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

Antioxidant

Dyer's Broom Extract

GENISTA TINCTORIA FLOWER/LEAF/STEM EXTRACT

3.8

A gentle botanical extract with antioxidant and soothing potential, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Vasodilator

Dyphylline

DYPHYLLINE

2.5

Dyphylline is a synthetic compound related to caffeine that may temporarily tighten skin and improve microcirculation, but its cosmetic evidence is limited and it carries a higher irritation risk than gentler alternatives.

Irritation

moderate

Source

synthetic

beautyskincareactive
Read ingredient review

Antioxidant

Dysmorphococcus Globosus Extract

DYSMORPHOCOCCUS GLOBOSUS EXTRACT

3.5

A gentle microalgae extract with antioxidant potential, but research is still early and benefits are not yet proven in human studies.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Soothing agent

E. Coli Ferment Filtrate

Escherichia coli/glucose ferment filtrate

3.8

A biotech ferment that may help calm and condition skin, but research is still early and it's not a must-have ingredient.

Irritation

low

Source

biotech

beautyskincaresoothing agent
Read ingredient review

Conditioning agent

Earthworm Conditioned Soil

EARTHWORM CONDITIONED SOIL

3.0

Earthworm conditioned soil is a novel natural ingredient with potential skin-soothing and mineral-rich properties, but scientific evidence is limited.

Irritation

low

Source

natural

beautyskincareconditioning agent
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Fragrance Component

Eastern Red Cedar Wood Extract

Juniperus Virginiana Wood Extract

3.8

A fragrant wood extract with mild antioxidant potential, best suited for those who enjoy natural, woody scents and have no sensitivity to essential oils.

Irritation

moderate

Source

natural

beautyskincarebotanical extract
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Antioxidant

Ebony Bark Extract

DIOSPYROS EBENUM BARK EXTRACT

3.8

Ebony bark extract is a gentle antioxidant-rich botanical that may help protect skin from environmental stress, but research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing Agent

Echeveria Secunda Leaf Extract

Echeveria Secunda Leaf Extract

3.8

A gentle, plant-based extract that may help calm irritation and provide antioxidant protection, but research is still limited.

Irritation

low

Source

natural

beautyskincaresoothing agent
Read ingredient review

Antioxidant

Echinacea Callus Culture Extract

ECHINACEA PURPUREA CALLUS CULTURE EXTRACT

4.0

A lab-grown echinacea extract that offers antioxidant protection and soothing benefits without harvesting wild plants.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Echinacea Cell Culture Extract

ECHINACEA ANGUSTIFOLIA CELL CULTURE EXTRACT

4.0

A gentle, lab-grown antioxidant that may help calm skin and defend against environmental stress without the variability of whole-plant extracts.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Echinacea Extract

Echinacea Purpurea Flower/Leaf/Stem Extract

3.8

Echinacea extract offers antioxidant and soothing benefits, but its effectiveness in skincare is supported by limited direct human studies.

Irritation

low

Source

natural

beautyskincarebotanical
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Soothing Agent

Echinacea Flower Water

Echinacea Purpurea Flower/Leaf/Stem Water

3.8

A mild, plant-derived water that may help calm skin and provide antioxidant protection, but research on topical benefits is still limited.

Irritation

low

Source

natural

beautyskincaresoothing
Read ingredient review

Antioxidant

Echinacea Leaf Extract

ECHINACEA ANGUSTIFOLIA LEAF EXTRACT

3.8

A gentle botanical extract that may help calm skin and provide antioxidant protection, but its benefits are not as well-studied as some other plant extracts.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Echinacea Meristem Cell Culture

ECHINACEA ANGUSTIFOLIA MERISTEM CELL CULTURE

3.8

A gentle, lab-grown plant extract that may help calm skin and fight free radicals, but research is still early.

Irritation

low

Source

biotech

beautyskincareantioxidant
Read ingredient review

Antioxidant

Echinacea Purpurea Extract

ECHINACEA PURPUREA LEAF/ROOT EXTRACT

3.8

A gentle botanical extract that may help calm skin and provide antioxidant protection, but research on topical benefits is still emerging.

Irritation

low

Source

natural

beautyskincarebotanical
Read ingredient review

Antioxidant

Echinacea Purpurea Juice

ECHINACEA PURPUREA FLOWER/LEAF/STEM JUICE

3.8

A gentle, antioxidant-rich botanical juice that may help calm irritation and support skin barrier function, but more human studies are needed.

Irritation

low

Source

natural

beautyskincarebotanical
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Antioxidant

Echinacea Root Cell Culture Extract

ECHINACEA ANGUSTIFOLIA ROOT CELL CULTURE EXTRACT

4.0

A lab-grown Echinacea extract that offers antioxidant protection and soothing benefits without harvesting wild plants.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Soothing agent

Echinacin

Echinacea Purpurea Extract

3.8

Echinacin is a gentle plant extract that may help calm irritated skin and provide antioxidant protection, but research is limited compared to more studied ingredients.

Irritation

low

Source

natural

beautyskincaresoothing agent
Read ingredient review

Soothing Agent

Echinops Giganteus Root Extract

Echinops Giganteus Root Extract

3.8

A gentle botanical root extract with antioxidant potential, but research is limited and benefits are not yet well-established.

Irritation

low

Source

natural

beautyskincarebotanical extract
Read ingredient review

Emollient

Echinops Seed Oil

Echinops Sphaerocephalus Seed Oil

4.0

A gentle, plant-based oil that hydrates and softens skin without clogging pores, though research on its specific benefits is still limited.

Irritation

low

Source

natural

beautyskincareemollient
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Soothing Agent

Echium Lycopsis Root Extract

Echium Lycopsis Root Extract

3.8

A gentle root extract with potential soothing and antioxidant benefits, though research is limited and it's not a powerhouse ingredient.

Irritation

low

Source

natural

beautyskincarebotanical extract
Read ingredient review

Antioxidant

Ecklonia Kurome Extract

Ecklonia Kurome Extract

4.0

A brown seaweed extract that helps protect skin from environmental stress and may calm irritation.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Ecklonia Kurome Powder

Ecklonia Kurome Powder

3.8

A gentle seaweed powder that may help protect skin from environmental stress, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Ecklonia Laminaria Extract

Ecklonia Laminaria Extract

4.0

A gentle, antioxidant-rich seaweed extract that helps soothe and protect skin from environmental stress.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Ecklonia Maxima Powder

Ecklonia Maxima Powder

4.0

A nutrient-rich brown seaweed powder that helps protect skin from environmental stress and supports a healthy-looking complexion.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Ecklonia Radiata Extract

Ecklonia Radiata Extract

4.0

A gentle brown seaweed extract that helps calm irritation and defend against environmental stress, ideal for sensitive or reactive skin.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Eclipta Prostrata Extract

ECLIPTA PROSTRATA EXTRACT

3.8

Eclipta Prostrata Extract is a gentle botanical with antioxidant and soothing properties, but its benefits in skincare are supported mostly by traditional use and limited modern research.

Irritation

low

Source

natural

beautyskincarebotanical
Read ingredient review

Soothing Agent

Eclipta Prostrata Leaf Oil

ECLIPTA PROSTRATA LEAF OIL

3.8

Eclipta Prostrata Leaf Oil is a gentle, antioxidant-rich botanical oil that may help soothe the scalp and support healthy-looking hair, but more human studies are needed to confirm its benefits.

Irritation

low

Source

natural

beautyskincarehaircare
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Soothing Agent

Eclipta Prostrata Leaf Powder

ECLIPTA PROSTRATA LEAF POWDER

3.8

A gentle botanical powder with antioxidant and soothing potential, best known in traditional hair care but with limited modern clinical evidence.

Irritation

low

Source

natural

beautyskincarebotanical
Read ingredient review

Soothing Agent

Eclipta Prostrata Stem Extract

ECLIPTA PROSTRATA STEM EXTRACT

4.0

A gentle botanical extract with antioxidant and soothing potential, best known from Ayurvedic tradition and emerging research.

Irritation

low

Source

natural

beautyskincarebotanical
Read ingredient review

Emollient

Eclipta Prostrata Wax

ECLIPTA PROSTRATA WAX

3.8

A gentle plant wax that helps soften and protect skin, but scientific research on its specific benefits is still limited.

Irritation

low

Source

natural

beautyskincareemollient
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Humectant

Ectoin

Ectoin

4.5

Ectoin is a gentle, multi-tasking ingredient that hydrates, soothes, and shields the skin from environmental stress—great for sensitive or reactive skin.

Irritation

low

Source

natural

beautyskincarehumectantsoothing
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Antioxidant

Edelweiss Callus Lysate

LEONTOPODIUM ALPINUM CALLUS LYSATE

4.0

A gentle, antioxidant-rich ingredient from edelweiss plant cells that helps protect skin from environmental stress and supports a calmer complexion.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Edelweiss Callus Powder

Leontopodium Alpinum Callus Powder

4.0

A gentle antioxidant from edelweiss plant cells that helps protect skin from environmental stress and may support a more even tone.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Edelweiss Extract

Leontopodium Himalayanum/Jacotianum Flower/Leaf/Stem Extract

4.0

Edelweiss extract is a gentle, plant-based antioxidant that helps protect skin from environmental stress and may calm irritation.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Edelweiss Flower Extract

Leontopodium Alpinum Flower Extract

4.0

Edelweiss extract is a gentle, antioxidant-rich ingredient that helps defend skin against pollution and UV damage without irritation.

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing Agent

Edelweiss Flower Water

Leontopodium Alpinum Water

4.0

A gentle, antioxidant-rich botanical water that soothes and protects sensitive skin without irritation.

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing Agent

Edelweiss Flower/Leaf Water

Leontopodium Alpinum Flower/Leaf Water

4.0

Edelweiss water is a gentle, antioxidant-rich botanical that helps calm and protect sensitive skin without irritation.

Irritation

low

Source

natural

beautyskincarebotanical
Read ingredient review

Antioxidant

Edelweiss Leaf Cell Extract

Leontopodium Alpinum Leaf Cell Extract

4.3

A gentle, antioxidant-rich extract from edelweiss plant cells that helps defend skin against environmental damage and supports a more resilient complexion.

Irritation

low

Source

biotech

beautyskincareantioxidant
Read ingredient review

Antioxidant

Edelweiss Meristem Cell Culture

LEONTOPODIUM ALPINUM MERISTEM CELL CULTURE

4.0

A gentle, lab-grown antioxidant from edelweiss that helps protect skin from environmental stress without irritation.

Irritation

low

Source

biotech

beautyskincareantioxidant
Read ingredient review

Antioxidant

Edelweiss Root Extract

LEONTOPODIUM ALPINUM ROOT EXTRACT

4.0

Edelweiss root extract is a gentle antioxidant that helps defend skin against pollution and UV damage, but its benefits are best supported by lab studies rather than large human trials.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Chelating Agent

EDTA

EDTA

4.0

EDTA is a workhorse stabilizer that protects your skincare formulas from metal contamination, helping them stay effective longer.

Irritation

low

Source

synthetic

beautyskincarestabilizer
Read ingredient review

Chelating Agent

EDTA Salts

Disodium EDTA / Tetrasodium EDTA

4.0

EDTA salts are safe, widely used stabilizers that help your products stay effective by neutralizing trace metals in water and ingredients.

Irritation

low

Source

synthetic

beautyskincarechelating agent
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Humectant

Eel Skin Mucus Extract

Eel Skin Mucus Extract

3.8

Eel skin mucus extract is a novel humectant and film-forming ingredient that helps hydrate and temporarily smooth the skin, but research is still early and it may not be suitable for those with fish allergies.

Irritation

low

Source

natural

beautyskincarehumectantfilm-former
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Antioxidant

EGCG Safflowerate

Epigallocatechin Gallate Safflowerate

4.0

A stabilized form of green tea's star antioxidant, offering potent protection against environmental damage with improved skin penetration.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
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Antioxidant

EGCG-Biotin-Collagen Fibroblast Complex

Epigallocatechin Gallate, Biotin, Collagen, Mouse Fibroblast Conditioned Media

3.5

A multi-ingredient blend that combines antioxidant EGCG with biotin and collagen, plus mouse fibroblast conditioned media; promising but with limited human data and ethical considerations.

Irritation

low

Source

mixed

beautyskincareantioxidantpeptide
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Film-Former

Egg

EGG

3.5

Egg provides protein and moisture to skin and hair, but its texture and potential allergenicity make it a niche ingredient best suited for rinse-off treatments.

Irritation

low

Source

natural

beautyskincarefilm-former
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Conditioning Agent

Egg Extract

OVUM

3.5

Egg extract is a natural ingredient that can temporarily smooth and soften skin, but its benefits are mostly anecdotal and it may cause allergic reactions in some people.

Irritation

low

Source

natural

beautyskincareconditioning agent
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Emollient

Egg Oil

EGG OIL

3.8

Egg oil is a natural emollient rich in fatty acids and lecithin, offering moisturizing benefits but with moderate comedogenic potential for acne-prone skin.

Irritation

low

Source

natural

beautyskincareemollient
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Film Former

Egg Powder

OVUM POWDER

3.5

Egg powder can temporarily tighten and smooth skin, but it is not a long-term solution for firmness or hydration.

Irritation

low

Source

natural

beautyskincarefilm-former
Read ingredient review

Film-Forming

Egg Shell Membrane Extract

EGG SHELL MEMBRANE EXTRACT

4.0

A natural film-forming ingredient that helps smooth the skin's surface and lock in moisture, but research is still emerging.

Irritation

low

Source

natural

beautyskincarefilm-forming
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Film Former

Egg Shell Membrane Powder

EGG SHELL MEMBRANE POWDER

3.8

Egg shell membrane powder is a natural source of collagen and elastin that may help support skin firmness and hydration, but research is still emerging.

Irritation

low

Source

natural

beautyskincareconditioning agent
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Film-Former

Egg White

ALBUMEN

3.5

Egg white can temporarily tighten skin and absorb excess oil, but its effects are short-lived and it may not suit sensitive or dry skin.

Irritation

low

Source

natural

beautyskincarefilm-former
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Skin Conditioning Agent

Egg Yolk Extract

LUTEUM OVI EXTRACT

3.8

Egg Yolk Extract is a gentle, nutrient-packed ingredient that helps moisturize and condition skin, but it may not suit those with egg allergies.

Irritation

low

Source

natural

beautyskincareconditioning agent
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Skin conditioning agent

Egg Yolk Powder

LUTEUM OVI POWDER

3.8

Egg yolk powder is a natural moisturizer rich in lipids and proteins, but may be comedogenic for some skin types.

Irritation

low

Source

natural

beautyskincareconditioning agent
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