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 203
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

Viscosity Controlling

Acrylamide Crosspolymer Thickener

T-BUTYLACRYLAMIDE/DIMETHYLACRYLAMIDE/PEG-14 DIACRYLATE CROSSPOLYMER

4.0

A safe synthetic thickener that gives skincare products a smooth, non-greasy feel without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Thickener

Acrylamide/VP Copolymer Blend

SODIUM ACRYLOYLDIMETHYL TAURATE/ACRYLAMIDE/VP COPOLYMER

4.0

A safe, synthetic thickener that gives products a silky, non-greasy feel without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Thickener

Acrylate Copolymer Thickener

SODIUM ACRYLATE/SODIUM ACRYLOYLDIMETHYL TAURATE/ACRYLAMIDE COPOLYMER

4.0

A safe, effective thickener that gives skincare products a smooth, non-sticky feel without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Film Former

Acrylates Copolymer

SODIUM ACRYLATES/ETHYLHEXYL ACRYLATE COPOLYMER

3.8

A safe, synthetic polymer that helps products spread smoothly and stay put without feeling heavy.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Viscosity Controlling Agent

Acrylates Copolymer Thickener

Hydroxyethyl Acrylate/IPDI/PPG-15 Glyceryl Ether Copolymer

4.0

A safe, synthetic thickener and stabilizer that gives water-based products a silky, lightweight feel without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Film Former

Acrylates Crosspolymer Blend

ACRYLATES/LAURYL METHACRYLATE/TRIDECYL METHACRYLATE CROSSPOLYMER

4.0

A safe, synthetic ingredient that helps products feel smooth and spread evenly without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Viscosity Controlling Agent

Acrylates Crosspolymer-3

ACRYLATES CROSSPOLYMER-3

4.0

A safe, synthetic thickener that gives gels and creams a smooth, non-sticky feel without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Viscosity Controlling

Acrylates Crosspolymer-4

Acrylates Crosspolymer-4

4.0

A safe, synthetic thickener that improves product texture and stability without clogging pores or irritating skin.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Film Former

Acrylates Crosspolymer-9

AMP-Acrylates Polyacrylate Crosspolymer-9

4.0

A safe, synthetic thickener that gives skincare products a silky, non-sticky feel without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Film Former

Acrylates/VA Crosspolymer

ACRYLATES/VA CROSSPOLYMER

4.0

A safe, synthetic thickener and film-former that helps products spread smoothly and stay put, with very low irritation risk.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Viscosity Controlling

Acrylic Acid Crosspolymer

ACRYLIC ACID/ISOPROPYLACRYLAMIDE/MIBK ACRYLAMIDE CROSSPOLYMER

3.8

A synthetic thickener that improves product texture and stability with a low risk of irritation.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Thickener

Aluminum Hydroxide Oxide

ALUMINUM HYDROXIDE OXIDE

3.5

A safe, non-irritating mineral that improves product texture and opacity but offers no direct skin benefit.

Irritation

low

Source

natural

beautyskincaretexturizer
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Absorbent

Aluminum Silicate

ALUMINUM SILICATE

3.5

A safe, non-irritating mineral that helps control oil and improve product texture, but offers no active skincare benefits.

Irritation

low

Source

natural

beautyskincaretexturizer
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Texture enhancer

Boron Nitride

Boron Nitride

4.5

Boron nitride is a safe, non-irritating powder that gives makeup a silky, blurring finish without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Thickener

Calcium Myristate

Calcium Myristate

3.5

Calcium Myristate is a safe thickening agent that gives products a creamy feel, but it may be moderately pore-clogging for acne-prone skin.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Bulking Agent

Calcium Sulfate Hydrate

CALCIUM SULFATE HYDRATE

3.0

Calcium Sulfate Hydrate is a safe, mineral-based ingredient used to add texture, opacity, or absorbency in powder cosmetics, but it offers no active skincare benefits.

Irritation

low

Source

natural

beautyskincaretexturizer
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Thickener

Carbomer

Carbomer

4.0

A safe, widely used thickener that gives gels and creams their smooth texture without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Bulking Agent

Carbon Fiber

Carbon Fiber

2.5

Carbon fiber is a synthetic material used mainly for texture and bulk in cosmetics, with minimal direct skin benefit and very limited research on long-term safety in leave-on products.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Absorbent

Cassava Root Fiber

Manihot Utilissima Root Fiber

3.8

A gentle, plant-based fiber that helps absorb excess oil and adds texture to products without clogging pores.

Irritation

low

Source

natural

beautyskincaretexturizer
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Absorbent

Ceiba Pentandra Fiber Powder

Ceiba Pentandra Fiber Powder

3.5

A natural plant fiber that adds a silky feel and oil-absorbing power to powders and masks, but research on its cosmetic benefits is limited.

Irritation

low

Source

natural

beautyskincaretexturizer
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Thickener

Cellulose Gum

CELLULOSE GUM

4.2

A gentle, plant-derived thickener that gives products a smooth, non-sticky feel and helps keep formulas stable.

Irritation

low

Source

semi-synthetic

beautyskincaretexturizer
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Film Former

Cetyl Dimethicone Crosspolymer Blend

CETYL DIMETHICONE/BIS-VINYLDIMETHICONE CROSSPOLYMER

4.0

A safe silicone polymer that gives products a silky feel and helps ingredients spread evenly without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Skin conditioning agent

Cholesteryl Dichlorobenzoate

CHOLESTERYL DICHLOROBENZOATE

3.5

A synthetic cholesterol relative that helps creams feel smooth and stable, but research on its specific benefits is still limited.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Thickener

Corn Starch Acrylate Copolymer

CORN STARCH/ACRYLAMIDE/SODIUM ACRYLATE COPOLYMER

4.0

A gentle, effective thickener that gives products a silky, non-sticky feel while helping to stabilize emulsions.

Irritation

low

Source

semi-synthetic

beautyskincaretexturizer
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Absorbent

Cotton Powder

Gossypium Herbaceum Powder

3.5

Cotton powder is a gentle, plant-based ingredient that helps absorb oil and improve the feel of powders and masks, but it offers no active skincare benefits.

Irritation

low

Source

natural

beautyskincaretexturizer
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Binder

Croscarmellose

Croscarmellose

3.5

Croscarmellose is a safe, plant-derived binder that helps solid cosmetics hold together and break apart easily on contact with water.

Irritation

low

Source

semi-synthetic

beautyskincaretexturizer
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Texturizer

Cryolite Extract

Cryolite Extract

2.5

Cryolite Extract is a mineral ingredient with limited cosmetic research; its use is rare and may pose safety concerns due to aluminum and fluoride content.

Irritation

moderate

Source

natural

beautyskincaretexturizer
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Viscosity Controlling

Dextrin

Dextrin

4.0

Dextrin is a gentle, starch-derived ingredient that helps thicken formulas and improve product feel without common irritation.

Irritation

low

Source

natural

beautyskincaretexturizer
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Texture Enhancer

Dextrin Behenate

Dextrin Behenate

4.0

A gentle, starch-based ingredient that gives products a silky, non-greasy feel and helps stabilize formulas.

Irritation

low

Source

semi-synthetic

beautyskincaretexturizer
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