The library

Ingredient library

Every ingredient SkinAtlas knows about — all 2255 of them. What each one does, what it works well with, and what to watch for.

All 2255 ingredients — page 18 of 94

Surfactant
Ceteth-5

An ethoxylated cetyl alcohol (PEG-5 cetyl ether); mild nonionic surfactant used for emulsification in ampoule and serum formulas.

surfactantemulsifier
Mild nonionic surfactant for emulsification in cosmetic formulas
Preservative
Cetrimonium Bromide

A quaternary ammonium cationic surfactant (CTAB) used as a cosmetic preservative (EU max 0.1%) with additional hair and skin conditioning properties.

preservativeconditioning
Broad-spectrum antimicrobial preservationCationic conditioning properties
EU Annex V max 0.1%; CIR considers safe ≤0.25% when formulated to be non-irritatingCan cause skin and eye irritation at higher concentrations
Emollient
Cetyl Alcohol

A fatty alcohol that softens skin and stabilizes creams (not drying like volatile alcohols).

emollientemulsifier
SofteningStabilizes emulsions
Emollient
Cetyl Butylene Glycol
CETYL BUTYLENE GLYCOL

A butylene glycol ether of cetyl alcohol. A lightweight emollient used for its skin-conditioning properties in Curel's Moisture Repair Eye Cream.

emollientskin-conditioning
Lightweight emollientSkin softening
+ Dimethicone+ Glycerin
Emollient
Cetyl Dimethicone

A silicone copolymer combining a dimethicone backbone with a cetyl (C16 saturated fatty) pendant group. The cetyl chain adds lipophilic character and emulsifying capability to the silicone, allowing it to function simultaneously as an emollient and a mild O/W emulsifier. Used in lightweight facial formulations where a smooth, cushioned texture without heaviness is desired.

emollientskin-conditioningemulsifying
Hybrid silicone-fatty alcohol structure delivers a silky, smooth skin feel characteristic of dimethicone with the emulsifying properties of a cetyl (C16) fatty chainFunctions as both an emollient and an O/W co-emulsifier — reduces the need for additional emulsifying agentsProduces a lightweight, non-greasy finish suitable for facial formulas and sleeping masks
+ Dimethicone+ Dimethiconol+ Niacinamide
Emollient
Cetyl Esters

A blend of esters of cetyl alcohol and fatty acids (a synthetic spermaceti substitute) that provides a smooth, waxy emollient texture to creams and cleansing products.

emollientthickener
Smooth, creamy emollient feelAdds body and richness to creams and balms
Emollient
Cetyl Ethylhexanoate

A synthetic ester of cetyl alcohol and 2-ethylhexanoic acid that provides a light, dry-touch emollient feel in creams and serums.

emollient
Lightweight, non-greasy skin conditioningImproves spreadability of formulas
Other
Cetyl Hydroxyethylcellulose

An ether of cetyl alcohol and hydroxyethylcellulose that serves as an emulsion stabilizer, film-former, and thickening agent in cosmetic formulations.

emulsion stabilizingfilm formingviscosity controllingthickening
stabilizes emulsionsthickens formulationscreates protective films
Other
Cetyl PEG/PPG-10/1 Dimethicone

A silicone-based amphiphilic emulsifier that enables stable water-in-silicone emulsions, commonly used in sunscreens and color cosmetics.

emulsifiersurfactant
Stabilizes water-in-silicone and silicone-in-water emulsionsImproves skin feel in sunscreens and CC creams
Emollient
Cetyl Palmitate

A wax ester of cetyl alcohol and palmitic acid that softens skin and adds a smooth, waxy texture to creams and lotions.

emollientthickener
Softens and conditions skinAdds body and richness to creams
Surfactant
Cetyl Phosphate

A phosphate ester of cetyl alcohol used as a mild anionic emulsifier to create stable, skin-compatible oil-in-water emulsions.

emulsifiersurfactant
Stabilizes oil-in-water emulsionsMild, skin-compatible emulsification
Barrier support
Cetyl-PG Hydroxyethyl Palmitamide

A synthetic pseudo-ceramide (ceramide analog) developed by Kao (used in Curél) that mimics the structure of natural ceramides to replenish barrier lipids, improve water retention, and soothe dry, atopic skin.

ceramidebarrier-supportskin-conditioning
Reinforces the skin barrier by mimicking natural ceramidesImproves water retention in dry and atopic skinClinically studied for atopic dermatitis improvement
Antioxidant
Chaenomeles Sinensis Fruit Extract

Extract from the fruit of Chaenomeles sinensis (Chinese quince / mogwa), a traditional East Asian medicinal fruit; provides antioxidant organic acids and polyphenols in hanbang skincare.

antioxidantastringent
Rich in organic acids (malic, quinic) and polyphenols with antioxidant and mild astringent propertiesTraditional Korean medicine ingredient (mogwa) used in hanbang formulas
Soothing
Chamaecyparis Obtusa Extract
CHAMAECYPARIS OBTUSA EXTRACT

Extract from Chamaecyparis obtusa (Japanese hinoki cypress). Rich in hinokitiol (β-thujaplicin) and flavonoids with antimicrobial and anti-inflammatory properties. Used in Transino formulas for skin-calming benefits alongside brightening actives.

antimicrobialantioxidantsoothing
Contains hinokitiol with antimicrobial and anti-inflammatory activitySoothing for stressed skinSacred Japanese botanical
Contains hinokitiol — possible sensitisation in fragrance-sensitive individuals
+ Tranexamic Acid+ Dipotassium Glycyrrhizate
Soothing
Chamaecyparis Obtusa Leaf Extract

An extract derived specifically from the leaves of Chamaecyparis obtusa (Japanese hinoki cypress), delivering soothing, antimicrobial, and antioxidant benefits through hinokitiol and flavonoids; distinct from the general whole-plant Chamaecyparis obtusa extract.

soothingantimicrobialantioxidant
Anti-inflammatory and calming via leaf-derived flavonoids and hinokitiolAntimicrobial propertiesAntioxidant protection
Hinokitiol can cause sensitization in some individuals; patch-test recommended for sensitive skin
Soothing
Chamaecyparis Obtusa Water

The hydrosol (distillate water) obtained from Chamaecyparis obtusa (Japanese hinoki cypress), carrying water-soluble antimicrobial and soothing compounds including hinokitiol; distinct from the full plant extract.

skin-conditioningantimicrobialsolvent
Contains hinokitiol and water-soluble flavonoids with antimicrobial and anti-inflammatory effectsTones and refreshes skinDistinct from the extract — a hydrosol with a lighter phytochemical profile
Fragrance
Chamomilla Recutita (Matricaria) Flower Oil
Matricaria Recutita Flower Oil

The volatile essential oil from German chamomile flowers, valued for its soothing, anti-inflammatory properties via chamazulene; also a natural fragrance ingredient.

fragrantsoothing
Calms and soothes irritated skin via chamazulene and bisabololAntioxidant and antibacterial properties
Essential oil that may sensitize reactive or allergy-prone skinContains natural fragrance compounds; patch test recommended for sensitive skin
Soothing
Chamomilla Recutita (Matricaria) Flower/Leaf Extract

Chamomilla Recutita (Matricaria) Flower/Leaf Extract is derived from both the flowers and leaves of German chamomile, yielding a broader phytochemical profile than flower-only extracts. Bioactives include alpha-bisabolol (wound-healing, anti-inflammatory), chamazulene (anti-inflammatory, blue pigment), apigenin and luteolin (flavonoid antioxidants), and phenolic acids from the leaf fraction. Distinct INCI from the flower-only extract; used in soothing and sensitive-skin formulations.

anti-inflammatorysoothingantioxidantskin-conditioning
Chamomile flower and leaf extract is richer in flavonoids (apigenin, luteolin) and phenolic acids than flower extract alone — the additional leaf fraction contributes further anti-inflammatory activityAlpha-bisabolol from the flower fraction provides proven wound-healing, anti-irritant, and skin-calming properties; leaf polyphenols add antioxidant depthWidely documented as one of the most effective botanical anti-inflammatory actives in cosmetics; suitable for reactive, sensitized, and post-procedure skin
Asteraceae family — contact allergy to chamomile (sesquiterpene lactone sensitivity) is rare but documented; patch test recommended for confirmed ragweed-sensitive individuals
+ Allantoin+ Panthenol+ Centella Asiatica Extract
Soothing
Chamomilla Recutita Flower Extract

German chamomile flower extract rich in bisabolol and apigenin, used to calm and soothe sensitive or irritated skin.

soothingantioxidant
Calms redness and irritationAntioxidant supportSoothes sensitive skin
May cause reactions in people with Asteraceae/daisy family allergies
Soothing
Chamomilla Recutita Flower Water
CHAMOMILLA RECUTITA FLOWER WATER

Steam-distilled floral water (hydrosol) from Chamomilla recutita (German chamomile) flowers. Contains volatile compounds including alpha-bisabolol and chamazulene. Distinct from chamomile extract; functions as a soothing, mildly anti-inflammatory toner base.

soothinganti-inflammatory
Gentle soothing for sensitive and irritated skinMild anti-inflammatory effectHydrating toning
+ Allantoin+ Panthenol
Other
Charcoal
CHARCOAL

Carbon-based charcoal (often activated or from bamboo). Used in skincare for its adsorptive properties — binds to oils, impurities, and toxins. Used in Rosette's peeling gel for pore-cleansing.

absorbentcolorant
Adsorbs excess sebum and impurities from poresCreates dramatic black color in formulas
May be overly drying if used excessively
+ Kaolin+ Allantoin
Active
Chenopodium Quinoa Seed Extract

An extract from quinoa seeds (Chenopodium quinoa) rich in amino acids, flavonoids, and vitamins, used in premium skincare for antioxidant, brightening, and skin-conditioning properties.

brighteningantioxidanthumectant
Rich in amino acids, vitamins, and polyphenolsSupports a brighter, firmer-looking complexionAntioxidant protection and mild hydration
Barrier support
Chitosan

Chitosan is a linear polysaccharide derived by partial deacetylation of chitin (found in crustacean shells, insect exoskeletons, and fungal cell walls). The degree of deacetylation determines its cationic charge density — cosmetic-grade chitosan is 75–90% deacetylated. Its cationic nature gives it substantive affinity for skin, excellent film-forming properties, and antimicrobial activity. Used in Korean skincare as a barrier-supportive, skin-conditioning, and gentle anti-microbial active.

film-formingbarrier-repairantimicrobialskin-conditioning
Chitosan is a cationic polysaccharide derived from chitin (crustacean shells) that adsorbs tightly to the negatively charged skin surface, forming a breathable, moisture-retaining film with substantive skin conditioningThe cationic character of chitosan gives it inherent antimicrobial activity against gram-positive bacteria and fungi — relevant for acne-prone and oily skin formulationsLow-molecular-weight chitosan fractions can penetrate into the stratum corneum, reinforcing the lipid barrier and contributing to trans-epidermal water loss reduction
Derived from crustacean shells — not vegan or shellfish-allergy safe; shellfish-allergic individuals should exercise caution, though documented topical reactions are rareHighly cationic — incompatible with anionic polymers (e.g., carbomer, hyaluronic acid at low ionic strength) in formulations; can cause turbidity or precipitation if mixed improperly
+ Panthenol+ Ceramide NP+ Beta-Glucan
× Carbomer
Soothing
Chloranthus Japonicus Extract
CHLORANTHUS JAPONICUS EXTRACT

Extract from Chloranthus japonicus, a small woodland shrub native to Japan used in traditional herbal medicine. Contains chloranthone and other sesquiterpenoids with anti-inflammatory and antioxidant activity.

soothingantioxidant
Traditional Japanese medicinal herbSoothing and anti-inflammatory
+ Dipotassium Glycyrrhizate+ Allantoin