The library

Ingredient library

Every ingredient SkinAtlas knows about — all 2178 of them. What each one does, what it works well with, and what to watch for.

366 ingredients in Other — page 11 of 16

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
Other
Polysilicone-11

Polysilicone-11 is a high-molecular-weight silicone polymer (a polysiloxane copolymer with functional groups) used as a film-former and sensory modifier in serums and lightweight skincare formulations. It provides a smooth, non-greasy skin feel and can contribute optical softening effects. Distinct from lower-molecular-weight dimethicone and cyclopentasiloxane in its film-forming and substantivity properties.

film-formingskin-conditioningemulsion-stabilizing
A high-molecular-weight silicone polymer that forms a breathable, water-resistant film on skin — used as a sensory modifier and soft-focus agent in serums and lightweight emulsionsContributes to a non-greasy, velvety skin feel and may reduce the appearance of fine lines and pores through light-scattering and optical blurring when combined with other film formersBetter skin substantivity than standard dimethicone in aqueous formulas due to its cross-linked or high-MW polymer structure
+ Dimethicone+ Niacinamide+ Glycerin
Other
Polysilicone-9

A crosslinked silicone elastomer (polysiloxane) used as a film-former and sensory modifier in cosmetics. Provides a weightless, non-greasy finish. Widely used in Japanese sunscreens (including Biore UV products) to achieve their distinctive light, watery texture.

film-formingskin-conditioningsensory-enhancer
Crosslinked silicone elastomer polymer that creates an ultra-light, non-tacky film — key to Japanese sunscreen's 'water-like' textureHelps suspend UV filters evenly and improves sweat/water resistance in SPF formulas
Other
Polystyrene
POLYSTYRENE

Synthetic polymer microspheres added to sunscreen and colour cosmetics for optical blurring. Used in Rohto Skin Aqua Super Moisture Gel for its photo-finish soft-focus effect.

optical diffusersoft-focus agent
Creates soft-focus blurring effect on skinLight-reflecting platelets minimise pore appearance
Microplastic — not biodegradable; environmental persistence concern
+ Dimethicone+ Silica
Other
Polyurethane Film

A thin, flexible synthetic polymer film used as the outer backing layer of acne patches and wound dressings, providing a protective, occlusive barrier over the adhesive layer.

film-formingbinding-agent
Provides transparent, flexible, waterproof backing for acne patchesAllows oxygen transmission while protecting the wound environment
Generally considered inert; no known skin sensitization at use concentrations
Other
Polyurethane-9

A polyurethane-based film-forming polymer used as the flexible carrier matrix in hydrocolloid acne patches and dressings.

film-formingocclusive
Creates the flexible, skin-adhesive substrate in hydrocolloid patch formatsProvides a breathable yet occlusive barrier over blemishes
Other
Polyvinyl Alcohol

A water-soluble synthetic polymer used as a film-former and thickener in sunscreens and peel-off masks, providing a smooth, even texture.

film-formerviscosity-increasing
Forms a clear, flexible film that can help SPF products spread evenlyThickens and stabilizes formulasWater-soluble and easily removed
Other
Potassium Alum

A naturally occurring aluminum potassium sulfate mineral salt used as an astringent, mild antibacterial, and deodorant active in beauty waters, deodorants, and after-shaves.

astringentantibacterialhemostatic
Tightens pores and provides an astringent effectNatural mineral-origin deodorant activeCOSMOS-certified organic-compatible ingredient
Contains aluminum; some concerns around percutaneous absorption though regulatory bodies have not restricted its use in cosmeticsMay cause dryness or mild irritation at high concentrations
Other
Potassium Aspartate

The potassium salt of aspartic acid, used in cosmetics as a skin-conditioning agent that provides both a mineral component (potassium) and an amino acid (aspartate) associated with cellular energy metabolism.

Skin conditioningMineral saltAmino acid delivery
Delivers potassium mineral and aspartic acid amino acid to skinSkin conditioning
Other
Potassium Chloride

An inorganic potassium salt used in cosmetics as an ionic viscosity modifier and buffering agent, also providing mineral supplementation in spa-type and mineral-infusion formulations.

viscosity controllingskin-conditioningbuffering
Adjusts ionic strength of formulationsSupports mineral balance in skin-conditioning productsUsed to stabilize surfactant systems and adjust viscosity
Other
Potassium Hydroxide

A strong base used in very small quantities to adjust formula pH; fully reacted/neutralized in finished cosmetic products.

ph-adjuster
Adjusts and stabilizes formula pHNeutralizes acidic ingredients to achieve target pH
Caustic at high concentration; used in tiny amounts in finished products where it is fully neutralized
Other
Potassium Magnesium Aspartate

A mineral aspartate salt supplying both potassium and magnesium ions, used as a skin conditioner and electrolyte complex in restorative and color-correcting cosmetic formulas.

skin-conditioningelectrolyte
Delivers potassium and magnesium ions to support cellular energy metabolism in skinConditions and tones skin
Other
Potassium Phosphate

An inorganic potassium salt used as a pH adjuster and buffering agent to maintain stable pH in cosmetic formulas.

ph-adjusterbuffering-agent
Adjusts and stabilizes formula pHMaintains buffering capacity in aqueous formulas
Other
Pullulan

A water-soluble linear polysaccharide produced by fermentation of Aureobasidium pullulans, used as a film-former and texture agent that delivers an immediate skin-firming effect and supports moisture retention.

film-formerthickenerantioxidant
Instant skin-tightening effect via a strong adhesive filmReduces transepidermal water lossHelps deliver and stabilize active ingredients
Other
Quaternium-90 Bentonite
QUATERNIUM-90 BENTONITE

A quaternary ammonium-modified bentonite clay. Swells in oils and non-polar solvents to create gel networks, used as a rheology modifier and suspending agent in anhydrous and W/O formulas.

rheology modifierviscosity builder
Stabilizes W/O emulsionsPrevents settling and phase separationNon-aqueous thickener
+ Dimethicone+ Squalane
Other
Raphanus Sativus Seed Extract
Raphanus Sativus (Radish) Seed Extract

An extract from radish (Raphanus sativus) seeds used as a skin-conditioning botanical, distinct from the fermented radish root used in natural preservation.

skin-conditioningemollient
Conditions and softens skinRich in fatty acids that support barrier lipidsAntioxidant polyphenols from radish seeds
Other
Red 33
RED 33

A synthetic monoazo dye (CI 17200) used to give pink or red hues to toners, essences, and rinse-off products. Cosmetic-grade; not approved for use near the eyes in all markets.

colorant
Provides pink-to-red tint in cosmetic formulas
Rare azo-dye sensitisation in susceptible individuals
Other
Red 4
CI 14700

A synthetic red azo dye (CI 14700 / FD&C Red No. 4) approved as a cosmetic colorant in the US (external use only) and EU for use in cosmetics and personal care products.

colorant
Provides red coloration to cosmetic formulas
Azo dye class has theoretical mutagenicity concerns at high doses — regulatory assessments consider it safe at cosmetic concentrationsFDA approved for external use only (not lips or eye area) at ≤6%; EU Annex IV permitted colorant
Other
Red 6
CI 15850

D&C Red No. 6 (CI 15850), a synthetic organic monoazo dye providing red coloration. Used primarily in lip and nail products. Approved by the FDA for cosmetic use except around the eyes.

colorant
Synthetic monoazo dye used to impart red/pink shades in lip products and makeup
Synthetic azo dye; potential for contact sensitization in sensitive individualsNot approved for use around the eyes (FDA)
Other
Ribose

D-Ribose is a naturally occurring monosaccharide and the sugar backbone of RNA and ATP. In cosmetics it is used as a skin-conditioning humectant in powder and aqueous formulations. Claims that topical ribose supports cellular energy (by providing a substrate for ATP resynthesis) are biologically plausible but not strongly verified clinically at cosmetic concentrations. Used alongside ascorbic acid and other actives in vitamin C powder treatment formats.

skin-conditioninghumectant
D-Ribose is a pentose monosaccharide and essential precursor to ATP (adenosine triphosphate) and other nucleotides — claims exist that topical application can support cellular energy metabolism in skin cellsHygroscopic sugar that contributes mild humectant activity in aqueous formulationsUsed in premium powder treatments (notably Neogen's Dermalogy Real Vita C line) as a skin conditioning component alongside ascorbic acid
+ Ascorbic Acid+ Betaine+ Panthenol