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 20,303
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

Chelating Agent

Disodium EDTA

Disodium EDTA

4.0

Disodium EDTA is a safe, widely used stabilizer that protects your skincare products from metal contamination, helping them stay effective longer.

Irritation

low

Source

synthetic

beautyskincarestabilizer
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Antioxidant

Disodium EDTA-Copper

DISODIUM EDTA-COPPER

3.8

A copper-infused version of EDTA that offers antioxidant benefits and supports skin repair, but is less studied than other copper forms.

Irritation

low

Source

synthetic

beautyskincareantioxidant
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Chelating Agent

Disodium Etidronate

Disodium Etidronate

4.0

A gentle chelating agent that helps preserve product freshness and enhances the performance of other ingredients.

Irritation

low

Source

synthetic

beautyskincarechelating agent
Read ingredient review

Humectant

Disodium Glucose Phosphate

Disodium Glucose Phosphate

4.2

Disodium Glucose Phosphate is a mild, sugar-derived humectant that boosts skin hydration without common irritation or stickiness.

Irritation

low

Source

semi-synthetic

beautyskincarehumectant
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Soothing Agent

Disodium Glycyrrhizate

Disodium Glycyrrhizate

4.5

A gentle, plant-derived soother that helps calm redness and irritation without clogging pores.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Skin Conditioning Agent

Disodium Guanylate

Disodium Guanylate

3.5

Disodium guanylate is a gentle skin-conditioning ingredient that helps improve product texture and hydration, but its benefits are subtle and best appreciated in well-formulated products.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
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Chelating Agent

Disodium Hydroxyethyliminodiacetate

DISODIUM HYDROXYETHYLIMINODIACETATE

4.0

A gentle chelating agent that helps your skincare products stay effective and stable by neutralizing hard-water minerals.

Irritation

low

Source

synthetic

beautyskincarechelating agent
Read ingredient review

Antioxidant

Disodium Hydroxysulfinoacetate

DISODIUM HETHYLSULFINOACETATE

3.5

A synthetic antioxidant that helps keep skincare products fresh, but it's not a star ingredient for your skin's health.

Irritation

low

Source

synthetic

beautyskincarepreservative
Read ingredient review

Surfactant

Disodium Hydroxysulfoacetate

DISODIUM HYDROXYSULFOACETATE

4.0

A gentle, sulfate-free surfactant that effectively cleanses without over-drying, making it a good choice for sensitive skin.

Irritation

low

Source

synthetic

beautyskincarecleanser
Read ingredient review

Humectant

Disodium Inosinate

Disodium Inosinate

3.5

Disodium Inosinate is a gentle humectant that may help support skin hydration and barrier function, but research is still early.

Irritation

low

Source

natural

beautyskincarehumectant
Read ingredient review

Surfactant

Disodium Isodecyl Sulfosuccinate

DISODIUM ISODECYL SULFOSUCCINATE

4.0

A gentle, sulfate-free surfactant that effectively cleanses without over-drying, making it ideal for sensitive or dry skin.

Irritation

low

Source

synthetic

beautyskincarecleanser
Read ingredient review

Surfactant

Disodium Isostearoamphodiacetate

DISODIUM ISOSTEAROAMPHODIACETATE

4.0

A gentle, low-irritation surfactant that helps create a creamy lather without stripping the skin's natural moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
Read ingredient review

Surfactant

Disodium Isostearoamphodipropionate

DISODIUM ISOSTEAROAMPHODIPROPIONATE

4.0

A gentle, low-irritation surfactant that cleanses without stripping the skin barrier, making it ideal for sensitive or dry skin.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

Disodium Laureth-5 Sulfosuccinate

DISODIUM LAURAMIDO PEG-5 SULFOSUCCINATE

4.0

A gentle, sulfate-free surfactant that cleanses without stripping the skin, ideal for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
Read ingredient review

Surfactant

Disodium Laureth-6 Sulfosuccinate

DISODIUM LAURETH-6 SULFOSUCCINATE

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
Read ingredient review

Surfactant

Disodium Laureth-7 Citrate

DISODIUM LAURETH-7 CITRATE

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
Read ingredient review

Surfactant

Disodium Laureth-9 Sulfosuccinate

DISODIUM LAURETH-9 SULFOSUCCINATE

4.0

A gentle, low-irritation surfactant that effectively cleanses while being kinder to sensitive skin than many harsher alternatives.

Irritation

low

Source

synthetic

beautyskincarecleanser
Read ingredient review

Surfactant

Disodium Lauriminodipropionate

Disodium Lauriminodipropionate

4.0

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

Irritation

low

Source

synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

Disodium Lauroamphodipropionate

DISODIUM LAUROAMPHODIPROPIONATE

4.0

A gentle, synthetic surfactant that helps create a rich lather while keeping cleansers non-stripping — a great choice for sensitive or dry skin.

Irritation

low

Source

synthetic

beautyskincarecleanser
Read ingredient review

Surfactant

Disodium Lauroyl Glutamate

DISODIUM LAUROYL GLUTAMATE

4.5

A mild, effective cleanser that respects the skin barrier and is well-tolerated by sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
Read ingredient review

Surfactant

Disodium Lauryl Phosphate

DISODIUM LAURYL PHOSPHATE

3.8

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

Irritation

low

Source

synthetic

beautyskincarecleansing agent
Read ingredient review

Skin brightening agent

Disodium Malyl Tyrosinate

Disodium Malyl Tyrosinate

3.8

A gentle, synthetic brightener that may help fade dark spots with minimal irritation, but clinical evidence is still limited.

Irritation

low

Source

synthetic

beautyskincarebrightening agent
Read ingredient review

Surfactant

Disodium N-Lauroyl Aspartate

Disodium N-Lauroyl Aspartate

4.3

A mild, amino-acid-based cleanser that effectively removes dirt and oil while respecting the skin barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
Read ingredient review

Antioxidant

Disodium NADH

DISODIUM NADH

3.8

Disodium NADH is a promising antioxidant that supports skin cell energy, but research is still early and it's less proven than classic antioxidants like vitamin C.

Irritation

low

Source

biotech

beautyskincareantioxidant
Read ingredient review

Surfactant

Disodium Oleamido MIPA-Sulfosuccinate

Disodium Oleamido MIPA-Sulfosuccinate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
Read ingredient review

Surfactant

Disodium Oleoamphodipropionate

Disodium Oleoamphodipropionate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
Read ingredient review

Surfactant

Disodium Oleth-3 Sulfosuccinate

DISODIUM OLETH-3 SULFOSUCCINATE

4.0

A gentle, low-irritation surfactant ideal for sensitive skin and baby care, but may not be suitable for very dry or compromised skin due to its cleansing nature.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
Read ingredient review

Surfactant

Disodium Oleyl Phosphate

Disodium Oleyl Phosphate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

Disodium Oleyl Sulfosuccinate

Disodium Oleyl Sulfosuccinate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
Read ingredient review