The library

Ingredient library

Every ingredient SkinAtlas knows about — all 2371 of them. What each one does, what it works well with, and what to watch for.

All 2371 ingredients — page 76 of 99

Emollient
Propylene Glycol Dicaprylate/Dicaprate
PROPYLENE GLYCOL DICAPRYLATE/DICAPRATE

A mixed ester of propylene glycol with caprylic (C8) and capric (C10) fatty acids used as a lightweight, non-comedogenic emollient with excellent skin feel.

emollientskin-conditioningsolvent
Lightweight, non-greasy skin feelExcellent spreadability and skin absorptionNon-comedogenic
+ Glycerin+ Dimethicone
Emollient
Propylheptyl Caprylate

A lightweight synthetic ester of propylheptanol and caprylic acid that delivers a dry, non-greasy emollient feel in serums and creams.

emollientsolvent
Ultra-light, dry-touch skin feelImproves spreadability without greasiness
Preservative
Propylparaben

A longer-chain paraben preservative effective against bacteria and fungi, permitted by EU SCCS at up to 0.14% with specific restrictions on products for infants.

preservative
Broad-spectrum antimicrobial preservation at low concentrations
Weak estrogenic activity; EU SCCS permits up to 0.14% (as acid) in leave-on and rinse-off productsNot permitted in leave-on products for the nappy area of children under three
Exfoliant
Protease
PROTEASE

A proteolytic enzyme that cleaves peptide bonds in denatured or dead skin proteins. Used in enzyme-based cleansers and wash-off exfoliants (Melano CC Enzyme Face Wash) to provide gentle exfoliation alongside vitamin C actives.

enzymatic exfoliantskin-renewing
Gently dissolves dead keratin proteins for smoother skinWorks at skin's natural pH; less irritating than acid exfoliants
Possible enzyme sensitisation with repeated exposureAvoid on broken or compromised skin
+ Kaolin+ Ascorbic Acid
Soothing
Prunella Vulgaris Leaf Extract

An extract from the leaves of Prunella vulgaris (self-heal), a mint-family herb, containing rosmarinic acid, ursolic acid, and polyphenols that provide anti-inflammatory, antioxidant, and skin-soothing benefits.

soothingantioxidantanti-inflammatory
Anti-inflammatory properties that calm redness and irritationAntioxidant activity from rosmarinic acid and other polyphenolsTraditional use in herbal medicine for wound healing and skin conditions
Antioxidant
Prunus Amygdalus Dulcis Fruit Extract

An extract from the fruit (hull/skin) of Prunus amygdalus dulcis (sweet almond), providing antioxidant polyphenols and mild conditioning properties distinct from the seed oil.

antioxidantskin-conditioning agentemollient
Contains polyphenols and flavonoids with antioxidant properties from almond fruitProvides mild skin-conditioning and softening effectsDifferent polyphenol profile from almond seed oil
May cause reactions in those with tree nut allergies, though extracted polyphenols have lower allergenicity than proteins
Emollient
Prunus Amygdalus Dulcis Oil

Sweet almond oil, a softening emollient rich in oleic acid.

emollient
SofteningNourishing
Humectant
Prunus Armeniaca (Apricot) Juice

Fresh-pressed juice from apricot (Prunus armeniaca), distinct from apricot kernel oil or fruit extract, supplying humectant sugars and skin-conditioning vitamins.

humectantconditioningantioxidant
Attracts and retains moistureProvides vitamins A and C that support skin healthSoftens and refreshes skin
Antioxidant
Prunus Armeniaca (Apricot) Kernel Extract
Prunus Armeniaca Kernel Extract

A water or hydroalcoholic extract of apricot kernels rich in polyphenols and flavonoids, used for antioxidant and skin-conditioning benefits; distinct from the expressed fixed oil.

antioxidantskin-conditioning
Antioxidant support from polyphenols and flavonoidsConditions and softens skinSupports a bright, even complexion
Emollient
Prunus Armeniaca Kernel Oil

Apricot kernel oil, a light, conditioning emollient.

emollient
Softening
Antioxidant
Prunus Domestica Fruit Extract

An extract from European plum fruit (Prunus domestica) rich in polyphenols and flavonoids that provide antioxidant protection and condition skin.

antioxidantconditioningsoothing
Provides antioxidant protection via polyphenols and flavonoidsHelps protect against oxidative stress and premature agingConditioning and softening for skin
Antioxidant
Prunus Lannesiana Flower Extract
PRUNUS LANNESIANA FLOWER EXTRACT

Extract from the flowers of Prunus lannesiana (Oshima cherry / Yoshino cherry), one of the most culturally significant cherry trees in Japan. Contains sakuranetol, coumarin derivatives, and polyphenols with antioxidant and skin-conditioning properties.

antioxidantsoothingskin-conditioning
Antioxidant polyphenolsSoothing and conditioningJapanese cherry blossom botanical
+ Tocopherol+ Tranexamic Acid
Antioxidant
Prunus Mume Fruit Extract

An extract from the fruit of Prunus mume (ume / Japanese plum or apricot), a plant central to Japanese traditional beauty practices, valued for its antioxidant polyphenols and organic acids that contribute brightening and conditioning effects.

AntioxidantSkin-conditioning agentAstringent
High organic acid content (citric, malic, succinic) provides mild exfoliating and brightening propertiesAntioxidant polyphenols protect against oxidative stressTraditional use in Japanese skincare for skin clarity and conditioning
High acid content may cause irritation in sensitive skin at elevated concentrations
Antioxidant
Prunus Persica (Peach) Fruit Extract

An extract from peach fruit (Prunus persica), distinct from peach leaf or seed extracts, delivering antioxidant polyphenols and soothing properties.

antioxidantsoothingconditioning
Provides antioxidant protection via polyphenols and carotenoidsSoothes and calms sensitive skinConditions and softens skin with natural sugars and vitamins
Emollient
Prunus Persica (Peach) Kernel Oil
PRUNUS PERSICA KERNEL OIL

Cold-pressed oil from the kernels of Prunus persica (peach). Closely related to Prunus Amygdalus Dulcis (Sweet Almond) Oil in fatty acid composition — predominantly oleic acid (~65%) and linoleic acid (~25%). Lighter in texture than shea or coconut derivatives, making it well-suited for leave-on facial and lip formulas. Provides skin conditioning and mild antioxidant support.

emollientskin-conditioningantioxidant
Light, fast-absorbing oil rich in oleic (C18:1) and linoleic (C18:2) acids — similar fatty acid profile to sweet almond oilVitamins A and E content provides mild antioxidant protection alongside emolliencyNon-comedogenic and suitable for dry, sensitive, and mature skin types
+ Shea Butter+ Tocopherol+ Squalane
Antioxidant
Prunus Persica (Peach) Seed Extract
PRUNUS PERSICA SEED EXTRACT

Extract from peach (Prunus persica) seeds. Rich in antioxidant polyphenols and fatty acids. Used in Shiseido Elixir's Reflet line for antioxidant and skin-conditioning benefits.

antioxidantskin-conditioning
Antioxidant-rich polyphenolsSkin conditioningTraditional Japanese beauty botanical
+ Tocopherol+ Camellia Sinensis Leaf Extract
Soothing
Prunus Persica Leaf Extract
PRUNUS PERSICA LEAF EXTRACT

An extract of peach (Prunus persica) leaves rich in polyphenols and flavonoids, used in Japanese skincare for soothing, antioxidant, and skin-conditioning properties.

soothingantioxidantskin-conditioning
Calms skin irritation and rednessAntioxidant protection from polyphenolsTraditional Japanese botanical ingredient
+ Dipotassium Glycyrrhizate+ Tocopherol
Antioxidant
Prunus Serrulata Flower Extract

An extract from the flowers of Prunus serrulata (Japanese cherry / sakura), used for antioxidant and brightening properties; distinct from the leaf extract and the yeast fermentation filtrate entries already in the KB.

AntioxidantSkin-conditioning agentSoothing agent
Polyphenols and flavonoids provide antioxidant protectionBrightening properties attributed to phenolic compoundsSoothing effect on sensitive skin
Antioxidant
Prunus Serrulata Leaf Extract
PRUNUS SERRULATA LEAF EXTRACT

Extract from the leaves of Prunus serrulata (Japanese cherry, Sakura), a culturally significant tree in Japan. Contains sakuranetol, coumarin derivatives, and antioxidant polyphenols. Used for its antioxidant and skin-conditioning properties.

antioxidantskin-conditioning
Antioxidant and soothingTraditional Japanese skincare botanical
+ Tocopherol+ Tranexamic Acid
Antioxidant
Prunus Speciosa Leaf Extract
PRUNUS SPECIOSA LEAF EXTRACT

Extract from the leaves of Prunus speciosa (Oshima cherry), a wild Japanese cherry tree. Contains phenolic acids and flavonoids with antioxidant properties. Frequently used in Shiseido's brightening lines alongside other Japanese botanicals.

antioxidantskin-conditioning
Antioxidant from phenolic compounds and flavonoidsTraditional Japanese cherry blossom botanical
+ Artemisia Princeps Leaf Extract+ 2-O-Ethyl Ascorbic Acid
Soothing
Prunus Yedoensis Leaf Extract

An extract from the leaves of the Yoshino cherry tree (Prunus yedoensis), used in cosmetics for its soothing and antioxidant properties.

soothingantioxidant
Soothes and calms skinAntioxidant protection from polyphenolsTraditional use for skin care in Japanese cosmetics
Humectant
Pseudoalteromonas Exopolysaccharides

Marine-derived exopolysaccharides from Pseudoalteromonas bacteria that provide clinically effective hydration, skin barrier strengthening, and anti-aging benefits in cosmetic formulations.

humectantskin protectinganti-aging
Provides deep hydration and restores skin moistureStrengthens skin barrier and reduces sensitivity to environmental stressOffers anti-aging effects including improved firmness and protection from cold-induced dryness
Considered safe for cosmetic use
Soothing
Pseudoalteromonas Ferment Extract

A marine-bacteria ferment (exopolysaccharide) that hydrates and soothes sensitive skin.

soothinghumectant
SoothingHydration
Barrier support
Pseudozyma Epicola/Camellia Sinensis Seed Oil Ferment Extract Filtrate

A filtrate from fermenting Camellia sinensis seed oil with Pseudozyma epicola yeast, yielding mannosylerythritol lipid (MEL) glycolipids. MELs have a lamellar structure similar to skin's natural lipids, enabling enhanced penetration and barrier-supportive delivery of fatty acids and antioxidants. Key ingredient in Drunk Elephant Lala Retro Whipped Cream.

skin-conditioningemollientbarrier-repairing
Bioferment produced by culturing the yeast Pseudozyma epicola on green tea (Camellia sinensis) seed oil; generates mannosylerythritol lipids (MELs) — natural glycolipid biosurfactantsMELs mimic cell-membrane phospholipids, supporting skin barrier repair and delivering moisturizing fatty acids in a liposome-like structure
+ Ceramide NP+ Cholesterol+ Sodium Hyaluronate Crosspolymer