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 626
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

Sodium Lauryl Sulfoacetate

Sodium Lauryl Sulfoacetate

4.5

A mild, coconut-derived surfactant that cleanses effectively without the irritation often associated with sodium lauryl sulfate (SLS).

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Macadamiaseedate

SODIUM MACADAMIASEEDATE

4.0

A mild, plant-derived cleanser that effectively removes dirt and oil without stripping the skin's natural moisture barrier.

Irritation

low

Source

natural

beautyskincarecleanser
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Surfactant

Sodium Mangoseedate

Sodium Mangoseedate

4.0

A mild, plant-derived cleanser that effectively removes dirt and oil without stripping the skin, making it a great choice for sensitive or dry skin types.

Irritation

low

Source

natural

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Surfactant

Sodium Methyl 2-Sulfolaurate

SODIUM METHYL 2-SULFOLAURATE

4.3

A gentle, coconut-derived surfactant that cleans effectively without stripping the skin, ideal for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Methyl Cocoyl Taurate

Sodium Methyl Cocoyl Taurate

4.5

A mild, coconut-derived surfactant that cleanses effectively without over-drying, making it ideal for sensitive and dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Methyl Lauroyl Taurate

Sodium Methyl Lauroyl Taurate

4.5

A mild, effective cleanser that's ideal for sensitive or dry skin, offering a creamy lather without irritation.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Methyl Myristate Sulfonate

Sodium Methyl Myristate Sulfonate

4.0

A gentle, effective cleanser that removes dirt and oil without stripping the skin, making it a popular sulfate alternative.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Methyl Oleoyl Taurate

SODIUM METHYL OLEOYL TAURATE

4.5

A mild, sulfate-free surfactant that cleanses without stripping the skin, making it ideal for sensitive and dry skin types.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Methyl Stearate Sulfonate

Sodium Methyl Stearate Sulfonate

4.0

A gentle, soap-free surfactant that cleans effectively while being kinder to sensitive skin than traditional sulfates.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Methyl Stearoyl Taurate

Sodium Methyl Stearoyl Taurate

4.3

A mild, sulfate-free surfactant that cleanses effectively without stripping the skin barrier, making it ideal for sensitive or dry skin.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Methyltaurate

Sodium Methyltaurate

4.0

A mild, taurine-based surfactant that cleanses effectively while being gentle on the skin barrier.

Irritation

low

Source

synthetic

beautyskincarecleanser
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Surfactant

Sodium Myreth Sulfate

Sodium Myreth Sulfate

3.5

A milder alternative to SLS that effectively cleanses but may still be drying for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleanser
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Surfactant

Sodium Myristoamphoacetate

Sodium Myristoamphoacetate

4.0

A gentle, coconut-derived surfactant that cleans effectively without over-drying, making it a good choice for sensitive or dry skin.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Myristoyl Hydrolyzed Collagen

Sodium Myristoyl Hydrolyzed Collagen

4.0

A gentle, amino-acid-based surfactant that cleanses without stripping the skin, making it a good choice for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Myristoyl Isethionate

Sodium Myristoyl Isethionate

4.5

A mild, coconut-derived cleanser that removes impurities without stripping the skin barrier, ideal for sensitive and dry skin types.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Octoxynol-2 Sulfate

SODIUM OCTOXYNOL-2 SULFATE

3.5

A moderately strong synthetic cleanser that can be effective but may cause irritation for sensitive skin types.

Irritation

moderate

Source

synthetic

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Surfactant

Sodium Octoxynol-6 Sulfate

SODIUM OCTOXYNOL-6 SULFATE

3.5

A mild to moderate synthetic cleanser that effectively removes oil and dirt but may cause irritation for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleanser
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Surfactant

Sodium Oleoamphoacetate

Sodium Oleoamphoacetate

4.0

A gentle, amphoteric surfactant that cleanses effectively while being kind to sensitive skin.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Oleoyl Isethionate

Sodium Oleoyl Isethionate

4.5

A mild, coconut-derived cleanser that effectively removes dirt and oil while respecting the skin barrier.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Oleoyl Sarcosinate

Sodium Oleoyl Sarcosinate

4.3

A gentle, amino-acid-based surfactant that cleanses without stripping the skin barrier, ideal for sensitive or dry skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Oleth Sulfate

Sodium Oleth Sulfate

3.5

A moderately strong cleansing agent that can effectively remove dirt and oil but may be drying or irritating for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleanser
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Surfactant

Sodium Oleyl Methyl Isethionate

Sodium Oleyl Methyl Isethionate

4.5

A gentle, sulfate-free surfactant that cleanses effectively without stripping the skin's natural moisture barrier.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Oleyl Sulfate

Sodium Oleyl Sulfate

4.0

A gentle, plant-derived cleansing agent that effectively removes dirt and oil without stripping the skin's natural moisture barrier.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Olivamphoacetate

Sodium Olivamphoacetate

4.5

A gentle, olive-oil-derived surfactant that cleanses effectively without stripping the skin barrier.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Olivate

Sodium Olivate

4.0

A gentle, natural cleanser derived from olive oil that effectively removes dirt without stripping the skin.

Irritation

low

Source

natural

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Surfactant

Sodium Olivoyl Glutamate

Sodium Olivoyl Glutamate

4.5

A mild, amino-acid-based cleanser that effectively removes impurities while respecting the skin's moisture barrier.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Palm Glyceride Sulfonate

SODIUM PALM GLYCERIDE SULFONATE

4.0

A gentle, palm-derived surfactant that cleans without stripping the skin — a good alternative to traditional sulfates.

Irritation

low

Source

natural

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Surfactant

Sodium Palm Kernelate

Sodium Palm Kernelate

3.5

An effective but potentially drying cleanser derived from palm kernel oil; best for oily skin types and those who prefer traditional soap bars.

Irritation

moderate

Source

natural

beautyskincarecleanser
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Surfactant

Sodium Palmate

Sodium Palmate

3.5

Sodium Palmate is an effective cleanser from palm oil, but its high pH can be drying and its environmental impact raises sustainability concerns.

Irritation

moderate

Source

natural

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Surfactant

Sodium Passionfruit Seedate

SODIUM PASSIFLORA EDULIS SEEDATE

4.0

A mild, eco-friendly surfactant derived from passionfruit seeds that cleanses without stripping the skin.

Irritation

low

Source

natural

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Surfactant

Sodium Peanutamphoacetate

Sodium Peanutamphoacetate

4.0

A gentle, peanut-derived surfactant that cleanses effectively but may not suit those with peanut allergies.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium PEG-4 Cocamide Sulfate

SODIUM PEG-4 COCAMIDE SULFATE

3.5

A gentle, coconut-derived surfactant that effectively cleanses without stripping the skin, but may not be ideal for those avoiding PEG compounds.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium PEG-4 Lauramide Carboxylate

SODIUM PEG-4 LAURAMIDE CARBOXYLATE

3.8

A gentle, PEG-modified surfactant that cleanses without stripping the skin, but its PEG component raises mild environmental and purity concerns.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium PEG-4 Lauramide Sulfate

SODIUM PEG-4 LAURAMIDE SULFATE

3.5

A gentle synthetic surfactant that effectively cleanses without stripping the skin, but may not suit very sensitive types if used at high levels.

Irritation

low

Source

synthetic

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Surfactant

Sodium PEG-6 Cocamide Carboxylate

SODIUM PEG-6 COCAMIDE CARBOXYLATE

4.0

A gentle, coconut-derived surfactant that cleanses effectively while being kinder to sensitive skin than traditional sulfates.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Propoxy PPG-2 Acetate

SODIUM PROPOXY PPG-2 ACETATE

3.8

A mild synthetic surfactant that helps create a rich lather and leaves skin feeling clean without excessive dryness.

Irritation

moderate

Source

synthetic

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Surfactant

Sodium Rapeseedate

Sodium Rapeseedate

4.0

A mild, plant-derived cleanser that effectively removes dirt and oil without stripping the skin's natural moisture barrier.

Irritation

low

Source

natural

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Surfactant

Sodium Ricebranamphoacetate

Sodium Ricebranamphoacetate

4.0

A gentle, rice-derived surfactant that cleanses without stripping the skin, making it a great choice for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Rose Hip Amphoacetate

Sodium Rose Hipsamphoacetate

4.0

A mild, rosehip-derived surfactant that cleanses effectively while being gentle enough for sensitive skin.

Irritation

low

Source

semi-synthetic

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Surfactant

Sodium Safflowerate

Sodium Safflowerate

4.0

A mild, plant-based cleanser that effectively removes impurities while being gentle on the skin barrier.

Irritation

low

Source

natural

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