3.5
A synthetic emulsifier that helps mix oil and water, but may cause irritation in sensitive skin at high concentrations.
Irritation
moderate
Source
synthetic
beautyskincaresurfactant
Read ingredient reviewBeauty ingredient research
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20769
Reviewed ingredients
524
Low-concern standouts
2884
Need usage caution
Showing 17 of 1,097
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
3.5
Undeceth-5 is a synthetic emulsifier that helps mix oil and water, but it may cause mild irritation for sensitive skin types.
Irritation
moderate
Source
synthetic
beautyskincaresurfactant
Read ingredient review3.5
Undeceth-7 is a gentle synthetic emulsifier that helps mix oil and water in cleansers and lotions, with a low risk of irritation.
Irritation
low
Source
synthetic
beautyskincaresurfactant
Read ingredient review3.5
Undeceth-8 is a gentle synthetic emulsifier that helps mix oil and water in cleansers and lotions, with a low risk of irritation.
Irritation
low
Source
synthetic
beautyskincaresurfactant
Read ingredient review3.8
Undeceth-9 is a workhorse emulsifier that helps products feel smooth and spread evenly, but it can be slightly drying or irritating for sensitive skin.
Irritation
moderate
Source
synthetic
beautyskincaresurfactant
Read ingredient review3.8
A gentle synthetic surfactant that helps cleanse without stripping, often used in mild formulations.
Irritation
low
Source
synthetic
beautyskincaresurfactant
Read ingredient review3.5
Undecylenamide DEA is a synthetic foaming agent that helps cleansers lather and thicken, but it can be drying or irritating for sensitive skin.
Irritation
moderate
Source
synthetic
beautyskincaresurfactant
Read ingredient review3.8
Undecylenamide MEA is a synthetic surfactant and antimicrobial that helps cleanse and control microbes, but may be drying or irritating for sensitive skin.
Irritation
moderate
Source
synthetic
beautyskincaresurfactant
Read ingredient review4.0
A gentle, low-irritation surfactant that helps create a rich lather and improve product texture without stripping the skin.
Irritation
low
Source
semi-synthetic
beautyskincaresurfactant
Read ingredient review3.5
Undecyleneth-6 is a synthetic emulsifier that helps mix oil and water, but it may be mildly irritating for sensitive skin.
Irritation
moderate
Source
synthetic
beautyskincaresurfactant
Read ingredient review4.0
A mild, 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
beautyskincaresurfactant
Read ingredient review4.3
A gentle, amino-acid-based ingredient that helps control oil and support a balanced skin microbiome without stripping the skin.
Irritation
low
Source
semi-synthetic
beautyskincaresurfactant
Read ingredient review4.3
A mild, oat-derived cleansing agent that cleans without stripping and may help calm sensitive skin.
Irritation
low
Source
semi-synthetic
beautyskincaresurfactant
Read ingredient review4.3
A mild, amino-acid-based cleanser that effectively removes dirt and oil while leaving skin feeling soft and balanced.
Irritation
low
Source
semi-synthetic
beautyskincaresurfactant
Read ingredient review3.5
Wheat Germamide DEA helps create rich lather and thicker textures in cleansers, but may cause mild irritation for sensitive skin.
Irritation
moderate
Source
semi-synthetic
beautyskincaresurfactant
Read ingredient review4.0
A gentle, wheat-derived surfactant that cleans without stripping the skin, ideal for sensitive or dry skin types.
Irritation
low
Source
semi-synthetic
beautyskincaresurfactant
Read ingredient review4.0
A gentle, wheat-derived surfactant that boosts foam and improves the feel of cleansers without stripping the skin.
Irritation
low
Source
natural
beautyskincaresurfactant
Read ingredient review