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.
An extract of Chrysanthemum indicum flowers rich in luteolin and apigenin flavonoids, used in Japanese skincare for soothing, anti-inflammatory, and antioxidant properties. Distinct from Chrysanthemum parthenium (feverfew).
An extract of feverfew (Chrysanthemum parthenium / Tanacetum parthenium) used in skincare for its anti-inflammatory, soothing, and antioxidant properties.
Extract from Chrysanthemum sinense (Chinese chrysanthemum / ju hua); used in Korean hanbang formulas for its cooling, soothing, and antioxidant polyphenols.
Cimicifuga racemosa (black cohosh) root extract is derived from the rhizome of a plant native to eastern North America, used in Native American and Western herbal medicine. In cosmetics, its triterpene glycosides and phenolic acids deliver anti-inflammatory and antioxidant activity for calming sensitive or reactive skin. The hepatotoxicity concerns from oral supplementation do not apply to topical cosmetic formulations.
Cinnamaldehyde — the primary aromatic compound of cinnamon oil. Provides a warm, sweet cinnamon fragrance. Listed as a significant fragrance allergen under EU Cosmetics Regulation.
Essential oil from the bark of Cinnamomum camphora (camphor tree). Contains camphor, linalool, and eucalyptol. Used at trace levels in sunscreen and outdoor formulas for its fresh, cooling scent and minor antimicrobial contribution. A known fragrance allergen requiring caution.
A cosmetic extract derived from the leaves of Cinnamomum camphora (camphor tree), delivering antioxidant and mild soothing benefits via leaf polyphenols; distinct from camphor essential oil or the linalool-rich ho wood oil variant.
An essential oil steam-distilled from the wood of Cinnamomum camphora var. linaloolifera (ho wood), consisting mainly of linalool; used as a natural fragrance in cosmetics.
An extract of the bark of Chinese cinnamon (Cinnamomum cassia, CAS 84961-46-6), containing cinnamaldehyde, eugenol, and polyphenols; used in skincare for antioxidant and antimicrobial properties but requires caution due to sensitization potential from fragrance-active constituents.
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.
Steam-distilled essential oil from the bark of Ceylon cinnamon (Cinnamomum zeylanicum / C. verum), containing approximately 60–80% trans-cinnamaldehyde and 5–10% eugenol. Used solely as a fragrance ingredient. HIGH sensitization risk: cinnamaldehyde is a direct-acting electrophilic sensitizer (Michael acceptor), a Category 1 contact allergen on the EU fragrance allergen list, and one of the most frequently positive reactions in patch-test populations. Both cinnamaldehyde and eugenol must be individually declared on EU cosmetics above threshold concentrations, and the whole oil is now itself listed in EU Regulation 2023/1545 Annex III (effective July 2026 for new products).
A naturally occurring fragrance alcohol with a floral, balsamic character, found in cinnamon and storax essential oils. Listed as a regulated fragrance allergen under EU Cosmetics Regulation.
An extract from the aerial parts of Cistus incanus (pink rock rose), a Mediterranean shrub rich in ellagitannins and flavonoids, used for antioxidant and soothing benefits.
A naturally occurring citrus-scented aldehyde (mixture of geranial and neral) that is a regulated EU fragrance allergen found in citrus and lemongrass oils.
An AHA most often used in small amounts to adjust pH.
Essential oil distilled from Cymbopogon nardus (citronella grass). Primarily used as a fragrance ingredient; contains significant concentrations of citronellal, geraniol, and citronellol — all EU-listed fragrance allergens.
A rose-like fragrance component and known allergen.
A non-essential amino acid naturally occurring in watermelon rind. In the skin, citrulline is part of the natural moisturizing factor (NMF) and participates in the urea cycle. Used in skincare as a humectant and NMF-mimicking conditioning agent.
A watermelon fruit extract providing antioxidants and light hydration.
A lightweight plant oil cold-pressed from watermelon seeds, rich in linoleic acid and tocopherols, used as a dry-feel emollient that nourishes skin without heaviness.
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.
Fresh juice from lime (Citrus aurantifolia). Contains citric acid (AHA) for mild exfoliation and brightening, along with vitamin C and flavonoids. Used in Tunemakers' peeling lotion.
An extract from the peel of Citrus aurantifolia (lime) containing flavonoids, vitamin C, and trace furanocoumarins, used for antioxidant and toning benefits in cosmetics.
An essential oil expressed or steam-distilled from the peel of lime (Citrus aurantifolia) used primarily as a fragrance ingredient; the cold-pressed form contains furanocoumarins that are phototoxic in leave-on applications.