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 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

Disodium Coceth-3 Sulfosuccinate

Disodium Coceth-3 Sulfosuccinate

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
Read ingredient review

Surfactant

Disodium Dodecenylsuccinate

DISODIUM DODECENYLSUCCINATE

3.5

An effective synthetic cleanser that can be drying for sensitive skin, but is generally safe when used in rinse-off formulations.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Disodium Stearoyl Glutamate

Disodium Stearoyl Glutamate

4.5

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansingemulsifier
Read ingredient review

Surfactant

Disodium Sulfoacetate

Disodium Sulfoacetate

3.8

A gentle synthetic surfactant that effectively cleanses without stripping the skin, making it a good option for sensitive skin.

Irritation

low

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Disodium Sulfolaurate/Myristate

DISODIUM 2-SULFOLAURATE/MYRISTATE

4.0

A gentle, biodegradable surfactant that cleans without stripping the skin, ideal for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Disodium Tallowiminodipropionate

Disodium Tallowiminodipropionate

3.5

An effective cleanser from animal fat, but may be drying for sensitive skin and raises ethical concerns for some users.

Irritation

moderate

Source

natural

beautyskincarecleansing
Read ingredient review

Surfactant

Disodium Tetrapopenyl Succinate

DISODIUM TETRAPROPENYL SUCCINATE

3.5

An effective synthetic cleanser that can be drying for sensitive skin; best suited for normal to oily skin types.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Ditridecyl Sodium Sulfosuccinate

DITRIDECYL SODIUM SULFOSUCCINATE

3.8

A gentle synthetic surfactant that effectively cleanses without stripping the skin, making it a good alternative to harsher sulfates.

Irritation

low

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Ethyl PEG-15 Cocamine Sulfate

ETHYL PEG-15 COCAMINE SULFATE

3.5

A gentle, coconut-derived surfactant that cleanses effectively but may not suit ultra-sensitive scalps in high concentrations.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Formamidopropyl Betaine

Formamidopropyl Betaine

3.8

A gentle cleansing agent that helps create a rich, creamy lather without stripping the skin's natural moisture barrier.

Irritation

low

Source

synthetic

beautyskincarecleansing
Read ingredient review

Emollient

Glycereth-17 Cocoate

GLYCERETH-17 COCOATE

4.0

A gentle, coconut-derived ingredient that cleanses without stripping and leaves skin feeling soft.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Gold of Pleasure Amino Acids

Capryloyl Gold of Pleasure Amino Acids

4.3

A mild, plant-derived surfactant that cleanses without stripping the skin, making it ideal for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Hexyloxodecanamide MEA

Hexyloxodecanamide MEA

3.5

Hexyloxodecanamide MEA is a synthetic surfactant that helps create rich lather in cleansers, but it may cause irritation for sensitive skin types.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Hydrolyzed Soy Protein Surfactant

SODIUM/TEA-UNDECYLENOYL HYDROLYZED SOY PROTEIN

4.0

A gentle, protein-based surfactant that cleanses without stripping the skin, making it ideal for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Isodeceth-2 Cocoate

ISODECETH-2 COCOATE

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Isolaureth-6

Isolaureth-6

3.5

Isolaureth-6 is a synthetic cleansing agent that helps remove dirt and oil, but may be slightly drying or irritating for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Isosteareth-11 Carboxylic Acid

ISOSTEARETH-11 CARBOXYLIC ACID

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Isosteareth-6 Carboxylic Acid

ISOSTEARETH-6 CARBOXYLIC ACID

3.8

A gentle surfactant that helps cleansers foam and remove dirt without stripping the skin's natural moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Lauramidopropyl Hydroxysultaine

Lauramidopropyl Hydroxysultaine

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Emulsifier

Laureth

Laureth

3.5

Laureth ingredients help blend oil and water in formulas, but some types can be mildly drying or irritating for sensitive skin.

Irritation

moderate

Source

semi-synthetic

beautyskincarecleansingemulsifier
Read ingredient review

Surfactant

Laureth-14

Laureth-14

3.5

An effective cleansing agent that can strip the skin's natural oils if used too frequently or in high concentrations.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Laureth-2 Acetate

Laureth-2 Acetate

3.8

Laureth-2 Acetate is a gentle synthetic surfactant that helps cleanse without over-drying, making it a good option for sensitive skin.

Irritation

low

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Laureth-4 Carboxylic Acid

Laureth-4 Carboxylic Acid

3.8

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

Irritation

moderate

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Laureth-5 Carboxylic Acid

LAURETH-5 CARBOXYLIC ACID

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Laureth-6 Carboxylic Acid

Laureth-6 Carboxylic Acid

4.0

A gentle, effective surfactant that cleans without stripping the skin's natural moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Laureth-8 Carboxylic Acid

LAURETH-8 CARBOXYLIC ACID

4.0

A gentle, non-stripping surfactant that cleanses effectively without disrupting the skin barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Lauroyl Methyl Glucamide

Lauroyl Methyl Glucamide

4.0

A gentle, biodegradable surfactant that cleans effectively without stripping the skin's natural moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Lauryl Betaine

Lauryl Betaine

4.3

A gentle, coconut-derived surfactant that helps create a rich lather while being much milder than traditional sulfates.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Lauryl Diethylenediaminoglycine

LAURYL DIETHYLENEDIAMINOGLYCINE

3.8

A gentle synthetic surfactant that effectively cleanses without being overly harsh, making it suitable for sensitive skin.

Irritation

low

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Lauryl Olivate

Lauryl Olivate

4.5

A mild, olive-derived cleansing agent that cleans without stripping the skin, making it ideal for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Lysine Cocoate

Lysine Cocoate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Magnesium Oleth Sulfate

Magnesium Oleth Sulfate

3.5

A mild cleansing agent that can effectively remove impurities but may cause irritation for sensitive skin types.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

MEA-PPG-8 Steareth-7 Carboxylate

MEA-PPG-8-STEARETH-7 CARBOXYLATE

4.0

A gentle synthetic surfactant that cleanses without stripping the skin, often used in sulfate-free and sensitive-skin formulas.

Irritation

low

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Minkamidopropylamine Oxide

Minkamidopropylamine Oxide

3.5

A mild surfactant that boosts foam and adds a silky feel, but its animal-derived origin raises ethical and allergen concerns.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Emulsifier

Minoxapol 742

Minoxapol 742

3.8

Minoxapol 742 is a gentle synthetic emulsifier that helps mix water and oil in skincare, but may not suit ultra-sensitive skin at high levels.

Irritation

low

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Multi-Oil Fruit & Seedate Complex

SODIUM (ASTROCARYUM VULGARE/EUTERPE OLERACEAE/PALM) FRUIT/(ASTROCARYUM VULGARE/PALM) KERNEL/(ASTROCARYUM MURUMURU/BABASSU/BERTHOLLETIA EXCELSA/CARAPA GUIANENSIS/COCOA/FEVILLEA TRILOBATA/PASSIFLORA EDULIS/THEOBROMA GRANDIFLORUM) SEEDATE

4.0

A gentle, plant-derived cleansing agent that effectively removes dirt and oil without stripping the skin.

Irritation

low

Source

natural

beautyskincarecleansing
Read ingredient review

Surfactant

Murumuru Butter Derivative

Sodium Astrocaryum Murumuruate

4.0

A mild, plant-derived surfactant that cleanses without stripping the skin, suitable for sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Myreth-3 Carboxylic Acid

MYRETH-3 CARBOXYLIC ACID

4.0

A gentle surfactant that cleans effectively without stripping the skin's natural moisture barrier, making it a good choice for sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Myreth-3 Laurate

MYRETH-3 LAURATE

3.8

A gentle surfactant that helps cleanse without stripping the skin, but it's not a star ingredient on its own.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Myreth-5 Carboxylic Acid

MYRETH-5 CARBOXYLIC ACID

4.0

A gentle synthetic surfactant that effectively cleanses without the harshness of traditional soaps, making it suitable for sensitive skin.

Irritation

low

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Myristamidopropyl Hydroxysultaine

MYRISTAMIDOPROPYL HYDROXYSULTAINE

4.0

A gentle, effective surfactant that cleanses without stripping the skin, making it a popular choice for sensitive skin formulas.

Irritation

low

Source

synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Myristoyl Methyl Beta-Alanine

Myristoyl Methyl Beta-Alanine

4.3

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review