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

Lauryl Methicone

Lauryl Methicone

4.0

A gentle silicone that makes products feel silky and spread easily, with very low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

beautyskincarehaircare
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Emulsifier

Lauryl Methicone Copolyol

Lauryl Methicone Copolyol

4.0

A gentle silicone emulsifier that helps create smooth, stable formulas without heavy or greasy feel.

Irritation

low

Source

synthetic

beautyskincareemulsifier
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Surfactant

Lauryl Methylglucamide

Lauryl Methylglucamide

4.3

A gentle, biodegradable surfactant that cleanses effectively while being kind to sensitive skin and the environment.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
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Emollient

Lauryl Myristate

Lauryl Myristate

3.8

Lauryl Myristate is a reliable emollient that softens skin and improves product feel, but it may clog pores for acne-prone individuals.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

Lauryl Oleate

Lauryl Oleate

3.8

Lauryl Oleate is a gentle emollient that softens skin but may be moderately pore-clogging for acne-prone individuals.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Surfactant

Lauryl Olivate

Lauryl Olivate

4.5

A mild, olive-derived cleansing agent that cleans without stripping the skin, making it ideal for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Preservative

Lauryl P-Cresol Ketoxime

LAURYL P-CRESOL KETOXIME

3.5

A synthetic preservative booster that helps keep products fresh but may cause irritation for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarepreservative
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Emollient

Lauryl Palmitate

Lauryl Palmitate

4.0

Lauryl Palmitate is a gentle emollient that softens skin and improves product feel, with low irritation and comedogenic risk.

Irritation

low

Source

synthetic

beautyskincareemollient
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Surfactant

Lauryl PCA

Lauryl PCA

4.0

Lauryl PCA is a mild, skin-friendly surfactant that cleanses without stripping the skin's natural moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
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Emulsifier

Lauryl PEG-8 Dimethicone

LAURYL PEG-8 DIMETHICONE

4.0

A gentle silicone emulsifier that helps products spread smoothly and feel silky, with a good safety profile for most skin types.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Emollient

Lauryl Phenylpropyl Methicone

Lauryl Phenylpropyl Methicone

4.0

A gentle silicone that smooths skin and hair without a heavy or greasy feel, but may not suit those avoiding silicones.

Irritation

low

Source

synthetic

beautyskincarehaircare
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Surfactant

Lauryl Phosphate

Lauryl Phosphate

3.5

An effective cleansing agent that can be drying or irritating for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Skin Conditioning Agent

Lauryl Pyrrolidone

Lauryl Pyrrolidone

3.8

Lauryl Pyrrolidone is a synthetic ingredient that helps other actives absorb better while smoothing the skin, but its penetration-enhancing effect means it should be used with care in formulations.

Irritation

low

Source

synthetic

beautyskincareconditioning agent
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Film Former

Lauryl Silicone Crosspolymer Blend

LAURYL POLYDIMETHYLSILOXYETHYL DIMETHICONE/BIS-VINYLDIMETHICONE CROSSPOLYMER

3.8

A silicone crosspolymer that helps products spread smoothly, feel silky, and stay put without clogging pores.

Irritation

low

Source

synthetic

beautyskincarehaircare
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Emollient

Lauryl Stearate

Lauryl Stearate

4.0

Lauryl Stearate is a gentle emollient that softens skin and improves product feel, with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Surfactant

Lauryl Sultaine

Lauryl Sultaine

4.0

A gentle, sulfate-free surfactant that creates a rich lather and is well-tolerated by most skin types.

Irritation

low

Source

synthetic

beautyskincarecleanser
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Emollient

Lauryl Trimethicone

Lauryl Trimethicone

4.0

A gentle silicone that makes skin feel smooth and helps products glide on without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
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Emollient

Lauryl/Myristyl Benzoate

Lauryl/Myristyl Benzoate

4.2

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

Irritation

low

Source

synthetic

beautyskincareemollient
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Antioxidant

Lauryl/Tridecyl Glyceryl Ascorbate

3-LAURYL/TRIDECYLGLYCERYL ASCORBATE

4.3

A gentle, fat-soluble vitamin C derivative that brightens skin and fights free radicals without the sting of pure ascorbic acid.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
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Surfactant

Laurylamine Dipropylenediamine

Laurylamine Dipropylenediamine

3.5

An effective cleansing and antistatic agent, but may cause irritation for sensitive skin types, especially at higher concentrations.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
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Preservative

Laurylpyridinium Chloride

LAURYLPYRIDINIUM CHLORIDE

3.5

An effective preservative for rinse-off products, but can be irritating to sensitive skin or eyes at higher concentrations.

Irritation

moderate

Source

synthetic

beautyskincarepreservative
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Antistatic Agent

Lautrimonium Bromide

LAURTRIMONIUM BROMIDE

3.5

An effective antistatic and conditioning agent, but can be irritating for sensitive scalps or skin at higher concentrations.

Irritation

moderate

Source

synthetic

beautyskincarehaircare
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Preservative

Lautrimonium Trichlorophenoxide

LAURTRIMONIUM TRICHLOROPHENOXIDE

3.5

An effective preservative but may cause irritation in sensitive skin, especially at higher concentrations.

Irritation

moderate

Source

synthetic

beautyskincarepreservative
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Absorbent

Lava Extract

Lava Extract

3.5

Lava extract is a mineral-rich ingredient that may help absorb excess oil and provide trace minerals, but research on its skincare benefits is limited.

Irritation

low

Source

natural

beautyskincareabsorbent
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Absorbent

Lava Powder

Lava Powder

3.8

Lava powder is a natural mineral powder that helps absorb excess oil and gently exfoliate skin, but it can be abrasive for sensitive skin.

Irritation

moderate

Source

natural

beautyskincareexfoliantabsorbent
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Fragrance

Lavandin Abrial Herb Oil

LAVANDULA HYBRIDA ABRIAL HERB OIL

3.8

Lavandin Abrial Herb Oil adds a pleasant lavender-like scent to products, but may cause irritation for sensitive skin due to its essential oil content.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Soothing Agent

Lavandin Extract

Lavandula Intermedia Extract

3.8

Lavandin extract can offer mild soothing benefits and a pleasant scent, but it may cause irritation for sensitive skin due to its natural fragrance compounds.

Irritation

moderate

Source

natural

beautyskincaresoothing agent
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Fragrance

Lavandin Grosso Herb Extract

LAVANDULA HYBRIDA GROSSO HERB EXTRACT

3.8

A fragrant botanical extract with mild soothing and antimicrobial benefits, but may irritate sensitive skin due to its essential oil content.

Irritation

moderate

Source

natural

beautyskincarebotanical extract
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Fragrance

Lavandin Grosso Oil

LAVANDULA HYBRIDA GROSSO HERB OIL

3.8

Lavandin Grosso Oil adds a fresh, herbal scent to products but can be irritating for sensitive skin due to its high camphor content.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Soothing Agent

Lavandin Herb Extract

LAVANDULA HYBRIDA HERB EXTRACT

4.0

Lavandin herb extract offers gentle soothing and a pleasant scent, but its benefits are mostly aromatic and calming rather than transformative.

Irritation

low

Source

natural

beautyskincaresoothing
Read ingredient review

Fragrance

Lavandin Oil

LAVANDULA INTERMEDIA FLOWER/LEAF/STEM OIL

3.8

Lavandin oil adds a pleasant lavender-like scent to products but can be irritating for sensitive skin due to its high camphor content.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Fragrance

Lavandulyl Acetate

LAVANDULYL ACETATE

3.8

Lavandulyl acetate adds a gentle lavender-like scent to products and may offer mild skin soothing, but it is primarily a fragrance ingredient with limited direct skincare benefits.

Irritation

low

Source

natural

beautyskincarefragrance
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Antioxidant

Lavender Callus Extract

LAVANDULA ANGUSTIFOLIA CALLUS EXTRACT

3.8

A gentle, lab-grown lavender extract that may help protect skin from environmental stress, though research is still early.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Fragrance

Lavender Extract

Lavandula Angustifolia Herb Extract

3.8

Lavender Extract adds a pleasant scent and mild antioxidant benefits, but can be irritating for sensitive skin and is not a proven treatment for skin conditions.

Irritation

moderate

Source

natural

beautyskincarebotanical
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Fragrance

Lavender Flower Extract

Lavandula Officinalis Flower/Extract

3.8

Lavender flower extract adds a pleasant scent and may offer mild soothing effects, but it can be irritating for sensitive skin and has limited proven skincare benefits.

Irritation

moderate

Source

natural

beautyskincarebotanical extract
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Exfoliant

Lavender Flower Powder

Lavandula Angustifolia Flower Powder

3.5

Lavender flower powder adds gentle physical exfoliation and a calming scent, but its coarse particles and potential for irritation mean it's best suited for rinse-off products and not for sensitive or acne-prone skin.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Fragrance

Lavender Flower Water

LAVANDULA HYBRIDA FLOWER WATER

3.8

Lavender flower water is a mild, aromatic hydrosol that can add a pleasant scent and a touch of soothing hydration to skincare, but its benefits are subtle and it may cause irritation for sensitive skin.

Irritation

low

Source

natural

beautyskincarefragrance
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Emollient

Lavender Flower Wax

Lavandula Angustifolia Flower Wax

4.0

A gentle, plant-based wax that adds richness and a smooth feel to balms and creams without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
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Fragrance

Lavender Flower-Leaf-Stem Extract

LAVANDULA ANGUSTIFOLIA FLOWER/LEAF/STEM EXTRACT

3.8

Lavender extract adds a pleasant scent and mild soothing feel to products, but can be irritating for sensitive or reactive skin.

Irritation

moderate

Source

natural

beautyskincarebotanical
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Fragrance component

Lavender Flower/Leaf/Stem Juice

LAVANDULA ANGUSTIFOLIA FLOWER/LEAF/STEM JUICE

3.8

A gentle, aromatic botanical water that adds a subtle lavender scent and a touch of soothing potential to skincare formulas.

Irritation

low

Source

natural

beautyskincarebotanical
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Soothing Agent

Lavender Flower/Leaf/Stem Water

LAVANDULA ANGUSTIFOLIA FLOWER/LEAF/STEM WATER

4.0

Lavender water is a gentle, aromatic hydrosol that can soothe and refresh skin, but its benefits are mostly anecdotal and it may cause irritation in sensitive individuals due to trace essential oil components.

Irritation

low

Source

natural

beautyskincaresoothing
Read ingredient review

Fragrance

Lavender Hybrid Flower Extract

LAVANDULA HYBRIDA FLOWER EXTRACT

3.8

A gentle botanical extract with a pleasant lavender scent, but may irritate sensitive skin due to natural fragrance compounds.

Irritation

moderate

Source

natural

beautyskincarebotanical
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Soothing agent

Lavender Hybrid Herb Extract

LAVANDULA HYBRIDA ABRIAL HERB EXTRACT

4.0

A gentle botanical extract that may help calm skin and provide antioxidant support, but its fragrance can be a concern for sensitive noses.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Lavender Lace Flower Extract

Odontioda Lavender Lace Flower Extract

3.5

A gentle, antioxidant-rich orchid extract that may help calm skin and fight free radicals, but research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Lavender Leaf Cell Extract

LAVANDULA ANGUSTIFOLIA LEAF CELL EXTRACT

3.8

A gentle, lab-grown lavender extract that may help protect skin from environmental stress, but research is still early.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Soothing Agent

Lavender Leaf Extract

Lavandula Latifolia Herb Extract

3.8

A fragrant lavender leaf extract that can soothe skin and fight free radicals, but may cause irritation in sensitive individuals due to its natural essential oil content.

Irritation

moderate

Source

natural

beautyskincarebotanical
Read ingredient review