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 473
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

Exfoliant

Ethyl Laevulinate

Ethyl Laevulinate

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareexfoliant
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Exfoliant

Ethyl Salicylate

Ethyl Salicylate

3.5

Ethyl Salicylate is a milder cousin of salicylic acid, offering gentle exfoliation with a lower irritation risk, but it is less studied and often used more for fragrance than efficacy.

Irritation

moderate

Source

synthetic

beautyskincareexfoliant
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Exfoliant

Eucalyptus Leaf Powder

EUCALYPTUS GLOBULUS LEAF POWDER

3.5

A natural exfoliant with a strong herbal scent, but may irritate sensitive skin due to its essential oil content.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Exfoliant

Fermented Adzuki Bean Extract

LACTOBACILLUS/PHASEOLUS ANGULARIS SEED EXTRACT FERMENT EXTRACT FILTRATE

3.8

A gentle fermented bean extract that may help soften and brighten skin without harsh chemicals.

Irritation

low

Source

biotech

beautyskincareexfoliantantioxidant
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Humectant

Fermented Apple Sucrose Complex

Saccharomyces/Apple/Sucrose Ferment Filtrate

4.0

A gentle, fermented ingredient that may help hydrate and lightly exfoliate the skin, but research is mostly based on the broader benefits of ferments rather than this specific blend.

Irritation

low

Source

biotech

beautyskincarehumectantexfoliant
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Exfoliant

Fermented Bamboo & Berry Complex

Hydrolyzed Phyllostachys Heterocycla/Charcoal/Papain/Boysenberry Fruit Ferment Filtrate

3.8

A gentle, multi-tasking ferment that combines enzymatic exfoliation with charcoal's clarifying power, but its complex blend makes it hard to predict individual skin reactions.

Irritation

low

Source

mixed

beautyskincareexfoliant
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Exfoliant

Fermented Citrus & Rice Complex

ACETOBACTER/LACTOBACILLUS/(CITRUS JUNOS/PRUNUS MUME/PUNICA GRANATUM) FRUIT/RICE FERMENT FILTRATE

4.0

A gentle fermented blend that supports skin texture and glow through natural acids and antioxidants.

Irritation

low

Source

biotech

beautyskincareexfoliantantioxidant
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Exfoliant

Fermented Fruit & Seed Complex

SACCHAROMYCES/APPLE FRUIT/APRICOT KERNEL/PEACH KERNEL/COIX LACRYMA-JOBI MA-YUEN SEED/SUCROSE FERMENT FILTRATE

4.0

A gentle, fermented blend that helps soften and smooth skin while providing light hydration and antioxidant benefits.

Irritation

low

Source

biotech

beautyskincareexfolianthumectant
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Exfoliant

Fermented Fruit Wine Complex

ACETOBACTER/SACCHAROMYCES/RASPBERRY FRUIT EXTRACT/PUNICA GRANATUM FRUIT EXTRACT/WINE FERMENT FILTRATE

4.0

A gentle fermented fruit complex that offers mild exfoliation and antioxidant benefits, ideal for dull or uneven skin.

Irritation

low

Source

biotech

beautyskincareexfoliantantioxidant
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Exfoliant

Fermented Grain Seed Extract

LACTOBACILLUS/OAT/RYE/WHEAT SEED EXTRACT FERMENT

4.0

A gentle probiotic ferment that may help smooth texture and support a healthy skin barrier, but research is still emerging.

Irritation

low

Source

biotech

beautyskincareexfoliantsoothing
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Humectant

Fermented Job's Tears Seed Filtrate

Saccharomyces/Coix Lacryma-Jobi Ma-Yuen Seed Ferment Filtrate

4.0

A gentle fermented ingredient that hydrates and lightly exfoliates, suitable for most skin types.

Irritation

low

Source

biotech

beautyskincarehumectantexfoliant
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Antioxidant

Fermented Lingonberry Extract

SACCHAROMYCES/VACCINIUM VITIS-IDAEA FRUIT FERMENT EXTRACT

4.0

A gentle, antioxidant-rich fermented fruit extract that may help brighten and smooth skin without harsh irritation.

Irritation

low

Source

biotech

beautyskincareantioxidantexfoliant
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Exfoliant

Fermented Nut & Seed Complex

Aspergillus/Walnut Seed/Peach Seed/Apricot Seed/Prunus Mume Seed Ferment Filtrate

4.0

A gentle fermented seed complex that helps soften and smooth skin without harsh scrubbing, but research is still emerging.

Irritation

low

Source

biotech

beautyskincareexfoliantconditioning agent
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Exfoliant

Fermented Papaya Enzyme Complex

ENTEROCOCCUS FAECALIS/AMYLASE/GLUCOSE/PAPAYA FRUIT/PROTEASE FERMENT FILTRATE

4.0

A gentle, probiotic-fermented enzyme complex that helps soften and brighten skin without harsh scrubbing.

Irritation

low

Source

biotech

beautyskincareexfoliant
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Exfoliant

Fermented Pineapple Complex

Saccharomyces/Pineapple Fruit/Sucrose Ferment Filtrate

4.0

A gentle fermented ingredient that lightly exfoliates and hydrates, ideal for dull or uneven skin.

Irritation

low

Source

biotech

beautyskincareexfolianthumectant
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Antioxidant

Fermented Rice & Green Tea Complex

LACTOBACILLUS/RICE/CAMELLIA SINENSIS LEAF/TARAXACUM PLATYCARPUM FERMENT EXTRACT

4.0

A gentle fermented blend that supports skin radiance and barrier health without harsh irritation.

Irritation

low

Source

biotech

beautyskincareantioxidantexfoliant
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Exfoliant

Fermented Rice & Soy Milk Filtrate

ASPERGILLUS/RICE/SOYMILK FERMENT FILTRATE

4.0

A gentle fermented ingredient that helps soften and smooth skin without harsh scrubbing, ideal for those who want mild exfoliation.

Irritation

low

Source

biotech

beautyskincareexfoliantconditioning agent
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Humectant

Fermented Rice Lees Complex

Aspergillus/Saccharomyces/Rice Lees Ferment Filtrate

4.0

A gentle, fermented ingredient that may help hydrate, lightly exfoliate, and support a healthy-looking skin barrier.

Irritation

low

Source

biotech

beautyskincarehumectantexfoliant
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Exfoliant

Fermented Rice Lees Powder

Aspergillus/Alcohol/Rice Lees Ferment Powder

4.0

A gentle, fermented exfoliant that helps smooth skin without harsh scrubbing, ideal for sensitive types.

Irritation

low

Source

biotech

beautyskincareexfoliant
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Exfoliant

Fermented Soybean Milk Complex

LACTOBACILLUS/MILK SOLIDS/SOYBEAN OIL FERMENT

4.0

A gentle fermented ingredient that lightly exfoliates and nourishes skin, suitable for most skin types including sensitive skin.

Irritation

low

Source

biotech

beautyskincareexfoliantconditioning agent
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Exfoliant

Fermented Sugar Cane Extract

Lactobacillus/Sugar Cane Extract Ferment Filtrate

4.0

A gentle fermented extract that helps exfoliate and brighten skin without harsh chemicals.

Irritation

low

Source

biotech

beautyskincareexfoliant
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Antioxidant

Fermented Tea & Sugar Cane Extract

LACTOBACILLUS/SUGAR CANE/CAMELLIA SINENSIS LEAF FERMENT FILTRATE EXTRACT

4.0

A gentle fermented ingredient that combines antioxidant benefits from green tea with mild exfoliation from fermentation byproducts.

Irritation

low

Source

biotech

beautyskincareantioxidantexfoliant
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Exfoliant

Fermented Walnut & Soybean Complex

BACILLUS/MONASCUS/WALNUT SHELL/SOYBEAN FERMENT FILTRATE

4.0

A gentle fermented ingredient that may help smooth skin texture and support hydration, but research is still emerging.

Irritation

low

Source

biotech

beautyskincareexfolianthumectant
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Exfoliant

Fermented Willow Bark & Probiotic Complex

ENTEROCOCCUS FAECIUM/LACTOBACILLUS/SALIX PURPUREA BARK/LEAF/STEM/WOOD/ASCORBIC ACID/GLUCONOLACTONE FERMENT EXTRACT FILTRATE

4.0

A gentle, fermented blend that combines willow bark's natural exfoliating power with probiotic and antioxidant benefits for smoother, calmer skin.

Irritation

low

Source

biotech

beautyskincareexfoliantantioxidant
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Exfoliant

Fermented Yuzu Extract

Citrus Hystrix Fruit/Sucrose Ferment Filtrate

4.0

A gentle fermented fruit extract that offers mild exfoliation and antioxidant protection, suitable for most skin types.

Irritation

low

Source

biotech

beautyskincareexfoliantantioxidant
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Exfoliant

Ficin

FICIN

3.8

Ficin is a plant-derived enzyme that gently exfoliates skin by dissolving dead cells, but it can be irritating if left on too long or used too frequently.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Exfoliant

Fig & Soy Ferment Filtrate

Bacillus/Fig Fruit/Soybean Ferment Filtrate

4.0

A gentle, fermented ingredient that helps smooth skin texture and support a healthy-looking complexion without harsh scrubbing.

Irritation

low

Source

biotech

beautyskincareexfoliant
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Exfoliant

Fig Fruit Powder

Ficus Carica Fruit Powder

3.8

A gentle, natural exfoliating powder with antioxidant benefits, but research on its cosmetic efficacy is still limited.

Irritation

low

Source

natural

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Exfoliant

Fig Seed

Ficus Carica Seed

3.8

Fig Seed offers gentle physical exfoliation from a natural source, but research on its specific benefits is limited compared to more studied exfoliants.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Flaxseed Flour

Linum Usitatissimum Seed Flour

4.0

Flaxseed flour offers gentle physical exfoliation and oil absorption, making it a good natural option for sensitive or oily skin types.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Fumaric Acid

FUMARIC ACID

3.8

Fumaric acid is a gentle alpha hydroxy acid (AHA) that exfoliates and brightens skin, but it can cause irritation at higher concentrations.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Exfoliant

Furoic Acid

Furoic Acid

3.5

Furoic acid is a gentle exfoliating acid with antioxidant potential, but research on its efficacy and safety in cosmetics is still limited.

Irritation

moderate

Source

natural

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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

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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

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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

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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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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

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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

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Exfoliant

Glass Beads

GLASS BEADS

3.5

Glass beads provide gentle physical exfoliation but raise environmental concerns due to their non-biodegradable nature.

Irritation

low

Source

synthetic

beautyskincareexfoliant
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Exfoliant

Glucaric Acid

Glucaric Acid

4.0

Glucaric acid is a gentle, multi-tasking PHA that exfoliates, hydrates, and supports skin barrier health with minimal irritation.

Irritation

low

Source

natural

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Exfoliant

Glucoheptonic Acid

Glucoheptonic Acid

4.0

A gentle PHA exfoliant that smooths skin and boosts hydration with minimal irritation.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Glucoheptonolactone

GLUCOHEPTONOLACTONE

4.0

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

Irritation

low

Source

semi-synthetic

beautyskincareexfolianthumectant
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Exfoliant

Gluconic Acid

Gluconic Acid

4.2

Gluconic acid is a mild exfoliating PHA that gently smooths skin texture and boosts hydration without the sting of stronger acids.

Irritation

low

Source

natural

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Exfoliant

Gluconolactone

Gluconolactone

4.3

A gentle exfoliating acid that smooths skin and boosts hydration without the sting of stronger AHAs.

Irritation

low

Source

natural

beautyskincareexfolianthumectant
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Humectant

Glucosamine

GLUCOSAMINE

4.0

Glucosamine is a gentle, non-acid exfoliant that helps smooth skin texture and support a more even tone, with low irritation potential.

Irritation

low

Source

natural

beautyskincarehumectantexfoliant
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Exfoliant

Glucosamine Salicylate

Glucosamine Salicylate

3.8

A gentle exfoliating ingredient that combines salicylic acid with glucosamine for milder action, ideal for sensitive or acne-prone skin.

Irritation

low

Source

semi-synthetic

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Humectant

Glucuronic Acid

Glucuronic Acid

4.0

A gentle, hydrating acid that lightly exfoliates and supports the skin's natural moisture barrier.

Irritation

low

Source

natural

beautyskincarehumectantexfoliant
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Exfoliant

Glucuronolactone

GLUCURONOLACTONE

4.2

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

Irritation

low

Source

semi-synthetic

beautyskincareexfoliant
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Humectant

Glycereth-7 Glycolate

GLYCERETH-7 GLYCOLATE

4.0

A gentle humectant with mild exfoliating properties, suitable for most skin types including sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincarehumectantexfoliant
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Exfoliant

Glycol Salicylate

Glycol Salicylate

4.0

A milder cousin of salicylic acid that exfoliates and smooths skin with less irritation.

Irritation

low

Source

synthetic

beautyskincareexfoliant
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Exfoliant

Glycolic Acid

Glycolic Acid

4.2

Glycolic acid is a well-researched exfoliant that smooths skin and boosts collagen, but it can cause irritation if overused or used at too high a concentration.

Irritation

moderate

Source

natural

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Exfoliant

Glyoxylic Acid

Glyoxylic Acid

3.8

Glyoxylic acid is a chemical exfoliant that helps smooth skin and reduce fine lines, but it is stronger than AHAs and requires careful use to avoid irritation.

Irritation

moderate

Source

synthetic

beautyskincareexfoliant
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Exfoliant

Grape Fruit Powder

Vitis Vinifera (Grape) Fruit Powder

4.0

A gentle, natural exfoliating powder rich in antioxidants, ideal for sensitive skin types looking for mild physical exfoliation.

Irritation

low

Source

natural

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Exfoliant

Grape Seed Powder

Vitis Vinifera (Grape) Seed Powder

4.0

Grape Seed Powder is a gentle, natural exfoliant that sloughs off dead skin cells without harsh microbeads, and its antioxidant content may offer additional skin-soothing benefits.

Irritation

low

Source

natural

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Exfoliant

Grape Skin Powder

Vitis Vinifera (Grape) Skin Powder

4.0

A gentle, antioxidant-rich natural exfoliant that helps polish skin without harsh microbeads.

Irritation

low

Source

natural

beautyskincareexfoliantantioxidant
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Exfoliant

Grapefruit Peel Powder

Citrus Grandis Peel Powder

4.0

Grapefruit peel powder offers gentle physical exfoliation and antioxidant benefits, but its gritty texture and potential for irritation mean it's best suited for rinse-off products and not for sensitive or compromised skin.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Exfoliant

Green Tea Seed Powder

Camellia Sinensis Seed Powder

4.0

A natural, antioxidant-rich exfoliant that gently buffs away dead skin without harsh microbeads.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Green Tea Seedcoat Powder

Camellia Sinensis Seedcoat Powder

3.8

A gentle, natural exfoliating powder from green tea seeds that also provides antioxidant protection, but research on its specific benefits is still limited.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Guarana Seed Powder

PAULLINIA CUPANA SEED POWDER

3.8

A gentle natural exfoliant with antioxidant benefits, but its caffeine content may be overhyped in topical skincare.

Irritation

low

Source

natural

beautyskincareexfoliant
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