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

Emollient

Fusanus Spicatus Kernel Oil

FUSANUS SPICATUS KERNEL OIL

4.3

A gentle, non-greasy oil that hydrates and soothes skin, suitable for most skin types including sensitive and oily.

Irritation

low

Source

natural

beautyskincaremoisturizer
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Solvent

Fusel Oil

Fusel Oil

2.5

Fusel oil is a fermentation byproduct used as a solvent in cosmetics, but it can be irritating and is not a common or recommended ingredient for everyday skincare.

Irritation

moderate

Source

natural

beautyskincaresolvent
Read ingredient review

Surfactant

Fusel Wheat Glycosides

Fusel Wheat Bran/Straw Glycosides

4.0

A mild, biodegradable surfactant from fermented wheat that cleanses without stripping the skin.

Irritation

low

Source

natural

beautyskincarecleanser
Read ingredient review

Soothing Agent

Fusidium Coccineum Ferment Filtrate

Fusidium Coccineum Ferment Filtrate

3.8

A gentle, fermentation-derived ingredient that may help calm skin and fight environmental stress, but research is still early.

Irritation

low

Source

biotech

beautyskincaresoothing agent
Read ingredient review

Skin conditioning agent

GABOB

4-AMINO-3-HYDROXYBUTYRIC ACID

3.5

GABOB is a gentle amino acid derivative that may help calm skin and support the moisture barrier, but research in cosmetics is still limited.

Irritation

low

Source

natural

beautyskincareamino acid
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Antioxidant

Gac Fruit Seed Aril Powder

Momordica cochinchinensis seed aril powder

4.0

Gac fruit seed aril powder is a gentle antioxidant-rich ingredient that may help brighten skin and protect against environmental stress, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Emollient

Gac Seed Aril Oil

Momordica cochinchinensis seed aril oil

4.0

Gac seed aril oil is a lightweight, antioxidant-rich oil that may help protect skin from environmental stress while providing gentle moisture.

Irritation

low

Source

natural

beautyskincareemollient
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Exfoliant

Galactaric Acid

GALACTARIC ACID

4.2

A mild, sugar-derived exfoliant that smooths skin and boosts hydration with minimal irritation.

Irritation

low

Source

natural

beautyskincareexfoliant
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Humectant

Galactoarabinan

Galactoarabinan

4.0

A gentle, plant-derived humectant that helps hydrate and soothe the skin without clogging pores.

Irritation

low

Source

natural

beautyskincarehumectant
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Humectant

Galactomyces Ferment Filtrate

Galactomyces Ferment Filtrate

4.0

A gentle fermented yeast extract that helps improve skin texture and hydration, popular in Korean skincare.

Irritation

low

Source

biotech

beautyskincarehumectantconditioning agent
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Humectant

Galactose

GALACTOSE

3.8

Galactose is a gentle sugar humectant that helps hydrate skin and may support a healthy skin microbiome, but research on its cosmetic benefits is still emerging.

Irritation

low

Source

natural

beautyskincarehumectant
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Exfoliant

Galactose Dehydrogenase

GALACTOSE DEHYDROGENASE

3.8

A gentle enzyme exfoliant that works by breaking down surface sugars, offering mild brightening without harsh scrubbing.

Irritation

low

Source

biotech

beautyskincareexfoliant
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Humectant

Galactosyl Fructose

GALACTOSYL FRUCTOSE

4.0

A gentle prebiotic sugar that hydrates and feeds beneficial skin bacteria without irritation.

Irritation

low

Source

semi-synthetic

beautyskincarehumectantprebiotic
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Exfoliant

Galactosyl Salicylate

Galactosyl Salicylate

4.3

A milder cousin to salicylic acid that delivers exfoliation with less sting, making it ideal for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincareexfoliant
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Exfoliant

Galacturonic Acid

GALACTURONIC ACID

4.0

A gentle, hydrating exfoliant that smooths skin without the sting of stronger acids.

Irritation

low

Source

natural

beautyskincareexfolianthumectant
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Antioxidant

Galanga Leaf Extract

Alpinia Galanga Leaf Extract

4.0

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing Agent

Galanga Root Extract

KAEMPFERIA GALANGA ROOT EXTRACT

3.8

Galanga Root Extract is a gentle botanical with antioxidant and soothing potential, but research in topical skincare is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Soothing Agent

Galangal Root Water

Alpinia Officinarum Root Water

3.8

A gentle, antioxidant-rich water from galangal root that may help soothe skin and protect against environmental stress.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Antioxidant

Galangin

GALANGIN

3.8

Galangin is a plant-based antioxidant that may help protect skin from environmental stress, but human studies are limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing agent

Galaxaura Rugosa Extract

Galaxaura Rugosa Extract

3.5

A gentle red algae extract that may help calm irritation and provide antioxidant support, though research is still emerging.

Irritation

low

Source

natural

beautyskincaresoothing agent
Read ingredient review

Fragrance

Galbanum Gum

Ferula Galbaniflua Gum

3.8

Galbanum gum is a natural resin with a rich history in traditional medicine, but modern skincare evidence is limited to its soothing and aromatic potential.

Irritation

low

Source

natural

beautyskincarefragrance
Read ingredient review

Soothing agent

Galbanum Gum Extract

FERULA GALBANIFLUA GUM EXTRACT

3.8

Galbanum gum extract is a natural resin with mild soothing and antioxidant potential, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

beautyskincaresoothing agent
Read ingredient review

Fragrance

Galbanum Resin Oil

Ferula Galbaniflua Resin Oil

3.8

Galbanum Resin Oil adds a unique green, woody scent to products but has limited research on direct skin benefits and may cause irritation in sensitive individuals.

Irritation

moderate

Source

natural

beautyskincarefragrance
Read ingredient review

Antioxidant

Galenia Africana Extract

GALENIA AFRICANA LEAF/STEM EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Galla Rhois Gallnut Extract

Galla Rhois Gallnut Extract

3.8

A gentle plant extract with antioxidant and astringent benefits, best for oily or combination skin looking for light protection.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Gallic Acid

Gallic Acid

3.8

Gallic acid is a plant-derived antioxidant that helps protect skin from environmental damage and may support a more even skin tone, but it is less studied than more common antioxidants like vitamin C.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antimicrobial

Gallium Maltolate

Gallium Maltolate

2.5

Gallium maltolate is an experimental ingredient with promising antimicrobial and anti-inflammatory properties, but it is not yet widely used or proven safe in everyday skincare.

Irritation

moderate

Source

synthetic

beautyskincareantimicrobial
Read ingredient review

Anti-aging agent

Galloyl Hexapeptide-48

Galloyl Hexapeptide-48

3.8

A newer synthetic peptide that may help firm skin and soften lines, but long-term research is still limited.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-aging agent

Galloyl Nonapeptide-11

GALLOYL NONAPEPTIDE-11

4.0

A synthetic peptide that may help improve skin firmness and reduce fine lines, but more human studies are needed to confirm its effects.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Galloyl Pentapeptide-33

Galloyl Pentapeptide-33

3.8

A synthetic peptide that may help support skin firmness and reduce fine lines, but research is still emerging.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-aging agent

Galloyl SH-Pentapeptide-19

Galloyl SH-Pentapeptide-19

4.0

A synthetic peptide that may help improve skin firmness and reduce fine lines, but more human studies are needed to confirm its effectiveness.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging

Galloyl SH-Pentapeptide-5

Galloyl SH-Pentapeptide-5

4.0

A synthetic peptide that may help firm skin and soften fine lines, but research is still emerging and it works best as part of a broader anti-aging routine.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-aging agent

Galloyl Tetrapeptide-19

Galloyl Tetrapeptide-19

3.8

A lab-made peptide that may help firm skin and soften lines, but human studies are still limited.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-aging agent

Galloyl Tripeptide-35

GALLOYL TRIPEPTIDE-35

3.8

A lab-made peptide that may help firm skin and soften lines, but human studies are still limited.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Galloyl Tripeptide-47

Galloyl Tripeptide-47

4.0

A promising synthetic peptide that may help firm skin and soften wrinkles, but more independent human studies are needed to confirm its effects.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Galloyl Tripeptide-48

GALLOYL TRIPEPTIDE-48

4.0

A synthetic peptide that may help improve skin firmness and reduce fine lines, but more independent research is needed.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Galloyl Tripeptide-7

GALLOYL TRIPEPTIDE-7

4.0

A synthetic peptide that may help improve skin firmness and reduce fine lines, with good tolerability for most skin types.

Irritation

low

Source

synthetic

beautyskincareanti-aging
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Antioxidant

Gallyl Glucoside

Gallyl Glucoside

4.0

A gentle antioxidant that may help even skin tone and reduce dullness without irritation.

Irritation

low

Source

natural

beautyskincareantioxidant
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Exfoliant

Gamma-Caprolactone

GAMMA-CAPROLACTONE

3.8

A gentle, fruit-derived exfoliant that helps smooth skin texture without the sting of stronger acids.

Irritation

low

Source

natural

beautyskincareexfoliant
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Fragrance Ingredient

Gamma-Decalactone

GAMMA-DECALACTONE

4.0

Gamma-Decalactone is a safe, fruity fragrance ingredient used at low levels in cosmetics, but it offers no skincare benefits beyond scent.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Skin Conditioning

Gamma-Docosalactone

GAMMA-DOCOSALACTONE

3.8

Gamma-Docosalactone is a gentle synthetic emollient that helps soften and condition skin, but research on its long-term benefits is still limited.

Irritation

low

Source

synthetic

beautyskincareemollient
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Fragrance Ingredient

Gamma-Heptalactone

GAMMA-HEPTALACTONE

3.5

Gamma-Heptalactone is a synthetic scent ingredient that adds a sweet, creamy note to products, but it offers no skincare benefits and may cause sensitivity in some individuals.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Fragrance Ingredient

Gamma-Methylbenzenehexanenitrile

GAMMA-METHYLBENZENEHEXANENITRILE

3.5

A synthetic scent ingredient that adds a fresh floral note but has limited published safety data beyond basic skin irritation tests.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Fragrance Ingredient

Gamma-Methylcinnamyl Acetate

GAMMA-METHYLCINNAMYL ACETATE

3.5

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

Irritation

moderate

Source

synthetic

beautyskincarefragrance
Read ingredient review

Fragrance Ingredient

Gamma-Methyldecalactone

GAMMA-METHYLDECALACTONE

3.5

A synthetic fragrance ingredient that adds a creamy, peach-like scent to products, but offers no skincare benefits and may cause sensitivity in some individuals.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Fragrance Ingredient

Gamma-Nonalactone

GAMMA-NONALACTONE

3.5

Gamma-Nonalactone is a synthetic scent ingredient that adds a sweet, coconut-like aroma to products; it is generally safe at low concentrations but offers no skincare benefit.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Antioxidant

Gamma-Oryzanol

ORYZANOL

4.0

A gentle antioxidant from rice bran that helps calm skin and fight environmental damage without irritation.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Gamma-Terpinene

GAMMA-TERPINENE

3.8

Gamma-Terpinene is a plant-derived antioxidant that can help protect skin from environmental stress, but it may cause irritation in sensitive individuals at high concentrations.

Irritation

moderate

Source

natural

beautyskincareantioxidant
Read ingredient review

Fragrance Ingredient

Gamma-Undecalactone

GAMMA-UNDECALACTONE

3.5

A synthetic peach-scented fragrance ingredient that adds a pleasant aroma but offers no skincare benefits and may cause sensitivity in some individuals.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Fragrance Ingredient

Gamma-Undecenolactone

GAMMA-UNDECENOLACTONE

3.5

Gamma-Undecenolactone is a synthetic fragrance compound that adds a pleasant scent to products but offers no skincare benefits and may be a concern for those with fragrance sensitivities.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Exfoliant

Gamma-Valerolactone

GAMMA-VALEROLACTONE

3.8

Gamma-Valerolactone is a gentle, naturally derived exfoliant that may help smooth skin texture with less irritation than stronger acids.

Irritation

low

Source

natural

beautyskincareexfoliant
Read ingredient review

Antioxidant

Ganoderma Amboinense Extract

Ganoderma Amboinense Fruiting Body Extract

4.0

A gentle, antioxidant-rich mushroom extract that helps calm skin and defend against environmental stressors, but research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Ganoderma Atrum Extract

Ganoderma Atrum Extract

4.0

A mushroom extract that may help calm skin and fight environmental stress, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Ganoderma Japonicum Ferment

Ganoderma Japonicum Mycelium Ferment Extract Filtrate

4.0

A fermented mushroom extract that may help calm skin and fight free radicals, but research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Ganoderma Pfeifferi Extract

Ganoderma Pfeifferi Extract

4.0

A mushroom-derived antioxidant that may help calm skin and defend against environmental stress, though human studies are still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review