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 20,769
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

Humectant

Sodium Lactate

Sodium Lactate

4.2

Sodium lactate is a gentle, water-loving humectant that hydrates the skin without clogging pores, making it a great option for sensitive or oily skin types.

Irritation

low

Source

semi-synthetic

beautyskincarehumectant
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Humectant

Sodium Lactate Methylsilanol

Sodium Lactate Methylsilanol

4.0

A gentle, multi-tasking humectant that combines the hydrating power of sodium lactate with the skin-smoothing benefits of methylsilanol.

Irritation

low

Source

semi-synthetic

beautyskincarehumectant
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Surfactant

Sodium Laneth Sulfate

SODIUM LANETH SULFATE

3.5

A gentle surfactant that cleans without stripping, but may not suit ultra-sensitive scalps or those avoiding ethoxylated ingredients.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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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
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Surfactant

Sodium Lardate

Sodium Lardate

3.5

Sodium Lardate is a traditional soap ingredient from animal fat that effectively cleanses but may be drying for some skin types.

Irritation

moderate

Source

natural

beautyskincarecleansing agent
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Surfactant

Sodium Lauramido Diacetate

SODIUM LAURAMIDO DIACETATE

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Sodium Lauraminopropionate

Sodium Lauraminopropionate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarehaircare
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Surfactant

Sodium Laurate

Sodium Laurate

3.5

Sodium Laurate is an effective cleanser but can be drying or irritating for sensitive skin.

Irritation

moderate

Source

natural

beautyskincarecleansing agent
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Surfactant

Sodium Laureth Sulfate

Sodium Laureth Sulfate

3.5

An effective foaming cleanser that can be drying or irritating for sensitive skin, but is generally safe in rinse-off products.

Irritation

moderate

Source

synthetic

beautyskincarecleanser
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Surfactant

Sodium Laureth-11 Carboxylate

SODIUM LAURETH-11 CARBOXYLATE

4.0

A gentle, non-stripping surfactant that cleanses without disrupting the skin barrier, ideal for sensitive or dry skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Laureth-12 Carboxylate

SODIUM LAURETH-12 CARBOXYLATE

4.0

A gentle, effective surfactant that cleanses without stripping the skin barrier, ideal for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Sodium Laureth-12 Sulfate

Sodium Laureth-12 Sulfate

3.5

A strong but slightly gentler cousin of SLS that effectively cleanses and foams, though it can still be drying for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
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Surfactant

Sodium Laureth-14 Carboxylate

SODIUM LAURETH-14 CARBOXYLATE

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Laureth-16 Carboxylate

SODIUM LAURETH-16 CARBOXYLATE

3.8

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
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Surfactant

Sodium Laureth-17 Carboxylate

SODIUM LAURETH-17 CARBOXYLATE

4.0

A gentle, high-foaming surfactant that effectively cleanses without stripping the skin, making it a great alternative to harsher sulfates.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Laureth-2 Phosphate

Sodium Laureth-2 Phosphate

3.8

A gentle surfactant that helps cleanse and emulsify without stripping the skin, making it a good choice for sensitive skin formulations.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Surfactant

Sodium Laureth-4 Carboxylate

SODIUM LAURETH-4 CARBOXYLATE

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Sodium Laureth-4 Phosphate

Sodium Laureth-4 Phosphate

3.8

A gentle cleansing agent that helps remove dirt and oil without stripping the skin, but may not suit ultra-sensitive types if used in high amounts.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Surfactant

Sodium Laureth-5 Carboxylate

Sodium Laureth-5 Carboxylate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Sodium Laureth-7 Sulfate

Sodium Laureth-7 Sulfate

4.0

A gentle, effective cleansing agent that creates a rich lather without stripping the skin as harshly as some other sulfates.

Irritation

low

Source

synthetic

beautyskincarecleansing
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Surfactant

Sodium Laureth-7 Tartrate

Sodium Laureth-7 Tartrate

4.0

A gentle, sulfate-free surfactant that cleanses without stripping the skin's natural moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Laureth-8 Carboxylate

SODIUM LAURETH-8 CARBOXYLATE

3.8

A gentle, ethoxylated surfactant that cleans effectively without stripping the skin, but its ethoxylation process raises minor environmental and purity concerns.

Irritation

low

Source

semi-synthetic

beautyskincarehaircaresurfactant
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Surfactant

Sodium Laureth-8 Sulfate

SODIUM LAURETH-8 SULFATE

3.5

A strong cleanser that can strip natural oils; best for oily skin or occasional deep cleansing.

Irritation

moderate

Source

synthetic

beautyskincarecleansing agent
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Surfactant

Sodium Lauriminodipropionate

Sodium Lauriminodipropionate

4.0

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

Irritation

low

Source

synthetic

beautyskincarecleanser
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Surfactant

Sodium Lauroamphoacetate

Sodium Lauroamphoacetate

4.5

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

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Lauroamphopropionate

Sodium Lauroamphopropionate

4.3

A gentle, low-irritation surfactant that effectively cleanses while being kinder to sensitive skin than traditional sulfates.

Irritation

low

Source

synthetic

beautyskincarecleansing
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Surfactant

Sodium Lauroyl Aspartate

Sodium Lauroyl Aspartate

4.3

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

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Lauroyl Collagen Amino Acids

Sodium Lauroyl Collagen Amino Acids

4.3

A mild, amino-acid-based cleanser that effectively removes dirt and oil without stripping the skin's natural moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Chelating Agent

Sodium Lauroyl Ethylenediamine Triacetate

Sodium Lauroyl Ethylenediamine Triacetate

4.0

A gentle chelating agent that helps preserve formula integrity and boost antioxidant performance without the irritation of stronger alternatives.

Irritation

low

Source

synthetic

beautyskincarechelating agent
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Surfactant

Sodium Lauroyl Glycinate

Sodium Lauroyl Glycinate

4.5

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

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Lauroyl Hydrolyzed Collagen

Sodium Lauroyl Hydrolyzed Collagen

4.0

A mild, collagen-derived surfactant that cleanses gently and may leave skin feeling soft, but offers no lasting anti-aging benefits.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Surfactant

Sodium Lauroyl Isethionate

Sodium Lauroyl Isethionate

4.5

A mild, coconut-derived cleanser that removes impurities without stripping the skin barrier, making it ideal for sensitive and dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Lauroyl Lactylate

Sodium Lauroyl Lactylate

4.5

A mild, skin-friendly surfactant that cleanses without stripping, making it ideal for sensitive or dry skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Lauroyl Oat Amino Acids

Sodium Lauroyl Oat Amino Acids

4.5

A mild, amino-acid-based surfactant that cleanses effectively while respecting the skin barrier—ideal for sensitive or dry skin.

Irritation

low

Source

natural

beautyskincarecleanser
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Surfactant

Sodium Lauroyl Silk Amino Acids

Sodium Lauroyl Silk Amino Acids

4.5

A mild, silk-derived surfactant that cleanses effectively while respecting the skin barrier, ideal for sensitive or dry skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Lauryl Aspartate

Sodium Lauryl Aspartate

4.0

A gentle, amino-acid-based cleanser that effectively removes dirt and oil while being kind to sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleanser
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Surfactant

Sodium Lauryl Phosphate

Sodium Lauryl Phosphate

3.8

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

Irritation

low

Source

synthetic

beautyskincaresurfactant
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