Sambucus Nigra Flower Extract

Sambucus nigra (elderflower) extract is a botanical soothing/antioxidant additive typically used at low concentrations, but like many plant extracts it contains multiple bioactive compounds that can trigger irritant or allergic contact dermatitis in reactive or eczema-prone skin. Clinical patch-test experience with botanicals shows a non-trivial subset of sensitized individuals react despite “gentle” marketing, and cumulative exposure in multi-extract formulas increases risk. Given patient-safety priorities for highly sensitive populations, this warrants a mild irritancy score rather than being treated as universally gentle. Safety Notes: In mass-market leave-on creams/lotions/cleansers, Sambucus Nigra (Elderflower) Extract is commonly used as a minor botanical supporting ingredient at ~0.01–0.5%, reflecting typical supplier-recommended use levels for water/glycerin-based extracts and the fact it is often listed mid-to-late INCI. Higher-strength consumer-available “botanical concentrate” serums, toner/essence style products, and mask-type formulations can reach ~1–5% when the extract is a primary positioning ingredient (especially in hydroglycolic extracts), while concentrations above this are uncommon due to formula stability/sensory constraints and diminishing formulation benefit. No specific FDA/EU maximum is set for this INCI, so the observed range is largely driven by supplier guidance, stability, and product aesthetics rather than regulatory caps.