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 38 of 278
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 Rosinate

Sodium Rosinate

3.5

Sodium Rosinate is a natural foaming agent from pine rosin, effective in cleansers but can be drying or irritating for sensitive skin.

Irritation

moderate

Source

natural

beautyskincarecleansing
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Surfactant

Sodium Sarcosinate

Sodium Sarcosinate

4.0

A mild, amino-acid-based surfactant that cleanses without stripping the skin's natural moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Sodium Stearyl Dimethyl Glycine

Sodium Stearyl Dimethyl Glycine

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Sodium Stearyl Sulfate

Sodium Stearyl Sulfate

3.5

Sodium Stearyl Sulfate is a mild cleansing agent that creates foam but can be drying for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
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Surfactant

Sodium Tallowamphoacetate

SODIUM TALLOWAMPHOACETATE

3.8

A mild, animal-derived surfactant that cleans without stripping the skin, but may not suit vegans or those avoiding animal ingredients.

Irritation

low

Source

natural

beautyskincarecleansing
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Surfactant

Sodium Toluenesulfonate

Sodium Toluenesulfonate

3.5

Sodium Toluenesulfonate is a synthetic helper ingredient that keeps cleansers clear and well-mixed, but it can be slightly drying for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
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Surfactant

Sodium Trideceth-12 Carboxylate

SODIUM TRIDECETH-12 CARBOXYLATE

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Sodium Trideceth-4 Carboxylate

SODIUM TRIDECETH-4 CARBOXYLATE

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Sorbeth-12 Hexacocoate

SORBETH-12 HEXACOCOATE

4.0

A mild, coconut-derived cleansing agent that helps remove dirt and oil without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Sorbeth-2 Cocoate

SORBETH-2 COCOATE

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Soyamide DIPA

SOYAMIDE DIPA AMIDES

3.5

A gentle, plant-based surfactant that helps create rich lather and thicken cleansers, but may be less effective in hard water.

Irritation

low

Source

natural

beautyskincarecleansing
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Surfactant

Sulfated Castor Oil

Sulfated Castor Oil

3.8

A mild, plant-derived surfactant that cleans without stripping, but may feel heavy on oily skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Sulfated Peanut Oil

SULFATED PEANUT OIL

3.5

A mild, water-soluble cleanser derived from peanut oil, but not suitable for anyone with peanut allergies.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Bleaching Agent

TAED

Tetraacetylethylenediamine

2.5

TAED is a synthetic bleach activator that boosts whitening and brightening effects, but it can be irritating and is not a standard skincare ingredient for everyday use.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
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Surfactant

TEA-C12-13 Alkyl Phosphate

TEA-C12-13 Alkyl Phosphate

3.5

A mild-ish synthetic surfactant that helps cleanse without stripping, but may still irritate very sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
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Surfactant

TEA-C12-13 Alkyl Sulfate

TEA-C12-13 Alkyl Sulfate

3.5

A synthetic surfactant that effectively cleanses and foams, but may be drying or irritating for sensitive skin types.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
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Surfactant

TEA-Canolate

TEA-Canolate

3.5

TEA-Canolate is a mild cleansing agent from canola oil, but may be slightly drying for sensitive skin.

Irritation

moderate

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

TEA-Cocoate

TEA-Cocoate

3.5

TEA-Cocoate is a gentle cleansing agent that helps remove dirt and oil, but it may be slightly drying for very sensitive skin.

Irritation

moderate

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

TEA-Hydrogenated Cocoate

TEA-Hydrogenated Cocoate

3.5

A mild cleansing agent that helps remove dirt and oil, but may cause irritation for very sensitive skin.

Irritation

moderate

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

TEA-Laneth-5 Sulfate

TEA-LANETH-5 SULFATE

3.5

A gentle surfactant that cleans without stripping, but may be slightly pore-clogging for acne-prone skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

TEA-Lauryl Ether

TEA-Lauryl Ether

3.5

TEA-Lauryl Ether is an effective cleansing agent but may cause irritation for sensitive skin types.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
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Surfactant

TEA-Myristaminopropionate

TEA-MYRISTAMINOPROPIONATE

4.0

A gentle surfactant that helps create a rich, creamy lather while being less stripping than many common cleansers.

Irritation

low

Source

synthetic

beautyskincarecleansing
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Surfactant

TEA-Myristyl Aspartate

TEA-Myristyl Aspartate

4.0

A mild, amino-acid-based surfactant that helps create a creamy lather without stripping the skin's moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

TEA-Palmitate

TEA-PALMITATE

3.5

TEA-Palmitate helps cleansers foam and creams feel smooth, but it can be drying or irritating for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
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Surfactant

TIPA-C12-14 Pareth-3 Acetate

TIPA-C12-14 PARETH-3 ACETATE

3.8

A mild, semi-synthetic surfactant that helps create a rich lather while being gentle enough for sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Trideceth-20

Trideceth-20

4.0

A gentle, water-soluble surfactant that helps cleanse without stripping the skin’s natural moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansingemulsifier
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Surfactant

Trideceth-3 Carboxylic Acid

TRIDECETH-3 CARBOXYLIC ACID

4.0

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

Irritation

low

Source

synthetic

beautyskincarecleansing
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Surfactant

Trideceth-3 Phosphate

TRIDECETH-3 PHOSPHATE

3.8

A mild synthetic surfactant that helps cleanse without stripping, but may cause irritation for very sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
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Surfactant

Trideceth-7 Carboxylic Acid

TRIDECETH-7 CARBOXYLIC ACID

4.0

A gentle synthetic surfactant that helps cleanse without stripping the skin, often used in milder formulas.

Irritation

low

Source

synthetic

beautyskincarecleansing
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Surfactant

Trisodium Sulfosuccinate

TRISODIUM SULFOSUCCINATE

3.8

A gentle, synthetic surfactant that effectively cleanses without the harshness of traditional sulfates, making it a good option for sensitive skin.

Irritation

low

Source

synthetic

beautyskincarecleansing
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