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 156
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

Magnesium Lauryl Sulfate

Magnesium Lauryl Sulfate

3.8

A moderately gentle sulfate surfactant that effectively removes dirt and oil but may still be drying for sensitive or dry skin.

Irritation

moderate

Source

synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Magnesium Tallowate

Magnesium Tallowate

3.8

A gentle, natural cleansing ingredient derived from tallow that effectively removes impurities without stripping the skin.

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

MEA-Undecylenate

MEA-Undecylenate

3.8

A mild cleansing agent with antimicrobial properties, best for rinse-off products and acne-prone skin.

Irritation

moderate

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Cleansing Agent

Methyl Myristic Acid

METHYL MYRISTIC ACID

3.5

A mild cleansing agent that helps remove dirt and oil without stripping the skin, but is rarely used alone in modern formulations.

Irritation

low

Source

synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

MIPA-Lauryl Sulfate

MIPA-Lauryl Sulfate

3.5

A strong foaming cleanser that can be drying or irritating for sensitive skin, but is effective at removing oil and buildup.

Irritation

moderate

Source

synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Myristic Acid

Myristic Acid

4.0

Myristic acid is a natural fatty acid that helps create a foamy lather in cleansers, but it can be drying or clog pores for some skin types.

Irritation

moderate

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Oleoyl Sarcosine

Oleoyl Sarcosine

4.0

Oleoyl sarcosine is a mild, amino-acid-derived surfactant that cleanses effectively while being gentle on the skin barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Oleth-3 Carboxylic Acid

OLETH-3 CARBOXYLIC ACID

3.8

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Oleth-6 Carboxylic Acid

OLETH-6 CARBOXYLIC ACID

4.0

A gentle, effective cleansing ingredient that helps remove dirt and oil without stripping the skin's natural moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Palmitoyl Glutamic Acid

Palmitoyl Glutamic Acid

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

PEG-7 Glyceryl Soyate

PEG-7 Glyceryl Soyate

4.0

A gentle, non-stripping surfactant derived from soybean oil that effectively cleanses while respecting the skin barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

PEG-78 Glyceryl Cocoate

PEG-78 Glyceryl Cocoate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

PEG-8 Undecylenate

PEG-8 Undecylenate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Cleansing Agent

Pelargonic Acid

PELARGONIC ACID

3.5

Pelargonic acid is a mild fatty acid that helps cleanse and adjust pH, but can be slightly drying for sensitive skin.

Irritation

moderate

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Poloxamine 707

Poloxamine 707

4.0

Poloxamine 707 is a mild synthetic surfactant that helps cleanse without stripping the skin, making it a good choice for sensitive or dry skin types.

Irritation

low

Source

synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Behenate

Potassium Behenate

4.0

A gentle soap ingredient that helps create a creamy lather and is generally well-tolerated by most skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Caprate

Potassium Caprate

3.8

Potassium caprate is an effective, plant-derived cleanser, but it can be drying or irritating for sensitive skin types if used in high concentrations.

Irritation

moderate

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Caprylate

Potassium Caprylate

4.0

Potassium Caprylate is an effective, mild cleansing agent that helps remove dirt and oil without stripping the skin, but may be drying for very sensitive skin types.

Irritation

moderate

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Caprylate/Caprate

Potassium Caprylate/Caprate

4.0

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

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Cyclocarboxypropyloleate

POTASSIUM CYCLOCARBOXYPROPYLOLEATE

3.5

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

Irritation

moderate

Source

synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Jojobate

Potassium Jojobate

4.0

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

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Lanolate

POTASSIUM LANOLATE

4.0

A gentle, lanolin-derived cleansing agent that effectively removes dirt and oil without stripping the skin, but may be comedogenic for some.

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Laurate

POTASSIUM LAURATE

3.8

An effective but potentially drying cleanser best suited for oily skin types and rinse-off formulas.

Irritation

moderate

Source

synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Laureth-3 Carboxylate

POTASSIUM LAURETH-3 CARBOXYLATE

4.0

A gentle, non-stripping surfactant that effectively cleanses while being kinder to sensitive skin than many traditional sulfates.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Linoleate

Potassium Linoleate

3.8

Potassium Linoleate is an effective, gentle cleanser that helps remove dirt and oil, but may be drying for very sensitive or dry skin types.

Irritation

moderate

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Linseedate

POTASSIUM LINSEEDATE

3.8

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

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Oleate

POTASSIUM OLEATE

3.5

Potassium oleate is an effective cleanser and emulsifier, but can be drying or irritating for sensitive skin due to its high pH.

Irritation

moderate

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Palm Kernelate

Potassium Palm Kernelate

3.8

A natural soap-making ingredient that effectively cleanses but can be drying for some skin types.

Irritation

moderate

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Palmate

Potassium Palmate

3.5

An effective but potentially drying cleanser derived from palm oil, best for normal to oily skin types.

Irritation

moderate

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Palmitate

Potassium Palmitate

3.8

An effective cleanser that can be drying for some skin types, best suited for normal to oily skin in rinse-off products.

Irritation

moderate

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Safflowerate

POTASSIUM SAFFLOWERATE

4.0

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

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Soyate

Potassium Soyate

4.0

A gentle, plant-derived cleanser that effectively removes impurities without stripping the skin's natural moisture barrier.

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Tallowate

Potassium Tallowate

3.5

Potassium Tallowate is a traditional soap ingredient that effectively cleanses but can be drying or irritating for sensitive skin.

Irritation

moderate

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Potassium Undecylenate

Potassium Undecylenate

3.8

Potassium undecylenate is an effective cleanser with mild antimicrobial properties, but it can be drying or irritating for sensitive skin types.

Irritation

moderate

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Quillaja Bark Extract

Quillaja Saponaria Bark Extract

4.0

A gentle, plant-derived surfactant that creates a mild foam and cleanses without stripping the skin's natural moisture barrier.

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Cleansing Agent

Saponified Rose Geranium Extract

PELARGONIUM GRAVEOLENS LEAF EXTRACT SAPONIFIED

3.8

A gentle, plant-derived cleansing ingredient with a pleasant rose-like scent, best suited for rinse-off products.

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Cleansing Agent

Soapberry Leaf Extract

Sapindus Mukorossi Leaf Extract

3.8

A mild botanical extract that can help cleanse skin without stripping it, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Soapwort Root Extract

Saponaria Officinalis Root Extract

4.0

A mild, plant-based cleanser that foams naturally and is generally well-tolerated, but may be drying for some skin types.

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Arachidate

Sodium Arachidate

3.5

Sodium Arachidate is a mild soap ingredient that helps cleanse and emulsify, but it's not a standout active for skin benefits.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium C14-18 Olefin Sulfonate

SODIUM C14-18 OLEFIN SULFONATE

3.5

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

Irritation

moderate

Source

synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Caprate

Sodium Caprate

3.8

A mild cleansing agent from coconut oil that helps remove dirt and oil, but may be drying for sensitive skin.

Irritation

moderate

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Caproyl Methyltaurate

Sodium Caproyl Methyltaurate

4.5

A mild, effective cleanser that creates a rich foam without stripping the skin, making it ideal for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Caprylate

Sodium Caprylate

4.0

A gentle, soap-like cleanser that helps remove dirt and oil without stripping the skin, making it a good choice for sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Castorate

Sodium Castorate

3.5

Sodium Castorate is a gentle, plant-derived soap ingredient that effectively cleanses but may be drying for sensitive skin.

Irritation

moderate

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Ceteareth-13 Carboxylate

Sodium Ceteareth-13 Carboxylate

4.0

A gentle, soap-free surfactant that cleans without stripping the skin, making it a good choice for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Coco/Babassu Sulfate

SODIUM COCO/BABASSU SULFATE

4.0

A gentle, plant-based sulfate that cleanses effectively without the harshness of traditional sodium lauryl sulfate.

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Cocoa Butterate

Sodium Cocoa Butterate

4.0

A mild, natural cleanser derived from cocoa butter that cleans without stripping the skin.

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Cocoate

Sodium Cocoate

4.0

Sodium cocoate is a natural, effective cleanser from coconut oil, but can be drying for sensitive or dry skin types.

Irritation

moderate

Source

natural

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Deceth-2 Carboxylate

Sodium Deceth-2 Carboxylate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Dilaureth-10 Phosphate

Sodium Dilaureth-10 Phosphate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Dilaureth-4 Phosphate

Sodium Dilaureth-4 Phosphate

4.0

A gentle synthetic surfactant that helps cleanse without stripping the skin's natural moisture barrier.

Irritation

low

Source

synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Hydrogenated Tallowate

Sodium Hydrogenated Tallowate

3.5

An effective but potentially drying cleanser derived from animal fat, best for oily skin types.

Irritation

moderate

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Hydroxystearate

Sodium Hydroxystearate

4.0

A mild cleansing ingredient that helps create a rich lather and stable bar soaps, generally well-tolerated by most skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Sodium Lanolate

Sodium Lanolate

3.8

Sodium Lanolate is a mild, lanolin-derived cleanser that effectively removes dirt and oil without stripping the skin, but may be comedogenic for some and is unsuitable for those with wool allergies.

Irritation

low

Source

natural

beautyskincarecleansing agent
Read ingredient review