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

Geranium Thunbergii Extract

Geranium Thunbergii Flower/Leaf/Stem Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Fragrance

Geranyl Acetate

GERANYL ACETATE

3.5

Geranyl acetate is a natural floral fragrance ingredient that can cause skin sensitization in some individuals, especially at higher concentrations.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Fragrance Ingredient

Geranyl Acetoacetate

Geranyl Acetoacetate

3.5

Geranyl Acetoacetate is a synthetic fragrance ingredient that adds a pleasant scent to products but offers no skincare benefits on its own.

Irritation

low

Source

synthetic

beautyskincarefragrance
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Fragrance Ingredient

Geranyl Benzoate

Geranyl Benzoate

3.8

Geranyl Benzoate is a synthetic fragrance ingredient that adds a floral, rose-like scent to products; it is generally well-tolerated but may cause sensitivity in those with fragrance allergies.

Irritation

low

Source

synthetic

beautyskincarefragrance
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Fragrance Ingredient

Geranyl Butyrate

Geranyl Butyrate

3.8

Geranyl Butyrate adds a pleasant floral scent to products but can be a skin sensitizer for some people, especially those with fragrance allergies.

Irritation

moderate

Source

synthetic

beautyskincarefragrance
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Fragrance Ingredient

Geranyl Crotonate

Geranyl Crotonate

3.5

Geranyl Crotonate is a synthetic fragrance ingredient that adds a pleasant scent to products but offers no direct skincare benefits.

Irritation

low

Source

synthetic

beautyskincarefragrance
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Fragrance ingredient

Geranyl Ethyl Ether

GERANYL ETHYL ETHER

3.5

A synthetic scent ingredient that adds a pleasant floral note but offers no skincare benefits.

Irritation

low

Source

synthetic

beautyskincarefragrance
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Fragrance

Geranyl Formate

Geranyl Formate

3.5

Geranyl formate is a natural fragrance ester that adds a pleasant rose-like scent, but it can be a potential skin sensitizer for some individuals.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Fragrance

Geranyl Hexanoate

Geranyl Hexanoate

3.5

Geranyl Hexanoate is a synthetic floral fragrance ingredient that is generally well-tolerated but offers no direct skin benefit beyond scent.

Irritation

low

Source

synthetic

beautyskincarefragrance
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Fragrance

Geranyl Isobutyrate

GERANYL ISOBUTYRATE

3.5

Geranyl isobutyrate is a synthetic fragrance ingredient that adds a pleasant floral scent but may cause irritation in sensitive individuals.

Irritation

moderate

Source

synthetic

beautyskincarefragrance
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Fragrance Ingredient

Geranyl Isovalerate

Geranyl Isovalerate

3.8

A gentle floral-herbal fragrance ingredient that adds a pleasant scent to products but offers no direct skin benefit.

Irritation

low

Source

synthetic

beautyskincarefragrance
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Fragrance Ingredient

Geranyl Linalool

Geranyl Linalool

3.5

Geranyl Linalool is a natural fragrance compound that adds a pleasant floral-woody scent but may cause skin sensitivity in some people.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Emollient

Geranyl Nonanoate

Geranyl Nonanoate

4.0

A lightweight synthetic ester that softens skin without clogging pores, making it a good choice for oily or combination skin types.

Irritation

low

Source

synthetic

beautyskincareemollient
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Fragrance Ingredient

Geranyl Phenylacetate

Geranyl Phenylacetate

3.8

A floral-scented synthetic ester used to add a pleasant rose-honey note to products; generally safe at low concentrations but may cause sensitivity in some individuals.

Irritation

low

Source

synthetic

beautyskincarefragrance
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Fragrance Ingredient

Geranyl Propionate

GERANYL PROPIONATE

3.5

Geranyl propionate is a synthetic fragrance ester that adds a floral, rose-like scent to products; it is generally considered safe at low concentrations but may cause sensitivity in some individuals.

Irritation

low

Source

synthetic

beautyskincarefragrance
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Fragrance Ingredient

Geranyl Tiglate

GERANYL TIGLATE

3.5

Geranyl Tiglate is a natural fragrance ester that adds a pleasant floral-herbal scent, but it offers no direct skincare benefits and may cause sensitivity in those allergic to fragrance ingredients.

Irritation

low

Source

natural

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Antioxidant

Geranylgeraniol

Geranylgeraniol

3.8

Geranylgeraniol is a plant-derived antioxidant that may help calm skin and support collagen, but research in topical cosmetics is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Skin-conditioning agent

Geranylgeranylisopropanol

GERANYLGERANYLISOPROPANOL

3.8

A gentler alternative to retinol that targets collagen support, but research is still early and results may vary.

Irritation

low

Source

synthetic

beautyskincareanti-aging
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Fragrance Ingredient

Geranyloxyacetaldehyde

GERANYLOXYACETALDEHYDE

3.5

A synthetic fragrance ingredient that adds a fresh floral-green note but may cause skin irritation in sensitive individuals.

Irritation

moderate

Source

synthetic

beautyskincarefragrance
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Fragrance

Geranyloxycoumarin

4-METHYL-7-GERANYLOXYCOUMARIN

3.5

A synthetic fragrance ingredient that adds a pleasant scent but may cause skin irritation in sensitive individuals.

Irritation

moderate

Source

synthetic

beautyskincarefragrance
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Antioxidant

Gerberi Sea Lavender Extract

LIMONIUM GERBERI EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Germanium Dioxide

GERMANIUM DIOXIDE

2.5

Germanium dioxide is an obscure mineral ingredient with limited evidence for skin benefits and notable safety concerns from oral exposure, making it a questionable choice in modern skincare.

Irritation

moderate

Source

natural

beautyskincareantioxidant
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Antioxidant

Germinated Ginseng Seed Extract

GERMINATED PANAX GINSENG SEED EXTRACT

4.0

A gentle, antioxidant-rich extract from germinated ginseng seeds that may help calm and protect skin, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Germinated Soybean Extract

GERMINATED GLYCINE MAX SEED EXTRACT

4.0

A gentle, plant-derived antioxidant that may help brighten and protect skin, but more human studies are needed to confirm its effects.

Irritation

low

Source

natural

beautyskincareantioxidant
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Thickener

Ghatti Gum

ANOGENUS LATIFOLIA GUM

3.8

Ghatti gum is a natural thickener that improves product texture and stability, but it's not a star active ingredient for skin benefits.

Irritation

low

Source

natural

beautyskincarethickener
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Antioxidant

Giant Dogwood Extract

Cornus Controversa Extract

3.8

A gentle, antioxidant-rich plant extract that may help protect skin from environmental stress, though research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Giant Dogwood Leaf Extract

CORNUS CONTROVERSA LEAF EXTRACT

3.8

A gentle, antioxidant-rich plant extract that may help protect skin from environmental stress, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Giant Dogwood Wood Extract

CORNUS CONTROVERSA WOOD EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Giant Granadilla Extract

Passiflora Quadrangularis Hull Extract

4.0

A gentle, antioxidant-rich plant extract that may help calm and protect skin, though research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Giant Granadilla Flower Extract

PASSIFLORA QUADRANGULARIS FLOWER EXTRACT

4.0

A gentle, antioxidant-rich flower extract that helps soothe and protect skin from environmental stress, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Giant Granadilla Fruit Extract

Passiflora quadrangularis fruit extract

4.0

A gentle, antioxidant-rich fruit extract that helps protect skin from environmental stress while providing light hydration.

Irritation

low

Source

natural

beautyskincareantioxidant
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Humectant

Giant Granadilla Fruit Juice

PASSIFLORA QUADRANGULARIS FRUIT JUICE

4.0

A gentle, water-soluble fruit juice that provides light hydration and antioxidant protection, ideal for normal to dry skin types.

Irritation

low

Source

natural

beautyskincarehumectant
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Antioxidant

Giant Ragweed Leaf Extract

Ambrosia Trifida Leaf Extract

3.5

A plant extract with potential antioxidant benefits, but limited research and a notable risk of allergic reaction for those sensitive to ragweed.

Irritation

moderate

Source

natural

beautyskincareantioxidant
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Soothing agent

Giant Reed Ferment Filtrate

Lactobacillus/Arundinaria Gigantea Ferment Filtrate

3.8

A fermented plant extract that may offer gentle soothing and conditioning, but research is limited.

Irritation

low

Source

biotech

beautyskincaresoothing agent
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Antioxidant

Giant Reed Leaf Ferment Filtrate

Lactobacillus/Arundinaria Gigantea Leaf Ferment Filtrate

3.8

A gentle, fermented botanical extract with antioxidant potential, but human studies are limited.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Soothing Agent

Giant Reed Stem Extract

Arundo Donax Stem Extract

3.8

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

Irritation

low

Source

natural

beautyskincaresoothing agent
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Antioxidant

Giant Sequoia Bud Extract

SEQUOIADENDRON GIGANTEUM BUD EXTRACT

3.8

A gentle, antioxidant-rich extract from giant sequoia buds that may help calm skin and fight free radical damage, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Giant Sequoia Callus Extract

SEQUOIADENDRON GIGANTEUM CALLUS CULTURE EXTRACT

3.8

A plant cell culture extract that may help protect skin from environmental stress, but research is still early.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Giant Sequoia Stem Extract

SEQUOIADENDRON GIGANTEUM STEM EXTRACT

3.8

A gentle, plant-based antioxidant that may help protect skin from environmental stress, though research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Giant Water Lily Flower Extract

NYMPHAEA GIGANTEA FLOWER EXTRACT

4.0

A gentle, antioxidant-rich extract from the giant water lily that helps calm and protect the skin, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Anti-aging agent

Gibberellic Acid

Gibberellic Acid

3.5

Gibberellic acid is a plant-derived ingredient that may help boost collagen and elastin, but research is still early and it's not a proven anti-aging powerhouse.

Irritation

low

Source

natural

beautyskincareanti-aging
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Antioxidant

Gileadensis Branch/Fruit/Leaf Extract

COMMIPHORA GILEADENSIS BRANCH/FRUIT/LEAF EXTRACT

3.8

A gentle, plant-based extract with antioxidant and soothing potential, but research is limited compared to more studied botanicals.

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing Agent

Gileadensis Bud Extract

COMMIPHORA GILEADENSIS BUD EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Gileadensis Flower Extract

COMMIPHORA GILEADENSIS FLOWER EXTRACT

3.8

A gentle, plant-derived antioxidant extract that may help calm skin and fight free radical damage, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing Agent

Gileadensis Myrrh Oil

COMMIPHORA GILEADENSIS OIL

3.8

A fragrant, soothing oil from the myrrh family that may calm skin but can be irritating for sensitive types.

Irritation

moderate

Source

natural

beautyskincaresoothing agent
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Soothing Agent

Gileadensis Sap Extract

COMMIPHORA GILEADENSIS SAP EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincaresoothing agent
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Antioxidant

Ginger Leaf Cell Extract

Zingiber Officinale Leaf Cell Extract

3.8

A gentle, lab-grown ginger leaf extract that may help calm skin and fight free radical damage, but research is still early.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Ginger Root Juice

ZINGIBER OFFICINALE ROOT JUICE

4.0

Ginger root juice is a gentle, antioxidant-rich ingredient that can help calm skin and protect against environmental stress, but it is not a cure-all and may cause mild irritation in very sensitive individuals.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Ginger Root Oil

Zingiber Officinale Root Oil

4.0

Ginger Root Oil offers antioxidant and soothing benefits but can be irritating for sensitive skin when used at high concentrations.

Irritation

moderate

Source

natural

beautyskincareantioxidant
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Antioxidant

Ginger Root Powder

Zingiber Officinale Root Powder

4.0

Ginger root powder is a gentle, antioxidant-rich ingredient that can help soothe skin and provide a mild exfoliating texture in masks and scrubs.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Ginkgo Biloba & Flaxseed Extract

Ginkgo Biloba Leaf/Linum Usitatissimum Seed Extract

3.8

A gentle botanical duo that may help protect skin from environmental stress and calm minor irritation, though research is limited for topical use.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Ginkgo Biloba Callus Culture Extract

Ginkgo Biloba Callus Culture Extract

4.0

A gentle, lab-grown antioxidant extract that may help protect skin from environmental stress without the variability of whole-plant extracts.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Ginkgo Biloba Leaf Extract

Ginkgo Biloba Leaf Extract

4.0

A gentle antioxidant extract that helps protect skin from environmental stress and may support a more even-looking complexion.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Ginkgo Biloba Leaf Powder

Ginkgo Biloba Leaf Powder

4.0

Ginkgo biloba leaf powder is a gentle antioxidant-rich ingredient that may help calm skin and defend against environmental stress.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Ginkgo Biloba Leaf Water

Ginkgo Biloba Leaf Water

4.0

Ginkgo Biloba Leaf Water is a mild, antioxidant-rich hydrator that may help calm skin and protect against environmental stress, but it is not a cure-all.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Ginkgo Biloba Meristem Cell Extract

Ginkgo Biloba Meristem Cell Extract

4.0

A gentle, antioxidant-rich plant extract that may help protect skin from environmental stress, though human studies are limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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