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

Exfoliant

Desert Lime Fruit Powder

Citrus Glauca Fruit Powder

3.8

A gentle, natural exfoliating powder from Australian desert lime that offers mild antioxidant benefits and a touch of fruit-derived texture.

Irritation

low

Source

natural

beautyskincareexfoliant
Read ingredient review

Emollient

Desert Lime Seed Oil

Citrus Glauca Seed Oil

4.0

A lightweight, antioxidant-rich oil from Australian desert lime seeds that hydrates and softens skin without feeling greasy.

Irritation

low

Source

natural

beautyskincareemollient
Read ingredient review

Antioxidant

Desert Rose Callus Extract

Adenium Obesum Callus Culture Extract

3.8

A gentle, plant-derived antioxidant that may help soothe skin and fight environmental stress, though research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Desert Rose Leaf Cell Extract

ADENIUM OBESUM LEAF CELL EXTRACT

3.8

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

Irritation

low

Source

biotech

beautyskincareantioxidant
Read ingredient review

Antioxidant

Desert Willow Bark Extract

Cercidium Floridum Bark Extract

3.8

A gentle botanical extract that may help calm skin and fight free radicals, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Soothing Agent

Desmodium Adscendens Extract

Desmodium Adscendens Flower/Leaf/Stem Extract

3.8

A gentle plant extract with potential soothing and antioxidant benefits, though research is still emerging.

Irritation

low

Source

natural

beautyskincaresoothing agent
Read ingredient review

Soothing Agent

Desmodium Oldhamii Extract

Desmodium Oldhamii Extract

3.8

A gentle botanical extract with emerging research suggesting antioxidant and soothing benefits, but human skincare studies are limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
Read ingredient review

Antioxidant

Detonula Pumila Extract

Detonula Pumila Extract

3.8

A gentle marine extract that may help calm skin and fight environmental stress, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Deutzia Gracilis Extract

DEUTZIA GRACILIS LEAF/STEM EXTRACT

3.5

A gentle botanical extract with antioxidant potential, but research is limited—consider it a nice-to-have rather than a must-have ingredient.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Devil's Seaweed Extract

Laminaria Diabolica Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Film Former

Dextran

Dextran

4.0

Dextran is a gentle, sugar-derived polymer that helps products feel smooth and hydrated without clogging pores.

Irritation

low

Source

natural

beautyskincarefilm-former
Read ingredient review

Film Former

Dextran Hydroxypropyltrimonium Chloride

Dextran Hydroxypropyltrimonium Chloride

4.0

A gentle conditioning polymer that smooths hair and skin without heavy buildup, making it a good choice for fine hair or sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincarehaircare
Read ingredient review

Film Former

Dextran Sulfate

Dextran Sulfate

3.8

Dextran sulfate is a gentle film-forming ingredient that helps soothe and protect the skin, but its benefits are mostly surface-level.

Irritation

low

Source

semi-synthetic

beautyskincarefilm-former
Read ingredient review

Viscosity Controlling

Dextrin

Dextrin

4.0

Dextrin is a gentle, starch-derived ingredient that helps thicken formulas and improve product feel without common irritation.

Irritation

low

Source

natural

beautyskincaretexturizer
Read ingredient review

Texture Enhancer

Dextrin Behenate

Dextrin Behenate

4.0

A gentle, starch-based ingredient that gives products a silky, non-greasy feel and helps stabilize formulas.

Irritation

low

Source

semi-synthetic

beautyskincaretexturizer
Read ingredient review

Emulsifier

Dextrin Isostearate

DEXTRIN ISOSTEARATE

4.0

A gentle, plant-based emulsifier that improves product texture and stability with a low risk of irritation.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

Dextrin Laurate

Dextrin Laurate

4.3

A mild, effective emulsifier that helps create stable, creamy textures without common irritation.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

Dextrin Myristate

Dextrin Myristate

4.0

A mild, starch-derived emulsifier that improves product feel and stability without common irritation concerns.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
Read ingredient review

Emulsifier

Dextrin Palmitate

Dextrin Palmitate

4.0

A gentle, starch-derived ingredient that improves product feel and stability without common irritation concerns.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
Read ingredient review

Texture Enhancer

Dextrin Palmitate/Stearate

Dextrin Palmitate/Stearate

4.0

A gentle, starch-based ingredient that improves the feel and stability of products without common irritation concerns.

Irritation

low

Source

semi-synthetic

beautyskincaretexturizer
Read ingredient review

Emulsifier

Dextrin Stearate

Dextrin Stearate

4.0

A gentle, plant-based emulsifier that gives creams a silky feel without clogging pores or irritating skin.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
Read ingredient review

Emollient

DHA/DPA/Oleic/Palmitic Triglyceride

DOCOSAHEXENOIC/DOCOSAPENTENOIC/OLEIC/PALMITIC TRIGLYCERIDE

4.0

A nourishing blend of omega fatty acids that helps soften skin and strengthen the moisture barrier without feeling greasy.

Irritation

low

Source

natural

beautyskincareemollient
Read ingredient review

Emollient

Di-C12-13 Alkyl Malate

DI-C12-13 ALKYL MALATE

4.0

A lightweight, non-greasy emollient that helps products spread smoothly and leaves skin feeling soft without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Di-C12-13 Alkyl Tartrate

DI-C12-13 ALKYL TARTRATE

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Di-C12-15 Alkyl Adipate

DI-C12-15 ALKYL ADIPATE

4.0

A lightweight synthetic emollient that softens skin without clogging pores, ideal for oily or combination skin types.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Antistatic Agent

Di-C12-15 Alkyl Dimonium Chloride

DI-C12-15 ALKYL DIMONIUM CHLORIDE

3.5

A synthetic conditioning agent that reduces static and softens hair, but may cause irritation for sensitive scalps at high concentrations.

Irritation

moderate

Source

synthetic

beautyskincarehaircare
Read ingredient review

Emollient

Di-C12-15 Alkyl Fumarate

DI-C12-15 ALKYL FUMARATE

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Di-C12-15 Alkyl Maleate

DI-C12-15 ALKYL MALEATE

4.0

A lightweight, non-greasy emollient that helps products spread smoothly and leaves skin feeling soft without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Surfactant

Di-C12-15 Pareth-10 Phosphate

DI-C12-15 PARETH-10 PHOSPHATE

4.0

A gentle, phosphate-based surfactant that helps cleanse without stripping the skin, making it a good choice for sensitive skin.

Irritation

low

Source

semi-synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

Di-C12-15 Pareth-4 Phosphate

DI-C12-15 PARETH-4 PHOSPHATE

3.8

A mild synthetic surfactant that helps cleansers foam and rinse cleanly, but may be slightly drying for very sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
Read ingredient review

Surfactant

Di-C12-15 Pareth-6 Phosphate

DI-C12-15 PARETH-6 PHOSPHATE

3.8

A mild synthetic surfactant that helps cleanse without stripping, but may cause irritation in sensitive skin at high concentrations.

Irritation

moderate

Source

synthetic

beautyskincaresurfactant
Read ingredient review

Antistatic Agent

Di-C12-18 Alkyl Dimonium Chloride

DI-C12-18 ALKYL DIMONIUM CHLORIDE

3.5

A synthetic conditioner that reduces static and softens hair, but may cause irritation or clog pores in sensitive individuals.

Irritation

moderate

Source

synthetic

beautyskincarehaircare
Read ingredient review

Emollient

Di-C14-15 Alkyl Tartrate

DI-C14-15 ALKYL TARTRATE

4.0

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Antistatic Agent

Di-C14-18 Alkyl Dimonium Chloride

DI-C14-18 ALKYL DIMONIUM CHLORIDE

3.8

A synthetic conditioning agent that reduces static and softens hair, but may be too heavy for fine or oily hair and can cause irritation in sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincarehaircaresurfactant
Read ingredient review

Emollient

Di-C16-18 Alkyl Dimer Dilinoleate

DI-C16-18 ALKYL DIMER DILINOLEATE

4.0

A gentle, plant-based emollient that makes skin feel smooth and soft without clogging pores—great for sensitive or oily skin types.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
Read ingredient review

Film Former

Di-PEG-2 Soyamine IPDI

DI-PEG-2 SOYAMINE IPDI

3.5

A synthetic polymer that helps hair feel smooth and reduces frizz, but it's not a moisturizer or repair ingredient.

Irritation

low

Source

synthetic

beautyskincarehaircare
Read ingredient review

Emollient

Di-PPG-2 Myreth-10 Adipate

DI-PPG-2 MYRETH-10 ADIPATE

3.8

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

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

Emollient

Di-PPG-3 Ceteth-4 Adipate

DI-PPG-3 CETETH-4 ADIPATE

4.0

A gentle synthetic emollient that helps skincare products feel silky and spread easily without clogging pores.

Irritation

low

Source

synthetic

beautyskincareemollient
Read ingredient review

UV Filter

Di-T-Butyl Hydroxybenzylidene Camphor

DI-T-BUTYL HYDROXYBENZYLIDENE CAMPHOR

3.5

A synthetic UV filter that protects skin from sun damage, but its use is limited by regional regulations and potential environmental concerns.

Irritation

low

Source

synthetic

beautyskincaresunscreen
Read ingredient review

Surfactant

Di-TEA-Cocamide Diacetate

DI-TEA-COCAMIDE DIACETATE

3.8

A mild coconut-derived cleansing agent that helps create a rich lather without stripping the skin.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Surfactant

Di-TEA-Palmitoyl Aspartate

DI-TEA-PALMITOYL ASPARTATE

3.5

A mild synthetic surfactant that helps cleanse without stripping the skin, but it's not a standout ingredient on its own.

Irritation

low

Source

synthetic

beautyskincarecleansing
Read ingredient review

Humectant

Diacetin

DIACETIN

4.0

Diacetin is a gentle humectant that helps keep skin hydrated and can improve the feel of skincare products.

Irritation

low

Source

synthetic

beautyskincarehumectant
Read ingredient review

Solvent

Diacetone Alcohol

Diacetone Alcohol

3.5

Diacetone alcohol is a synthetic solvent that helps dissolve other ingredients, but it can be drying and may cause irritation for sensitive skin.

Irritation

moderate

Source

synthetic

beautyskincaresolvent
Read ingredient review

Fragrance Ingredient

Diacetyl

DIACETYL

2.5

Diacetyl adds a buttery scent to cosmetics but is controversial due to respiratory risks from inhalation, especially in aerosolized products.

Irritation

moderate

Source

synthetic

beautyskincarefragrance
Read ingredient review

Skin conditioning agent

Diacetyl Benzoyl Lathyrol

DIACETYL BENZOYL LATHYROL

3.5

An emerging semi-synthetic ingredient that may help support skin barrier function, but research is still limited.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
Read ingredient review

Antioxidant

Diacetyl Boldine

DIACETYL BOLDINE

4.0

A gentle antioxidant derived from boldo tree extract that may help calm skin and fight free radical damage.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
Read ingredient review

Antioxidant

Diacetyl Resveratryl Thioctate

DIACETYLRESVERATRYL THIOCTATE

3.8

A hybrid antioxidant that pairs resveratrol with alpha-lipoic acid for enhanced stability and skin penetration, but clinical research is still limited.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
Read ingredient review