The library

Ingredient library

Every ingredient SkinAtlas knows about — all 2402 of them. What each one does, what it works well with, and what to watch for.

All 2402 ingredients — page 74 of 101

Antioxidant
Polygonum Multiflorum Extract

Root extract from Polygonum multiflorum (He Shou Wu / Fo-Ti), a classic herb in traditional Chinese and Korean medicine. Topically applied in skincare for its stilbene glycosides and anthraquinone bioactives, which provide antioxidant and skin-conditioning benefits.

antioxidantskin-conditioninganti-aging
Contains stilbene glycosides and emodin with antioxidant and anti-aging activityTraditional East Asian herb used for centuries for skin vitalityMay support skin firmness and reduce oxidative damage
Oral consumption is associated with liver toxicity — topical use at cosmetic concentrations is considered safe
+ Niacinamide+ Tocopherol
Other
Polygonum Multiflorum Root Extract

A root extract of Polygonum multiflorum (he shou wu/fo-ti) containing stilbene glycosides and anthraquinones, used in K-beauty and traditional East Asian cosmetics for antioxidant skin conditioning; note: the oral form has documented hepatotoxicity.

skin-conditioningantioxidant
Contains stilbene glycosides and anthraquinones with antioxidant activityTraditionally used in East Asian formulations for conditioning
Associated with hepatotoxicity when consumed orally; topical safety data limitedAnthraquinone content (emodin, chrysophanol) may be irritating at higher concentrations
Other
Polyhydroxystearic Acid

A polymeric hydroxystearic acid used in sunscreens and color cosmetics as a dispersant for mineral UV filter pigments, reducing white cast and improving application feel.

dispersantemulsifier
Disperses mineral UV filters (TiO2, ZnO) evenly in oil-based systemsImproves texture and skin feel of mineral sunscreensReduces whitening effect of mineral filters
Emollient
Polyisobutene

An unsaturated synthetic hydrocarbon polymer of isobutylene used as a lightweight emollient, film-former, and viscosity modifier in serums and skin-care formulations.

emollientfilm-formerviscosity-increasing
Non-occlusive, lightweight emollient with good spreadabilityForms a light film that reduces transepidermal water lossChemically inert and non-irritating
Other
Polyisoprene

A synthetic rubber elastomer that gives hydrocolloid and acne patches their stretch and adhesion properties.

film-formingadhesive
Provides elasticity and skin-adhesive properties in pimple patch substratesHelps patches conform to facial contours
Derived from natural rubber latex — may cause reactions in those with latex sensitivity
Emollient
Polyisostearate
POLYISOSTEARATE

A polymer ester of isostearic acid. Used as an emollient and co-emulsifier, particularly in anhydrous and silicone-based formulations such as sunscreens and foundations.

emollientemulsifier
Lightweight conditioningHelps stabilize silicone-based formulations
+ Cyclopentasiloxane+ Dimethicone
Other
Polymer/Butyl Methacrylate Copolymer

A synthetic copolymer derived from methacrylate monomers that functions as a film-forming agent, creating a continuous protective barrier on skin, hair, or nails with high-gloss and abrasion-resistant properties.

film formerviscosity controlling
Forms protective, flexible film on skinProvides abrasion resistance and high-gloss finishLow viscosity for easy application
Considered safe for cosmetic use when applied as directed
Other
Polymethyl Methacrylate
POLYMETHYL METHACRYLATE

A synthetic acrylic polymer used as spherical microspheres to create soft-focus optical effects, absorb sebum, and improve the texture of creams and sunscreens.

texture-enhancingabsorbentfilm-forming
Soft-focus blurring effect on skinOil absorptionSmooth, velvety texture
+ Silica+ Dimethicone
Other
Polymethylsilsesquioxane

A fine silicone resin powder used to create soft-focus blurring effects, absorb oil, and improve the texture of sunscreens, primers, and creams.

film-formertexture-agent
Creates a soft-focus, blurring effect on skinAbsorbs oil and reduces shineImproves product texture and spreadability
Humectant
Polymnia Sonchifolia Root Juice

The expressed juice of yacon (Polymnia sonchifolia / Smallanthus sonchifolius) tubers, rich in fructooligosaccharides that humectate, support the skin microbiome, and strengthen the moisture barrier.

humectantskin-conditioningprebiotic
Rich in beta-fructooligosaccharides (FOS) that attract and retain moistureSupports skin microbiome balance via prebiotic effectNatural source of potassium, calcium, and amino acids for skin nourishment
Surfactant
Polyoxyethylene Alkyl Ether Phosphate
POLYOXYETHYLENE ALKYL ETHER PHOSPHATE

A generic anionic surfactant class of phosphated polyoxyethylene alkyl ethers. Functions as a mild emulsifier and surfactant in cosmetic emulsions.

emulsifiersurfactant
Mild anionic emulsifierSuitable for sensitive skin emulsions
+ Glyceryl Stearate+ Cetearyl Alcohol
Humectant
Polyoxyethylene Methyl Glucoside
METHYL GLUCETH-20

A polyoxyethylene derivative of methyl glucoside. Functions as a humectant, drawing and retaining moisture in the skin. The Japanese JSCI name corresponds to INCI Methyl Gluceth-20. Used in Shiseido d program moist-care products.

humectantskin-conditioning
Binds water to skin for lasting hydrationGentle on sensitive skinNon-sticky humectant
+ Glycerin+ Sodium Hyaluronate
Emollient
Polyoxyethylene Methylpolysiloxane Copolymer

A silicone-polyethylene glycol copolymer used as an emulsifier to create stable oil-in-water emulsions in Asian skincare formulations.

emulsifierskin-conditioning
Enables stable silicone-in-water emulsionsSmooth silky feel
+ Dimethicone
Other
Polyoxyethylene Polyoxypropylene Decyl Tetradecyl Ether
PEG/PPG DECYL TETRADECYL ETHER

A polyoxyethylene-polyoxypropylene ether of a long-chain fatty alcohol (C14/C10). Functions as a mild nonionic emulsifier and solubilizer.

emulsifiersolubilizer
Nonionic PEG-PPG block copolymer used to solubilize oils and active ingredients in aqueous formulasLow-irritation emulsifier often used in Japanese sensitive-skin products
Solvent / vehicle
Polypropylene Glycol
PPG

Polypropylene glycol — a polymer of propylene oxide. More lipophilic than PEG. Used as a solvent and humectant in cosmetic formulations. Found in Elixir Retino Power Cream.

solventhumectant
Solubilizes oily ingredients in formulasHumectant
+ Glycerin+ Butylene Glycol
Other
Polypropylsilsesquioxane

A silicone resin formed from propylsilsesquioxane units, used in cosmetics as a film former and texture-enhancing agent; chemically distinct from polymethylsilsesquioxane (which uses methyl groups) though both are T-resin silicones.

Film formerTexture agentEmollient
Creates a smooth, silky skin feelFilm-forming properties improve wear and longevitySoft-focus effect on skin imperfections
Other
Polyquaternium-10

A cationic polymer derived from hydroxyethylcellulose quaternized with trimethylammonium groups, widely used as a conditioning and film-forming agent in hair and skin care.

Hair conditioning agentSkin-conditioningFilm-formingAntistatic
Provides conditioning and smoothing effect on hair and skinImparts antistatic propertiesForms a light protective film on skin surface
Potential for build-up with repeated use in rinse-off productsGenerally considered low irritation risk at cosmetic concentrations
Other
Polyquaternium-22

A cationic copolymer of acrylamide and dimethyl diallyl ammonium chloride used as an antistatic conditioning and film-forming agent in skin and hair care formulations.

AntistaticFilm-formingSkin conditioningHair conditioning
Improves slip and feel on skin and hairProvides antistatic conditioningFilm-former that enhances texture
Generally well tolerated at cosmetic use levels
Other
Polyquaternium-39

A cationic polymer used as a film-former and skin conditioner in facial cleansers and moisturizers, providing a soft after-feel.

film-formerskin-conditioningantistatic
Imparts a smooth, soft feel to skinProvides mild antistatic conditioningCompatible with anionic and nonionic surfactant systems
Other
Polyquaternium-51

A synthetic phosphorylcholine-based copolymer that mimics cell membrane phospholipids, used to form a protective, moisture-retaining film on skin in serums and masks.

film-formerhumectant
Forms a cell-membrane-mimetic film that retains moisture and reduces TEWLLong-lasting hydration without stickinessSuppresses irritation from surfactants
Other
Polyquaternium-6
POLYQUATERNIUM-6

A quaternary ammonium polymer (polydiallyldimethylammonium chloride) used in rinse-off cleansers and conditioners to deliver a smooth, conditioned skin feel post-wash. Highly charged; adsorbs to skin and hair surfaces.

conditioning agentfilm-formerantistatic
Provides a silky, conditioning film on skin after rinse-offImproves skin feel in wash-off products
+ Sodium Cocoamphoacetate+ Glycerin
Other
Polyquaternium-61

A synthetic quaternary ammonium polymer used as a film-forming and skin-conditioning agent, primarily in leave-on and rinse-off skin care formulas.

film-formerskin-conditioning
Forms a protective, conditioning film on skinHelps reduce transepidermal water lossWell-tolerated by sensitive skin
Other
Polyquaternium-67

A cationic conditioning polymer derived from hydroxyethylcellulose and a diallyldimethylammonium chloride copolymer, used in rinse-off and leave-on formulas to provide film-forming, slip, and conditioning properties.

film-formingconditioningviscosity modifier
Provides slip and conditioning to skin and hairImproves texture and spreadability of cleansersMild cationic polymer with good compatibility in low-pH formulations
Other
Polyquaternium-7

A cationic conditioning polymer used in cleansers and leave-on products to condition skin, reduce surfactant irritation, and provide a smooth, conditioned feel.

film-formerconditioningantistatic
Conditions skin and reduces irritation from surfactantsImproves product spreadability and textureProvides a smooth, conditioned after-feel