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 20,303
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

Calendula Seed Oil

Calendula Officinalis Seed Oil

4.0

A gentle, non-greasy oil that helps calm and soften skin, ideal for sensitive or irritated complexions.

Irritation

low

Source

natural

beautyskincareemollient
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Humectant

Calf Skin Extract

Calf Skin Extract

2.5

Calf Skin Extract is a protein-rich ingredient that may help moisturize and temporarily smooth skin, but it lacks strong research and raises ethical and sourcing concerns.

Irritation

low

Source

natural

beautyskincarehumectant
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Emollient

California Nutmeg Oil

Torreya californica oil

3.8

A gentle, plant-based oil that hydrates and soothes, but research on its specific benefits is still limited.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

California Poppy Extract

ESCHSCHOLZIA CALIFORNICA FLOWER/LEAF/STEM EXTRACT

3.8

California poppy extract is a gentle botanical with antioxidant and soothing potential, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing agent

California Poppy Leaf Extract

Eschscholzia californica leaf extract

3.8

A gentle botanical extract that may help calm irritated skin and provide antioxidant protection, though research is still early.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

California Torreya Extract

Torreya Californica Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

California Yerba Santa Ferment

Lactobacillus/Eriodictyon Californicum Ferment Extract

4.0

A gentle fermented botanical extract that may help calm skin and fight oxidative stress, though human research is limited.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Calla Lily Callus Extract

ZANTEDESCHIA AETHIOPICA CALLUS EXTRACT

3.5

A plant-based antioxidant extract with early research suggesting soothing benefits, but more studies are needed to confirm its effectiveness in skincare.

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing Agent

Calla Lily Extract

ZANTEDESCHIA AETHIOPICA FLOWER/STEM EXTRACT

3.5

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

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Calla Lily Flower Extract

Zantedeschia Elliottiana Flower Extract

3.8

A gentle botanical extract that may offer antioxidant benefits, but research is limited and it's not a powerhouse ingredient.

Irritation

low

Source

natural

beautyskincareantioxidant
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Humectant

Calliblepharis Ciliata Extract

Calliblepharis Ciliata Extract

3.5

A gentle red seaweed extract that helps hydrate skin and may offer antioxidant protection, but research is still early.

Irritation

low

Source

natural

beautyskincarehumectant
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Antioxidant

Callicarpa Flower Extract

Callicarpa Macrophylla Flower 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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Antioxidant

Callitris Columellaris Extract

Callitris Columellaris Leaf/Wood Extract

3.8

A gentle botanical extract with antioxidant potential, but research is still limited compared to more established plant extracts.

Irritation

low

Source

natural

beautyskincareantioxidant
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Film-Former

Callitris Gum

Callitris Quadrivalvis Gum

3.8

A natural tree resin that helps products form a flexible film on skin, hair, or nails, but may feel tacky for some users.

Irritation

low

Source

natural

beautyskincarefilm-former
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Fragrance

Callitris Oil

CALLITRIS COLUMELLARIS LEAF/TWIG OIL

3.8

A fragrant essential oil with emerging antimicrobial research, best used in low concentrations due to potential skin irritation.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Emollient

Callitris Seed Oil

CALLITRIS COLUMELLARIS SEED OIL

3.8

A gentle, plant-based oil that helps soften and condition skin with a light feel, though research on its specific benefits is still limited.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Calodendrum Capense Nut Oil

CALODENDRUM CAPENSE NUT OIL

4.3

A gentle, fast-absorbing oil rich in essential fatty acids and antioxidants that hydrates without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

Calothrix Crustacea Extract

CALOTHRIX CRUSTACEA EXTRACT

3.8

A gentle algae extract that may help protect skin from environmental stress, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Cambridge Geranium Extract

Geranium Cantabrigiense Flower/Leaf Extract

3.8

A gentle botanical extract that may help calm skin and fight free radical damage, but research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Moisturizer

Camel Milk

CAMEL MILK

3.8

Camel milk is a gentle, nutrient-rich moisturizer that may soothe dry or sensitive skin, but scientific evidence is still limited.

Irritation

low

Source

natural

beautyskincaremoisturizer
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Humectant

Camel Milk Extract

CAMEL MILK EXTRACT

3.8

Camel milk extract is a gentle, hydrating ingredient that may help soothe and moisturize sensitive skin, but research on its cosmetic benefits is still limited.

Irritation

low

Source

natural

beautyskincaremoisturizer
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Soothing agent

Camel Thorn Extract

HEDYSARUM ALHAGI LEAF/STEM 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
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Antioxidant

Camelina Seed Extract

CAMELINA SATIVA SEED EXTRACT

4.0

Camelina seed extract is a gentle, antioxidant-rich ingredient that helps hydrate and soothe skin, making it a good choice for sensitive or dry skin types.

Irritation

low

Source

natural

beautyskincareantioxidant
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Emollient

Camelina Seed Oil Ethyl Esters

CAMELINA SATIVA SEED OIL ETHYL ESTERS

4.0

A silky, non-greasy oil alternative that hydrates and softens skin, suitable for most skin types including oily and acne-prone.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Camellia & Palm Amino Esters

CAMELLIA SINENSIS SEED OIL/PALM OIL AMINOPROPANEDIOL ESTERS

4.0

A gentle, semi-synthetic emollient that combines the nourishing properties of camellia and palm oils with improved stability and feel.

Irritation

low

Source

semi-synthetic

beautyskincarehaircareemollient
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Antioxidant

Camellia Euryoides Leaf Extract

CAMELLIA EURYOIDES LEAF EXTRACT

3.8

A gentle, antioxidant-rich leaf extract that may help calm skin and defend against environmental stress, though research is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Skin conditioning agent

Camellia Ferment Extract

Pseudozyma Epicola/Camellia Japonica Seed Oil Ferment Extract Filtrate

3.8

A fermented camellia seed oil extract that may offer soothing and conditioning benefits, though research is still emerging.

Irritation

low

Source

biotech

beautyskincaresoothing agent
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Emollient

Camellia Ferment Oil

Bacillus/Camellia Japonica Seed Ferment Oil

4.0

A fermented camellia oil that may improve skin hydration and barrier strength, but research is still early.

Irritation

low

Source

biotech

beautyskincareemollient
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Emollient

Camellia Japonica Amino Lipid Complex

CAMELLIA JAPONICA SEED OIL AMINOPROPANEDIOL AMIDES/ESTERS

4.0

A gentle, semi-synthetic emollient derived from camellia oil that helps soften and condition skin with low irritation potential.

Irritation

low

Source

semi-synthetic

beautyskincareemollientconditioning agent
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Antioxidant

Camellia Japonica Callus Extract

Camellia Japonica Callus Extract

4.0

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

Irritation

low

Source

natural

beautyskincareantioxidant
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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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Soothing Agent

Camellia Japonica Flower Water

CAMELLIA JAPONICA FLOWER WATER

4.0

A gentle, hydrating floral water that soothes skin and adds a light, natural fragrance—great for sensitive or dry skin types.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Fragrance

Camellia Japonica Gamma-Lactone

CAMELLIA JAPONICA GAMMA-LACTONE

3.8

A natural fragrance and skin-conditioning ingredient from camellia flowers, but its scent can be sensitizing for some.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Antioxidant

Camellia Japonica Leaf Cell Extract

Camellia Japonica Leaf Cell Extract

4.0

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

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Camellia Japonica Meristem Cell Extract

Camellia Japonica Meristem Cell Extract

4.0

A gentle, antioxidant-rich ingredient from camellia plant stem cells that may help protect skin from environmental stress and support a youthful appearance.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Camellia Japonica Ovary Powder

CAMELLIA JAPONICA OVARY POWDER

3.8

A gentle, antioxidant-rich botanical powder that may help calm and protect skin, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Emollient

Camellia Japonica Seed Oil

CAMELLIA JAPONICA SEED OIL

4.3

A lightweight, non-greasy oil that deeply moisturizes and soothes without clogging pores—great for dry or sensitive skin.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Camellia Japonica Seed Oil Ethyl Esters

CAMELLIA JAPONICA SEED OIL ETHYL ESTERS

4.0

A lightweight, non-greasy emollient derived from camellia oil, ideal for those who want the benefits of a natural oil without the heavy feel.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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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
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Humectant

Camellia Japonica Seed Water

CAMELLIA JAPONICA SEED WATER

4.0

A gentle, hydrating water that provides antioxidant benefits and helps soothe the skin, making it a great base for sensitive skin formulas.

Irritation

low

Source

natural

beautyskincarehumectant
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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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Emollient

Camellia Kissi Seed Oil

CAMELLIA KISSI SEED OIL

4.0

A gentle, antioxidant-rich oil that hydrates and softens skin without clogging pores, suitable for most skin types.

Irritation

low

Source

natural

beautyskincarehaircare
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Emollient

Camellia Leaf Extract Esters

CAPRYLIC/CAPRIC/CAMELLIA SINENSIS LEAF EXTRACT ESTERS

4.0

A gentle, semi-synthetic emollient that combines fatty acids with green tea antioxidants for soothing hydration.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Antioxidant

Camellia Oleifera Leaf Extract

Camellia Oleifera Leaf Extract

4.0

A gentle, antioxidant-rich leaf extract that helps protect skin from environmental stress and may calm minor irritation.

Irritation

low

Source

natural

beautyskincareantioxidant
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Emollient

Camellia Oleifera Seed Oil

Camellia Oleifera Seed Oil / Hydrogenated Camellia Oleifera Seed Oil Esters

4.3

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

Irritation

low

Source

natural

beautyskincareemollient
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Emulsifier

Camellia Oleifera Seed Oil Amides/Ester

CAMELLIA OLEIFERA SEED OIL AMINOPROPANEDIOL AMIDES/ESTERS

4.0

A gentle, semi-synthetic emulsifier derived from camellia oil that helps blend water and oil phases while providing mild skin conditioning.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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