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 2,268
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

Jojoba Esters

JOJOBA ESTERS

4.5

Jojoba Esters are a gentle, plant-based emollient that mimics the skin's natural sebum, making it an excellent moisturizer for most skin types, especially oily and acne-prone skin.

Irritation

low

Source

natural

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Emollient

Jojoba Oil Amino Complex

JOJOBA SEED OIL AMINOPROPANEDIOL AMIDES/ESTERS

4.0

A gentle, semi-synthetic jojoba derivative that provides silky skin feel and conditioning without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Jojoba Oil Ester Blend

JOJOBA OIL/CAPRYLIC/CAPRIC TRIGLYCERIDE ESTERS

4.3

A gentle, non-greasy emollient that mimics skin's natural oils and improves product texture without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Jojoba Seed Extract

SIMMONDSIA CHINENSIS SEED EXTRACT

4.5

Jojoba Seed Extract is a gentle, skin-identical emollient that hydrates without clogging pores, making it a safe choice for most skin types.

Irritation

low

Source

natural

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Emollient

Jojoba Wax

SIMMONDSIA CHINENSIS SEED WAX

4.5

Jojoba wax is a gentle, plant-based emollient that mimics skin's natural oils, making it ideal for dry or sensitive skin.

Irritation

low

Source

natural

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Emollient

Jojoba-Macadamia Ester Blend

JOJOBA OIL/MACADAMIA SEED OIL ESTERS

4.5

A gentle, plant-derived emollient that mimics skin's natural oils, making it ideal for dry or sensitive skin.

Irritation

low

Source

natural

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Emollient

Jojoba-Macadamia Phytosteryl Esters

JOJOBA OIL/MACADAMIA SEED OIL PHYTOSTERYL ESTERS

4.5

A gentle, plant-based emollient that feels silky on skin and helps reinforce the moisture barrier without clogging pores.

Irritation

low

Source

natural

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Emollient

Kangaroo Apple Seed Oil

Solanum Aviculare Seed Oil

3.8

A gentle, plant-based emollient oil that softens skin with a light feel, though research on its unique benefits is still limited.

Irritation

low

Source

natural

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Emollient

Kiwi Seed Oil

Actinidia Chinensis Seed Oil

4.2

Kiwi seed oil is a gentle, antioxidant-rich oil that hydrates and softens skin without clogging pores, making it a great choice for most skin types.

Irritation

low

Source

natural

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Emollient

Kiwi Seed Oil Esters

KIWI SEED OIL/PALM OIL AMINOPROPANEDIOL ESTERS

4.0

A gentle, plant-derived emollient that helps soften skin without clogging pores, but its palm oil component raises sustainability questions.

Irritation

low

Source

semi-synthetic

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Emollient

Kniphofia Uvaria Seed Oil

KNIPHOFIA UVARIA SEED OIL

3.8

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

Irritation

low

Source

natural

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Emollient

Korean Acanthopanax Oil

Acanthopanax Koreanum Oil

3.8

A gentle, antioxidant-rich oil that helps soothe and moisturize skin, but research on its specific benefits is still limited.

Irritation

low

Source

natural

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Emollient

Kukui Nut Oil

Aleurites Moluccanus Seed Oil

4.3

Kukui nut oil is a gentle, non-greasy plant oil that hydrates and softens skin without clogging pores, making it a good choice for dry or sensitive skin.

Irritation

low

Source

natural

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Emollient

Lactic Acid Monoglycerides

MONOGLYCERIDES LACTATE

4.0

A gentle, non-irritating moisturizing ingredient that helps soften and condition the skin without the potential sting of pure lactic acid.

Irritation

low

Source

semi-synthetic

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Emollient

Lactis Lipida

Lactis Lipida

4.0

A gentle, milk-derived lipid blend that helps soften and condition the skin, ideal for dry or sensitive types.

Irritation

low

Source

natural

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Skin-identical ingredient

Lactoyl Phytosphingosine

Lactoyl Phytosphingosine

4.2

A gentle, skin-identical lipid that strengthens the moisture barrier and calms irritation without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Laneth-10 Acetate

LANETH-10 ACETATE

3.5

A gentle, lanolin-derived emollient that softens skin without heavy greasiness, but may not suit those with lanolin allergies.

Irritation

low

Source

semi-synthetic

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Emollient

Laneth-5

LANETH-5

4.0

Laneth-5 is a gentle, lanolin-derived ingredient that helps soften skin and stabilize formulas, but those with wool allergies should patch-test first.

Irritation

low

Source

semi-synthetic

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Emollient

Laneth-75

Laneth-75

4.0

A gentle, water-soluble lanolin derivative that moisturizes without the heavy, greasy feel of traditional lanolin.

Irritation

low

Source

semi-synthetic

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Emollient

Lanolin

LANOLIN

4.0

Lanolin is a time-tested moisturizer that mimics skin's natural oils, but it can be comedogenic for some and is not suitable for those with wool allergies.

Irritation

low

Source

natural

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Emollient

Lanolin Linoleate

LANOLIN LINOLEATE

4.0

A gentle, lanolin-based emollient that helps soften and condition skin without the heavy feel of pure lanolin.

Irritation

low

Source

semi-synthetic

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Emollient

Lanolin Oil Ethoxylate

PPG-40-PEG-60 Lanolin Oil

3.8

A gentle, modified lanolin oil that moisturizes and helps blend water and oil in formulas, but may not suit those with wool allergies.

Irritation

low

Source

semi-synthetic

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Emollient

Lanolin Ricinoleate

LANOLIN RICINOLEATE

4.0

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

Irritation

low

Source

semi-synthetic

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Emollient

Lanolin Wax

LANOLIN CERA

4.0

A rich, protective emollient derived from sheep's wool that locks in moisture but may clog pores for some.

Irritation

low

Source

natural

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Skin Conditioning Agent

Lanosterol

Lanosterol

4.0

Lanosterol is a skin-friendly sterol that supports the skin barrier and helps keep moisture in, making it a gentle addition to moisturizing products.

Irritation

low

Source

natural

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Emollient

Lappula Squarrosa Seed Oil

Lappula Squarrosa Seed Oil

3.8

A gentle, fatty-acid-rich seed oil that helps soften and condition skin, though research on its specific benefits is still limited.

Irritation

low

Source

natural

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Emollient

Lard

Adeps Suillus

3.5

Lard is a traditional emollient that softens skin but may clog pores for some people.

Irritation

low

Source

natural

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Emollient

Laureth-2 Benzoate

LAURETH-2 BENZOATE

3.8

A synthetic emollient that helps products feel silky and spread easily, with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emollient

Laureth-2 Ethylhexanoate

LAURETH-2 ETHYLHEXANOATE

4.0

A lightweight synthetic emollient that improves product texture and skin feel without clogging pores.

Irritation

low

Source

synthetic

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Emollient

Lauryl Acetate

Lauryl Acetate

3.8

A gentle synthetic emollient that softens skin and helps carry fragrance, but offers no active skincare benefits.

Irritation

low

Source

synthetic

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Emollient

Lauryl Alcohol

LAURYL ALCOHOL

4.0

A gentle fatty alcohol that softens skin and helps products feel smooth without clogging pores.

Irritation

low

Source

natural

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Emollient

Lauryl Behenate

Lauryl Behenate

4.0

A gentle, non-greasy emollient that helps soften and smooth the skin with a low risk of irritation or clogged pores.

Irritation

low

Source

synthetic

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Emollient

Lauryl Cocoate

Lauryl Cocoate

4.3

A lightweight, non-greasy emollient derived from coconut oil and lauryl alcohol, ideal for dry or sensitive skin.

Irritation

low

Source

natural

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Emollient

Lauryl Cupuaçu Seedate

Lauryl Theobroma Grandiflorum Seedate

4.0

A gentle, plant-derived emollient that helps skin feel soft and smooth without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Lauryl Ethylhexanoate

Lauryl Ethylhexanoate

4.0

A lightweight, non-greasy emollient that helps soften skin and improve product texture without clogging pores.

Irritation

low

Source

synthetic

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Skin Conditioning Agent

Lauryl Glycol

Lauryl Glycol

4.0

Lauryl Glycol is a gentle skin-conditioning ingredient that helps improve product texture and feel without common irritation.

Irritation

low

Source

synthetic

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Emollient

Lauryl Isostearate

Lauryl Isostearate

4.0

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

Irritation

low

Source

synthetic

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Emollient

Lauryl Lactate

Lauryl Lactate

4.0

Lauryl Lactate is a gentle, non-greasy emollient that helps skin feel soft and smooth, making it a great choice for lightweight moisturizers.

Irritation

low

Source

semi-synthetic

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Emollient

Lauryl Lactyl Lactate

Lauryl Lactyl Lactate

4.0

A lightweight, non-greasy emollient derived from lactic acid that softens skin without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Lauryl Laurate

Lauryl Laurate

4.3

A lightweight, non-greasy emollient that helps skin feel soft and smooth, with a very low risk of irritation or clogged pores.

Irritation

low

Source

natural

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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

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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

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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

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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

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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

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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

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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

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Emollient

Lecythis Minor Seed Oil

Lecythis Minor Seed Oil

4.0

A gentle, nourishing plant oil that softens skin without feeling heavy, though research on its specific benefits is still limited.

Irritation

low

Source

natural

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Emollient

Lemon Peel Wax

CITRUS LIMON PEEL WAX

4.0

A gentle, plant-based wax from lemon peels that helps thicken and stabilize creams and balms without common irritation.

Irritation

low

Source

natural

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Emollient

Lignoceryl Erucate

LIGNOCERYL ERUCATE

4.0

A gentle wax ester that softens skin and reinforces the moisture barrier without clogging pores.

Irritation

low

Source

semi-synthetic

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Emollient

Lime Seed Oil

Citrus Aurantifolia Seed Oil

3.8

A gentle, antioxidant-rich oil that hydrates and soothes skin without clogging pores.

Irritation

low

Source

natural

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Emollient

Lime Seed Unsaponifiables

Citrus Aurantifolia Seed Oil Unsaponifiables

4.0

A gentle, plant-derived emollient that helps strengthen the skin barrier and offers antioxidant protection without clogging pores.

Irritation

low

Source

natural

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Emollient

Linden Blossom Oil

Tilia Cordata Oil

3.8

A gentle, fragrant oil that softens skin and provides antioxidant benefits, but research on its specific effects is limited.

Irritation

low

Source

natural

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Emollient

Lingonberry Seed Oil

VACCINIUM VITIS-IDAEA SEED OIL

4.0

A lightweight, antioxidant-rich oil that helps moisturize and protect the skin without clogging pores.

Irritation

low

Source

natural

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Emollient

Linoleamide

Linoleamide

3.5

Linoleamide is a gentle fatty acid derivative that helps soften and condition skin, but research on its specific benefits is limited compared to its parent compound, linoleic acid.

Irritation

low

Source

semi-synthetic

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