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

Antioxidant

Pterocarpus Marsupium Extract

PTEROCARPUS MARSUPIUM BARK/WOOD EXTRACT

3.8

A gentle plant extract with antioxidant potential, but research in topical skincare is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Pterocarpus Soyauxii Wood Extract

PTEROCARPUS SOYAUXII WOOD EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Texture Enhancer

PTFE

PTFE

2.5

PTFE adds a silky, smooth feel to makeup but raises environmental and health concerns due to its persistence and potential contamination with PFAS.

Irritation

low

Source

synthetic

beautyskincaretexturizer
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Film Former

PTFE Acetoxypropyl Betaine

Polytetrafluoroethylene Acetoxypropyl Betaine

3.5

A synthetic ingredient that creates a smooth, water-resistant film on skin, but its environmental persistence raises concerns.

Irritation

low

Source

synthetic

beautyskincarefilm-former
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Antioxidant

Ptychopetalum Bark/Root Extract

Ptychopetalum Olacoides Bark/Root Extract

3.5

A traditional Amazonian plant extract with promising antioxidant potential, but currently lacks robust human studies to confirm specific skincare benefits.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Ptychopetalum Bark/Stem Extract

PTYCHOPETALUM OLACOIDES BARK/STEM EXTRACT

3.5

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

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Ptychopetalum Leaf Extract

PTYCHOPETALUM OLACOIDES LEAF EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Emollient

Pueraria Flower Oil

Pueraria Thunbergiana Flower Oil

3.5

A gentle floral oil with antioxidant potential, but research on its specific skin benefits is still emerging.

Irritation

low

Source

natural

beautyskincareemollient
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Soothing Agent

Pueraria Lobata Root Powder

PUERARIA LOBATA ROOT POWDER

3.8

A gentle botanical powder with antioxidant potential, but research on its topical benefits is still limited.

Irritation

low

Source

natural

beautyskincarebotanical
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Antioxidant

Pueraria Lobata Symbiosome Ferment

SACCHAROMYCES/PUERARIA LOBATA SYMBIOSOME EXTRACT FERMENT

4.0

A fermented kudzu and yeast extract that may help protect skin from environmental stress and support a healthy-looking complexion.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Pueraria Mirifica Root Ferment

LACTOBACILLUS/PUERARIA MIRIFICA ROOT FERMENT FILTRATE

4.0

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

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Pueraria Thomsoni Flower Extract

Pueraria Thomsoni Flower Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Puerarin

PUERARIN

3.8

Puerarin is a plant-derived antioxidant that may help calm skin and support collagen, but human studies in cosmetics are still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Film Former

Pullulan

Pullulan

4.2

Pullulan is a gentle, plant-derived film former that gives skin a temporary smooth, tightened feel without clogging pores or causing irritation.

Irritation

low

Source

natural

beautyskincarefilm-former
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Film Former

Pullulan Ferment Extract

AUREOBASIDIUM PULLULANS/SUCROSE FERMENT FILTRATE EXTRACT

4.3

A gentle, natural film-former that hydrates and gives a smooth, plumping feel without stickiness.

Irritation

low

Source

biotech

beautyskincarefilm-former
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Humectant

Pullulan Ferment Filtrate

AUREOBASIDIUM PULLULANS/OLIVE OIL FERMENT FILTRATE

4.0

A gentle, fermented ingredient that helps hydrate and soothe the skin while supporting a healthy moisture barrier.

Irritation

low

Source

biotech

beautyskincarehumectantsoothing
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Soothing agent

Pulsatilla Extract

Pulsatilla Tongkangensis Extract

3.8

A gentle botanical extract with antioxidant potential, though research is limited and mostly traditional.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing Agent

Pulsatilla Root Extract

PULSATILLA CHINENSIS ROOT EXTRACT

3.8

A gentle botanical extract with traditional use and emerging research on soothing and antioxidant benefits, but limited direct skincare studies.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Surfactant

Pulsatilla Saponin

Pulsatilla Saponin

3.5

A gentle plant-based surfactant with mild cleansing and soothing potential, but research is limited and it may not replace more established ingredients.

Irritation

low

Source

natural

beautyskincaresurfactant
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Humectant

Pulvinate Algae Extract

Pulvinata Extract

3.8

A gentle, hydrating algae extract that may help soothe and moisturize skin, but research is still limited.

Irritation

low

Source

natural

beautyskincarehumectant
Read ingredient review

Abrasive

Pumice

PUMICE

3.8

Pumice is a natural volcanic abrasive that effectively smooths rough skin, but it can be harsh if overused or applied with too much pressure.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Physical Exfoliant

Pumice Extract

Pumice

3.8

Pumice extract is a natural volcanic abrasive that physically buffs away dead skin cells, but its particle size and pressure during use can cause micro-tears if not formulated carefully.

Irritation

moderate

Source

natural

beautyskincareexfoliant
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Exfoliant

Pumpkin Ferment Extract

LACTOBACILLUS/CURCURBITA PEPO FRUIT FERMENT EXTRACT

4.0

A gentle, fermented pumpkin extract that helps exfoliate and calm skin without harsh scrubbing.

Irritation

low

Source

biotech

beautyskincareexfoliant
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Antioxidant

Pumpkin Fruit Extract

CUCURBITA PEPO GIROMONTIINA FRUIT EXTRACT

3.8

A gentle, antioxidant-rich fruit extract that offers mild enzymatic exfoliation and skin-soothing benefits, ideal for most skin types.

Irritation

low

Source

natural

beautyskincareantioxidant
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Humectant

Pumpkin Fruit Extract with Beta-Glucan

Cucurbita Pepo (Pumpkin) Fruit Extract, Beta-Glucan

4.0

A gentle, hydrating blend that combines pumpkin's natural enzymes with beta-glucan's soothing power—great for a brighter, smoother complexion without harsh irritation.

Irritation

low

Source

natural

beautyskincarehumectantexfoliant
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Humectant

Pumpkin Fruit Juice

CUCURBITA MAXIMA FRUIT JUICE

3.8

Pumpkin fruit juice is a gentle, water-based hydrator with mild antioxidant benefits, but its effects are mostly from its water content and trace nutrients.

Irritation

low

Source

natural

beautyskincarehumectant
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Skin conditioner

Pumpkin Phytoplacenta Extract

Cucurbita Pepo (Pumpkin) Phytoplacenta Extract

3.8

A gentle, plant-based extract that may support skin firmness and hydration, but lacks robust clinical evidence.

Irritation

low

Source

natural

beautyskincareconditioning agent
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Antioxidant

Pumpkin Seed Extract

CUCURBITA PEPO (PUMPKIN) SEED EXTRACT

4.0

Pumpkin seed extract is a gentle, antioxidant-rich ingredient that helps soothe and moisturize skin without clogging pores.

Irritation

low

Source

natural

beautyskincareantioxidant
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Exfoliant

Pumpkin Seed Ferment Filtrate

ASPERGILLUS/SACCHAROMYCES/PUMPKIN SEED FERMENT FILTRATE

4.0

A gentle fermented ingredient that helps smooth skin texture and provides antioxidant benefits without harsh scrubbing.

Irritation

low

Source

biotech

beautyskincareexfoliantantioxidant
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Emollient

Pumpkin Seed Oil PEG-8 Esters

PUMPKIN SEED OIL PEG-8 ESTERS

4.0

A gentle, semi-synthetic emollient that combines the nourishing fatty acids of pumpkin seed oil with better spreadability and water compatibility.

Irritation

low

Source

semi-synthetic

beautyskincareemollient
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Exfoliant

Pumpkin Seed Powder

Cucurbita Pepo (Pumpkin) Seed Powder

4.0

A natural, finely milled powder that gently exfoliates and provides antioxidant benefits without harsh microbeads.

Irritation

low

Source

natural

beautyskincareexfoliant
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Antioxidant

Pumpkin Sprout Extract

Cucurbita Pepo (Pumpkin) Cotyledon Extract

3.8

A gentle, plant-based antioxidant extract from pumpkin sprouts that may help calm and protect skin, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Purple Bean Plant Extract

Macroptilium Atropurpureum Flower/Leaf/Stem Extract

3.8

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

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing agent

Purple Loosestrife Extract

LYTHRUM SALICARIA FLOWER/LEAF/STEM EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing agent

Purple Pitcher Plant Extract

SARRACENIA PURPUREA FLOWER/LEAF/SEED/STALK EXTRACT

3.8

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

Irritation

low

Source

natural

beautyskincaresoothing agent
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Emollient

Purple Shamrock Oil

Oxalis Triangularis Oil

3.5

A gentle, antioxidant-rich plant oil that may help soothe and moisturize skin, but research is very limited.

Irritation

low

Source

natural

beautyskincareemollient
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Soothing Agent

Purple Willow Bark Extract

Salix Purpurea Bark Extract

4.0

A gentle, plant-derived alternative to salicylic acid that helps soothe and mildly exfoliate the skin without harshness.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Soothing Agent

Purslane Extract

Portulaca Oleracea Flower/Leaf/Stem Extract

4.3

A gentle, antioxidant-rich plant extract that helps calm irritation and protect skin from environmental stress.

Irritation

low

Source

natural

beautyskincareantioxidantsoothing
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Soothing Agent

Purslane Juice

Portulaca Oleracea Juice

4.2

Purslane juice is a gentle, antioxidant-rich botanical that helps calm irritated skin and supports a healthy moisture barrier.

Irritation

low

Source

natural

beautyskincaresoothing agent
Read ingredient review

Film Former

PVM/MA Decadiene Crosspolymer

PVM/MA Decadiene Crosspolymer

4.0

A synthetic polymer that helps skincare and makeup stay put by forming a flexible, breathable film on the skin.

Irritation

low

Source

synthetic

beautyskincarefilm former
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Film Former

PVP

PVP

3.8

PVP is a safe, synthetic film-former that helps products stay put and feel smooth, but it can feel stiff or tacky in high concentrations.

Irritation

low

Source

synthetic

beautyskincarehaircarefilm-former
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Absorbent

PVP Montmorillonite

PVP Montmorillonite

3.8

A gentle oil-absorbing clay-polymer hybrid that helps mattify skin without stripping it.

Irritation

low

Source

semi-synthetic

beautyskincareabsorbent
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Antimicrobial

PVP-Hydrogen Peroxide Complex

PVP-Hydrogen Peroxide

3.8

A stabilized hydrogen peroxide that can help with acne and brightening, but may cause irritation in sensitive skin.

Irritation

moderate

Source

semi-synthetic

beautyskincareantimicrobial
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Film Former

PVP/Decene Copolymer

PVP/DECENE COPOLYMER

3.8

A synthetic film-former that helps products stay put longer, but it may feel slightly tacky on some skin types.

Irritation

low

Source

synthetic

beautyskincarefilm-former
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Emollient

Pycnanthus Angolensis Nut Oil

PYCNANTHUS ANGOLENSIS NUT OIL

4.0

A gentle, plant-based oil that hydrates and softens skin without clogging pores, though research on its unique benefits is still limited.

Irritation

low

Source

natural

beautyskincareemollient
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Antioxidant

Pylaiella Littoralis Extract

Pylaiella littoralis extract

4.0

A gentle seaweed extract 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

Pyrenaria Leaf Extract

Pyrenaria Microcarpa Leaf Extract

3.8

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

beautyskincareantioxidant
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Insecticide

Pyrethrins

Pyrethrins

2.0

Pyrethrins are effective insecticides but are not recommended for routine skincare due to high irritation potential and lack of skin benefits.

Irritation

high

Source

natural

beautyskincareinsecticide
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Fragrance

Pyrethrum Flower Extract

TANACETUM CINERARIIFOLIUM FLOWER EXTRACT

2.5

Pyrethrum flower extract is a potent natural insecticide that is rarely used in skincare due to a high risk of skin irritation and allergy.

Irritation

high

Source

natural

beautyskincarebotanical
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