is still emerging.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Soothing Agent

Pale Licorice Root Extract

Glycyrrhiza Pallidiflora Root Extract

4.0

A gentle, plant-based ingredient that may help calm redness and provide antioxidant protection, though research is less extensive than for other licorice extracts.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Colorant

Palladium

PALLADIUM

2.0

Palladium is a rare metal used mainly as a colorant in cosmetics, not a proven skincare active, and may cause irritation in sensitive individuals.

Irritation

moderate

Source

natural

beautyskincarecolorant
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Antioxidant

Palm Fruit Extract

Elaeis Guineensis Fruit Extract

3.8

A gentle antioxidant-rich fruit extract that helps protect skin from environmental stress while providing light hydration.

Irritation

low

Source

natural

beautyskincareantioxidant
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Emollient

Palm Fruit Oil

Elaeis Oleifera Fruit Oil

3.8

A rich, plant-based emollient that softens skin but may clog pores for some people, and its sourcing raises environmental concerns.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Palm Glyceride

Palm Glyceride

4.0

A gentle, plant-derived emollient that helps replenish the skin's natural moisture barrier without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Palm Kernel Alcohol

PALM KERNEL ALCOHOL

4.0

A gentle fatty alcohol that softens skin and improves product texture without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Palm Kernel Oil

Elaeis Oleifera Kernel Oil

3.8

Palm kernel oil is a rich emollient that softens skin but may clog pores for some, and its sourcing raises environmental concerns.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Palm Kernel Wax

PALM KERNEL WAX

4.0

A gentle, plant-based wax that helps give products a smooth, creamy texture without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Foam Booster

Palm Kernelamide DEA

Palm Kernelamide DEA

3.5

An effective foam booster and thickener, but may cause mild irritation for sensitive skin and raises sustainability concerns due to palm oil sourcing.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Foam Booster

Palm Kernelamide MEA

Palm Kernelamide MEA

3.5

Palm Kernelamide MEA is a mild foam booster and thickener that helps create a rich lather in cleansers, but it may be a concern for those avoiding palm-derived ingredients.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Palm Kernelamide MIPA

PALM KERNELAMIDE MIPA

3.5

A mild cleansing ingredient that helps create rich lather, but may not suit those avoiding palm-derived ingredients.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Emollient

Palm Oil Oleyl Esters

Palm Oil Oleyl Esters

3.8

A gentle emollient that helps skin feel soft and smooth, but its sustainability depends on palm oil sourcing.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emulsifier

Palm Oil PEG-8 Esters

PALM OIL PEG-8 ESTERS

3.8

A gentle emulsifier that helps mix oil and water, but its palm oil origin raises sustainability concerns.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Palm Oil Polyglyceryl-4 Esters

Palm Oil Polyglyceryl-4 Esters

4.0

A mild, plant-derived emulsifier that helps mix oil and water in creams and lotions without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Palm Oil Polyglyceryl-5 Esters

Palm Oil Polyglyceryl-5 Esters

4.0

A gentle, plant-derived emulsifier that helps blend oil and water in your skincare products while also softening the skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emollient

Palm-Derived Ingredients

Elaeis Guineensis Oil / Hydrogenated Palm Glycerides / etc.

3.5

Palm-derived ingredients are common, effective, and affordable, but raise environmental and ethical concerns due to deforestation.

Irritation

low

Source

natural

beautyskincareemollient
Read ingredient review

Surfactant

Palmamide DEA

PALMAMIDE DEA

3.5

Palmamide DEA boosts foam and thickens cleansers, but it can be mildly irritating and has raised some safety concerns due to potential DEA contamination.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Foam Booster

Palmamide MEA

PALMAMIDE MEA

3.5

Palmamide MEA is a mild foam booster and thickener for cleansers, but its palm oil origin raises sustainability concerns for some users.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Palmamide MIPA

PALMAMIDE MIPA

3.5

Palmamide MIPA is a mild surfactant that helps create rich lather, but it may cause irritation for sensitive skin and raises sustainability concerns due to palm oil sourcing.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Palmamidopropyl Betaine

PALMAMIDOPROPYL BETAINE

4.0

A gentle, plant-derived surfactant that helps create a rich lather while being kind to sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Palmamine

Palmamine

3.5

Palmamine is a palm-derived surfactant that helps cleanse and emulsify, but may cause irritation in sensitive skin and raises sustainability concerns.

Irritation

moderate

Source

natural

beautyskincaresurfactant
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Humectant

Palmaria Palmata Powder

Palmaria Palmata Powder

4.0

A gentle, nutrient-packed seaweed powder that hydrates and soothes skin without irritation.

Irritation

low

Source

natural

beautyskincarehumectantantioxidant
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Fragrance Component

Palmarosa Herb Extract

CYMBOPOGON MARTINI SOFIA HERB EXTRACT

3.8

A gentle botanical extract with a pleasant rose-like scent and mild astringent effects, but limited research on its standalone skincare benefits.

Irritation

low

Source

natural

beautyskincarebotanical
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Fragrance Component

Palmarosa Leaf Extract

Cymbopogon Martini Herb Extract

3.8

A gentle botanical extract that adds a pleasant herbal scent and may offer mild soothing benefits, but its active effects are not well-studied in skincare.

Irritation

low

Source

natural

beautyskincarebotanical
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Fragrance

Palmarosa Oil

CYMBOPOGON MARTINI SOFIA HERB OIL

4.0

Palmarosa oil adds a pleasant floral scent and may help reduce bacteria on skin, but it can be irritating for sensitive skin if used at high concentrations.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Antioxidant

Palmatine

Palmatine

3.8

Palmatine is a plant-derived alkaloid with antioxidant and anti-inflammatory potential, but research in topical skincare is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Surfactant

Palmeth-2

PALMETH-2

3.5

Palmeth-2 is a gentle surfactant and emulsifier that helps cleansers foam and lotions stay mixed, but it's derived from palm oil, which raises sustainability concerns.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Palmeth-2 Phosphate

PALMETH-2 PHOSPHATE

3.8

A gentle cleansing agent that helps remove dirt and oil without stripping the skin, but its palm-derived origin raises sustainability questions.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Antistatic Agent

Palmidopropyl Dimonium Chloride

Palmidoethyl Palmoylpropyl Dimonium Chloride

3.8

A gentle conditioning ingredient that reduces static and improves hair manageability, but its palm oil origin raises sustainability questions.

Irritation

low

Source

semi-synthetic

beautyhaircareconditioning agent
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Skin conditioning

Palmitamide

Palmitamide

3.8

Palmitamide is a gentle, fatty-acid-based ingredient that helps reinforce the skin barrier and improve moisture retention.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Foam Booster

Palmitamide DEA

Palmitamide DEA

3.5

Palmitamide DEA helps create rich lather and thicken cleansers, but may cause irritation for sensitive skin and has moderate comedogenic potential.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Emulsifier

Palmitamide MEA

Palmitamide MEA

4.0

A mild emulsifier that helps blend oil and water in creams and lotions, with very low irritation potential.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Skin barrier repair

Palmitamidohexadecanediol

Palmitamidohexadecanediol

4.0

A synthetic ceramide mimic that strengthens the skin barrier and locks in moisture, ideal for dry or sensitive skin.

Irritation

low

Source

synthetic

beautyskincarebarrier repair
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Surfactant

Palmitamidopropyl Betaine

Palmitamidopropyl Betaine

4.0

A gentle, coconut-derived surfactant that helps create a rich lather without stripping the skin, making it a popular choice for sensitive skin cleansers.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Palmitamidopropylamine Oxide

Palmitamidopropylamine Oxide

3.8

A gentle, foam-enhancing surfactant that helps cleansers feel creamy and mild, but offers no direct skin benefit beyond cleansing.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Palmitamine Oxide

Palmitamine Oxide

3.8

A gentle surfactant that helps create a rich lather without stripping the skin, but it's semi-synthetic and may not suit all sensitive skin types.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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