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

Humectant

Calcium Lactate

Calcium Lactate

4.0

Calcium lactate is a gentle, hydrating exfoliant that helps smooth skin without the sting of stronger acids.

Irritation

low

Source

synthetic

beautyskincarehumectantexfoliant
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Exfoliant

Calcium Salicylate

Calcium Salicylate

3.8

A milder alternative to salicylic acid, offering gentle exfoliation and soothing benefits, ideal for sensitive or dry skin types.

Irritation

low

Source

synthetic

beautyskincareexfoliant
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Abrasive

Calcium Tartrate

Calcium Tartrate

3.8

Calcium Tartrate is a gentle, natural exfoliant that helps smooth skin without harsh microbeads, but it offers no active skincare benefits beyond physical exfoliation.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Camellia Japonica Flower Powder

CAMELLIA JAPONICA FLOWER POWDER

3.8

A gentle, natural exfoliating powder with antioxidant benefits, best for those seeking a mild physical scrub or a silky finish in powders.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Camellia Japonica Seed Powder

CAMELLIA JAPONICA SEED POWDER

3.8

A gentle, natural exfoliating powder from camellia seeds that also provides antioxidant support, but research on its skincare benefits is still limited.

Irritation

low

Source

natural

beautyskincareexfoliant
Read ingredient review

Exfoliant

Camellia Japonica Seedcoat Powder

CAMELLIA JAPONICA SEEDCOAT POWDER

3.8

A gentle, natural exfoliating powder from camellia seeds that may also provide antioxidant support, but research is still limited.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Cananga Flower Powder

Cananga Odorata Flower Powder

3.8

A gentle, natural exfoliant with a pleasant floral scent, but its benefits beyond texture and aroma are not well-studied.

Irritation

low

Source

natural

beautyskincareexfoliant
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Abrasive

Carbonado Extract

Carbonado Extract

3.5

Carbonado Extract is a natural diamond powder used for physical exfoliation, but its abrasiveness requires careful formulation to avoid skin damage.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Exfoliant

Cardamom Seed Powder

ELETTARIA CARDAMOMUM SEED POWDER

3.5

Cardamom seed powder offers gentle physical exfoliation and antioxidant benefits, but research on its cosmetic efficacy is limited.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Carrot Root Powder

Daucus Carota Sativa Root Powder

4.0

A gentle, natural exfoliating powder rich in beta-carotene that can help brighten and smooth skin without harsh microbeads.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Cashew Apple Fiber

Anacardium Occidentale Peduncle Fiber

3.8

Cashew apple fiber is a gentle, natural exfoliant that helps slough off dead skin cells without harsh microbeads, but research on its benefits is still emerging.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Cassia Italica Leaf Powder

Cassia Italica Leaf Powder

3.8

A gentle, plant-based powder that lightly exfoliates and soothes skin, best suited for rinse-off masks and scrubs.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Cassia Seed Powder

Cassia Obtusifolia Seed Powder

3.8

A gentle, natural exfoliating powder that helps remove dead skin cells and absorb excess oil, but research on its specific benefits is limited.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Cellulase

Cellulase

3.8

Cellulase is a gentle enzyme exfoliant that dissolves dead skin cells without harsh scrubbing, making it ideal for sensitive skin.

Irritation

low

Source

biotech

beautyskincareexfoliant
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Exfoliant

Ceylon Cinnamon Bark Powder

CINNAMOMUM ZEYLANICUM BARK POWDER

3.5

A natural exfoliating powder with antioxidant benefits, but can be irritating for sensitive skin due to its essential oil content.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Exfoliant

Cherry Seed Powder

Prunus Avium Seed Powder

3.8

A gentle, natural physical exfoliant that helps smooth skin without harsh microplastics, but may feel too gritty for sensitive skin.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Cherry Shell Powder

Prunus Cerasus Shell Powder

3.8

A natural, biodegradable exfoliant that gently polishes skin, but the irregular particle shape can cause micro-tears if used too aggressively.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Exfoliant

Chestnut Shell Powder

Castanea Crenata Shell Powder

3.8

A gentle, natural exfoliating powder from chestnut shells that helps polish skin without harsh microbeads.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Chia Seed Powder

Salvia Hispanica Seed Powder

4.0

Chia seed powder offers gentle physical exfoliation and a boost of hydration, making it a mild choice for most skin types.

Irritation

low

Source

natural

beautyskincareexfolianthumectant
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Exfoliant

Chickpea Seed Powder

Cicer Arietinum Seed Powder

3.8

A gentle, natural exfoliant that can help remove dead skin cells and absorb excess oil without harshness.

Irritation

low

Source

natural

beautyskincareexfoliant
Read ingredient review

Exfoliant

Chitosan Salicylate

Chitosan Salicylate

4.0

A gentle exfoliant that pairs salicylic acid with a soothing, film-forming biopolymer, making it a good option for acne-prone or sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincareexfoliantfilm-former
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pH Adjuster

Chloroacetic Acid

Chloroacetic Acid

2.5

Chloroacetic acid is a strong synthetic acid rarely used in consumer skincare due to high irritation risk; it appears mostly in professional chemical peels or as a pH adjuster in very low concentrations.

Irritation

high

Source

synthetic

beautyskincareexfoliant
Read ingredient review

Exfoliant

Chlorosalicylic Acid

Chlorosalicylic Acid

3.8

A gentle cousin of salicylic acid that may help with mild acne and surface exfoliation, but research is still limited.

Irritation

moderate

Source

synthetic

beautyskincareexfoliant
Read ingredient review

Exfoliant

Chymotrypsin

CHYMOTRYPSIN

3.5

Chymotrypsin is an enzyme exfoliant that can help remove dead skin cells and reduce inflammation, but its use in skincare is less common than other enzymes like papain or bromelain.

Irritation

moderate

Source

natural

beautyskincareexfoliant
Read ingredient review

Exfoliant

Citric Acid

Citric Acid

4.0

Citric acid is a gentle AHA that exfoliates, brightens, and helps balance your product's pH, but it can cause irritation at high concentrations.

Irritation

moderate

Source

natural

beautyskincareexfoliantpH adjuster
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Exfoliant

Citrus Depressa Peel Powder

Citrus Depressa Peel Powder

3.8

A gentle, natural exfoliating powder from a citrus fruit peel, best for those who prefer plant-based physical exfoliants with antioxidant benefits.

Irritation

low

Source

natural

beautyskincareexfoliant
Read ingredient review

Exfoliant

Citrus Jabara Peel Powder

Citrus Jabara Peel Powder

3.8

A gentle, natural exfoliant from a rare citrus fruit that also provides antioxidant benefits, but research is still limited.

Irritation

low

Source

natural

beautyskincareexfoliant
Read ingredient review

Exfoliant

Citrus Unshiu Ferment

CITRUS UNSHIU FRUIT/SUCROSE FERMENT FILTRATE

4.0

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

Irritation

low

Source

natural

beautyskincareexfoliantantioxidant
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Exfoliant

Citrus Unshiu Peel Powder

CITRUS UNSHIU PEEL POWDER

3.8

A gentle, natural exfoliant from mandarin peel that also provides antioxidant protection, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

beautyskincareexfoliant
Read ingredient review

Exfoliant

Clostridium Histolyticum Collagenase

Clostridium Histolyticum Collagenase

3.0

A potent enzyme that dissolves collagen, used sparingly in skincare for deep exfoliation, but requires caution due to its strength.

Irritation

moderate

Source

biotech

beautyskincareexfoliant
Read ingredient review

Exfoliant

Clove Bud Powder

EUGENIA CARYOPHYLLUS FLOWER BUD POWDER

3.5

Clove bud powder offers gentle physical exfoliation and a warm, spicy scent, but can be irritating for sensitive skin due to its eugenol content.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Exfoliant

Cocoa Seed Powder

THEOBROMA CACAO SEED POWDER

4.0

A gentle, natural exfoliant and antioxidant that can brighten skin without harshness, but may be messy in formulations.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Cocoa Shell Powder

THEOBROMA CACAO SHELL POWDER

3.8

A gentle, natural exfoliant with antioxidant potential, best suited for rinse-off scrubs.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Coconut Fruit Powder

Cocos Nucifera Fruit Powder

3.8

Coconut fruit powder is a gentle, natural exfoliant that helps buff away dead skin cells without harsh microbeads.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Collagenase

Clostridium Histolyticum Collagenase

3.5

A powerful enzyme exfoliant that dissolves dead skin but can be irritating; best reserved for professional or short-contact use.

Irritation

high

Source

biotech

beautyskincareexfoliant
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Exfoliant

Corallina Officinalis Powder

Corallina Officinalis Powder

3.8

A gentle, natural exfoliant from red seaweed that polishes skin without harsh microbeads, but its benefits beyond texture are not well-studied.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Corn Cob Meal

ZEA MAYS COB MEAL

3.8

A gentle, natural physical exfoliant that helps slough off dead skin cells without harsh chemicals.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Corn Kernel Meal

ZEA MAYS KERNEL MEAL

3.8

A natural, gentle physical exfoliant that sloughs off dead skin cells without harsh microbeads, but may feel too gritty for sensitive skin.

Irritation

low

Source

natural

beautyskincareexfoliant
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Antioxidant

Cranberry Fruit Powder

VACCINIUM MACROCARPON FRUIT POWDER

4.0

Cranberry fruit powder offers gentle exfoliation and antioxidant protection, but its benefits are best supported by whole-fruit research rather than isolated powder studies.

Irritation

low

Source

natural

beautyskincareantioxidantexfoliant
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Exfoliant

Cranberry Seed Powder

VACCINIUM MACROCARPON SEED POWDER

4.0

A gentle, natural exfoliating powder that also provides antioxidant benefits from cranberry seeds.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Cranberry Seedcake

VACCINIUM OXYCOCCOS SEEDCAKE

3.8

A gentle, natural exfoliant from cranberry seeds that also delivers antioxidants, but research on its skincare benefits is still limited.

Irritation

low

Source

natural

beautyskincareexfoliant
Read ingredient review

Exfoliant

Cranberry Seedcake Powder

VACCINIUM MACROCARPON SEEDCAKE POWDER

4.0

A gentle, natural exfoliating powder from cranberry seeds that also provides antioxidant benefits, but research on its skincare efficacy is still limited.

Irritation

low

Source

natural

beautyskincareexfoliant
Read ingredient review

Exfoliant

Cumin Seed Powder

Cuminum Cyminum Seed Powder

3.8

Cumin Seed Powder offers gentle physical exfoliation and antioxidant benefits, but its evidence in skincare is still emerging and it may cause irritation for very sensitive skin.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Cupuaçu Seed Powder

THEOBROMA GRANDIFLORUM SEED POWDER

4.0

Cupuaçu seed powder offers gentle physical exfoliation plus antioxidant benefits, making it a soothing alternative to harsher scrubs.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Cymbopogon Flexuosus Leaf Powder

CYMBOPOGON FLEXUOSUS LEAF POWDER

3.5

A natural exfoliant from lemongrass leaves that offers gentle scrubbing and a fresh scent, but may cause irritation for sensitive skin.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Exfoliant

Cysteic Acid

CYSTEIC ACID

3.8

Cysteic acid is a gentle exfoliating amino acid derivative that may help brighten skin and support antioxidant defenses, but research is still emerging.

Irritation

low

Source

semi-synthetic

beautyskincareexfoliant
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Exfoliant

Date Fruit Powder

Phoenix Dactylifera Fruit Powder

4.0

A gentle, natural exfoliant that also provides antioxidant benefits, but may feel gritty in some formulas.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Delta-Valerolactone

DELTA-VALEROLACTONE

3.8

A gentle exfoliating ingredient that helps smooth skin texture and improve radiance with minimal irritation.

Irritation

low

Source

synthetic

beautyskincareexfoliant
Read ingredient review

Exfoliant

Desert Lime Fruit Powder

Citrus Glauca Fruit Powder

3.8

A gentle, natural exfoliating powder from Australian desert lime that offers mild antioxidant benefits and a touch of fruit-derived texture.

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Diatomaceous Earth

SOLUM DIATOMEAE

3.8

A natural, gritty powder that gently scrubs away dead skin and soaks up excess oil, but can be too harsh for sensitive or broken skin.

Irritation

moderate

Source

natural

beautyskincareexfoliant
Read ingredient review

Exfoliant

Dipotassium Azelate

Dipotassium Azelate

4.0

A gentler, salt-based form of azelaic acid that helps brighten skin and smooth texture with less irritation.

Irritation

low

Source

synthetic

beautyskincareexfoliant
Read ingredient review

Exfoliant

Dipteryx Alata Shell Powder

Dipteryx Alata Shell Powder

3.8

A natural, biodegradable exfoliant that provides gentle physical scrubbing, but may be too rough for sensitive or acne-prone skin.

Irritation

moderate

Source

natural

beautyskincareexfoliant
Read ingredient review

Exfoliant

Disodium Azelate

Disodium Azelate

4.0

A gentle alternative to azelaic acid that helps even skin tone and smooth texture with low irritation risk.

Irritation

low

Source

synthetic

beautyskincareexfoliant
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Exfoliant

Disodium Salicylphosphate

Disodium Salicylphosphate

3.8

A milder, phosphate-modified form of salicylic acid that aims to exfoliate and brighten skin with less irritation.

Irritation

low

Source

synthetic

beautyskincareexfoliant
Read ingredient review

Sebum Regulator

Dodecanedioic Acid

Dodecanedioic Acid

4.0

A gentle, oil-soluble acid that helps control shine and smooth skin texture without the irritation of stronger exfoliants.

Irritation

low

Source

synthetic

beautyskincareexfoliant
Read ingredient review

Bulking Agent

Dolomite

DOLOMITE

3.5

Dolomite is a safe, natural mineral powder that helps absorb oil and provide gentle physical exfoliation, but it offers no active skincare benefits.

Irritation

low

Source

natural

beautyskincareexfoliant
Read ingredient review

Abrasive

Eggshell Powder

OVUM SHELL POWDER

3.5

Eggshell powder is a natural, gritty ingredient used for gentle physical exfoliation, but its particle size and sharpness can vary, so it may be irritating for sensitive skin.

Irritation

moderate

Source

natural

beautyskincareexfoliant
Read ingredient review