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

Film Former

Dimer Rosin

Dimer Rosin

3.5

Dimer Rosin is a modified tree resin that helps makeup and hair products stay put, but it may feel sticky or heavy on some skin types.

Irritation

low

Source

natural

beautyskincarefilm-former
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Anti-aging agent

Dimer Tripeptide-43

Dimer Tripeptide-43

3.8

A lab-made peptide that may help support collagen and improve skin firmness, but human studies are limited.

Irritation

low

Source

synthetic

beautyskincarepeptide
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Occlusive

Dimethicone

Dimethicone

4.2

A well-studied silicone that provides a silky feel and temporary barrier without clogging pores for most people.

Irritation

low

Source

synthetic

beautyskincareocclusive
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Film Former

Dimethicone Crosspolymer

Dimethicone Crosspolymer

4.3

A gentle silicone that gives a smooth, matte finish without clogging pores — great for oily or combination skin.

Irritation

low

Source

synthetic

beautyskincaresilicone
Read ingredient review

Film Former

Dimethicone Crosspolymer Blend

DIMETHICONE/VINYLTRIMETHYLSILOXYSILICATE CROSSPOLYMER

4.0

A gentle silicone powder that gives a silky finish and helps makeup stay put without clogging pores.

Irritation

low

Source

synthetic

beautyskincarefilm-former
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Film Former

Dimethicone Crosspolymer-3

Dimethicone Crosspolymer-3

4.0

A gentle silicone powder that gives a silky, matte finish and helps control shine without clogging pores.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Film Former

Dimethicone Methacrylate

Dimethicone Methacrylate

3.5

A silicone polymer that helps products feel silky and last longer, but it's purely synthetic and not a treatment ingredient.

Irritation

low

Source

synthetic

beautyskincarefilm former
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Hair Conditioner

Dimethicone PEG-15 Acetate

DIMETHICONE PEG-15 ACETATE

3.8

A gentle silicone derivative that smooths hair and skin without heavy buildup, but may not suit those avoiding all silicones or PEG compounds.

Irritation

low

Source

semi-synthetic

beautyskincarehaircare
Read ingredient review

Emulsifier

Dimethicone PEG-3 Laurate

DIMETHICONE PEG-3 LAURATE

3.8

A gentle silicone emulsifier that improves texture and stability, but may not suit those avoiding silicones or ethoxylated ingredients.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emollient

Dimethicone PEG-7 Avocadoate

DIMETHICONE PEG-7 AVOCADOATE

4.0

A gentle silicone emollient that combines the smoothing power of dimethicone with the nourishing properties of avocado oil, making it a good choice for dry or sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emulsifier

Dimethicone PEG-7 Cocoate

DIMETHICONE PEG-7 COCOATE

4.0

A gentle silicone-coconut hybrid that helps mix oil and water, leaving skin and hair feeling soft without heavy residue.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Emollient

Dimethicone PEG-7 Lactate

Dimethicone PEG-7 Lactate

4.0

A gentle silicone derivative that improves product feel and skin softness, generally well-tolerated by most skin types.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emulsifier

Dimethicone PEG-7 Olivate

DIMETHICONE PEG-7 OLIVATE

4.0

A gentle silicone emulsifier that helps create smooth, stable formulas while adding a light, non-greasy feel.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Dimethicone PEG-7 Phosphate

DIMETHICONE PEG-7 PHOSPHATE

4.0

A gentle silicone emulsifier that helps mix water and oil, making formulas feel smooth without heavy residue.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Dimethicone PEG-7 Phthalate

Dimethicone PEG-7 Phthalate

3.5

A silicone-based emulsifier that helps formulas feel smooth and spread easily, but its phthalate component raises unnecessary concern despite being chemically different from controversial phthalates.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Surfactant

Dimethicone PEG-7 Sulfate

Dimethicone PEG-7 Sulfate

3.8

A gentle silicone-based cleanser that helps remove dirt and oil while leaving hair and skin feeling soft, but may not suit those avoiding silicones.

Irritation

low

Source

semi-synthetic

beautyskincarehaircaresurfactant
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Emulsifier

Dimethicone PEG-7 Undecylenate

DIMETHICONE PEG-7 UNDECYLENATE

4.0

A gentle silicone emulsifier that helps products spread smoothly and feel silky, with very low irritation potential.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emollient

Dimethicone PEG-8 Adipate

DIMETHICONE PEG-8 ADIPATE

4.0

A gentle silicone emollient that helps products glide on smoothly and leaves skin feeling soft without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Dimethicone PEG-8 Avocadoate

DIMETHICONE PEG-8 AVOCADOATE

4.0

A hybrid silicone-and-avocado emollient that smooths skin and improves product feel without heavy greasiness.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Dimethicone PEG-8 Beeswax

Dimethicone PEG-8 Beeswax

3.8

A silicone-wax hybrid that gives products a smooth, silky feel and helps them stay put, but may feel heavy on oily skin.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Dimethicone PEG-8 Benzoate

Dimethicone PEG-8 Benzoate

4.0

A gentle silicone derivative that improves product texture and feel without clogging pores or causing irritation.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Dimethicone PEG-8 Borageate

DIMETHICONE PEG-8 BORAGEATE

4.0

A gentle silicone emollient that adds a silky feel and light hydration, generally safe for most skin types.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Dimethicone PEG-8 Lanolate

DIMETHICONE PEG-8 LANOLATE

3.8

A gentle silicone-lanolin hybrid that helps products spread smoothly and feel silky, but may not suit those avoiding silicones or lanolin derivatives.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emulsifier

Dimethicone PEG-8 Laurate

Dimethicone PEG-8 Laurate

3.5

A silicone emulsifier that helps mix oil and water, but may not suit everyone due to its synthetic nature and potential for buildup.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

Dimethicone PEG-8 Olivate

DIMETHICONE PEG-8 OLIVATE

4.0

A gentle silicone emulsifier that helps create smooth, stable formulas without heavy residue.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

Dimethicone PEG-8 Phosphate

DIMETHICONE PEG-8 PHOSPHATE

4.0

A gentle silicone emulsifier that helps create stable, lightweight formulas without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
Read ingredient review

Film Former

Dimethicone PEG-8 Phthalate

Dimethicone PEG-8 Phthalate

3.0

A silicone derivative that helps products spread smoothly and form a film, but its phthalate component raises some safety questions.

Irritation

low

Source

synthetic

beautyskincarehaircare
Read ingredient review

Film Former

Dimethicone PEG-8 Polyacrylate

Dimethicone PEG-8 Polyacrylate

3.8

A gentle silicone film-former that helps products feel silky and stay put, but may not suit those avoiding silicones.

Irritation

low

Source

synthetic

beautyskincarefilm-former
Read ingredient review

Emulsifier

Dimethicone PEG/PPG-7/4 Phosphate

DIMETHICONE PEG/PPG-7/4 PHOSPHATE

4.0

A gentle silicone emulsifier that helps mix water and oil in products, but may not suit those avoiding silicones or PEG compounds.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Hair Conditioning Agent

Dimethicone PG-Diethylmonium Chloride

Dimethicone PG-Diethylmonium Chloride

3.8

A silicone-based conditioning ingredient that smooths hair and reduces static, but may build up on fine or low-porosity hair over time.

Irritation

low

Source

synthetic

beautyhaircareconditioning agent
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Conditioning Agent

Dimethicone Propyl PG-Betaine

Dimethicone Propyl PG-Betaine

4.0

A gentle silicone derivative that conditions hair and skin without the heavy feel of traditional silicones.

Irritation

low

Source

synthetic

beautyskincarehaircareconditioning agent
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Film Former

Dimethicone Silylate

Dimethicone Silylate

4.0

A gentle silicone that gives a silky, smooth feel to products without clogging pores or causing irritation.

Irritation

low

Source

synthetic

beautyskincaresilicone
Read ingredient review

Film Former

Dimethicone/PEG-10 Crosspolymer

DIMETHICONE/PEG-10 CROSSPOLYMER

4.0

A gentle silicone polymer that creates a smooth, breathable film on skin, improving product feel and wear without clogging pores.

Irritation

low

Source

synthetic

beautyskincarefilm former
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Film Former

Dimethicone/PPG-20 Crosspolymer

DIMETHICONE/PPG-20 CROSSPOLYMER

4.0

A silicone polymer that creates a smooth, breathable film on skin, improving product feel and longevity without clogging pores.

Irritation

low

Source

synthetic

beautyskincarefilm-former
Read ingredient review