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 1,097
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

Surfactant

Ozonized Polysorbate 80

OZONIZED POLYSORBATE 80

3.5

Ozonized Polysorbate 80 is a modified emulsifier with potential antimicrobial benefits, but its ozone content may cause irritation for sensitive skin.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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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

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
Read ingredient review

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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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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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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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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Surfactant

Peanutamide MEA

PEANUTAMIDE MEA

3.5

Peanutamide MEA is a foam booster and cleanser, but it may be mildly irritating and is not suitable for those with peanut allergies.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Emulsifier

PEG Oleate

PEG Oleate

3.5

PEG Oleate is a common synthetic emulsifier that helps mix oil and water, but it may be slightly irritating for very sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Surfactant

PEG-10

PEG-10

3.5

PEG-10 is a common synthetic emulsifier that helps blend oil and water in cleansers, but may raise concerns about potential contamination with impurities depending on manufacturing quality.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Surfactant

PEG-10 Cocamine

PEG-10 Cocamine

3.5

PEG-10 Cocamine is an effective cleansing and emulsifying agent, but may be mildly irritating for sensitive skin due to its surfactant nature.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

PEG-10 Isolaureth-6

PEG-10 ISOLAURYL THIOETHER

3.5

A synthetic cleansing agent that helps remove dirt and oil, but may be drying or irritating for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Emulsifier

PEG-10 Laurate

PEG-10 Laurate

3.5

A common synthetic emulsifier that helps mix oil and water, but may be slightly irritating for very sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

PEG-10 Oleamine

PEG-10 Oleamine

3.5

PEG-10 Oleamine is an effective emulsifier but may cause irritation or clog pores for sensitive or acne-prone skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

PEG-10 Soyamine

PEG-10 Soyamine

3.5

PEG-10 Soyamine is an effective emulsifier but may be moderately irritating and comedogenic, so it's best suited for rinse-off products.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Emulsifier

PEG-10 Stearamide

PEG-10 Stearamide

3.5

A synthetic helper ingredient that keeps oil and water mixed, but offers no direct skin benefit.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Surfactant

PEG-10 Stearamine

PEG-10 Stearamine

3.5

PEG-10 Stearamine is a synthetic emulsifier that helps mix oil and water in products, but it may be moderately irritating or comedogenic for sensitive or acne-prone skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Antistatic Agent

PEG-10 Stearyl Benzonium Chloride

PEG-10 Stearyl Benzonium Chloride

3.5

A synthetic conditioning agent that helps reduce static and soften hair, but may cause irritation or clog pores in sensitive individuals.

Irritation

moderate

Source

synthetic

beautyskincarehaircaresurfactant
Read ingredient review

Surfactant

PEG-10 Tallow Aminopropylamine

PEG-10 TALLOW AMINOPROPYLAMINE

2.5

A semi-synthetic surfactant and conditioner that can improve texture but may cause irritation or clog pores in sensitive or acne-prone skin.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

PEG-11 Castor Oil

PEG-11 Castor Oil

3.8

PEG-11 Castor Oil is a gentle emulsifier that helps blend oil and water in cleansers and shampoos, but its PEG component raises mild environmental and purity concerns.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

PEG-11 Cocamide

PEG-11 Cocamide

3.5

An effective cleansing agent that can be drying or irritating for sensitive skin, best suited for rinse-off formulas.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

PEG-11 Lauramide

PEG-11 Lauramide

3.5

A synthetic surfactant that helps cleanse and emulsify, but may be drying or irritating for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
Read ingredient review

Emulsifier

PEG-11 Oleate

PEG-11 Oleate

3.5

PEG-11 Oleate is a synthetic emulsifier that helps mix oil and water in products, but it may be mildly irritating for sensitive skin and has moderate comedogenic potential.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

PEG-11 Tallow Amine

PEG-11 Tallow Amine

3.0

PEG-11 Tallow Amine is an effective emulsifier but may cause irritation for sensitive skin and raises ethical concerns due to its animal-derived origin.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

PEG-12 Cocamine

PEG-12 Cocamine

3.5

An effective cleansing and emulsifying ingredient, but may cause irritation for sensitive skin due to its surfactant nature.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Emulsifier

PEG-12 Dilaurate

PEG-12 Dilaurate

3.5

PEG-12 Dilaurate is a safe, widely used emulsifier that helps products spread smoothly, but it may not suit those avoiding synthetic ingredients.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Surfactant

PEG-12 Ditallate

PEG-12 Ditallate

3.5

PEG-12 Ditallate is a synthetic cleanser ingredient that effectively removes dirt and oil, but may be slightly drying for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Emulsifier

PEG-12 Laurate

PEG-12 Laurate

3.5

PEG-12 Laurate is a synthetic emulsifier that helps mix oil and water, but may be mildly irritating for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

PEG-12 Palmitamine

PEG-12 Palmitamine

3.5

PEG-12 Palmitamine is a synthetic emulsifier that helps mix oil and water, but it may cause irritation or clog pores for sensitive or acne-prone skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Emulsifier

PEG-12 Tallate

PEG-12 TALLATE

3.5

PEG-12 Tallate is a functional emulsifier that helps mix oil and water, but may cause mild irritation for sensitive skin types.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

PEG-13 Hydrogenated Tallow Amide

PEG-13 Hydrogenated Tallow Amide

3.5

A synthetic emulsifier that helps cleansers foam and rinse clean, but may be drying or irritating for sensitive skin.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Emulsifier

PEG-14 Laurate

PEG-14 Laurate

3.8

A gentle synthetic emulsifier that helps mix oil and water, generally safe but may be too heavy for very oily skin in high concentrations.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Emulsifier

PEG-14 Oleate

PEG-14 Oleate

3.5

PEG-14 Oleate is a safe, widely used emulsifier that helps mix oil and water in cleansers and creams, but may be best avoided by those with very sensitive or compromised skin.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Emulsifier

PEG-14 Tallate

PEG-14 TALLATE

3.5

A functional emulsifier that helps mix water and oil, but may be slightly irritating for sensitive skin and has moderate comedogenic potential.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
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Emulsifier

PEG-15 Castor Oil

PEG-15 Castor Oil

3.8

PEG-15 Castor Oil is a gentle emulsifier that helps mix water and oil in cleansers, but its PEG component raises mild environmental and purity concerns.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

PEG-15 Cocamine

PEG-15 Cocamine

3.5

PEG-15 Cocamine helps mix oil and water and reduces static in hair, but may be mildly irritating for sensitive skin.

Irritation

moderate

Source

semi-synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

PEG-15 Cocamine Oleate/Phosphate

PEG-15 COCAMINE OLEATE/PHOSPHATE

3.5

An effective cleansing agent but may be drying or irritating for sensitive skin, especially in high concentrations.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Antistatic Agent

PEG-15 Cocomonium Chloride

PEG-15 Cocomonium Chloride

3.5

An effective antistatic and conditioning agent for hair, but may cause irritation for sensitive scalps at higher concentrations.

Irritation

moderate

Source

semi-synthetic

beautyhaircaresurfactant
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Surfactant

PEG-15 Cocomonium Methosulfate

PEG-15 Cocomonium Methosulfate

3.8

A gentle surfactant that cleanses without stripping, often used to soften the feel of stronger cleansers.

Irritation

low

Source

semi-synthetic

beautyskincarehaircaresurfactant
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Surfactant

PEG-15 Cocopolyamine

PEG-15 Cocopolyamine

3.5

PEG-15 Cocopolyamine is a synthetic surfactant that helps cleanse and reduce static in hair, but it may cause mild irritation for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

PEG-15 Hydrogenated Tallow Amine

PEG-15 Hydrogenated Tallow Amine

3.5

A synthetic emulsifier that helps mix oil and water, but may cause irritation or clog pores in sensitive or acne-prone individuals.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Emulsifier

PEG-15 Hydroxystearate

PEG-15 Hydroxystearate

3.8

A reliable emulsifier that helps oil and water mix in your skincare, but it's synthetic and may not suit those avoiding PEGs.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Surfactant

PEG-15 Jojoba Acid

PEG-15 Jojoba Acid

3.8

A gentle, semi-synthetic surfactant derived from jojoba oil that helps cleanse without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Emulsifier

PEG-15 Jojoba Alcohol

PEG-15 JOJOBA ALCOHOL

3.8

A gentle emulsifier derived from jojoba oil that helps blend water and oil in formulas, generally well-tolerated but may not suit ultra-sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

PEG-15 Oleamine

PEG-15 Oleamine

3.5

PEG-15 Oleamine is a synthetic emulsifier that helps mix oil and water, but it may be irritating for sensitive skin and has moderate comedogenic potential.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Antistatic Agent

PEG-15 Oleammonium Chloride

PEG-15 Oleammonium Chloride

3.8

A synthetic conditioning agent that reduces static and improves feel in hair products, but may cause irritation or clog pores in sensitive individuals.

Irritation

moderate

Source

synthetic

beautyskincarehaircaresurfactant
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Emulsifier

PEG-15 Oleate

PEG-15 Oleate

3.5

PEG-15 Oleate is a synthetic emulsifier that helps mix oil and water, but it may be mildly irritating for sensitive skin and has moderate comedogenic potential.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
Read ingredient review