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

Octyldodecanol

Octyldodecanol

4.0

A reliable, lightweight emollient that helps products spread smoothly without feeling greasy.

Irritation

low

Source

synthetic

beautyskincareemollient
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Surfactant

Octyldodeceth-10

Octyldodeceth-10

4.0

A gentle, ethoxylated surfactant that helps cleanse without stripping the skin, making it a good choice for sensitive skin formulas.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Emulsifier

Octyldodeceth-16

Octyldodeceth-16

4.0

A gentle synthetic emulsifier that helps create stable, creamy formulas without common irritation.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emulsifier

Octyldodeceth-2

OCTYLDODECETH-2

4.0

A gentle, synthetic emulsifier that helps oil and water mix in your skincare products without causing irritation.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Surfactant

Octyldodeceth-20

Octyldodeceth-20

4.0

A gentle, non-stripping surfactant that helps mix oil and water, making it a good choice for sensitive skin cleansers and lightweight emulsions.

Irritation

low

Source

synthetic

beautyskincaresurfactant
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Surfactant

Octyldodeceth-25

Octyldodeceth-25

4.0

A mild, water-soluble emulsifier that helps blend oils and water without stripping the skin, making it a good choice for gentle cleansers and lotions.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Emulsifier

Octyldodeceth-30

Octyldodeceth-30

4.0

A mild, effective emulsifier that helps blend water and oil without stripping the skin, making it a solid choice for gentle cleansers and moisturizers.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emulsifier

Octyldodeceth-5

Octyldodeceth-5

4.0

A gentle, synthetic emulsifier that helps create stable, smooth formulas without common irritation.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Emollient

Octyldodecyl Avocadoate

OCTYLDODECYL AVOCADOATE

4.3

A lightweight, non-greasy emollient derived from avocado oil that helps soften skin without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Beeswax

Octyldodecyl Beeswax

4.0

A gentle, modified beeswax that softens skin and improves product texture without common beeswax sensitivities.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Behenate

OCTYLDODECYL BEHENATE

4.2

A gentle, non-greasy emollient that softens skin and improves product texture without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Benzoate

Octyldodecyl Benzoate

4.0

A reliable, lightweight emollient that softens skin without feeling greasy, making it a popular choice for non-comedogenic formulas.

Irritation

low

Source

synthetic

beautyskincareemollient
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Film Former

Octyldodecyl Citrate Crosspolymer

Octyldodecyl Citrate Crosspolymer

4.0

A gentle, silicone-alternative film former that helps makeup and skincare stay put without feeling heavy or greasy.

Irritation

low

Source

semi-synthetic

beautyskincarefilm-former
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Emollient

Octyldodecyl Cocoate

Octyldodecyl Cocoate

4.0

A gentle, non-greasy emollient that hydrates and improves product feel without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Erucate

Octyldodecyl Erucate

4.0

A lightweight, non-greasy emollient that helps soften skin and improve product texture with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Ethylhexanoate

OCTYLDODECYL ETHYLHEXANOATE

4.2

A lightweight, silky emollient that improves product texture without clogging pores or causing greasiness.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Glycol Grapeseedate

OCTYLDODECYL GLYCOL GRAPESEEDATE

4.0

A lightweight, non-greasy emollient derived from grapeseed oil that hydrates and softens skin without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Isostearate

Octyldodecyl Isostearate

4.0

A lightweight, non-greasy emollient that helps soften skin and improve product texture with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Lactate

Octyldodecyl Lactate

4.0

A silky, non-greasy emollient that hydrates and smooths skin, suitable for most skin types including oily and acne-prone.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Lanolate

Octyldodecyl Lanolate

4.0

A gentle, lanolin-derived emollient that softens skin without the heavy feel of pure lanolin.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Meadowfoamate

OCTYLDODECYL MEADOWFOAMATE

4.5

A silky, non-greasy emollient that softens skin without clogging pores, ideal for sensitive and oily skin types.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Photostabilizer

Octyldodecyl Methoxycrylene

Octyldodecyl Methoxycrylene

4.0

Octyldodecyl Methoxycrylene is a synthetic photostabilizer that helps keep other sunscreen filters effective longer when exposed to sunlight.

Irritation

low

Source

synthetic

beautyskincaresunscreen
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Emollient

Octyldodecyl Myristate

Octyldodecyl Myristate

4.0

A lightweight, non-greasy emollient that softens skin and improves product texture with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Octyldodecyl Neodecanoate

Octyldodecyl Neodecanoate

4.0

A lightweight, synthetic emollient that softens skin without clogging pores, commonly used to improve product texture and spreadability.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Octyldodecyl Neopentanoate

Octyldodecyl Neopentanoate

4.0

A lightweight synthetic emollient that spreads easily and leaves a silky finish, ideal for non-greasy formulations.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Oleate

Octyldodecyl Oleate

4.0

A silky, non-greasy emollient that softens skin and helps other ingredients spread evenly, with a low risk of clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
Read ingredient review

Emollient

Octyldodecyl Olivate

OCTYLDODECYL OLIVATE

4.3

A gentle, olive-derived emollient that hydrates without clogging pores, ideal for sensitive and oily skin types.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Octyldodecyl PCA

Octyldodecyl PCA

4.0

A gentle, non-greasy emollient that helps soften skin and improve the texture of moisturizing products.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Ricinoleate

OCTYLDODECYL RICINOLEATE

4.0

A gentle, non-greasy emollient that softens skin and improves product texture without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Safflowerate

OCTYLDODECYL SAFFLOWERATE

4.3

A lightweight, plant-based emollient that softens skin without clogging pores, ideal for oily and combination skin types.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Stearate

Octyldodecyl Stearate

4.0

A lightweight, non-greasy emollient that improves product texture and skin feel with a very low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

Octyldodecyl Stearoyl Stearate

Octyldodecyl Stearoyl Stearate

4.0

A reliable, lightweight emollient that softens skin without clogging pores, commonly used to improve product texture.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Antistatic Agent

Octyldodecyltrimonium Chloride

Octyldodecyltrimonium Chloride

3.8

A synthetic conditioning agent that reduces static and improves manageability, but may cause irritation for sensitive scalps.

Irritation

moderate

Source

synthetic

beautyskincarehaircare
Read ingredient review

Preservative

Octylisothiazolinone

Octylisothiazolinone

3.5

Octylisothiazolinone is an effective preservative but can be a skin sensitizer, so it's mainly restricted to rinse-off formulas.

Irritation

moderate

Source

synthetic

beautyskincarepreservative
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Fragrance Ingredient

Octylphthalide

OCTYLPHTHALIDE

3.5

Octylphthalide is a synthetic fragrance ingredient that adds a warm, herbal scent but may cause irritation in sensitive individuals.

Irritation

moderate

Source

synthetic

beautyskincarefragrance
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Soothing Agent

Odontella Aurita Extract

Odontella Aurita Extract

4.0

A gentle marine extract that helps calm and hydrate the skin, with early research suggesting anti-inflammatory benefits.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Emollient

Odontella Aurita Oil

Odontella Aurita Oil

4.0

A gentle, marine-derived oil that hydrates and protects skin with omega fatty acids and antioxidants, suitable for most skin types.

Irritation

low

Source

natural

beautyskincareemollient
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Soothing agent

Odorikosou Extract

Odorikosou Ekisu

3.5

A gentle botanical extract with potential soothing and antioxidant benefits, but research is limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Emollient

Oenocarpus Bataua Acid

Oenocarpus Bataua Acid

4.0

A gentle, plant-derived fatty acid that helps soften and condition skin without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

Oenothera Tetraptera Leaf Extract

Oenothera Tetraptera Leaf Extract

3.8

A gentle, plant-based antioxidant extract that may help calm skin and fight free radical damage, though research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Humectant

Okra Fruit Extract

Hibiscus Esculentus Fruit Extract

4.0

Okra Fruit Extract is a gentle, hydrating ingredient that forms a light film on skin to help lock in moisture and calm irritation.

Irritation

low

Source

natural

beautyskincarehumectant
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Humectant

Okra Seed Extract

Hibiscus Esculentus Seed Extract

3.8

Okra Seed Extract is a gentle, hydrating ingredient that helps attract moisture to the skin, but research on its benefits is still emerging.

Irritation

low

Source

natural

beautyskincarehumectant
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Anti-cavity agent

Olaflur

OLAFLUR

4.0

Olaflur is a well-studied fluoride ingredient that helps prevent tooth decay by strengthening enamel and reducing acid damage.

Irritation

low

Source

synthetic

beautyoral careanti-cavity
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Emollient

Olax Dissitiflora Root Oil

Olax Dissitiflora Root Oil

3.5

A gentle, plant-based oil with limited research but promising traditional use for soothing and moisturizing the skin.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

Old Man Saltbush Extract

Atriplex nummularia extract

4.0

A gentle, antioxidant-rich plant extract that helps shield skin from environmental stress, though research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Oldenlandia Diffusa Root Extract

OLDENLANDIA DIFFUSA ROOT EXTRACT

3.8

A gentle botanical extract with antioxidant potential, best known for its traditional use in herbal medicine, but clinical skincare data is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Oldhamii Blueberry Fruit Extract

VACCINIUM OLDHAMII FRUIT EXTRACT

4.0

A gentle, antioxidant-rich fruit extract that helps protect skin from environmental stress and supports a healthy-looking complexion.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antistatic Agent

Olealkonium Chloride

Olealkonium Chloride

3.5

Olealkonium Chloride is a mild conditioning agent that helps reduce static and improve manageability, but it can be irritating for sensitive skin or eyes at higher concentrations.

Irritation

moderate

Source

synthetic

beautyskincarehaircare
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Skin Conditioning Agent

Oleamide

Oleamide

3.8

Oleamide helps soften and condition skin and hair, but it's not a standout ingredient and is rarely the star of a formula.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Surfactant

Oleamide DEA

OLEAMIDE DEA

3.0

A synthetic foam booster that can improve texture but may contain impurities linked to health concerns; many brands now avoid it.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Surfactant

Oleamide DIPA

OLEAMIDE DIPA

3.5

Oleamide DIPA helps create rich lather in cleansers but may cause irritation for sensitive skin types.

Irritation

moderate

Source

synthetic

beautyskincarecleansing
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