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 Scymnol Sulfate

Sodium Scymnol Sulfate

4.0

A mild, naturally derived surfactant that cleanses without stripping the skin barrier, but its shark origin raises sustainability concerns.

Irritation

low

Source

natural

beautyskincarecleanser
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Surfactant

Sodium Sesamphoacetate

Sodium Sesamphoacetate

4.3

A gentle, coconut-free alternative to traditional surfactants that cleans effectively while being kind to sensitive and dry skin.

Irritation

low

Source

natural

beautyskincarecleanser
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Surfactant

Sodium Soyate

Sodium Soyate

4.0

A mild, plant-based soap that effectively cleanses without stripping the skin, making it a good choice for sensitive skin.

Irritation

low

Source

natural

beautyskincarecleanser
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Surfactant

Sodium Stearic Acid Sulfate

Sodium Stearic Acid Sulfate

3.5

A mild, effective cleansing agent that helps remove dirt and oil without stripping the skin, but may not suit very sensitive scalps.

Irritation

low

Source

synthetic

beautyskincarecleanser
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Surfactant

Sodium Stearoamphoacetate

Sodium Stearoamphoacetate

4.0

A gentle, low-irritation surfactant that helps cleanse skin and hair without stripping natural moisture.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Stearoamphopropionate

Sodium Stearoamphopropionate

4.0

A gentle, low-irritation surfactant that helps cleanse without stripping the skin's natural moisture barrier.

Irritation

low

Source

synthetic

beautyskincarecleanser
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Surfactant

Sodium Stearoyl Glutamate

Sodium Stearoyl Glutamate

4.5

A gentle, skin-friendly surfactant that cleanses effectively without the harshness of traditional sulfates.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Stearoyl Lactalbumin

Sodium Stearoyl Lactalbumin

4.0

A mild, protein-derived surfactant that cleanses gently and helps maintain skin's moisture barrier, ideal for sensitive or dry skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Stearoyl Pea Protein

Sodium Stearoyl Pea Protein

4.0

A mild, eco-friendly surfactant and conditioner that cleans without stripping, ideal for sensitive or dry skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanserconditioner
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Surfactant

Sodium Sunflowerseedate

Sodium Sunflowerseedate

4.3

A mild, plant-based surfactant that cleanses effectively while being kind to sensitive and dry skin types.

Irritation

low

Source

natural

beautyskincarecleanser
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Surfactant

Sodium Sweet Almondate

Sodium Sweet Almondate

4.0

A mild, soap-like cleanser from sweet almond oil that effectively removes impurities while being gentle on sensitive skin.

Irritation

low

Source

natural

beautyskincarecleanser
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Surfactant

Sodium Tallamphopropionate

Sodium Tallamphopropionate

3.8

A gentle, plant-derived surfactant that cleanses effectively with low irritation potential, but may not suit those with very sensitive skin or tree allergies.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Tallow Sulfate

Sodium Tallow Sulfate

3.8

An effective, animal-derived surfactant that cleans thoroughly but may be drying for sensitive or dry skin.

Irritation

moderate

Source

natural

beautyskincarecleanser
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Surfactant

Sodium Tallowate

Sodium Tallowate

3.5

A traditional soap ingredient that cleans effectively but can be drying for some skin types.

Irritation

moderate

Source

natural

beautyskincarecleanser
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Surfactant

Sodium Taurate

Sodium Taurate

4.0

Sodium Taurate is a gentle, amino-acid-based surfactant that cleanses effectively while being kind to sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Trideceth Sulfate

Sodium Trideceth Sulfate

3.5

A milder alternative to sodium lauryl sulfate that effectively cleanses without stripping the skin.

Irritation

low

Source

synthetic

beautyskincarecleanser
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Surfactant

Sodium Trideceth-3 Carboxylate

SODIUM TRIDECETH-3 CARBOXYLATE

4.0

A gentle, non-stripping surfactant that effectively cleanses while being kind to sensitive and dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Trideceth-8 Carboxylate

SODIUM TRIDECETH-8 CARBOXYLATE

4.0

A gentle, semi-synthetic surfactant that cleanses effectively while being less likely to irritate or dry out the skin compared to harsher detergents.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Tridecylbenzenesulfonate

Sodium Tridecylbenzenesulfonate

3.5

A strong synthetic cleanser that effectively removes dirt and oil but may be drying or irritating for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleanser
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Surfactant

Sodium Undecylenoamphoacetate

Sodium Undecylenoamphoacetate

4.0

A gentle, amphoteric surfactant that cleans effectively without stripping the skin, often used in sensitive-skin and baby formulations.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Undecylenoamphopropionate

Sodium Undecylenoamphopropionate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Undecylenoyl Glutamate

Sodium Undecylenoyl Glutamate

4.5

A gentle, amino-acid-based cleanser that effectively removes dirt and oil without stripping the skin barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Wheat Germamphoacetate

Sodium Wheat Germamphoacetate

4.0

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

Irritation

low

Source

natural

beautyskincarecleanser
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Surfactant

Sodium/MEA Laureth-2 Sulfosuccinate

SODIUM/MEA LAURETH-2 SULFOSUCCINATE

4.0

A gentle, low-irritation surfactant ideal for sensitive skin and baby care, but it may not foam as richly as harsher cleansers.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sorbeth-60 Tetraoleate

SORBETH-60 TETRAOLEATE

4.0

A mild, oil-loving emulsifier that helps rinse away makeup and sunscreen without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanseremulsifier
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Surfactant

Stearyl Acetyl Glutamate

Stearyl Acetyl Glutamate

4.3

A mild, amino-acid-based cleanser that effectively removes dirt and oil while respecting your skin's natural balance.

Irritation

low

Source

semi-synthetic

beautyskincarecleanseremulsifier
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Surfactant

Sucrose Polysoyate

SUCROSE POLYSOYATE

4.3

A mild, biodegradable surfactant that cleanses without stripping the skin barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sulfated Coconut Oil

Sodium Coco-Sulfate

4.0

A gentle, coconut-derived surfactant that cleanses effectively without the harshness of traditional sulfates.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sulfated Glyceryl Oleate

Sulfated Glyceryl Oleate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Tallow Dihydroxyethyl Betaine

Tallow Dihydroxyethyl Betaine

3.8

A gentle, animal-derived surfactant that cleans without stripping the skin—good for sensitive skin but not suitable for vegans.

Irritation

low

Source

natural

beautyskincarecleanser
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Surfactant

TEA C14-17 Alkyl Sec Sulfonate

TEA C14-17 ALKYL SEC SULFONATE

3.8

A gentle, effective cleanser that removes dirt and oil without stripping the skin, but may not suit ultra-sensitive scalps.

Irritation

low

Source

synthetic

beautyskincarecleanser
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Surfactant

TEA-C11-15 Alkyl Sulfate

TEA-C11-15 Alkyl Sulfate

3.5

A strong synthetic cleanser that effectively removes dirt and oil but may be drying or irritating for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleanser
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Surfactant

TEA-C12-14 Alkyl Phosphate

TEA-C12-14 Alkyl Phosphate

3.8

A mild synthetic surfactant that effectively cleanses without stripping the skin's natural moisture barrier.

Irritation

low

Source

synthetic

beautyskincarecleanser
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Surfactant

TEA-C12-14 Alkyl Sulfate

TEA-C12-14 Alkyl Sulfate

3.8

A mild foaming cleanser that effectively removes dirt and oil, but may be drying for very sensitive or dry skin.

Irritation

moderate

Source

synthetic

beautyskincarecleanser
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Surfactant

TEA-C12-15 Alkyl Sulfate

TEA-C12-15 Alkyl Sulfate

3.5

An effective foaming cleanser that can be drying or irritating for sensitive skin, but is generally considered safe in rinse-off products.

Irritation

moderate

Source

synthetic

beautyskincarecleanser
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Surfactant

TEA-Coco-Sulfate

TEA-Coco-Sulfate

3.8

A coconut-derived surfactant that cleans effectively but may be drying for sensitive skin.

Irritation

moderate

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Tea-Cocoyl Alaninate

TEA-Cocoyl Alaninate

4.5

A gentle, amino-acid-based cleanser that effectively removes dirt and oil without stripping the skin, making it ideal for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

TEA-Cocoyl Glutamate

TEA-Cocoyl Glutamate

4.5

A gentle, plant-derived 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

TEA-Cocoyl Glutaminate

TEA-COCOYL GLUTAMINATE

4.2

A gentle, amino-acid-based surfactant that cleanses effectively while respecting the skin barrier — ideal for sensitive or dry skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

TEA-Cocoyl Glycinate

TEA-Cocoyl Glycinate

4.5

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

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

TEA-Cocoyl Sarcosinate

TEA-Cocoyl Sarcosinate

4.3

A gentle, amino-acid-based cleanser that effectively removes impurities while being kind to sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

TEA-Dodecylbenzenesulfonate

TEA-Dodecylbenzenesulfonate

3.5

An effective but potentially drying surfactant best suited for rinse-off cleansers, not for sensitive or dry skin.

Irritation

moderate

Source

synthetic

beautyskincarecleanser
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Surfactant

TEA-Lauraminopropionate

TEA-Lauraminopropionate

3.8

A gentle surfactant that effectively cleanses without stripping the skin, suitable for sensitive skin types.

Irritation

low

Source

synthetic

beautyskincarecleanser
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Surfactant

TEA-Laurate/Myristate

TEA-Laurate/Myristate

3.5

A synthetic cleansing agent that can be effective but may cause irritation for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleanser
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