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 20,303
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

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
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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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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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Emollient

Palmitic Acid

Palmitic Acid

4.0

Palmitic acid is a gentle fatty acid that softens skin and helps products feel creamy, but it may clog pores for some people.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Palmitoleic Acid

HEXADECENOIC ACID

4.0

A gentle omega-7 fatty acid that helps support the skin barrier and improve moisture retention without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Skin conditioning agent

Palmitoyl Alanine

Palmitoyl Alanine

4.0

A gentle, synthetic amino acid derivative that helps support the skin barrier and improve moisture retention without irritation.

Irritation

low

Source

synthetic

beautyskincareconditioning agent
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Skin conditioning agent

Palmitoyl Arginine

Palmitoyl Arginine

4.0

A gentle peptide that signals skin to support collagen, helping improve firmness and smooth fine lines over time.

Irritation

low

Source

semi-synthetic

beautyskincareanti-aging
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Skin conditioning agent

Palmitoyl Carnitine

Palmitoyl Carnitine

3.8

Palmitoyl Carnitine is a gentle, fatty-acid-linked amino acid that may help soothe skin and support a healthy moisture barrier, though research is still early.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
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Anti-aging agent

Palmitoyl Carnosine

Palmitoyl Carnosine

4.0

A peptide that helps protect collagen from sugar damage and supports firmer, more resilient skin over time.

Irritation

low

Source

semi-synthetic

beautyskincarepeptide
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Antioxidant

Palmitoyl Cocoa Seed Extract

Palmitoyl Cocoa Seed Extract

3.8

A gentle, semi-synthetic antioxidant that may help protect skin from environmental stress, but research is still early.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
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Antioxidant

Palmitoyl Coffee Bean Extract

Palmitoyl Coffee Bean Extract

4.0

A promising antioxidant ingredient that pairs coffee's polyphenols with a fatty acid for better skin penetration, though research is still limited.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
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Skin conditioning agent

Palmitoyl Collagen Amino Acids

Palmitoyl Collagen Amino Acids

4.0

A gentle, fatty-acid-linked collagen peptide that may help improve skin firmness and hydration with low irritation risk.

Irritation

low

Source

semi-synthetic

beautyskincareanti-aging
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Anti-aging agent

Palmitoyl Decapeptide-21

Palmitoyl Decapeptide-21

4.0

A synthetic peptide that signals skin to produce more collagen, helping reduce fine lines and improve firmness with low irritation risk.

Irritation

low

Source

synthetic

beautyskincareanti-aging
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Anti-Aging Agent

Palmitoyl Dipeptide-10

Palmitoyl Dipeptide-10

4.0

A synthetic peptide that may help reduce fine lines and improve skin firmness, but results are gradual and vary by person.

Irritation

low

Source

synthetic

beautyskincareanti-aging
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Anti-Aging Agent

Palmitoyl Dipeptide-13

Palmitoyl Dipeptide-13

4.0

A synthetic peptide that signals skin to produce more collagen, helping soften fine lines over time with minimal irritation.

Irritation

low

Source

synthetic

beautyskincareanti-aging
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Anti-aging agent

Palmitoyl Dipeptide-17

Palmitoyl Dipeptide-17

4.0

A synthetic peptide that may help reduce the look of fine lines and improve skin firmness with regular use.

Irritation

low

Source

synthetic

beautyskincareanti-aging
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Anti-aging agent

Palmitoyl Dipeptide-18

Palmitoyl Dipeptide-18

4.0

A synthetic peptide that signals skin to produce more collagen, helping reduce fine lines and improve firmness with low irritation risk.

Irritation

low

Source

synthetic

beautyskincareanti-aging
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Anti-aging agent

Palmitoyl Dipeptide-28 Complex

Palmitoyl Dipeptide-28 D-Serine Dipeptide-7 Palmitamide

4.0

A synthetic peptide complex that may help improve skin firmness and reduce fine lines, with low irritation potential.

Irritation

low

Source

synthetic

beautyskincareanti-aging
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Anti-aging agent

Palmitoyl Dipeptide-7

Palmitoyl Dipeptide-7

4.0

A synthetic peptide that helps support collagen production and reduce the appearance of fine lines with low irritation risk.

Irritation

low

Source

synthetic

beautyskincarepeptide
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