The library

Ingredient library

Every ingredient SkinAtlas knows about — all 2165 of them. What each one does, what it works well with, and what to watch for.

192 ingredients in Active — page 2 of 8

Active
Argireline
Acetyl Hexapeptide-8

A peptide marketed to relax expression lines.

peptide
Targets expression lines
Active
Ascorbic Acid

Pure vitamin C; a potent antioxidant and brightener.

antioxidantvitamin-c
BrightensBoosts collagenAntioxidant protection
Unstable formulaCan sting
+ Tocopherol+ Ferulic Acid
× Retinol× Retinal
Active
Ascorbyl Propyl Hyaluronate

A hybrid molecule formed by esterification of ascorbic acid (vitamin C) with the carboxyl groups of hyaluronic acid via a propyl linker. Combines the antioxidant/brightening properties of ascorbic acid with the humectant properties of hyaluronic acid. The ester bond provides improved stability versus free L-ascorbic acid while still hydrolyzing to release the active forms. Used in multi-functional serums for combined brightening, antioxidant, and hydration benefits.

antioxidantskin-brighteninghumectantskin-conditioning
Dual-function active combining vitamin C (ascorbic acid) antioxidant/brightening activity with hyaluronic acid hydration in a single moleculeMore stable than L-ascorbic acid at physiological pH due to the ester bond that protects the ascorbate moiety from oxidationHydrolyzes gradually on skin to release free ascorbic acid and hyaluronic acid at the site of action
+ Sodium Hyaluronate+ Niacinamide+ Ferulic Acid
Active
Azelaic Acid

A multitasker for redness, acne and pigmentation.

soothing
Calms redness and rosaceaFades pigmentationHelps acne
Temporary tingling on application
+ Niacinamide
Active
Bacillus/Soybean Ferment Extract
BACILLUS/SOYBEAN FERMENT EXTRACT

A fermented soybean extract using Bacillus species bacteria. Fermentation by Bacillus transforms soy compounds, potentially enhancing isoflavone bioavailability and adding probiotic metabolites. Used in Sana's fermented lotion.

antioxidantskin-brighteningskin-conditioning
Enhanced bioavailability of soy isoflavones via bacterial fermentationProbiotic-associated skin benefitsSkin brightening
+ Soymilk Isoflavones+ Niacinamide
Active
Bakuchiol

A plant-derived ingredient with retinol-like benefits and less irritation.

Smooths fine linesGentler than retinoidsPregnancy-friendly alternative
+ Niacinamide
Active
Bee Venom

A bee-derived active marketed for temporary firming, but a significant allergen for sting-sensitive users.

active
May stimulate circulation and a temporary firming effectMarketed for a plumping, smoothing appearance
Potent allergen — avoid if allergic to bee stingsCan trigger irritation or allergic reactions
Active
Bifida Ferment Filtrate

A cell-free filtrate obtained from Bifidobacterium fermentation, distinct from bifida ferment lysate in that it contains only secreted metabolites and exopolysaccharides without cellular debris, used for barrier reinforcement and soothing.

Skin conditioningPostbioticBarrier support
Strengthens skin barrier functionReduces sensitivity and irritationSupports microbiome balance
Active
Broussonetia Kazinoki Root Extract

Broussonetia kazinoki (paper mulberry) root extract is a cornerstone brightening ingredient in Korean beauty. Its distinctive prenylated flavonoids — particularly kazinol F and broussochalcone A — inhibit tyrosinase more potently than kojic acid in several comparative in vitro studies, making it highly effective for addressing melasma, PIH, and uneven skin tone. Widely used in K-beauty brightening serums and essences, often paired with niacinamide for complementary melanin inhibition mechanisms.

tyrosinase-inhibitionskin-brighteningantioxidantanti-inflammatory
Prenylated flavonoids (kazinol F, broussochalcone A) are potent tyrosinase inhibitors that reduce melanin synthesis — comparative in vitro studies show stronger tyrosinase inhibition than kojic acid, making this a high-efficacy brightening active for addressing melasma, PIH, and dullnessAntioxidant activity from the flavonoid-rich extract protects against UV-induced oxidative stress, a key driver of post-inflammatory hyperpigmentationAnti-inflammatory properties reduce the inflammatory cascade that triggers excess melanin production after skin stress, complementing the direct tyrosinase inhibition
Generally well-tolerated; prenylated flavonoids may have very mild phytoestrogenic activity in vitro, not considered clinically meaningful at cosmetic topical concentrations
+ Niacinamide+ Tranexamic Acid+ Centella Asiatica Extract
Active
Calcium Pantothenate

The calcium salt form of vitamin B5 (pantothenic acid), which is more stable than panthenol and supports fibroblast activity, skin regeneration, and moisturization.

skin conditioninghumectantanti-inflammatory
Stimulates fibroblast activitySupports collagen and elastin productionMoisturizing and regenerating
Active
Centella Asiatica Callus Extracellular Vesicles

Plant-cell-culture-derived extracellular vesicles (exosome-like) from Centella asiatica callus, carrying bioactive lipids, proteins, and miRNAs that stimulate skin repair, collagen synthesis, and barrier recovery.

regenerativesoothingbarrier-support
Promotes barrier recovery and collagen synthesisSoothes UV-induced and environmental inflammationNano-sized lipid vesicles enhance skin penetration and active delivery
Emerging biotechnology active; long-term safety and standardization data are still developing
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
Active
Cinnamomum Zeylanicum Bark Extract

A non-volatile extract of Ceylon cinnamon (Cinnamomum zeylanicum / C. verum) bark, containing cinnamaldehyde, eugenol, and polyphenols; used for antioxidant and antimicrobial effects but carries meaningful skin sensitization risk from its fragrance-active constituents.

antioxidantantimicrobialskin-conditioningfragrance
Rich in polyphenols, cinnamaldehyde, and eugenol, providing antioxidant protection against free radicalsAntimicrobial activity against acne-causing bacteria and certain fungal strainsAnti-inflammatory compounds may help calm mild irritation
Cinnamaldehyde is a well-documented skin sensitizer and EU-regulated fragrance allergen — must be declared above threshold concentrations in leave-on productsEugenol content is also a declared EU fragrance allergen
Active
Citrus Aurantifolia (Lime) Fruit Extract
CITRUS AURANTIFOLIA FRUIT EXTRACT

An extract from the fruit of the lime tree (Citrus aurantifolia) containing vitamin C, flavonoids, and citric acid, used for antioxidant and brightening effects; contains furanocoumarins that can increase UV sensitivity.

AntioxidantAstringentBrightening agentSkin-conditioning agent
Provides antioxidant protection via vitamin C and flavonoidsMild brightening effectAstringent properties may help minimize pore appearance
Contains furanocoumarins (bergapten, xanthotoxin) with photosensitizing potential — use caution in leave-on daytime formulasMay cause irritation in sensitive or compromised skin
Active
Cochlearia Armoracia Root Extract
Cochlearia Armoracia (Horseradish) Root Extract

An extract from horseradish root containing peroxidase enzymes and glucosinolates, used in exfoliating toners (notably Biologique Recherche P50) for mild enzymatic exfoliation and brightening.

exfoliantbrighteningantimicrobial
Mild enzymatic exfoliation via peroxidase enzymesHelps brighten and even skin toneAntimicrobial properties
Can cause irritation or sensitization at high concentrations due to isothiocyanatesNot recommended for sensitive or reactive skin at high doses
Active
Copper Peptides
Copper Tripeptide-1

A signaling peptide that supports skin repair and firmness.

peptide
Supports collagenWound healingImproves firmness
× Ascorbic Acid× Glycolic Acid
Active
Cordyceps Militaris Mycelium Extract

An extract from the mycelium of Cordyceps militaris, a red-orange entomopathogenic fungus; distinct from the rare Cordyceps sinensis, it contains cordycepin, adenosine, and beta-glucans with antioxidant, anti-inflammatory, and skin-revitalizing properties.

antioxidantskin-conditioningadaptogen
Cordycepin and adenosine provide anti-inflammatory and revitalizing effectsBeta-glucans support skin immunityDistinct from C. sinensis; cultivable and more sustainable
Active
Cordyceps Sinensis Extract

Extract from the mycelium of Ophiocordyceps sinensis (syn. Cordyceps sinensis), a high-altitude fungus. Key bioactives include cordycepin (3'-deoxyadenosine), adenosine, and beta-glucan polysaccharides. Cordycepin modulates cellular energy pathways via NAD+ biosynthesis and sirtuin activation, while polysaccharides contribute humectant and barrier-supporting properties. EU CosIng registers five cosmetic functions: antioxidant, humectant, and skin conditioning.

antioxidantskin-conditioninghumectantanti-aging
Boosts skin cell energy by increasing NAD+ levels and ATP production, supporting cellular longevity via sirtuin activationStimulates collagen production and reduces wrinkle depth — double-blind RCT evidence showing ~28% wrinkle reduction at 28 daysEffective for uneven skin tone: non-inferior to hydroquinone cream in reducing melasma in a 12-week RCT with significantly fewer adverse reactions
Most cosmetic-grade material is cultivated mycelium, not wild fruiting body; potency varies by sourceTheoretical sensitivity risk for individuals with mold or fungal allergies
+ Niacinamide+ Adenosine+ Sodium Hyaluronate
Active
Cordyceps Sinensis Mycelium Extract

An extract from the mycelium of Cordyceps sinensis (caterpillar fungus / Dong Chong Xia Cao), a rare Himalayan TCM fungus; contains polysaccharides, cordycepic acid, and nucleosides with antioxidant and adaptogenic skin-revitalizing properties.

antioxidantadaptogenskin-conditioning
Cordycepic acid and polysaccharides with adaptogenic propertiesAntioxidant protectionRare luxury TCM ingredient with revitalizing claims
Active
Creatine

A naturally occurring nitrogenous compound that serves as a cellular energy buffer; applied topically it may support ATP regeneration in skin cells, with anti-aging and photoprotective properties suggested by early clinical studies.

anti-agingenergy-support
Supports ATP energy production in skin cellsHelps smooth fine lines and improve firmness with regular useMay protect against UV-induced DNA damage
Topical evidence, while promising, is limited compared to oral research; most consumer studies are industry-sponsored
Active
Cyanocobalamin

The synthetic, stable form of vitamin B12, used in cosmetics for its antioxidant and skin-conditioning properties; studies suggest topical B12 can reduce eczema symptoms and support skin barrier recovery.

Skin conditioningVitaminAntioxidant
Antioxidant protectionSupports cell renewal and energy metabolismSoothes irritated skin
Active
DNA-Na
SODIUM DNA

The sodium salt of deoxyribonucleic acid (DNA), typically sourced from salmon milt (sperm). Highly hydrophilic — attracts and retains moisture. Also promotes skin cell repair mechanisms. Used in Lululun's Hydra PD mask.

skin-conditioninghumectantantioxidant
Excellent moisture retention — highly hydrophilicPromotes skin barrier repairAntioxidant and anti-inflammatory
+ Hyaluronic Acid+ Niacinamide
Active
Dimethyl Sulfone

Methylsulfonylmethane (MSM), a naturally occurring organic sulfur compound used topically to support collagen production, soothe inflammation, and improve skin hydration and texture.

anti-agingsoothinghumectant
Supports collagen and ceramide synthesis for firmer-looking skinSoothes irritation and rednessImproves skin hydration and texture
Most clinical evidence is from oral MSM research; topical-specific evidence is growing but limited
Active
Dipalmitoyl Hydroxyproline

The dipalmitoyl ester of hydroxyproline (the key amino acid in collagen) designed for oil-phase delivery; stimulates collagen synthesis and protects skin structural proteins to firm and smooth aging skin.

collagen-supportanti-agingskin-conditioningantioxidant
Stimulates collagen synthesis and protects existing collagen fibers from enzymatic degradationLipophilic palmitic acid chains enhance skin penetration compared to hydroxyproline aloneReduces appearance of fine lines and wrinkles by improving skin firmness and elasticity