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

Humectant

Sweet Almond Fruit Water

Prunus Amygdalus Dulcis Fruit Water

4.0

A gentle, hydrating water alternative from almonds that soothes skin without the oiliness of almond oil.

Irritation

low

Source

natural

beautyskincarehumectant
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Antioxidant

Sweet Almond Leaf Cell Extract

Prunus Amygdalus Dulcis (Sweet Almond) Leaf Cell Extract

3.8

A gentle, plant-derived antioxidant that may help protect skin from environmental stress, though research is still emerging.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Emollient

Sweet Almond Oil

Prunus Amygdalus Dulcis (Sweet Almond) Oil

4.5

A gentle, nourishing oil that softens skin without clogging pores, making it a staple for dry or sensitive skin types.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Sweet Almond Oil Decyl Esters

Sweet Almond Oil Decyl Esters

4.0

A lightweight, non-greasy emollient derived from sweet almond oil that softens skin without clogging pores.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Emulsifier

Sweet Almond Oil PEG-8 Esters

SWEET ALMOND OIL PEG-8 ESTERS

4.0

A gentle, semi-synthetic emulsifier that helps blend oil and water in creams and lotions while providing light skin conditioning.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emollient

Sweet Almond Oil Unsaponifiables

Prunus Amygdalus Dulcis Oil Unsaponifiables

4.0

A gentle, non-greasy emollient derived from sweet almond oil that helps soften and soothe skin without clogging pores.

Irritation

low

Source

natural

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Emollient

Sweet Almond Oleosomes

Prunus Amygdalus Dulcis Oleosomes

4.3

A gentle, lipid-rich ingredient that hydrates and softens skin without the greasy feel of traditional oils.

Irritation

low

Source

natural

beautyskincareemollient
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Humectant

Sweet Almond Protein

PRUNUS AMYGDALUS DULCIS PROTEIN

4.0

A gentle, plant-based protein that helps hair and skin feel soft and hydrated without heavy residue.

Irritation

low

Source

natural

beautyskincarehumectantfilm-former
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Exfoliant

Sweet Almond Seed

Prunus Amygdalus Dulcis (Sweet Almond) Seed

4.0

Sweet Almond Seed provides gentle physical exfoliation and a touch of nourishment, but its texture can vary and it may not suit very sensitive skin.

Irritation

low

Source

natural

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Soothing Agent

Sweet Almond Seed Extract

Prunus Amygdalus Dulcis Seed Extract

4.0

A gentle, antioxidant-rich extract that helps soothe and moisturize skin, but its benefits are best supported by traditional use rather than extensive clinical studies.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Exfoliant

Sweet Almond Seed Meal

Prunus Amygdalus Dulcis Seed Meal

4.0

A gentle, natural exfoliant that buffs away dead skin cells without harsh microbeads, but may feel gritty for sensitive skin.

Irritation

low

Source

natural

beautyskincareexfoliant
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Antioxidant

Sweet Almond Seedcake Extract

PRUNUS AMYGDALUS DULCIS (SWEET ALMOND) SEEDCAKE EXTRACT

4.0

A gentle, antioxidant-rich extract from almond processing byproducts that helps soothe and condition the skin.

Irritation

low

Source

natural

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Antioxidant

Sweet Almond Seedcoat Extract

Prunus Amygdalus Dulcis Seedcoat Extract

4.0

A gentle, antioxidant-rich extract that helps protect skin from environmental stress while offering mild soothing benefits.

Irritation

low

Source

natural

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Exfoliant

Sweet Almond Shell Extract

Prunus Amygdalus Dulcis (Sweet Almond) Shell Extract

3.8

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

Irritation

low

Source

natural

beautyskincareexfoliant
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Exfoliant

Sweet Almond Shell Powder

Prunus Amygdalus Dulcis Shell Powder

3.8

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

Irritation

low

Source

natural

beautyskincareexfoliant
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Antioxidant

Sweet Briar Extract

Rosa Eglantaria Flower/Leaf/Stem Extract

4.0

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

Irritation

low

Source

natural

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Emollient

Sweet Briar Seed Oil

Rosa Rubiginosa Seed Oil

4.5

A lightweight, non-greasy oil rich in linoleic acid and vitamin C that helps support skin barrier function and may improve the appearance of uneven texture.

Irritation

low

Source

natural

beautyskincareemollient
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Soothing Agent

Sweet Cicely Extract

Myrrhis Odorata Extract

3.8

A gentle botanical extract with antioxidant and soothing potential, though research on its cosmetic benefits is still emerging.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing Agent

Sweet Clover Extract

Melilotus Officinalis Herb Extract

3.8

A gentle botanical extract with soothing potential, but limited clinical evidence for specific skincare benefits.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Soothing Agent

Sweet Clover Flower Extract

Melilotus Officinalis Flower Extract

3.8

A gentle botanical extract that may help calm redness and support microcirculation, but research is still early.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Sweet Clover Flower Water

MELILOTUS OFFICINALIS FLOWER WATER

3.8

A mild, floral water that may help soothe and lightly tone the skin, but scientific evidence for its benefits is limited.

Irritation

low

Source

natural

beautyskincaresoothing
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Soothing Agent

Sweet Clover Leaf Extract

Melilotus Officinalis Leaf Extract

3.8

A gentle botanical extract 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

Sweet Fennel Fruit Extract

FOENICULUM VULGARE DULCE FRUIT EXTRACT

4.0

A gentle botanical extract that may help calm skin and provide antioxidant support, but research is mostly lab-based.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Fragrance

Sweet Fennel Fruit Oil

FOENICULUM VULGARE DULCE FRUIT OIL

4.0

Sweet Fennel Fruit Oil adds a pleasant scent and antioxidant benefits, but can be irritating for sensitive skin if used undiluted.

Irritation

moderate

Source

natural

beautyskincareessential oil
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Antioxidant

Sweet Flag Callus Extract

Acorus Calamus Callus Culture Extract

3.8

A lab-grown plant extract that may help calm skin and fight free radicals, but research is still early.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Soothing Agent

Sweet Flag Root Extract

Acorus Gramineus Root/Stem Extract

3.8

A gentle botanical extract with antioxidant and soothing potential, but research is still early and mostly lab-based.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Sweet Gale Extract

MYRICA GALE FLOWER/FRUIT/LEAF/TWIG EXTRACT

3.8

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

Irritation

low

Source

natural

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Soothing Agent

Sweet Goldenrod Extract

Solidago Odora Extract

3.8

A gentle botanical extract with antioxidant and soothing potential, though research is limited compared to more established plant extracts.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing Agent

Sweet Grass Extract

HIEROCHLOE ODORATA EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sweet Orange Callus Extract

CITRUS AURANTIUM DULCIS CALLUS CULTURE EXTRACT

4.0

A gentle, lab-grown plant extract that may help protect skin from environmental stress, though human studies are limited.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Fragrance

Sweet Orange Flower Extract

CITRUS AURANTIUM DULCIS FLOWER

3.8

A gentle, aromatic flower extract that adds a light citrus scent and mild soothing benefits to skincare formulas.

Irritation

low

Source

natural

beautyskincarefragrance
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Fragrance

Sweet Orange Flower Oil

CITRUS AURANTIUM DULCIS FLOWER OIL

3.8

A fragrant, gentle essential oil that adds a pleasant scent and mild soothing benefits, but can irritate sensitive skin if used undiluted.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Emollient

Sweet Orange Flower Wax

CITRUS AURANTIUM DULCIS FLOWER WAX

4.0

A gentle, natural wax that adds a silky feel and light floral scent to skincare products, but may cause sensitivity in those allergic to citrus.

Irritation

low

Source

natural

beautyskincareemollient
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Exfoliant

Sweet Orange Flower-Leaf-Stem Powder

Citrus Aurantium Dulcis Flower/Leaf/Stem Powder

3.5

A gentle, natural powdered exfoliant from orange tree parts that adds mild texture and a light citrus scent to skincare products.

Irritation

low

Source

natural

beautyskincareexfoliant
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Antioxidant

Sweet Orange Fruit Extract

CITRUS AURANTIUM DULCIS FRUIT EXTRACT

4.0

A gentle, antioxidant-rich fruit extract that can brighten skin and provide a light citrus scent, but may cause sensitivity in very rare cases.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sweet Orange Leaf Extract

CITRUS AURANTIUM DULCIS LEAF EXTRACT

3.8

A gentle plant extract that provides antioxidant protection and a subtle tightening feel, but research on its specific skin benefits is still limited.

Irritation

low

Source

natural

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Fragrance

Sweet Orange Oil

CITRUS AURANTIUM DULCIS OIL

3.8

Sweet Orange Oil adds a bright citrus scent and mild astringent feel, but can irritate sensitive skin and increase sun sensitivity.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Antioxidant

Sweet Orange Peel Extract

CITRUS AURANTIUM DULCIS PEEL EXTRACT

4.0

A fragrant, antioxidant-rich extract that can help protect skin from environmental stress, but may irritate sensitive skin due to natural citrus compounds.

Irritation

moderate

Source

natural

beautyskincareantioxidant
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Fragrance

Sweet Orange Peel Oil

Citrus Sinensis Peel Oil Expressed

3.8

Sweet Orange Peel Oil adds a fresh citrus scent to products but can be irritating for sensitive skin and may increase sun sensitivity.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Emollient

Sweet Orange Peel Wax

CITRUS AURANTIUM DULCIS PEEL WAX

4.0

A gentle, plant-based wax that helps lock in moisture and gives products a smooth, non-greasy feel.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

Sweet Orange Seed Extract

Citrus Aurantium Dulcis Seed Extract

4.0

A gentle antioxidant extract from sweet orange seeds that helps protect skin from environmental stress without causing irritation.

Irritation

low

Source

natural

beautyskincareantioxidant
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Emollient

Sweet Orange Seed Oil

CITRUS AURANTIUM DULCIS SEED OIL

4.0

A gentle, antioxidant-rich oil that hydrates without clogging pores, ideal for normal to dry skin types.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Sweet Orange Seed Unsaponifiables

CITRUS AURANTIUM DULCIS SEED OIL UNSAPONIFIABLES

4.0

A gentle, lipid-rich fraction of sweet orange seed oil that helps soften and condition skin without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

Sweet Pea Flower Extract

LATHYRUS ODORATUS FLOWER EXTRACT

3.5

A gentle floral extract with potential antioxidant and soothing benefits, but research on its efficacy in skincare is limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sweet Pea Leaf Extract

LATHYRUS ODORATUS LEAF EXTRACT

3.5

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sweet Pea Seed Extract

LATHYRUS ODORATUS SEED EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sweet Potato Ferment Extract

SACCHAROMYCES/IPOMOEA BATATAS ROOT FERMENT LEES EXTRACT

4.0

A gentle, antioxidant-rich fermented ingredient that may help soothe and protect skin, though research is still emerging.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Sweet Potato Ferment Filtrate

SACCHAROMYCES/IPOMOEA BATATAS ROOT FERMENT FILTRATE EXTRACT

4.0

A gentle, fermented botanical extract that may help calm skin and provide antioxidant support, though research is still emerging.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Sweet Potato Leaf Extract

Ipomoea Batatas Leaf Extract

3.8

A gentle, antioxidant-rich plant extract that may help calm skin and protect against environmental stress, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sweet Potato Leaf/Stem Extract

Ipomoea Batatas Leaf/Stem Extract

4.0

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sweet Potato Leaf/Stem Powder

Ipomoea Batatas Leaf/Stem Powder

3.8

A gentle, plant-based powder that may offer antioxidant benefits and mild exfoliation, but research on its cosmetic use is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sweet Potato Root Extract

Ipomoea Batatas Root Lees Extract

4.0

A gentle, antioxidant-rich extract from sweet potatoes that helps protect skin from environmental stress and supports a calm complexion.

Irritation

low

Source

natural

beautyskincareantioxidant
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Humectant

Sweet Potato Root Juice

Ipomoea Batatas Root Juice

4.0

Sweet Potato Root Juice is a gentle, hydrating ingredient that helps soothe and moisturize skin, with antioxidant benefits from natural vitamins and minerals.

Irritation

low

Source

natural

beautyskincarehumectant
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Soothing Agent

Sweet Vernal Grass Extract

Anthoxanthum Odoratum Extract

3.8

A gentle botanical extract with antioxidant and soothing potential, but research is limited and it's primarily used for its pleasant vanilla-like scent.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Sweet Violet Callus Powder

Viola Odorata Callus Powder

3.8

A gentle, plant-based antioxidant from violet cells that may help calm and protect skin, but research is still early.

Irritation

low

Source

biotech

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Soothing Agent

Sweet Violet Extract

VIOLA ODORATA FLOWER/LEAF EXTRACT

3.8

A mild, plant-derived extract that may help calm skin and fight free radical damage, though research is still emerging.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing Agent

Sweet Violet Flower Extract

VIOLA ODORATA FLOWER EXTRACT

3.8

A mild, plant-based extract that may help calm skin and fight free radical damage, but research is limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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