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

Fragrance Ingredient

Benzyl Isobutyrate

Benzyl Isobutyrate

3.5

Benzyl isobutyrate is a synthetic fragrance ingredient that adds a sweet, floral scent to products; it is generally safe at low levels but may cause allergic reactions in sensitive individuals.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Fragrance Ingredient

Benzyl Isovalerate

Benzyl Isovalerate

3.5

Benzyl Isovalerate is a synthetic fragrance ingredient that adds a floral or fruity scent to products, but it offers no skincare benefits and may cause sensitivity in some individuals.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Emollient

Benzyl Laurate

Benzyl Laurate

4.0

Benzyl Laurate is a lightweight, non-greasy emollient that helps soften skin and improve product texture without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Fragrance

Benzyl Methyl Ether

BENZYL METHYL ETHER

3.5

Benzyl Methyl Ether is a synthetic fragrance ingredient with limited safety data; it may cause skin irritation in sensitive individuals.

Irritation

moderate

Source

synthetic

beautyskincarefragrance
Read ingredient review

Vasodilator

Benzyl Nicotinate

Benzyl Nicotinate

3.0

Benzyl nicotinate creates a temporary flush or warmth by widening blood vessels, but it offers no lasting skincare benefit and can irritate sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarevasodilator
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Emollient

Benzyl Octanoate

Benzyl Octanoate

3.8

Benzyl Octanoate is a gentle emollient and fragrance component that helps soften skin and improve product texture, with a low risk of irritation.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Humectant

Benzyl PCA

Benzyl PCA

3.8

Benzyl PCA is a gentle humectant that helps attract moisture to the skin, but it's less studied than more common hydrators like glycerin or hyaluronic acid.

Irritation

low

Source

synthetic

beautyskincarehumectant
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Fragrance Ingredient

Benzyl Phenylacetate

Benzyl Phenylacetate

3.5

Benzyl Phenylacetate is a synthetic fragrance ingredient that adds a sweet, honey-like scent, but it may be a concern for those with sensitive skin or fragrance allergies.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Fragrance Ingredient

Benzyl Propionate

BENZYL PROPIONATE

3.5

Benzyl Propionate is a synthetic fragrance ingredient that adds a sweet, floral scent to products; it is generally considered safe at low concentrations but may cause sensitivity in some individuals.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Fragrance ingredient

Benzyl Salicylate

Benzyl Salicylate

3.5

Benzyl Salicylate is a common fragrance ingredient that can help stabilize formulas but may cause skin reactions in sensitive individuals.

Irritation

moderate

Source

synthetic

beautyskincarefragrance
Read ingredient review

Fragrance Ingredient

Benzyl Tetrahydropyran

Benzyl Tetrahydropyran

3.8

A synthetic fragrance ingredient that adds a pleasant floral note but offers no skincare benefits and may cause sensitivity in some individuals.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Fragrance

Benzyl Tiglate

BENZYL TIGLATE

3.5

Benzyl Tiglate is a synthetic fragrance ingredient that adds a sweet, floral scent to products; it is generally considered safe at low concentrations but may cause sensitivity in some individuals.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Antioxidant

Benzyl Ursolate

Benzyl Ursolate

3.8

Benzyl Ursolate is a promising antioxidant and anti-inflammatory ingredient, but research is still early and it's not widely used in mainstream products.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
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Fragrance Ingredient

Benzyl Valerate

Benzyl Valerate

3.5

Benzyl Valerate is a synthetic fragrance ingredient that adds a pleasant scent to products, but it offers no skincare benefits and may cause sensitivity in some individuals.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Plant growth regulator

Benzyladenine

Benzyladenine

3.5

Benzyladenine is a synthetic plant growth regulator that may help reduce the appearance of fine lines and wrinkles, but human research is limited.

Irritation

low

Source

synthetic

beautyskincareanti-aging
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Skin conditioning agent

Benzylcarbamoyl Naphthylmethyl Lauroylbenzoate Complex

BENZYLCARBAMOYL NAPHTHYLMETHYL LAUROYLBENZOATEMETHYL DIOXOMETHYLPYRAZINOPYRIMIDINE

3.8

A novel synthetic compound that may help firm skin and soften wrinkles, but research is still limited compared to more established anti-aging ingredients.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Preservative

Benzylhemiformal

Benzylhemiformal

3.5

Benzylhemiformal is an effective preservative but can be a skin sensitizer, especially in leave-on products.

Irritation

moderate

Source

synthetic

beautyskincarepreservative
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UV Filter

Benzylidene Camphor Sulfonic Acid

Benzylidene Camphor Sulfonic Acid

3.8

A synthetic UV filter that effectively absorbs UVB and short UVA rays, but its use is restricted in some countries due to environmental concerns.

Irritation

low

Source

synthetic

beautyskincaresunscreen
Read ingredient review

Preservative

Benzylparaben

Benzylparaben

3.0

Benzylparaben is an effective preservative, but its safety is debated due to potential endocrine-disrupting effects, leading many brands to avoid it.

Irritation

low

Source

synthetic

beautyskincarepreservative
Read ingredient review

Conditioning Agent

Benzyltrimonium Hydrolyzed Collagen

Benzyltrimonium Hydrolyzed Collagen

3.8

A positively charged collagen derivative that clings to hair and skin to provide conditioning, smoothness, and a protective film.

Irritation

low

Source

semi-synthetic

beautyskincarehaircare
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Antioxidant

Berchemia Lineata Leaf Extract

Berchemia Lineata Leaf Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Berchemia Lineata Root Extract

BERCHEMIA LINEATA ROOT EXTRACT

3.8

A gentle plant-root extract with antioxidant potential, but research is still early and benefits are not yet proven in human skin.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Bergamot Fruit Extract

Citrus Aurantium Bergamia Fruit Extract

3.5

Bergamot fruit extract adds a pleasant citrus scent and antioxidant benefits, but its phototoxic compounds mean it must be used in low concentrations or with the furocoumarins removed.

Irritation

moderate

Source

natural

beautyskincareantioxidant
Read ingredient review

Fragrance

Bergamot Fruit Oil

Citrus Aurantium Bergamia Fruit Oil

3.5

Bergamot fruit oil adds a pleasant citrus scent but can cause sun sensitivity; look for bergapten-free versions for safer daytime use.

Irritation

moderate

Source

natural

beautyskincarefragrance
Read ingredient review

Fragrance

Bergamot Fruit Water

Citrus Aurantium Bergamia Fruit Water

3.8

Bergamot fruit water adds a fresh citrus scent and mild toning effect, but can increase sun sensitivity if not properly processed.

Irritation

moderate

Source

natural

beautyskincarefragrance
Read ingredient review

Antioxidant

Bergamot Leaf Cell Extract

Citrus Aurantium Bergamia Leaf Cell Extract

4.0

A gentle, lab-grown antioxidant from bergamot leaves that may help calm skin and fight free radicals, but research is still early.

Irritation

low

Source

biotech

beautyskincareantioxidant
Read ingredient review

Antioxidant

Bergamot Leaf Extract

MONARDA DIDYMA LEAF EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Fragrance

Bergamot Leaf Oil

Citrus Bergamia Melarosa Leaf Oil

3.8

Bergamot leaf oil adds a fresh citrus scent to products but can be irritating and is phototoxic if not properly processed.

Irritation

moderate

Source

natural

beautyskincarefragrance
Read ingredient review

Antioxidant

Bergamot Mint Extract

Monarda Didyma Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Fragrance

Bergamot Peel Oil

Citrus Bergamia Peel Oil Expressed

3.8

Bergamot Peel Oil adds a fresh citrus scent to products but can cause sun sensitivity and irritation, so it's best used with caution and proper formulation.

Irritation

moderate

Source

natural

beautyskincarefragrance
Read ingredient review

Astringent

Bergamot Peel Water

CITRUS AURANTIUM BERGAMIA PEEL WATER

3.8

Bergamot Peel Water offers a refreshing, lightly astringent feel but can increase sun sensitivity due to natural photosensitizing compounds.

Irritation

moderate

Source

natural

beautyskincareastringent
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Antioxidant

Bergenia Ciliata Root Extract

Bergenia Ciliata Root Extract

3.8

A gentle plant-root extract with antioxidant potential, but research is still early and benefits are not yet proven in human skin.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Soothing agent

Bergenia Emeiensis Root Extract

Bergenia Emeiensis Root Extract

3.8

A gentle, antioxidant-rich root extract that may help calm skin and fight environmental stress, but research is still early.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Bergenia Leaf Extract

Bergenia Crassifolia Leaf Extract

3.8

A gentle plant extract that may help protect skin from environmental stress and calm minor irritation, though research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Bergenia Root Extract

Bergenia Crassifolia Root Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Bergenin

Bergenin

3.8

Bergenin is a plant-derived antioxidant that may help calm skin and fight free radical damage, but research in cosmetics is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Soothing agent

Bermuda Grass Powder

CYNODON DACTYLON POWDER

3.5

A gentle, plant-based powder with antioxidant potential, but research is limited and it may not be a standout ingredient.

Irritation

low

Source

natural

beautyskincaresoothing agent
Read ingredient review

Antioxidant

Berry & Herb Ferment Complex

LACTOBACILLUS/SACCHAROMYCES/(BLUEBERRY/RASPBERRY/STRAWBERRY/CRANBERRY/EUTERPE OLERACEA) FRUIT/THYME/ROSEMARY/VACCINIUM MYRTILLUS/ROSA CANINA/CYMBOPOGON SCHOENANTHUS/ERIOCEPHALUS PUNCTULATUS FERMENT

4.0

A fermented botanical complex that may help soothe and protect skin with antioxidants, though research on the specific blend is limited.

Irritation

low

Source

biotech

beautyskincareantioxidant
Read ingredient review

Antioxidant

Berry Root & Fruit Complex

BERBERIS VULGARIS ROOT/FRAGARIA CHILOENSIS FRUIT/LYCIUM CHINENSE FRUIT/MORUS NIGRA FRUIT EXTRACT

3.8

A gentle botanical blend that may help calm skin and fight free radicals, but research is limited on this specific combination.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Skin conditioning agent

Beta-Alanine

Beta-Alanine

3.8

Beta-Alanine is a gentle amino acid that helps maintain skin hydration and resilience, but it is not a standout active for dramatic anti-aging results.

Irritation

low

Source

natural

beautyskincareamino acid
Read ingredient review

Chelating Agent

Beta-Alanine Diacetic Acid

Beta-Alanine Diacetic Acid

4.0

A gentle synthetic chelator that helps your skincare products stay effective longer by preventing metal ions from breaking down ingredients.

Irritation

low

Source

synthetic

beautyskincarestabilizer
Read ingredient review

Colorant

Beta-Carotene

CI 75130

4.0

A natural orange-red pigment that also provides antioxidant benefits, but its color can be unstable in some formulations.

Irritation

low

Source

natural

beautyskincarecolorantantioxidant
Read ingredient review

Soothing Agent

Beta-Caryophyllene

BETA-CARYOPHYLLENE

4.0

Beta-Caryophyllene is a plant-derived compound that helps calm skin and fight oxidative stress, making it a gentle addition to soothing formulations.

Irritation

low

Source

natural

beautyskincaresoothing agent
Read ingredient review

Humectant

Beta-Glucan

Beta-Glucan

4.5

A gentle, hydrating sugar that calms irritation and supports the skin barrier without clogging pores.

Irritation

low

Source

natural

beautyskincarehumectant
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Humectant

Beta-Glucan Palmitate

Beta-Glucan Palmitate

4.0

A gentle, semi-synthetic humectant that helps hydrate and calm the skin, with improved stability over plain beta-glucan.

Irritation

low

Source

semi-synthetic

beautyskincarehumectantsoothing agent
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Fragrance

Beta-Ionol

Beta-Ionol

3.5

Beta-Ionol is a synthetic fragrance ingredient that adds a pleasant scent to products but offers no direct skincare benefits.

Irritation

low

Source

synthetic

beautyskincarefragrance
Read ingredient review

Fragrance

Beta-Ionone

Beta-Ionone

3.8

Beta-Ionone adds a pleasant violet-like scent to products and may offer mild antioxidant benefits, but it can be a skin sensitizer for some people.

Irritation

moderate

Source

natural

beautyskincarefragrance
Read ingredient review

Antioxidant

Beta-Pinen-3-Ol

BETA-PINEN-3-OL

3.8

A plant-derived antioxidant that may help protect skin from environmental stress, but its use is limited by potential irritation at higher levels.

Irritation

moderate

Source

natural

beautyskincareantioxidant
Read ingredient review

Fragrance Ingredient

Beta-Pinen-3-yl Acetate

BETA-PINEN-3-YL ACETATE

3.5

A synthetic fragrance ingredient that adds a pine-like scent but may cause irritation in sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarefragrance
Read ingredient review